How do I convert a floor plan to a bill of quantities?

Upload your floor plan to Enormous Buildings. The AI automatically detects the scale, identifies all building elements (walls, doors, windows, floors), measures quantities, categorizes by trade, and generates a complete BoQ in under 60 seconds. Export to Excel, CSV, or PDF.

Can AI generate a BoQ from a PDF floor plan?

Yes. Enormous Buildings accepts PDF files along with PNG and JPG formats. The AI processes the PDF, identifies all architectural elements, and generates a complete bill of quantities automatically.

What file formats work for floor plan to BoQ conversion?

Enormous Buildings supports PDF, PNG, JPG, and JPEG formats. Both digital drawings and scanned blueprints can be processed, though clear, high-resolution drawings produce the most accurate results.

How accurate is AI floor plan to BoQ conversion?

AI floor plan to BoQ conversion achieves 95–99% accuracy on clear, properly scaled drawings. All quantities can be reviewed and edited after generation, giving you full control over the final output.

Floor Plan to BoQ: How to Turn Any Drawing Into a Bill of Quantities

Turning a floor plan into a bill of quantities used to take hours. Now it takes seconds. Here's exactly how the process works—and how to get the best results from your drawings.

From Floor Plan to Bill of Quantities: The Modern Way

Converting a floor plan into a bill of quantities is the core workflow of Enormous Buildings. This guide explains exactly what happens when you upload a drawing—and how to get the most accurate BoQ possible.

What You Need Before You Start

Required

A floor plan drawing in PDF, PNG, or JPG format
The drawing should show room layouts, walls, doors, and windows

Helpful (But Not Required)

Door and window schedules
Elevation drawings
Section drawings
MEP (mechanical, electrical, plumbing) drawings
Specification notes

The more information in your drawing, the more comprehensive your BoQ will be. But Enormous Buildings can generate a useful BoQ from a basic floor plan alone.

The Floor Plan to BoQ Process

Step 1: Upload Your Drawing

Upload your floor plan to Enormous Buildings. The system accepts:

PDF files — the most common format for architectural drawings
PNG images — high-resolution raster images
JPG/JPEG images — compressed image files
Scanned drawings — even hand-drawn plans can work if they're clear

Step 2: AI Analysis (Automatic)

Once uploaded, the AI begins analyzing your drawing:

Scale Detection: The AI identifies the drawing scale by looking for scale bars, dimension annotations, or typical architectural proportions. This is critical—all measurements depend on correct scale.

Element Identification: Computer vision models scan the drawing and identify:

Walls — external, internal, load-bearing, partition
Rooms — enclosed spaces with defined boundaries
Doors — shown as arcs or gaps in walls
Windows — shown as parallel lines in walls
Other openings — ventilation, access panels
Stairs — shown as parallel lines with direction arrows
Fixtures — toilets, sinks, baths, kitchen units (if shown on plan)

Measurement: For each identified element, the AI calculates:

Wall lengths — measured along centerlines or faces
Floor areas — calculated per room (length × width)
Wall areas — wall length × height (standard heights or from drawing)
Ceiling areas — same as floor area per room
Door counts — counted by type
Window counts — counted by type
Skirting lengths — measured along wall bases
Cornice lengths — measured along wall tops

Step 3: Trade Categorization (Automatic)

All measured quantities are organized by construction trade:

Masonry — wall construction
Plastering — internal and external wall finishes
Flooring — screeds, tiling, timber, finishes
Ceilings — plaster, suspended, paint
Doors — frames, doors, ironmongery
Windows — frames, glazing, fittings
Painting — walls, ceilings, woodwork
Tiling — floor and wall tiles
Special items — stairs, balconies, special features

Step 4: BoQ Generation (Automatic)

The AI compiles all quantities into a structured bill of quantities with:

Item numbers
Clear descriptions
Correct units (m, m², m³, nos)
Calculated quantities
Trade-based organization

Step 5: Review and Edit (Optional)

Review your generated BoQ and make any adjustments:

Edit quantities if you have specific requirements
Add custom items not shown on the drawing
Remove items not needed for your project
Adjust descriptions to match your specification

Step 6: Export

Export your finished BoQ:

Excel (.xlsx) — for further editing and pricing
CSV — for import into other software
PDF — for professional submission

Tips for Best Results

Use High-Quality Drawings

The clearer your drawing, the more accurate your BoQ. Ensure:

Lines are sharp and visible
Text and labels are legible
The drawing isn't skewed or distorted
Scale information is included if possible

Include All Relevant Drawings

If you have multiple drawings (floor plans for different levels, elevations, sections), upload the most detailed floor plan first. You can always add more information manually after the BoQ is generated.

Check Room Labels

Room labels help the AI understand the function of each space, which affects the types of finishes assigned. For example, a "bathroom" will get waterproof tiling, while a "living room" will get standard floor finishes.

Verify Scale

After generation, check a known measurement against the BoQ. If your living room is 5m × 4m but the BoQ shows 50m × 40m, the scale detection may have failed. This is rare but worth checking.

Review Unusual Quantities

Scan the BoQ for any quantities that seem too high or too low. These are usually easy to spot and quick to edit.

What You Get in Your Generated BoQ

A typical BoQ generated from a residential floor plan includes:

Floor Finishes

Floor tiling areas per room (m²)
Screed quantities (m²)
Skirting board lengths (m)

Wall Finishes

Internal plastering areas (m²)
External plastering areas (m²)
Wall painting areas (m²)
Wall tiling (wet areas) (m²)

Ceiling Finishes

Ceiling plaster areas (m²)
Ceiling paint areas (m²)

Doors

Door counts by type (nos)
Door frame quantities (m)

Windows

Window counts by type (nos)

Other

Cornice lengths (m)
Any special features identified on the plan

Common Questions About Floor Plan to BoQ Conversion

Can it handle multi-story buildings?

Yes. Upload the floor plan for each level. The AI processes each level separately and you can combine the results.

Does it work with hand-drawn plans?

It can, if the drawing is clear and properly proportioned. Digital drawings produce the best results, but scanned hand-drawn plans with clear lines and labels can work well.

What if my drawing doesn't have a scale bar?

The AI uses multiple methods to detect scale, including dimension annotations and typical architectural proportions. If scale can't be determined, you'll be prompted to enter it manually.

Can I edit the BoQ after generation?

Yes. All quantities, descriptions, and items are fully editable. You can add, remove, or modify any line item.

From Drawing to BoQ in 60 Seconds

The days of spending hours measuring drawings are over. Upload your floor plan to Enormous Buildings and get a complete, professional bill of quantities in under 60 seconds.

Convert your floor plan to BoQ →