How to Prepare a Sign Bill of Quantities

A signage quotation can look precise and still be based on the wrong scope. The problem usually starts before anyone discusses price. A drawing may show 120 signs, but the BOQ groups several sizes under one code. Another line may say “illuminated logo” without stating the letter depth, LED color temperature, voltage, mounting method, or whether power supplies are included. One manufacturer prices individual stud mounting, another assumes a raceway, and a third excludes installation hardware completely. All three quotations may look professional, yet they are not pricing the same product. For commercial signage, a BOQ is more than a quantity list. It is the document that connects sign codes, locations, dimensions, materials, lighting, mounting, quantities, drawing revisions, and commercial scope. When those fields are clear, quotation differences become easier to explain. When they are missing, the lowest price may simply contain the most assumptions. A strong Sign Bill of Quantities therefore reduces pricing gaps, repeated clarification emails, drawing conflicts, missing accessories, and expensive changes after production has already started.

To prepare a Sign Bill of Quantities, count every sign from the latest approved plans, assign a clear sign code, separate items when size or construction changes, and record the specifications that affect quotation. Include dimensions, materials, finish, lighting, electrical requirements, mounting, quantity, drawing reference, revision, and relevant packing or delivery requirements. Every quantity should be traceable back to a project drawing.

A 40-store rollout shows why the process matters. The project team once believes it needs 40 identical exterior logo sets. After the location plans are checked properly, six stores require smaller signs, eight need raceway mounting, and several use a different wall condition. The number of stores has not changed, but the manufacturing scope has. Catch those differences in the BOQ and they become manageable quotation lines. Miss them, and they reappear later as revised prices, new shop drawings, repacking, or site delays. The sections below show how to build the BOQ so those problems are found before the RFQ is sent.

What Is a Sign BOQ?

A Sign Bill of Quantities, or Sign BOQ, is the working list used to turn a signage drawing package into countable and quotable items. It records what signs are required, how many are needed, where they belong, and which specifications affect cost or fabrication. A useful BOQ lets an estimator trace every quantity back to drawings instead of pricing from a rough sign count.

What Does a Sign BOQ Do?

A Sign BOQ answers a practical question: what exactly are we asking a sign manufacturer to price?

A drawing may show dozens or hundreds of signs across elevations, floor plans and wayfinding layouts. Looking at the drawings alone, a project team may know where the signs go but still struggle to answer basic procurement questions:

• How many of each sign type are required?
• Are all signs under the same code actually the same size?
• Which units are illuminated?
• Which signs need different mounting?
• Are power supplies included?
• Are mounting templates or hardware included?
• Are signs packed by building, floor or store?
• Which drawing revision was used for the quantity takeoff?

The BOQ turns those questions into rows that can be checked.

Consider a retail project with 20 stores. Each store needs one exterior logo, two directional signs and four interior identification signs.

A quick estimate gives:

20 exterior logos
40 directional signs
80 identification signs
140 signs total

That total is useful, but it is not yet enough for a reliable quotation.

Suppose six stores use a 2,400 mm exterior logo while fourteen use a 3,600 mm logo. Suppose eight stores have concrete façades and twelve use metal cladding. The quantity remains 20, but the fabrication and mounting requirements no longer match.

A better BOQ separates the variables that change the product.

Sign Code	Sign Type	Size	Mounting	Qty
CL-01A	Front-Lit Channel Letters	2400 × 650 mm	Stud Mount	6 sets
CL-01B	Front-Lit Channel Letters	3600 × 980 mm	Stud Mount	8 sets
CL-01C	Front-Lit Channel Letters	3600 × 980 mm	Raceway	6 sets
WF-02	Directional Sign	600 × 250 mm	Wall Mount	40 pcs
ID-03	Interior ID Sign	300 × 120 mm	Adhesive + Stud	80 pcs

The project still contains 140 signs, but the manufacturer now sees five pricing groups instead of three vague product names.

That difference matters because size, material, lighting, power and mounting can change:

fabrication hours;

metal and acrylic consumption;

LED quantity;

power-supply configuration;

product weight;

mounting hardware;

packing size;

freight volume;

installation preparation.

At manufacturing stage, Iduoduo uses approved project information to develop shop drawings, sections, BOM control, finish schedules, electrical planning, mounting preparation and final production approval. The purpose is to convert project drawings into production-ready information rather than manufacture from appearance alone.

A BOQ is therefore not just a counting sheet. It is the first commercial control point between design and production.

How Is It Different from a Sign Schedule?

A Sign BOQ and a Sign Schedule often contain similar information, but they are usually used for slightly different jobs.

A Sign Schedule is mainly concerned with the sign system.

A Sign BOQ is mainly concerned with the measurable project scope.

In a hotel project, for example, the Sign Schedule may define:

RM-01 — Guest Room Identification
DR-02 — Directional Sign
EL-01 — Elevator Lobby Sign
WC-01 — Restroom Identification

The schedule may also show sign sizes, graphic rules, tactile requirements, mounting heights, materials or finishes.

The BOQ takes those sign types and asks:

How many RM-01 signs exist?

How many DR-02 signs are required on Level 1?

Are all EL-01 signs the same size?

Does WC-01 have one version or several?

Which units belong to Building A and which belong to Building B?

For wayfinding and architectural signage, the two documents may be closely linked. Iduoduo’s documented production method for ADA, wayfinding, room identification, plaques and architectural signs uses approved sign schedules, project drawings, mounting information, unique sign codes, item-by-item content inspection and floor- or area-based packing.

