| extension cost per m2 uk 2022 | 0.46 | 0.6 | 2655 | 29 | 68 |
| extension cost per m2 uk 2023 | 0.44 | 0.1 | 2653 | 29 | 3 |
| average extension cost per m2 uk | 1.98 | 0.8 | 157 | 32 | 90 |
| extension cost per m2 | 1.42 | 0.3 | 2167 | 21 | 38 |
| average cost per m2 extension | 1.38 | 0.4 | 6011 | 29 | 25 |
| extension prices per m2 | 1.19 | 0.1 | 2797 | 23 | 15 |
| price per m2 extension | 0.58 | 0.3 | 1399 | 22 | 52 |
| house extension cost per m2 uk | 0.53 | 0.7 | 9963 | 30 | 6 |
| extension build costs per m2 uk | 1.61 | 0.1 | 997 | 31 | 88 |
| how much is an extension per m2 | 0.25 | 0.3 | 1111 | 31 | 68 |
| extension building costs per m2 uk | 0.61 | 0.5 | 740 | 34 | 93 |
| extension prices per m2 2023 | 0.96 | 0.3 | 8330 | 28 | 84 |
| cost to build an extension per m2 | 1.53 | 0.3 | 7529 | 33 | 12 |
| extension cost calculator uk 2023 | 1.43 | 0.1 | 6005 | 33 | 71 |
| extension costs uk 2023 | 1.19 | 0.3 | 1680 | 23 | 33 |
