Guide
How to Do a Commercial Sign Takeoff From Architectural Drawing Sets
By Steve Sicard · June 2026 · 8 min read
If you bid commercial sign projects, the sign takeoff is where every job starts — and where most estimating mistakes happen. A thorough commercial sign takeoff requires reading a complete architectural drawing set, often 100–300 pages, and identifying every sign the project requires. Miss a sign type and you underbid. Miscount quantities and you lose money on installation. Get it right and you win the job at a margin that makes sense.
This guide walks through exactly how to do it — the same process SignBidPro's AI was trained on.
What Is a Sign Takeoff?
A sign takeoff is the process of reviewing a set of architectural drawings to identify every sign required by a commercial construction project. The output is a line-item list of sign types, quantities, dimensions, and specifications — the foundation of your bid. The term comes from construction estimating, where "taking off" quantities from drawings is the starting point for any cost estimate.
Where Signs Hide in Architectural Drawings
Signs appear in multiple places across a typical architectural drawing set. Missing any one of these sources means missing signs.
1. Coded Notes (most common)
Most architectural drawing sets use a coded notes table on each floor plan sheet. Each note has a number or letter that references specific items — room signage, fire extinguisher signs, occupancy signs, and more. These notes appear as small number callouts on the floor plan next to doors, walls, and equipment. The key: the coded notes table tells you what the sign type is. The floor plan callouts tell you how many. You need both.
2. Signage Schedule
Many projects include a dedicated signage schedule — a table that lists every sign type, size, color, material, and quantity. These often appear on a dedicated "Signage Plan" sheet or within the specifications. Important: The quantity shown in a signage schedule is often the number of sign types, not the number of installed signs. Always cross-reference against floor plan callouts.
3. Floor Plan Callouts
The floor plan is where you count. Every location where a sign is required will have a callout — a small number, letter, or symbol that references the coded notes or signage schedule. Count every callout, not just the types. This is the most common source of quantity errors in manual takeoffs. An estimator reads the signage schedule, sees "Room ID Sign — Qty 1," and assumes one sign. In reality there are 40 rooms, each requiring one sign. The floor plan callouts show 40 individual placements.
4. Exterior Elevations
Building identification signs, OHD clearance signs, and exterior wayfinding appear on the exterior elevation sheets — not the floor plans. These are easy to miss if you focus only on floor plans.
5. Specification Sections
The project specifications (often a separate document) may include signage sections that define materials, mounting methods, ADA compliance requirements, and additional sign types not shown on the drawings. Common spec sections for sign scope include Division 10 14 00 (Signage) and Division 10 44 00 (Fire Protection Specialties).
The Two-Source Method for Accurate Quantities
The most reliable way to count sign quantities accurately is to cross-reference two sources:
- →Identify sign types from the coded notes table or signage schedule
- →Count installed quantities from floor plan callouts
For every sign type you identify in the schedule, go to the floor plan and count every individual callout for that sign type. The floor plan count is the true installed quantity. This sounds time-consuming — because it is. On a 200-page drawing set with 40+ sign types, manually cross-referencing both sources takes hours. This is exactly what SignBidPro automates.
Step-by-Step Process
Step 1: Get organized before you start
Print or display the drawing set. Note the sheet prefix system — G-sheets are usually General notes, A-sheets are Architectural, S-sheets are Structural. Sign scope lives primarily in A-sheets and G-sheets.
Step 2: Find the coded notes tables
Scan each floor plan sheet for the coded notes legend. Highlight every note that references signage — room ID signs, occupancy signs, fire extinguisher signs, ADA signs, wayfinding, and any other sign type.
Step 3: Find the signage schedule
Search for a dedicated signage plan sheet (often labeled "A1.7" or similar) or a signage section in the specifications. Document every sign type listed.
Step 4: Count floor plan callouts
Go back to every floor plan and count every callout for each sign type you identified. Mark them off as you count to avoid double-counting or missing any.
Step 5: Review exterior elevations
Check every exterior elevation sheet for building ID signs, clearance signs, and exterior wayfinding.
Step 6: Review specifications
Scan the specification sections for additional sign requirements, material specifications, and ADA compliance requirements.
Step 7: Build your takeoff
Compile everything into a line-item list with sign type, quantity, dimensions, spec reference, and any notes. This is your sign takeoff.
Common Mistakes to Avoid
Relying on the signage schedule quantity alone
As discussed, schedule quantities often represent sign types, not installed counts. Always verify against floor plan callouts.
Missing coded notes on partial floor plan sheets
Large projects often have multiple enlarged floor plan sheets for different areas of the building. Each may have its own coded notes and callouts. Review every floor plan sheet, not just the overall plan.
Ignoring the specifications
Specs frequently define sign types that aren't shown on the drawings — particularly safety signs, gas detection labels, and compliance signs.
Not verifying against exterior elevations
Building ID signs are often only shown on exterior elevation sheets. If you only look at floor plans, you'll miss them.
How SignBidPro Automates This Process
The two-source method described above is exactly what SignBidPro's AI performs on your uploaded drawing sets. It reads every page, identifies every coded note and signage schedule entry, counts every floor plan callout, and reviews every exterior elevation — in minutes instead of hours.