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 SA4 9AB
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, Bryn Deri Close670 m away | 153 m² | 206 m² | +53 m² +35% | 2016 |
| 8, Ffordd Y Meillion845 m away | 75 m² | 125 m² | +50 m² +67% | 2014 |
| 41, Gors Road338 m away | 95 m² | 144 m² | +49 m² +52% | 2024 |
| 14, Golwg Y Garn215 m away | 84 m² | 132 m² | +48 m² +57% | 2021 |
| 15, Gors Road338 m away | 82 m² | 121 m² | +39 m² +48% | 2025 |
| 87, Gorseinon Road0 m away | 125 m² | 161 m² | +36 m² +29% | 2015 |
| 30, Pontardulais Road571 m away | 205 m² | 239 m² | +34 m² +17% | 2015 |
| 6, Pen Y Bryn Close721 m away | 194 m² | 226 m² | +32 m² +16% | 2016 |
| 2, Gelli Hyll Road388 m away | 57 m² | 84 m² | +27 m² +47% | 2011 |
| 2, Golwg Y Garn215 m away | 74 m² | 97 m² | +23 m² +31% | 2023 |
| 86, Gorseinon Road0 m away | 92 m² | 113 m² | +21 m² +23% | 2023 |
| 102, Gorseinon Road0 m away | 66 m² | 85 m² | +19 m² +29% | 2025 |
| 11, Golwg Y Garn215 m away | 70 m² | 87 m² | +17 m² +24% | 2025 |
| 7, St Davids Close692 m away | 74 m² | 90 m² | +16 m² +22% | 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.