A useful way to separate the documents is:

Document	Main Question
Sign Location Plan	Where does each sign go?
Sign Schedule	What type of sign is it?
Message Schedule	What wording or graphic appears on it?
Sign BOQ	How many must be priced and supplied?
Shop Drawing	How will the sign actually be manufactured?
BOM	What materials and components are required for production?

Problems start when one document is expected to do every job.

A BOQ should not replace a detailed shop drawing. A shop drawing should not be used as the only quantity record for a 300-sign project. A message schedule should not become the main purchasing sheet.

Keeping those roles clear makes revisions easier to control.

Why Does It Matter for an RFQ?

A weak BOQ can make three quotations look comparable when they are not.

Imagine an RFQ contains one line:

“Exterior Illuminated Logo — 3 sets”

Supplier A prices aluminum front-lit channel letters.

Supplier B prices stainless steel letters.

Supplier C prices aluminum letters on a raceway.

One quotation includes power supplies and mounting templates. Another includes power supplies but no mounting hardware. The third excludes both.

The purchasing team receives three totals, but comparing the totals alone would be misleading.

A better BOQ could state:

Sign Code: CL-01
Product: Front-Lit Channel Letters
Overall Size: 3200 × 850 mm
Return Depth: 100 mm
Return Material: Aluminum
Face: Acrylic
Finish: Matte Black
LED: White, 6500K
Input: 110V project
Mounting: Individual stud mount
Power Supply: Included
Template: Included
Quantity: 3 sets
Drawing Reference: SD-101 Rev.04

Now each sign manufacturer is much closer to pricing the same scope.

That is the real value of a BOQ during an RFQ.

Price differences can then be investigated properly.

Perhaps one factory uses a different aluminum thickness. Perhaps another proposes a different LED configuration. Perhaps one quotation includes reinforced export packing while another assumes local collection.

Those differences are useful because they are visible.

Hidden assumptions are far more dangerous.

For larger projects, the BOQ can also support option pricing. For example:

Base option: stainless steel returns

Alternative A: aluminum returns

Alternative B: raceway mounting

Alternative C: individual mounting

Keeping alternatives separate prevents value-engineering proposals from becoming mixed into the base quotation.

The project team can then compare cost, weight, installation time and appearance without losing the original scope.

Who Uses a Sign BOQ?

A Sign BOQ normally travels through several departments before one sign reaches the wall.

The architect or wayfinding designer may create the first sign schedule.

The estimator performs quantity takeoff.

The procurement team issues the RFQ.

The sign company reviews scope and pricing.

The manufacturer checks whether the proposed sign can actually be produced.

The installer later needs products, codes, templates and hardware to match the site.

For a small storefront with one logo, much of the information can fit on one drawing.

For a larger program, the BOQ becomes far more important.

Consider a project containing:

12 exterior logo sets;

36 projecting signs;

184 room signs;

62 directional signs;

24 restroom signs;

18 regulatory signs;

6 reception logos.

The project has 342 sign units before counting individual letters, mounting accessories or power components.

If only 2% of the units are omitted or assigned incorrectly, about seven signs are affected.

Seven missing signs may sound minor on a spreadsheet. On site, they can mean seven incomplete locations, another production run, extra international freight and an installation crew returning after the original visit.

The same issue appears in multi-store programs.

A rollout of 80 stores with five sign packages per location creates 400 store-level sign packages. A labeling or packing error affecting only 1% of packages means four stores may receive incorrect or incomplete material.

That is why sign codes, quantities and location references are operational data, not administrative paperwork.

The BOQ also helps a manufacturer decide what information needs engineering review before a price can become production-ready.

Typical checks include:

size and proportions;

material and thickness;

surface finish;

lighting method;

LED color or color temperature;

input voltage;

power supply;

wire exits;

mounting holes;

raceway or backboard;

indoor or outdoor use;

packing requirements;

destination country.

Iduoduo’s engineering records cover structure, materials, LED, power, mounting, waterproofing, segmentation and production feasibility. The stated goal of the engineering process is to reduce errors involving size, material, lighting, power, mounting holes, wire exits, waterproofing, packaging and later repeat production.

For that reason, a strong Sign BOQ should be judged by one simple test:

Can a person who did not prepare the spreadsheet understand what is being counted, locate it in the drawing set and know which specifications affect the quotation?

If the answer is yes, the BOQ is doing its job.

If the answer requires opening old emails, searching WhatsApp messages or asking which version of a drawing is current, the BOQ still has work to do.

What Should a Sign BOQ Include?

A Sign BOQ should identify every sign clearly enough for quantity checking and supplier pricing. At minimum, include the sign code, location, product type, overall size, quantity, material, finish, illumination where applicable, mounting method, drawing reference and revision. Add voltage, power supply, wire exit, raceway or backboard, outdoor requirements, packaging, destination and project date whenever those items affect manufacturing or quotation accuracy.

What Project Information Should Come First?

Before listing individual signs, place the project-level information at the top of the BOQ. These details apply to the whole quotation and prevent suppliers from pricing against different assumptions.

A practical header can include:

Project Field	Example
Project Name	Riverside Retail Rollout
Project Number	RS-2026-018
BOQ Revision	Rev.03
Drawing Revision	Rev.07
Issue Date	8 September 2026
Units	mm
Number of Stores	26
Destination	United States
RFQ Status	For Quotation
Required Delivery	15 November 2026

Revision information is particularly important.

Assume Rev.04 contains 185 signs. Rev.05 removes three old signs and adds eight new signs. The correct project quantity becomes 190.

