Construction drawing takeoff
Measured or flagged. Never guessed.
Every quantity in your PDF drawings is checked against what the architect wrote. You only fix what is flagged.
Fictional residenceA-101 Ground floorIllustrative exampleRooms on this sheet
BedroomProven
272.9 sq ft
- Written on the drawing
- 14'-4" x 19'-0" = 272.3 sq ft
- Difference
- +0.2%
StorageTo check
48.6 sq ft
- Written on the drawing
- No dimension
- Difference
- None
GarageFlagged
186.0 sq ft
- Written on the drawing
- 349.0 sq ft
- Difference
- −46.7%
The takeoff where every quantity has its proof
Mensor reads your drawings, measures with code and checks every quantity against the architect’s dimensions, areas and schedules. Nothing is guessed: whatever cannot be proven is marked.
- Add the PDF drawing, from your AI assistant or in Mensor.
- Mensor reads every sheet and measures with code.
- The checker compares each quantity with the drawing.
- Fix what is flagged, then export.
[ Takeoff ]
The whole takeoff of a sheet, checked
Rooms and floors
Net area in sq ft and m², perimeter, checked against the written dimensions and areas.
Walls and partitions
Length in linear feet, by partition type read from the legend.
Doors, windows and symbols
Counted across every sheet, then checked against the door and window schedules.
Foundation
Walls, footings, slabs and piers, in linear feet, sq ft and cubic yards.
Roof
Slopes with their pitch, ridges, valleys, hips and eaves.
Scale
Read on every sheet and confirmed by the dimensions. A doubtful scale is flagged.
[ Statuses ]
Three statuses, readable at a glance
The status comes from a numeric checker, never from an AI model. An estimated value is never proven.
- Proven
The measurement matches something the architect wrote: a dimension, an area or a schedule.
- To check
Nothing written on the drawing can confirm the measurement. It is counted separately.
- Flagged
The measurement contradicts the drawing, or it is missing. The estimator fixes it on the drawing.
[ Takeoff ]
The takeoff, line by line
Each line gives the quantity, its method, what the drawing says and the difference. The total keeps what is proven apart from the rest.
Fictional residenceA-101 Ground floorIllustrative values.| Item | Method | Quantity | Written on the drawing | Difference | Status |
|---|---|---|---|---|---|
| Bedroom | Measured | 272.9 sq ft | 14'-4" x 19'-0" = 272.3 sq ft | +0.2% | Proven |
| Storage | Measured | 48.6 sq ft | No dimension | None | To check |
| Garage | Measured | 186.0 sq ft | 349.0 sq ft | −46.7% | Flagged |
| Doors P1 | Counted | 6 | Door schedule: 6 | 0 | Proven |
| Windows F1 | Counted | 11 | Window schedule: 12 | −1 | Flagged |
| Partitions C1 | Measured | 143.5 lin. ft | No length written | None | To check |
| Takeoff total | Proven2To check2Flagged2 | ||||
[ Who it’s for ]
Built for the people who take off drawings
Mensor sells estimator time and confidence in the numbers.
Contractors bidding on public tenders
Take off the bid set before closing and see right away what is not proven.
Flooring, drywall and paint subcontractors
Areas and lengths by room, with the difference against the architect’s dimensions.
Residential general contractors
A takeoff per floor, with doors and windows counted against the schedules.
Independent estimators
Fix only what is flagged instead of measuring everything again.
[ Why Mensor ]
What sets us apart
-
No proof, no green
A quantity is proven only when the drawing writes it. Otherwise it is to check or flagged.
-
AI writes no numbers
Quantities are computed by code from the drawing. Your assistant quotes them as they are.
-
Quantities, not prices
Mensor stops at the takeoff. Your bid stays in your hands.
-
Your drawings stay in Québec
Drawings, corrections and results are kept on our servers in Beauharnois.
Try Mensor on one of your drawings
Mensor is in a pilot with contractors and estimators in Québec.
Write to us with the kind of drawings you take off. We reply with access and a first takeoff on one of your drawings.