Finding extended homes…
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Homes within 1 km whose energy certificates show the floor area growing: extensions, loft and garage conversions. Tap a home on the map or in the list for its full history. Back to KT20 6TL
Not every extension shows here. We only see building work when a new energy certificate is lodged, which happens when a home is sold, let or newly built. A loft or extension added since then won't appear, even with planning permission and building control sign-off, because those records aren't published as open data outside London. Missing work doesn't mean missing paperwork.
| Home | Before | After | Added | Recorded |
|---|---|---|---|---|
| 8, Green Lane257 m away | 99 m² | 192 m² | +93 m² +94% | 2019 |
| 22, Green Lane257 m away | 105 m² | 179 m² | +74 m² +70% | 2025 |
| 73, Chipstead Lane750 m away | 83 m² | 144 m² | +61 m² +73% | 2022 |
| 26, Green Lane0 m away | 111 m² | 168 m² | +57 m² +51% | 2021 |
| Rosedene, Brighton Road428 m away | 81 m² | 131 m² | +50 m² +62% | 2018 |
| 13, Chipstead Lane750 m away | 61 m² | 107 m² | +46 m² +75% | 2026 |
| 46, Smithy Lane332 m away | 90 m² | 136 m² | +46 m² +51% | 2021 |
| Merton Vean, Millfield Lane632 m away | 187 m² | 232 m² | +45 m² +24% | 2021 |
| 63, Chipstead Lane750 m away | 123 m² | 162 m² | +39 m² +32% | 2022 |
| 4, Josephine Avenue503 m away | 54 m² | 93 m² | +39 m² +72% | 2021 |
| Tudor House, Chipstead Lane930 m away | 213 m² | 249 m² | +36 m² +17% | 2022 |
| Tressady, Brighton Road575 m away | 83 m² | 112 m² | +29 m² +35% | 2014 |
| Flat 13, York House, Brighton Road373 m away | 47 m² | 75 m² | +28 m² +60% | 2013 |
| 4, Chipstead Lane795 m away | 89 m² | 115 m² | +26 m² +29% | 2022 |
| Hamari, Brighton Road428 m away | 89 m² | 114 m² | +25 m² +28% | 2026 |
| 11, Smithy Lane244 m away | 127 m² | 148 m² | +21 m² +17% | 2021 |
| 56, Josephine Avenue503 m away | 86 m² | 104 m² | +18 m² +21% | 2022 |
| Gera, Brighton Road319 m away | 80 m² | 96 m² | +16 m² +20% | 2025 |
From energy performance certificates (MHCLG): a later certificate shows at least 15 m² and 15% more floor area than an earlier one (and no more than 2.5 times, to leave out typing errors). Some changes come from a more careful measurement rather than building work. Addresses: HM Land Registry. Contains HM Land Registry data © Crown copyright and database right 2026, OGL v3.0.