5 Minute Estimate | Construction Cost Estimator
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Voice notes, photos, drawings or project documents? Those are estimated by Max, our WhatsApp bot — message Max on WhatsApp. This browser estimator is a secondary tool for manual entry, demos, and testing.

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1

Project Basics

Appears on the report cover — saved automatically
Leave blank for first issue
Rev Date Description By Checked
2

Location & Regional Pricing

Full site address as it should appear on the cover sheet
Full postcode for the cover — separate from pricing prefix below
Enter letters only — up to 4 characters
Defaults to same as material — adjust independently if needed
3

Geometry

Gross Internal Area across all storeys
Total external wall perimeter at ground level
Use 0–5° for flat roofs
Total count of windows incl. roof lights
Front / back / side external door sets
% of wall area that is a shared party wall — reduces external wall cost (e.g. 25% for semi-detached extension)

Derived Geometry Auto-calculated ?

4

Structural Specification

5

Site & Logistics

6

Finishes & Services

Tick items to include in the estimate. Plastering and Electrical / Plumbing First Fix are selected by default.

Used to scale plumbing quantities more accurately
Shown when Kitchen Allowance is ticked
Shown when Heating System Allowance is ticked
7

Commercial Options

Applied to material costs only. Use with months below.
e.g. 12 months at 5% pa → factor ×1.050
Offline
Drop JSON file to import estimate