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 CF81 8LB
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 |
|---|---|---|---|---|
| Llwyndyrys, Western Drive724 m away | 86 m² | 199 m² | +113 m² +131% | 2021 |
| Britannia House, Britannia Terrace642 m away | 117 m² | 215 m² | +98 m² +84% | 2024 |
| 1, The Drive152 m away | 74 m² | 117 m² | +43 m² +58% | 2020 |
| 5, Gwerthonor Lane374 m away | 55 m² | 92 m² | +37 m² +67% | 2023 |
| Kia-Ora, Nydfa Road994 m away | 94 m² | 125 m² | +31 m² +33% | 2016 |
| 43, Hanbury Street938 m away | 79 m² | 108 m² | +29 m² +37% | 2016 |
| 2, Marwyn Gardens832 m away | 77 m² | 102 m² | +25 m² +32% | 2019 |
| 27, Gwerthonor Road208 m away | 103 m² | 126 m² | +23 m² +22% | 2022 |
| 24, Commercial Street203 m away | 36 m² | 59 m² | +23 m² +64% | 2020 |
| 46, Lewis Crescent277 m away | 82 m² | 104 m² | +22 m² +27% | 2023 |
| 6, Heol Fach736 m away | 91 m² | 112 m² | +21 m² +23% | 2023 |
| 14, Thomas Street279 m away | 78 m² | 97 m² | +19 m² +24% | 2015 |
| 1, Heol Fach736 m away | 90 m² | 108 m² | +18 m² +20% | 2024 |
| 6, Marwyn Gardens832 m away | 80 m² | 96 m² | +16 m² +20% | 2022 |
| 4, Park Drive952 m away | 95 m² | 111 m² | +16 m² +17% | 2014 |
| 7, The Square677 m away | 68 m² | 83 m² | +15 m² +22% | 2024 |
| 21, Gwerthonor Place111 m away | 84 m² | 99 m² | +15 m² +18% | 2023 |
| 9, Britannia Walk764 m away | 84 m² | 99 m² | +15 m² +18% | 2022 |
| 85, Gilfach Street920 m away | 94 m² | 109 m² | +15 m² +16% | 2014 |
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.