If the BOQ remains on Rev.04 while the drawing package moves to Rev.05, different suppliers may quote different quantities even though everyone appears to be working on the same project.

Store or building references should also be added for multi-location work. Instead of writing only “Main Entrance,” use a clearer reference such as:

Store: CA-012
Area: Main Elevation
Drawing: SLP-101
Sign Code: CL-01

A person reviewing the quotation can now trace the sign without searching through several PDFs.

At manufacturing stage, version control becomes even more important. Iduoduo’s documented QC process checks drawing version, modification date, product code, approval status, quantity, material, color, mounting, packaging and destination before final inspection. Old drawings are withdrawn or clearly marked obsolete to reduce mixed-version production.

Which Fields Should Each Sign Item Include?

Each BOQ row should contain the information that can materially change price, construction, installation preparation or packing.

For most commercial sign projects, the following structure works well:

Field	Example	Pricing Impact
Sign Code	CL-03B	Links drawings and quotation
Location	Main Façade	Identifies installation area
Product Type	Front-Lit Channel Letters	Defines construction family
Overall Size	4200 × 920 mm	Changes materials and labor
Depth	120 mm	Changes returns and LED space
Face Material	Acrylic	Affects lighting and fabrication
Return Material	Aluminum	Affects weight and cost
Finish	Matte Black	Defines surface process
Illumination	Front-Lit	Changes internal construction
LED / CCT	White 6500K	Controls light appearance
Voltage	110V	Affects electrical configuration
Mounting	Raceway Mount	Changes fabrication
Environment	Outdoor	Adds weather considerations
Quantity	3 sets	Controls production quantity
Drawing Ref.	SD-203 Rev.05	Controls technical basis

Not every product needs every column.

Non-illuminated metal letters do not need LED color, voltage or power-supply fields. A room plaque normally does not need return depth. A blade sign may need extra fields for single-sided or double-sided construction, bracket type and wall condition.

For Channel Letters, Iduoduo’s quotation information can include logo or font files, overall size, letter height, quantity, lighting method, face color, return color, letter depth, indoor or outdoor use, LED color or CCT, voltage, power requirements, mounting method, raceway or backboard, wire exit, wall condition, waterproofing requirement, destination, packing and project date.

A BOQ does not need to become a fabrication drawing, but it should expose every variable likely to change the quotation.

How Should Units and Quantities Be Recorded?

Never enter quantity without defining what the unit means.

A line reading:

Channel Letters — Qty 48

is incomplete.

Forty-eight could mean 48 letters, 48 complete logo sets or 48 storefront locations.

Use units that match how the sign will be ordered and delivered.

Sign Product	Better Unit
Individual acrylic plaque	pc
Complete channel letter logo	set
Blade sign	pc
Room identification sign	pc
Matched two-part sign	pair
Complete store sign package	store set

Consider a chain with 40 locations. Each storefront logo contains eight individual letters.

Physical letter count:

40 × 8 = 320 letters

Commercial order count:

40 complete sets

For most RFQs, “40 sets” is clearer because each storefront requires one complete logo system. The drawing can show the eight individual letters inside each set.

Quantities should also be separated when products are:

new;

replacement;

relocated;

spare;

optional;

existing and not supplied.

For example:

Main Logo — 24 new sets
Main Logo — 2 spare sets
Main Logo — 6 existing, retain

Simply writing “32 sets” would overstate the manufacturing requirement by 25%.

Multi-location projects should also be checked two ways. If 30 stores each require one exterior logo, two directional signs and four interior signs, the expected total is:

30 exterior logo sets
60 directional signs
120 interior signs
210 supplied sign units

If the BOQ totals 206, four units need investigation before the RFQ is issued.

How Should Materials, Lighting and Mounting Be Specified?

Material wording should be specific enough to prevent a supplier from choosing an entirely different construction.

Avoid vague terms such as:

Metal letters
White acrylic
Silver finish
LED lighting
Wall mounted

Replace them with usable project information.

For example:

Return Material: Aluminum
Face: White acrylic
Return Finish: Matte black paint
Lighting: Front-lit white LED, 6500K
Mounting: Individual stud mount
Power Supply: Included

A seemingly small change can affect cost significantly.

“Metal return” could mean aluminum or stainless steel.

“White LED” could mean warm white, neutral white or cool white.

“Wall mount” could mean studs, a raceway, a backboard, adhesive fixing or brackets.

For illuminated signs, consider recording:

lighting direction;

LED color or color temperature;

voltage;

power-supply requirement;

control requirement;

wire exit;

indoor or outdoor environment.

For mounting, record:

stud mount;

raceway;

backboard;

stand-off mount;

bracket mount;

suspended installation;

adhesive plus mechanical fixing.

Wall or substrate information should be added when known because concrete, glass, metal cladding and timber walls may require different product preparation.

Iduoduo’s material and engineering records can include BOMs, material schedules, color schedules, finish schedules, electrical specifications, mounting specifications, approved samples, QC checklists and packaging specifications.

Material decisions are also evaluated against product size, illumination, indoor or outdoor exposure, wall condition, mounting method, target market, transportation and repeat-order requirements rather than appearance alone.

How Should Sign Codes and Drawing References Be Managed?

Every repeatable sign type should have a stable sign code, and every BOQ row should point back to the drawing used to create the quantity.

A simple coding structure might be:

CL-01 — Front-Lit Channel Letters
CL-02 — Halo-Lit Channel Letters
LB-01 — Wall Light Box
BS-01 — Blade Sign
WF-01 — Directional Sign
ID-01 — Room Identification Sign

For large projects, add an individual unit reference.

