Building Cost Guides — London 2025
Real figures from real London projects. Not national averages, not ranges designed to impress. What each type of project actually costs, what's included, what isn't, and what changes the price.
Loft Conversion Cost London 2025
£18,000 – £120,000+Velux, dormer, hip-to-gable, L-shaped and mansard conversion costs — what they include, what they don't, and the eight factors that move the price.
House Extension Cost London 2025
£35,000 – £160,000+Rear extensions, side returns, wrap-arounds, kitchen extensions and double-storey — real London prices with a breakdown of what's included and what changes the figure.
House Refurbishment Cost London 2025
£20,000 – £200,000+Partial refurbs, full flat renovations, and complete Victorian terrace transformations — what each level includes and the six factors that drive the final figure.
Kitchen Renovation Cost London 2025
£8,000 – £40,000+Kitchen replacements, full renovations, structural openings, and kitchen-plus-extension — honest 2025 prices with clear inclusions and exclusions.
Bathroom Renovation Cost London 2025
£6,000 – £25,000+Small refresh, full renovation, and luxury bathroom fit-out — what's included at each level, what client-supplies, and what changes the price.
Want a figure for your specific project?
Cost guides give you a realistic range — but the only way to get a number that reflects your actual property, your specific scope, and your current timeline is to tell us about your project. We respond within a few hours.