Renovation cost guides for London.

Real prices from 131+ completed MWB projects, so you can budget before you call anyone.

Kitchen renovation cost in London (2026)

Most MWB kitchen renovations in London cost £15,000–£40,000, depending on size, layout changes and finish. A typical project takes 4–8 weeks on site.

Bathroom renovation cost in London (2026)

Most MWB bathroom renovations in London cost £15,000–£40,000. A standard bathroom takes about 2–4 weeks on site.

Full house renovation cost in London (2026)

A full renovation with MWB costs around £2,000–£3,000 per m² of floor area. A 100 m² home is roughly £200,000–£300,000, taking 12–24 weeks.

House extension cost in London (2026)

Extensions with MWB cost £2,000–£4,000 per m². A 20 m² rear extension is roughly £40,000–£80,000, usually 12–16 weeks on site.

Loft conversion cost in London (2026)

Loft conversions with MWB start from £60,000, depending on type (dormer, hip-to-gable or mansard). Most take 8–12 weeks on site.

Flat refurbishment cost in London (2026)

A full flat refurbishment with MWB costs around £2,000–£3,000 per m²: roughly £100,000–£150,000 for a 50 m² one-bed. Mansion blocks need freeholder licences.

How to choose a renovation company in London

Pick a company that gives a detailed written quote, shows finished projects you can visit, carries insurance and offers a written guarantee. Ask these questions of any builder, including us.