For example:

Sign Type: ID-03
Room Sign: ID-03-417
Store Sign: TX-018-CL-02

The first code identifies the construction standard. The second identifies the physical location.

Consider a hotel with:

186 room signs;

42 directional signs;

18 restroom signs;

12 elevator signs;

8 reception and facility signs.

The project already contains 266 sign units.

Without individual coding, an instruction such as “change the Room ID sign” is difficult to control. With ID-03-417, the exact unit can be located in the message schedule, drawing, production file, QC record and packing list.

Sign codes should remain consistent across:

BOQ;

sign location plan;

sign schedule;

artwork;

quotation;

shop drawings;

production files;

QC records;

packing labels.

For ADA, wayfinding, room identification and architectural signage, Iduoduo’s documented workflow uses approved sign schedules, project drawings, material and finish standards, mounting details, unique sign codes, item-by-item content inspection and floor- or area-based packing.

A practical final check is to select any BOQ row and ask five questions:

Can the sign be found on the drawing?

Is its quantity clear?

Are the major materials defined?

Is the mounting method known?

Is the drawing revision visible?

If all five answers are available from the issued project files, the BOQ is usually ready for a meaningful manufacturing quotation.

How Do You Count and Classify Signs?

Count every sign from the latest issued location plans, elevations and schedules before grouping anything into BOQ quantities. Give each sign a traceable code, then combine only units with the same size, construction, material, lighting and mounting requirements. When any specification changes the fabrication method, cost, packing or installation preparation, create a separate BOQ line instead of hiding the variation inside one total quantity.

How Do You Read Sign Location Plans?

Start with the drawing register, not the spreadsheet.

Before counting the first sign, confirm which plans are current. A signage package may contain floor plans, elevations, reflected ceiling plans, sign schedules and enlarged details issued under different revision numbers. Using an old Level 2 plan while the rest of the takeoff uses the latest drawings can create a quantity error that looks perfectly normal in Excel.

A practical counting sequence is:

1. Confirm the latest drawing revision.
2. Review the sign legend and sign codes.
3. Count one floor, elevation or area at a time.
4. Mark every sign after counting it.
5. Record the code and location in a working takeoff.
6. Subtotal the area before moving to the next drawing.
7. Compare the subtotal with any available sign schedule.

Consider a three-level commercial building.

Area	ID Signs	Directional	Regulatory	Logo Signs	Total
Ground Floor	28	14	8	3	53
Level 1	34	11	6	1	52
Level 2	31	9	7	1	48
Total	93	34	21	5	153

Keeping the floor totals separate makes errors easier to find. If the BOQ later shows 151 signs, the project team knows two units disappeared somewhere between takeoff and classification.

Do not count only the visible symbol. Read the adjacent notes.

A sign marked WF-03 may have a note stating “existing sign to remain.” Another may say “relocate existing sign.” A third may be a new sign. Counting all three as new fabrication would overstate the manufacturing quantity.

Use clear status categories such as:

New
Replacement
Relocated
Existing — Retain
Existing — Remove
Optional
Spare

Only the categories included in the manufacturing scope should enter the purchased quantity.

The same discipline matters later during manufacturing. Iduoduo’s project process uses drawings, mounting information, BOM control, finish schedules and revision management to move approved information into production rather than relying on isolated visual references.

Which Signs Need Separate Line Items?

Two signs should share one BOQ line only when the differences between them do not materially change manufacturing or pricing.

Matching artwork alone does not make two signs identical.

For example, ten storefronts may all display the same logo, but the actual products could include:

four 2400 mm wide signs;

three 3200 mm wide signs;

three 4200 mm wide signs.

Combining them as:

Exterior Logo — 10 sets

makes pricing unnecessarily uncertain.

A better breakdown is:

Sign Code	Size	Mounting	Qty
CL-01A	2400 × 620 mm	Individual Mount	4 sets
CL-01B	3200 × 820 mm	Individual Mount	3 sets
CL-01C	4200 × 1080 mm	Individual Mount	3 sets

Separate a sign into a new BOQ line when any of the following changes enough to affect production:

size;

material;

material thickness;

surface finish;

lighting direction;

LED color or CCT;

letter or cabinet depth;

voltage;

mounting method;

raceway or backboard;

indoor or outdoor use;

waterproofing construction;

packing requirement.

Mounting is especially easy to overlook.

Suppose 18 identical channel-letter logos are required:

12 are individually mounted;

6 are raceway mounted.

The front appearance may be identical, but the factory work is not. Raceway fabrication adds metalwork, electrical routing, mounting preparation and packaging differences.

The BOQ should therefore show:

CL-02A — Individual Mount — 12 sets
CL-02B — Raceway Mount — 6 sets

The same rule applies to non-illuminated signage.

A brushed stainless steel letter and a painted aluminum letter may share the same logo outline and dimensions, yet the material, weight, finishing process and cost differ enough to require separate items.

The goal is not to create hundreds of unnecessary rows. Split an item when the variation changes what must be manufactured, purchased, tested, packed or prepared for installation.

Iduoduo’s engineering process specifically separates structure, materials, LED systems, power, installation, waterproofing and segmentation during production review because each factor can change manufacturing requirements.

How Do You Handle Size and Specification Variations?

Do not average different sizes into one BOQ quantity.

A common problem appears when one sign type is used throughout a project but scaled to fit different walls.

Imagine a wayfinding system containing 60 directional signs under code WF-04.

The first count may show:

WF-04 — Qty 60

A closer review finds:

32 signs at 600 × 200 mm;

18 signs at 900 × 300 mm;

10 signs at 1200 × 400 mm.

