UK Build Costs Index: Q3 2024

Construction cost inflation peaked in late 2022 but remains historically high. The table below represents median tender pricing for residential projects outside of Central London.

Project Type	Cost per m² (Low Spec)	Cost per m² (High Spec)
New Build (Standard Traditional)	£1,800	£2,600+
Single-Storey Extension	£2,200	£3,200+
Loft Conversion	£2,000	£2,800+
Basement Retrofit	£4,500	£6,500+

Note: Excludes VAT, professional fees (architect, structural engineer), and statutory application fees.