Loft conversion
Turning a loft into a habitable room, with new floor structure, a staircase, dormers or rooflights and the insulation and fire separation that go with them. The published benchmark for loft conversion across the country stands at £42,500, a national median derived from pricing across 12 UK towns researched in August 2026. This type of work is alternatively referred to as an attic conversion, dormer loft conversion, or simply converting a loft. Feedback across 27 rated firms yields a median rating of 5.0, with scores spanning from 3.7 to 5.0 across an aggregate of 452 reviews. Portfolios across the sector commonly extend into adjacent building work, with 27 firms taking on extensions alongside loft work.
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Builders who do loft conversions
Worth knowing
- The single most-reviewed firm accounts for 45 reviews out of the 452 total customer reviews logged for this work.
- Online presence is widespread among these contractors, with 29 of 30 operating their own website.
- Records at Companies House show that 2 of 30 are active companies incorporated between 2019 and 2020.
- Beyond extensions, supplementary work among these providers includes 24 offering renovation and refurbishment, 11 undertaking garage conversion, and 2 delivering groundwork and foundations.