The quantity is still 60, but material usage is very different.

Approximate face areas are:

600 × 200 mm = 0.12 m²
900 × 300 mm = 0.27 m²
1200 × 400 mm = 0.48 m²

For the full quantity:

32 × 0.12 = 3.84 m²
18 × 0.27 = 4.86 m²
10 × 0.48 = 4.80 m²

Total face area = 13.50 m²

If all 60 signs were incorrectly treated as the smallest size, the apparent area would be only:

60 × 0.12 = 7.20 m²

The difference is 6.30 m², or about 47% of the actual face area.

Area is not the only cost driver, but the example shows why grouping different dimensions under one quantity can distort a quotation.

Use suffixes where the product family remains the same:

WF-04A — 600 × 200 mm
WF-04B — 900 × 300 mm
WF-04C — 1200 × 400 mm

Specification changes need similar treatment.

Suppose 24 halo-lit logo sets use the same dimensions:

16 require 4000K white LEDs;

8 require 3000K white LEDs.

Do not hide the difference in notes at the bottom of the spreadsheet. Split the quantities so the LED requirement can be checked during purchasing, assembly and QC.

For multi-country programs, voltage can create another split. A sign originally prepared for a 110V market should not automatically be grouped with an identical sign intended for a 220–240V market.

Iduoduo’s documented project records treat dimensions, materials, illumination, electrical requirements, mounting, packaging and destination-market requirements as controlled manufacturing inputs. Approved information can later be transferred into drawings, BOMs, mounting specifications, QC checklists and frozen production versions.

How Do You Count Multi-Store and Wayfinding Projects?

Use two quantity levels for large programs: sign-type totals and location totals.

A sign-type total answers how many units of each product need to be manufactured.

A location total answers whether every store, floor or building has a complete package.

Both are necessary.

Consider a 50-store rollout with the following standard package:

1 exterior channel-letter set
1 blade sign
2 window signs
1 interior logo

Expected quantities are:

50 channel-letter sets
50 blade signs
100 window signs
50 interior logos

Total = 250 sign units

Now imagine the BOQ totals also equal 250, but one store has six units and another store has only four.

The grand total is correct, yet the allocation is wrong.

A store matrix exposes the problem.

Store	Channel Letters	Blade Sign	Window Signs	Interior Logo	Expected Total
Store 001	1	1	2	1	5
Store 002	1	1	2	1	5
Store 003	1	1	2	1	5

Any row showing four or six units should be investigated.

Wayfinding projects require another layer because identical physical signs may carry different messages.

A hotel might contain 220 room signs using one physical construction. The BOQ can classify them as one manufacturing type:

ID-01 — Room Identification Sign — 220 pcs

The individual signs still need unique references:

ID-01-201
ID-01-202
ID-01-203
ID-01-204

The sign schedule or message schedule then controls room numbers, arrows, pictograms or wording.

Do not create 220 separate product types simply because the room numbers differ if the material, size and mounting remain identical.

Conversely, do not group signs merely because they share the same wording when construction differs.

For ADA, wayfinding, room identification and architectural signage, Iduoduo’s documented workflow uses approved sign schedules, unique sign codes, item-by-item content inspection and floor- or area-based packing.

The same coding later helps packing teams keep Store 018 components away from Store 019 components and Level 4 room signs away from Level 5 signs.

How Do You Verify the Final Quantity?

Never approve a large Sign BOQ using only one total.

Use at least three independent checks:

plan-to-BOQ;

BOQ-to-plan;

location subtotal-to-project total.

A fourth check against the sign schedule or message schedule is useful for wayfinding projects.

A practical reconciliation sheet can look like:

Check	Source A	Source B	Result
Ground Floor Signs	53	53	Match
Level 1 Signs	52	51	Check 1
Level 2 Signs	48	48	Match
Room Signs	93	93	Match
Directional Signs	34	35	Check 1

Do not simply adjust one number until totals agree. Find the physical sign causing the difference.

Common causes include:

a sign counted twice at an enlarged plan and floor plan;

an existing sign counted as new;

a deleted sign remaining in the BOQ;

a revised storefront not added;

one size variation grouped under the wrong code;

a store omitted from the rollout matrix;

a spare quantity accidentally treated as installed quantity;

a message schedule containing a room that no longer exists;

an old drawing revision remaining in circulation.

A useful tolerance for the final quantity check is zero unexplained units.

For a 500-sign project, “only two signs are unclear” still means two products could be missing, incorrectly manufactured or shipped later at additional cost.

Percentage accuracy can hide operational problems. A BOQ with 498 correct lines out of 500 appears 99.6% accurate, yet the two errors may be two exterior signs needed to open a store.

Freeze the takeoff only after all differences are explained and the drawing revision is confirmed.

Later manufacturing controls follow a similar principle. Iduoduo’s documented risk-prevention process includes approved materials, BOM creation, first-article checks, version freezing, packaging verification and QC standards so unresolved project information does not quietly enter bulk production.

A strong quantity check therefore does more than prove the arithmetic. It proves that every purchased sign has a location, every location has the required sign, and every grouped quantity represents products that can genuinely be quoted and manufactured under the same specification.

How Do You Specify Each Sign Item?

Specify each sign item with enough information for a manufacturer to price the intended product without guessing. Record overall size, depth where relevant, materials, finish, lighting, electrical requirements, mounting method, environment, accessories and drawing reference. If one of those details changes fabrication, power, installation preparation or packing, record it separately rather than hiding the difference in notes.

What Dimensions Should Be Listed?

