About Project Cost Lab

Project Cost Lab is an independent informational site from Rodway Labs, United Kingdom. It publishes compiled cost ranges and a calculator for common home projects.

We are not a contractor, architect or quantity surveyor. We do not inspect properties, arrange trades or issue tenders. Ranges are illustrations compiled in September 2026 from published UK trade guides.

Size, specification, region, access, occupation, listed-building uplift, VAT display, contingency and optional extras are editable because those knobs move a budget more than the project name. The mid figure is a band for planning, not a price. The VAT toggle is a display choice, not a tax ruling.

Get written quotes for the property on the same drawing. Do not treat a mid figure as a tender.

Not a quote. Figures on this page are illustrative UK cost bands for planning. They are not a tender, valuation or building-regulation ruling. Get written quotes for the property. Project Cost Lab (Rodway Labs) is not a contractor, architect or quantity surveyor. The mid figure is a band, not a price; the VAT toggle is a display choice, not a ruling.

Contact: hello@projectcostlab.co.uk