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Loft conversion builders in London

Firms in London who list dormer, hip-to-gable, mansard and roof-light loft conversions, ranked by verified customer reviews and then distance. Nobody pays to move up this list, and a message goes to the one builder you choose.

Showing 1–4 of 4 builders for roofing in LondonSorted by verified reviews, then distance. Never by payment.
The Finns Group Ltd

TrustMark registered building firm in London offering loft conversions, kitchens and bathrooms and roofing.

TrustMark
London · 1.2 miRegistered company, not yet verified
Phone02070 469 849Mention MyLocalBuilders when you call
View profile

TrustMark registered building firm in London offering loft conversions and roofing.

TrustMark
London · 8.0 miRegistered company, not yet verified
PhoneNo phone number yet: see their profile
View profile
Rooftops of a terrace of brick houses in Cheltenham, with chimney stacks and clay pots, party-wall gable ends and television aerials in low winter sun
Photo by Richard Bell on Unsplash (Unsplash Licence).

Before you contact a builder

Our guide to loft conversion builders covers what the job involves, the approvals it needs and what to check before you hire. For prices, read Loft conversion cost in the UK (2026 guide). Local planning, building control and housing notes are on the London page.

Loft conversion builders in London: 10 Checked Firms — MyLocalBuilders.uk