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 NP18 2HB
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 |
|---|---|---|---|---|
| 25, Hazel Road476 m away | 39 m² | 86 m² | +47 m² +121% | 2015 |
| 6, Elm Close197 m away | 81 m² | 101 m² | +20 m² +25% | 2021 |
| 32, Willow Drive108 m away | 58 m² | 78 m² | +20 m² +34% | 2012 |
| 15, Larch Grove174 m away | 61 m² | 79 m² | +18 m² +30% | 2014 |
| 6, Waltwood Park Drive797 m away | 86 m² | 103 m² | +17 m² +20% | 2025 |
| 34, Waltwood Park Drive797 m away | 33 m² | 50 m² | +17 m² +52% | 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.