Domestic
Building cost guide based on BCIS rates from quarter 2 2025 to quarter 1 2026.
New build
New build cost guide
| Building type |
£ / m2 |
| Single storey one off housing (up to 3 units) |
£2,432 |
| Multi storey one off housing (up to 3 units) |
£2,813 |
| Single Storey estate housing |
£1,699 |
| Two storey estate housing |
£1,475 |
| Three storey estate housing |
£1,516 |
| Flats 1-2 storey |
£1,742 |
| Flats 3-5 storey |
£1,785 |
| Flats 6+ Storey |
£2,092 |
| Garages |
£716 |
| Conservatory |
£2,455 |
Extension
Extension cost guide
| Building type |
£ / m2 |
| Single storey extension |
£2,190 |
| Multi storey extension |
£2,963 |
Conversions and alterations
Conversions and alterations cost guide
| Building type |
£ / m2 |
| Housing conversions - attic, garage, etc. |
£1,327 |
