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 SO21 2AS
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 |
|---|---|---|---|---|
| Navaho, Hurdle Way582 m away | 375 m² | 534 m² | +159 m² +42% | 2021 |
| Oak Wood House, Cliff Way700 m away | 258 m² | 399 m² | +141 m² +55% | 2024 |
| Clease Cottage, Clease Way669 m away | 316 m² | 432 m² | +116 m² +37% | 2022 |
| Winton741 m away | 62 m² | 152 m² | +90 m² +145% | 2011 |
| Fair View, Compton Street352 m away | 86 m² | 163 m² | +77 m² +90% | 2019 |
| Parsonage Barn, Compton Street0 m away | 261 m² | 337 m² | +76 m² +29% | 2020 |
| 4, Bridge Cottages741 m away | 86 m² | 107 m² | +21 m² +24% | 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.