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 LL15 1YR
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 |
|---|---|---|---|---|
| Bryn Derw589 m away | 207 m² | 288 m² | +81 m² +39% | 2024 |
| 10, Maes Celyn0 m away | 118 m² | 181 m² | +63 m² +53% | 2021 |
| Rhyd-Y-Foel, Lon Cae Glas410 m away | 98 m² | 154 m² | +56 m² +57% | 2012 |
| 23, Tan Y Bryn444 m away | 120 m² | 161 m² | +41 m² +34% | 2024 |
| 41, Tan Y Bryn444 m away | 116 m² | 156 m² | +40 m² +34% | 2016 |
| Plas Isa Cottage195 m away | 119 m² | 155 m² | +36 m² +30% | 2021 |
| Mill Stream Cottage493 m away | 168 m² | 203 m² | +35 m² +21% | 2021 |
| Y Berllan195 m away | 163 m² | 196 m² | +33 m² +20% | 2017 |
| 1, Ty'N-Y-Groesffordd634 m away | 96 m² | 122 m² | +26 m² +27% | 2022 |
| Glaslyn195 m away | 63 m² | 78 m² | +15 m² +24% | 2024 |
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.