About Project Cost Lab

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

We are not a contractor, architect or quantity surveyor. Ranges are illustrations compiled in September 2026 from published UK trade guides. Size, specification, region, access, occupation, listed-building uplift, VAT treatment, contingency and optional extras are editable because those knobs move a budget more than the project name.

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