Building cost guides

What common residential jobs cost in the UK in 2026, what pushes the price up, and a quick budget calculator for each.

Cost per m² for single and double-storey extensions, where the money goes, and the extras people forget.

Velux, dormer, hip-to-gable and mansard conversions compared, with typical prices and timescales.

Need the whole job measured?

Send us your drawings and we take off every item, price it at current UK rates and send back an itemised estimate. From £120, in 3–5 working days.