Instant Estimate
Project Cost Calculator
Get an immediate, data-driven estimate for your home extension or loft conversion. Our calculator uses real-time London construction rates.
Step 1 of 3Project Type
Live Estimate
TypePending
Size30 sqm
FinishPending
Estimated Cost
£---
* Excludes VAT & Planning Fees
Transparent Pricing
Our estimates include all structural work, labour, and materials. No hidden fees.
Accurate Timelines
Every quote comes with a projected critical path timeline from design to handover.
Price Match Guarantee
We will match any like-for-like quote from an FMB accredited builder in London.