Overall width and height should appear on almost every fabricated sign item. Add depth for channel letters, cabinets, light boxes, raceways, backboards and other three-dimensional structures.

For channel letters, one “size” field is often not enough. A useful item may include:

Dimension	Example
Overall Logo Width	3200 mm
Overall Logo Height	850 mm
Typical Letter Height	620 mm
Return Depth	100 mm
Stand-Off	25 mm
Raceway Size	2800 × 120 × 80 mm

Those numbers affect different parts of production.

Overall size affects material use and packing. Letter height affects the individual letter construction. Return depth affects metal fabrication, LED spacing and internal room. Stand-off distance matters for halo-lit signs because it changes the wall-lighting effect.

A 2400 mm logo and a 4200 mm logo should not be treated as the same item simply because the artwork is identical.

For example:

2400 × 650 mm = 1.56 m² overall envelope

4200 × 1100 mm = 4.62 m² overall envelope

The larger sign occupies almost three times the overall rectangular area. Actual material use will depend on the letter shapes, but the difference already signals a major change in fabrication, packaging and handling.

For irregular logos, also provide AI, SVG, PDF or CAD artwork. Width × height alone cannot show stroke width, letter spacing or internal openings.

Iduoduo’s project review works from logo files, measurements and drawings and converts approved information into shop drawings, sections and production-ready files rather than relying on an overall dimension alone.

Which Materials and Finishes Should Be Defined?

Do not write only “metal,” “acrylic” or “black finish.”

Those terms leave too much room for different interpretations.

A better sign item separates the main construction parts.

For example:

Component	Specification
Face	3 mm white acrylic
Returns	Aluminum
Back	Aluminum
Return Finish	Matte black paint
Face Color	White
Trim	Trimless
Mounting Hardware	Stainless steel studs

For non-illuminated letters, a row might instead state:

Material: 304 stainless steel
Thickness: 1.5 mm fabricated return
Finish: Brushed #4
Face: Brushed stainless steel
Mounting: Stud mount

Material choice affects more than purchase price.

Aluminum and stainless steel can differ in weight, corrosion resistance, forming work and finishing method. Acrylic thickness can affect rigidity and light diffusion. Painted, brushed, mirror and plated surfaces require different processing and protection during packing.

Color should also be controlled with a usable reference when consistency matters.

Suitable references may include:

Pantone;

RAL;

approved physical sample;

CMYK or RGB for printed graphics;

manufacturer-approved color chip.

Avoid phrases such as “same black as logo” unless the logo specification provides a real color standard.

Iduoduo’s material engineering documentation may include BOMs, Material Schedules, Color Schedules, Finish Schedules, sample approvals and approved replacement records. Material selection also considers sign size, environment, mounting, target market, packing and transportation rather than appearance alone.

How Should Lighting and Electrical Requirements Be Recorded?

Illuminated signs should state the lighting direction first.

Examples include:

Front-Lit

Halo-Lit

Front and Halo-Lit

Side-Lit

Internally Illuminated Light Box

Edge-Lit Acrylic

Then specify the light color.

“White LED” is usually too broad for projects where different signs must match.

A clearer BOQ entry is:

LED: White
CCT: 4000K
Input: 110V
Power Supply: Included
Control: On/Off
Wire Exit: Rear center
Environment: Outdoor

Color temperature can make a visible difference across one storefront. A 3000K sign appears warm, while 6500K appears much cooler. If one item is quoted at 3000K and another supplier assumes 6500K, both may technically satisfy “white LED” while producing very different results.

Power information needs the same clarity.

A complete illuminated sign system may involve:

building AC input;

power supply;

low-voltage wiring;

LED modules or LED strips;

controller or dimmer;

connectors;

wire exits;

plug where applicable.

For large signs, one power supply may not be enough. Electrical grouping can depend on total LED load, sign size and installation arrangement.

Destination country should therefore appear in the project information because input voltage and electrical requirements can differ.

Iduoduo’s electrical engineering records cover LED layout, power matching, wiring, controllers, dimming, connectors, voltage, plugs and installation interfaces. Illuminated signs receive 100% lighting inspection and 72-hour pre-shipment testing.

How Should Mounting and Site Conditions Be Specified?

Mounting method should be treated as part of the product, not something decided after manufacturing.

A channel letter prepared for individual stud mounting is different from the same logo mounted on a raceway.

Useful BOQ mounting terms include:

Individual Stud Mount

Raceway Mount

Backboard Mount

Stand-Off Mount

Bracket Mount

Suspended Mount

Adhesive + Mechanical Fixing

Through-Bolt Mount

Also record the wall or substrate when known.

Site Surface	Why It Matters
Concrete	Anchor and drilling requirements
Masonry	Fastener selection
Metal Cladding	Attachment points and load distribution
Glass	Limited penetration options
Timber	Different fixing method
Drywall	Backing may be required

For illuminated signs, wire exit position should be confirmed with the mounting arrangement.

A rear-center wire exit may work for one wall but conflict with a structural member or electrical point on another.

For halo-lit signs, stand-off distance should also be shown. Changing from 20 mm to 50 mm can alter the halo spread and installation hardware.

Raceways and backboards need their own dimensions, finishes and mounting details.

Iduoduo’s documented installation interface can include shop drawings, mounting layouts, full-size templates, studs, mounting holes, raceways, backboards, brackets, wire exits, power supplies, controllers and accessory kits. Local installers remain responsible for site measurement, wall conditions, structural anchoring, final electrical work, permits and local approval.

A BOQ should make that boundary visible before pricing.

