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 9EL
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, Clos Glanlliw695 m away | 88 m² | 165 m² | +77 m² +88% | 2025 |
| 50, Bryntirion Road354 m away | 162 m² | 227 m² | +65 m² +40% | 2024 |
| 2, Bryntirion Road354 m away | 92 m² | 136 m² | +44 m² +48% | 2023 |
| 4, Bryntirion Road354 m away | 87 m² | 130 m² | +43 m² +49% | 2025 |
| 16, Bryn Road456 m away | 109 m² | 146 m² | +37 m² +34% | 2024 |
| Neuadd Carmel, Carmel Road162 m away | 104 m² | 131 m² | +27 m² +26% | 2024 |
| 37, Heol Y Waun99 m away | 92 m² | 108 m² | +16 m² +17% | 2012 |
| 14, Clos Glanlliw695 m away | 97 m² | 112 m² | +15 m² +15% | 2013 |
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.