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 N20 8AN
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 |
|---|---|---|---|---|
| 2, Hadar Close791 m away | 518 m² | 940 m² | +422 m² +81% | 2009 |
| Woodlands, Pine Grove361 m away | 594 m² | 998 m² | +404 m² +68% | 2024 |
| 18, Grange Avenue717 m away | 253 m² | 629 m² | +376 m² +149% | 2015 |
| 14, Grange Avenue717 m away | 337 m² | 634 m² | +297 m² +88% | 2024 |
| 1, The Pastures0 m away | 218 m² | 512 m² | +294 m² +135% | 2014 |
| 18, Harmsworth Way382 m away | 388 m² | 660 m² | +272 m² +70% | 2020 |
| 9, The Pastures0 m away | 179 m² | 442 m² | +263 m² +147% | 2016 |
| 101, Greenway791 m away | 172 m² | 408 m² | +236 m² +137% | 2026 |
| 11, Grange Avenue701 m away | 345 m² | 540 m² | +195 m² +57% | 2022 |
| 7, Grange Avenue701 m away | 275 m² | 467 m² | +192 m² +70% | 2025 |
| 31, Harmsworth Way395 m away | 167 m² | 322 m² | +155 m² +93% | 2015 |
| 56, Greenway789 m away | 164 m² | 304 m² | +140 m² +85% | 2023 |
| 47, Pine Grove359 m away | 253 m² | 381 m² | +128 m² +51% | 2024 |
| 20, Harmsworth Way382 m away | 333 m² | 456 m² | +123 m² +37% | 2026 |
| 2, Willow End836 m away | 107 m² | 229 m² | +122 m² +114% | 2024 |
| 15, Rowben Close920 m away | 120 m² | 234 m² | +114 m² +95% | 2024 |
| 14, Oaklands Road321 m away | 190 m² | 296 m² | +106 m² +56% | 2010 |
| 21, Harmsworth Way395 m away | 280 m² | 370 m² | +90 m² +32% | 2025 |
| Spindlewood, 62, Totteridge Village277 m away | 181 m² | 270 m² | +89 m² +49% | 2020 |
| 5, Grange Avenue701 m away | 507 m² | 593 m² | +86 m² +17% | 2014 |
| 21, West Hill Way924 m away | 119 m² | 202 m² | +83 m² +70% | 2019 |
| 17, Totteridge Village367 m away | 322 m² | 404 m² | +82 m² +25% | 2022 |
| 12, Oaklands Road329 m away | 189 m² | 258 m² | +69 m² +37% | 2018 |
| 16, Harmsworth Way382 m away | 238 m² | 303 m² | +65 m² +27% | 2014 |
| 1, West Hill Way924 m away | 129 m² | 193 m² | +64 m² +50% | 2024 |
| 20, Oaklands Road321 m away | 226 m² | 278 m² | +52 m² +23% | 2026 |
| 5, The Grange580 m away | 143 m² | 195 m² | +52 m² +36% | 2020 |
| 42, West Hill Way888 m away | 141 m² | 192 m² | +51 m² +36% | 2019 |
| 17, The Pastures0 m away | 240 m² | 288 m² | +48 m² +20% | 2015 |
| 48, Pine Grove359 m away | 173 m² | 221 m² | +48 m² +28% | 2014 |
| 56, Meadow Close975 m away | 91 m² | 127 m² | +36 m² +40% | 2022 |
| 1, Meadow Close975 m away | 55 m² | 90 m² | +35 m² +64% | 2015 |
| 40, Greenway Close964 m away | 117 m² | 149 m² | +32 m² +27% | 2021 |
| 3, Belmont Close849 m away | 158 m² | 186 m² | +28 m² +18% | 2023 |
| 52, Greenway789 m away | 154 m² | 179 m² | +25 m² +16% | 2015 |
| Grange Lodge, Grange Avenue717 m away | 101 m² | 122 m² | +21 m² +21% | 2025 |
| 49, Meadow Close975 m away | 90 m² | 110 m² | +20 m² +22% | 2026 |
| 77, Leeside974 m away | 90 m² | 109 m² | +19 m² +21% | 2024 |
| 73, Crocus Field965 m away | 94 m² | 113 m² | +19 m² +20% | 2021 |
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.