What Packaging and Accessories Should Be Included?

Packaging should be specified when the project requires more than ordinary shipment protection.

A single storefront logo may only need protective packing. A 40-store rollout may need each store separated, labeled and packed with its own hardware.

A useful BOQ or packing note can state:

Store-Specific Packing: Yes
Sign Code Label: Required
Accessory Bag: One per sign set
Power Supplies: Packed separately
Mounting Template: Included
Spare Hardware: 5%
Carton Mark: Store Code + Sign Code

Consider a 30-store project with five sign types per store.

30 stores × 5 sign types = 150 sign packages

If all mounting hardware is placed into one general carton, the local installation team must sort hundreds of screws, studs, brackets and power components before work can begin.

If each package is labeled:

Store 018
CL-01
Main Elevation

the installer can identify the correct product immediately.

Accessories should also be listed clearly in the quoted scope.

Depending on the sign, they may include:

power supplies;

controllers;

dimmers;

mounting studs;

screws;

brackets;

raceway covers;

backboards;

templates;

connectors;

spare parts.

Do not assume “complete sign” means the same thing to every supplier.

Packing also needs to match the product. Acrylic faces need scratch and impact protection. Painted metal surfaces need separation from hard components. Large fabricated signs may need stronger external protection or segmented packing.

Iduoduo’s production system transfers approved sign information into BOMs, mounting specifications, QC checklists, packaging requirements and frozen production versions so materials, accessories and packing remain tied to the approved project configuration.

A strong sign item therefore answers more than “what sign is it?” It should tell the estimator what has to be fabricated, powered, mounted and delivered—and tell the project team which information still needs final confirmation.

How Do You Check a Sign BOQ Before RFQ?

Before sending a Sign BOQ for RFQ, confirm that every line matches the latest issued drawings, every quantity can be traced to a real location, and every major pricing variable is either specified or clearly marked for confirmation. Check revisions, units, dimensions, materials, lighting, mounting, accessories, packing and exclusions. The goal is simple: every invited sign manufacturer should price the same scope instead of filling missing information with different assumptions.

How Do You Reconcile the BOQ With the Drawings?

Start by checking whether every BOQ line can be traced back to a current drawing.

Do not review only the total quantity. Check each sign code against the corresponding location plan, elevation, sign schedule and detail drawing.

A practical review sequence is:

1. Open the latest drawing register.
2. Confirm the current revision for every relevant sheet.
3. Match each BOQ sign code to a drawing.
4. Check the number of locations shown on the plans.
5. Confirm whether each sign is new, replacement, relocated or existing.
6. Verify size and mounting notes against the detail drawing.
7. Record any mismatch before issuing the RFQ.

A reconciliation table makes the review faster:

Sign Code	Drawing Qty	BOQ Qty	Difference	Action
CL-01	12	12	0	OK
CL-02	8	7	-1	Check Store 018
WF-03	34	34	0	OK
ID-05	126	128	+2	Check duplicates
LB-02	6	6	0	OK

Do not fix a mismatch by simply changing the BOQ total until both sides agree.

Find the actual sign causing the difference.

A missing sign may come from:

an elevation added in the latest revision;

a store not included in the takeoff;

a sign copied twice from an enlarged plan;

an existing sign mistakenly counted as new;

a deleted sign still remaining in the BOQ;

a replacement sign being counted in addition to the original.

For larger projects, check quantities by floor, building or store before checking the grand total.

Suppose a shopping center contains:

Level 1: 68 signs
Level 2: 74 signs
Level 3: 63 signs
Parking: 41 signs

Expected total = 246 signs

If the BOQ also totals 246, the number appears correct. But a floor-level check could still show Level 2 at 72 and Parking at 43. The grand total matches while the allocation is wrong.

That type of error can later become a packing or installation problem.

Which Revisions Must Be Controlled?

Control every document capable of changing what gets quoted or manufactured.

At minimum, review:

BOQ revision;

sign location plan revision;

sign schedule revision;

sign detail drawing revision;

artwork revision;

finish schedule revision;

electrical information;

mounting details;

packing requirements.

Do not assume the newest file date means the newest approved version.

A drawing saved yesterday may still be an internal draft. A drawing issued three days earlier may be the approved RFQ version.

Use a simple revision register:

Document	Current RFQ Revision	Status
Sign BOQ	Rev.04	Approved for RFQ
Location Plans	Rev.07	Approved for RFQ
Sign Details	Rev.05	Approved for RFQ
Artwork	Rev.03	Approved
Finish Schedule	Rev.02	Approved
Packing Requirement	Rev.01	Current

Old files should be removed from the RFQ folder or clearly marked obsolete.

Version mixing is one of the easiest ways to create a costly mistake.

Imagine a channel letter logo under Rev.03:

Width: 2800 mm
Depth: 80 mm
Mounting: Individual studs

Rev.04 changes it to:

Width: 3400 mm
Depth: 120 mm
Mounting: Raceway

If the BOQ uses Rev.04 but the sign detail still comes from Rev.03, the supplier may quote a completely different construction.

The quantity could still be correct.

The price could still look reasonable.

The product would still be wrong.

At production stage, Iduoduo’s documented quality process checks drawing version, modification date, product code, approval status, quantity, color, material, mounting, packing and destination. Old drawings are withdrawn or clearly marked obsolete to reduce mixed-version production.

The same discipline should be applied before RFQ.

How Do You Verify Quantities and Commercial Scope?

After drawing reconciliation, check whether the BOQ quantity represents what should actually be purchased.

Do not mix installed quantity, spare quantity and existing quantity into one number.

