Renovation & Building Costs UK
UK costs for renovations, extensions, new builds, lofts, garage conversions, structural steel and major building work.
Renovation & Building guides
House renovation
Typical UK whole-house renovation costs, contingency, labour and the main factors that change a refurbishment budget.
£43,530–£110,350 for a 3-bed houseView guide →Cost guideHouse extension
Plan a UK house extension budget with typical per-square-metre costs, major cost drivers and regional considerations.
£2,000–£3,500 / m²View guide →Cost guideBuild a house
UK new-build and self-build costs per square metre, by house size, specification and project complexity.
£1,400–£3,000 per m²View guide →Cost guideLoft conversion
Typical UK loft conversion costs for rooflight, dormer, hip-to-gable and more complex projects.
£35,000–£85,000View guide →Cost guideGarage conversion
Typical UK garage conversion costs by garage type, floor area and intended use.
£10,000–£20,000View guide →Cost guideConservatory
Typical 2026 UK conservatory costs for lean-to, Victorian, Edwardian and higher-spec projects.
£9,000–£18,000 for common 3.5m × 3.5m stylesView guide →Cost guideGarden room
Typical UK garden room and garden office costs from mini self-assembly rooms to premium turnkey cabins.
£5,250 mini room / £11,750 office podView guide →Cost guideRSJ beam
UK RSJ steel beam supply and installation costs for openings, extensions and load-bearing wall work.
£200–£950 beam + £300–£750 installationView guide →Cost guideBuilder day rate
Typical UK builder day-rate planning ranges and the factors that affect labour pricing.
£180–£350 / dayView guide →