01 · FREE TOOLS
Tools.
Answer the two questions every London homeowner asks before they start: what will it cost, and will it get permission. Free to use, no email required, and built on the same figures we use on real projects.
TOOL 01 · COST · LIVE
Extension cost calculator
Set your extension area, refurbishment area, specification and London zone for an indicative build cost, with professional fees, statutory costs, contingency and VAT shown as separate lines rather than buried in a single figure. Downloadable as a report.
TOOL 02 · PLANNING · LIVE
Planning feasibility assessment
Test your consent route against listing, conservation area status, Article 4 directions and the site constraints that add risk. Returns a likely route, the flags that will shape the application, and the next steps worth taking.
TOOL 03 · PROPERTY · LIVE
Free property potential report
Give us the address and we check listing, conservation area, Article 4 direction and every planning application decided on your street, then tell you what the site will realistically allow. Returned within 48 hours.
TOOL 04 · DESIGN · IN DEVELOPMENT
Extension configurator
Build your extension from a fixed set of options: house type, extension form, roof, glazing, materials and external works, with the drawing updating as you choose. Currently in development.
Thirty minutes with a registered architect. Free, and nothing is committed.