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 NN7 1EL
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 |
|---|---|---|---|---|
| 12, Northampton Road383 m away | 81 m² | 143 m² | +62 m² +77% | 2022 |
| 12, The Greenyard57 m away | 163 m² | 219 m² | +56 m² +34% | 2025 |
| 21, Northampton Road383 m away | 144 m² | 198 m² | +54 m² +38% | 2014 |
| 19, Bedford Road East643 m away | 37 m² | 88 m² | +51 m² +138% | 2014 |
| 99, High Street313 m away | 174 m² | 209 m² | +35 m² +20% | 2017 |
| 30, Highfield Way727 m away | 108 m² | 141 m² | +33 m² +31% | 2016 |
| 16, Bedford Road East643 m away | 55 m² | 73 m² | +18 m² +33% | 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.