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 EN9 3SU
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 |
|---|---|---|---|---|
| 9, Crown Hill1000 m away | 284 m² | 580 m² | +296 m² +104% | 2021 |
| Ninefield House, Woodgreen Road802 m away | 208 m² | 301 m² | +93 m² +45% | 2023 |
| Tree Tops, Copthall Green462 m away | 124 m² | 197 m² | +73 m² +59% | 2019 |
| Laundry Cottage, Upshirebury Green0 m away | 79 m² | 128 m² | +49 m² +62% | 2022 |
| Lower Lodge Cottage, Long Street972 m away | 166 m² | 197 m² | +31 m² +19% | 2021 |
| 4, Willmott Cottage, Copthall Green350 m away | 63 m² | 85 m² | +22 m² +35% | 2019 |
| 22, Woodgreen Road802 m away | 108 m² | 128 m² | +20 m² +19% | 2022 |
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.