For example:

Installed: 48 sets
Spare: 2 sets
Existing to remain: 6 sets

Manufacturing quantity = 50 sets

A BOQ showing “56 sets” would overstate production by 12%.

Use separate columns or separate rows for:

new;

replacement;

spare;

optional;

existing;

relocated.

Then review the commercial scope around each sign.

A sign line can be technically correct and still create quotation differences if accessories are unclear.

Check whether the following are included:

Scope Item	Confirm Before RFQ
Power Supplies	Included or excluded
Controllers	Included or excluded
Mounting Hardware	Included or excluded
Raceway	Included or excluded
Backboard	Included or excluded
Full-Size Template	Required or not
Spare Hardware	Quantity required
Packing	Standard or store-specific
Sample	Required or not
Shipping	Included or quoted separately

Consider 60 illuminated logo sets.

If each set requires two power supplies, the project needs approximately 120 power supplies.

If one quotation includes them and another excludes them, the sign quantity still matches, but the commercial scope does not.

The same problem occurs with templates.

For a 40-store rollout, 40 installation templates may be required. If one manufacturer includes them and another prices only the signs, the lower quotation may not actually represent a lower delivered cost.

Iduoduo’s documented production system transfers approved project information into BOMs, mounting specifications, QC checklists, packing requirements and frozen production versions so accessories and manufacturing requirements stay tied to the approved configuration.

A useful RFQ should make those scope boundaries visible before the supplier prepares the price.

What Should Sign Manufacturers Confirm Before Pricing?

Do not expect a supplier to silently accept every line without review.

For custom signage, some BOQ information may be complete enough for quotation while other items still require engineering confirmation.

Ask suppliers to identify assumptions affecting price.

Typical confirmation points include:

material grade;

material thickness;

acrylic thickness;

letter depth;

LED color or CCT;

voltage;

power-supply inclusion;

mounting method;

wire exit;

raceway or backboard;

outdoor construction;

packing method;

delivery basis.

A useful clarification table may look like:

Item	BOQ Requirement	Supplier Confirmation
CL-01	Aluminum returns	Confirm thickness
CL-01	4000K LED	Confirm available CCT
CL-01	110V project	Confirm PSU configuration
CL-02	Raceway mount	Confirm raceway included
LB-03	Outdoor	Confirm weather-protection structure

Ask suppliers to separate assumptions from alternatives.

For example:

Base Quote: 304 stainless steel
Alternative: Aluminum
Cost Difference: -$___

or:

Base Quote: Individual mounting
Alternative: Raceway mounting
Cost Difference: +$___

Do not allow a supplier to quietly replace the requested specification with a cheaper alternative and present only one total.

Alternatives can be valuable, but they should be visible.

Iduoduo’s engineering review covers structure, materials, LED, power, mounting, waterproofing, segmentation and production feasibility. The purpose is to identify problems such as wrong dimensions, unsuitable materials, lighting issues, power mismatches, mounting errors, wire-exit conflicts and packing risks before production.

A good RFQ creates room for those questions before the purchase order is issued.

How Do You Compare Sign Quotes Fairly?

Do not compare only the final price.

First make sure each quotation covers the same technical and commercial scope.

A useful comparison sheet can include:

Quote Item	Supplier A	Supplier B	Supplier C
Base Sign Construction	Included	Included	Included
Material	Aluminum	Aluminum	Stainless Steel
LED CCT	4000K	4000K	4000K
Power Supplies	Included	Excluded	Included
Raceway	Included	Included	Included
Templates	Included	Excluded	Included
Store Packing	Included	Standard Packing	Included
Sample	Included	Extra Cost	Included
Production Lead Time	15 days	12 days	18 days
Warranty	3 years	2 years	3 years

Now the price can be read in context.

Suppose the quotations are:

Supplier A: $82,400
Supplier B: $78,900
Supplier C: $87,600

Supplier B appears $3,500 cheaper than Supplier A.

But suppose Supplier B excludes:

120 power supplies;

40 installation templates;

store-specific packing;

one pre-production sample.

After those items are added, the total may exceed Supplier A.

The original price comparison was not wrong mathematically. It was incomplete commercially.

Also compare lead time against the required project schedule.

A lower price with a production schedule that misses the installation date may create far greater cost through delayed opening, installer rescheduling or expedited freight.

Before selecting a quotation, normalize:

materials;

dimensions;

lighting;

power;

mounting;

accessories;

packing;

sample requirements;

production lead time;

shipping basis;

warranty;

exclusions.

The strongest RFQ comparison is not “Who gave the lowest number?”

It is:

Who priced the same approved scope, with the fewest unresolved assumptions and the clearest path from quotation to production?

Once the BOQ passes that test, pricing becomes much easier to compare and later engineering work starts from a cleaner project record.

Need a Quote for Your Sign BOQ?

If your Sign BOQ, sign schedule, drawings, storefront photos, or specification files are already available, you can send them to Iduoduo for a manufacturing review. The engineering team can help check whether the information is sufficient for quotation and identify items that still need confirmation, such as size, material, illumination, voltage, mounting, wire exit, packaging, or destination requirements.

For multi-sign or multi-location projects, it is usually more useful to send the latest BOQ together with the matching drawing revision rather than only providing a total quantity. Iduoduo can then review the sign types, quantities, manufacturing feasibility, installation interfaces, and packing requirements before preparing a quotation.

If some specifications are still open, they do not need to be guessed. Mark them clearly in the BOQ and send the available project files. They can be reviewed during the quotation and engineering stage before the final production version is confirmed.