Loft conversion calculator

Quick, banded estimate with regional multiplier, flat add-ons, and planning notes for each conversion type.

Inputs

Conversion type

Finish level

Good quality finishes

Property type (sets area)

You can override the area manually below.

Postcode district

Usable loft area

15–50 m² typical range

15 m²50 m²

Estimate

Enter a postcode district to calculate an estimate.

Enter a postcode to see your estimate.