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 CF47 0UH
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 |
|---|---|---|---|---|
| 10, Lower High Street888 m away | 86 m² | 128 m² | +42 m² +49% | 2026 |
| 6, Davies Terrace913 m away | 65 m² | 107 m² | +42 m² +65% | 2025 |
| 54, Twynyrodyn Road773 m away | 56 m² | 93 m² | +37 m² +66% | 2021 |
| Hillside, Dyke Street747 m away | 105 m² | 140 m² | +35 m² +33% | 2024 |
| 46, Ernest Street511 m away | 104 m² | 137 m² | +33 m² +32% | 2014 |
| 97, Gilfach Cynon757 m away | 78 m² | 111 m² | +33 m² +42% | 2014 |
| 89, Gilfach Cynon757 m away | 40 m² | 72 m² | +32 m² +80% | 2024 |
| 17, Milbourne Close0 m away | 108 m² | 139 m² | +31 m² +29% | 2016 |
| 5, Woodland Place952 m away | 80 m² | 110 m² | +30 m² +38% | 2023 |
| 5, Clare Street441 m away | 81 m² | 110 m² | +29 m² +36% | 2016 |
| 3, Milton Terrace885 m away | 112 m² | 139 m² | +27 m² +24% | 2020 |
| 3, Hankey Terrace246 m away | 77 m² | 103 m² | +26 m² +34% | 2021 |
| 36, William Street754 m away | 76 m² | 101 m² | +25 m² +33% | 2026 |
| 9, The Oval976 m away | 67 m² | 92 m² | +25 m² +37% | 2018 |
| 5, Newton Terrace871 m away | 82 m² | 106 m² | +24 m² +29% | 2019 |
| 4, Primrose Hill573 m away | 82 m² | 106 m² | +24 m² +29% | 2014 |
| 4, Hankey Place207 m away | 52 m² | 75 m² | +23 m² +44% | 2026 |
| 21, Mary Street666 m away | 72 m² | 95 m² | +23 m² +32% | 2021 |
| Brynseion Buildings, Foundry Place839 m away | 41 m² | 64 m² | +23 m² +56% | 2018 |
| 18, Walters Terrace687 m away | 61 m² | 84 m² | +23 m² +38% | 2016 |
| 20, Milbourne Terrace106 m away | 81 m² | 102 m² | +21 m² +26% | 2023 |
| 11, Gladstone Terrace227 m away | 83 m² | 104 m² | +21 m² +25% | 2023 |
| 14, Railway Terrace280 m away | 50 m² | 71 m² | +21 m² +42% | 2011 |
| 21, Walters Terrace687 m away | 64 m² | 84 m² | +20 m² +31% | 2026 |
| 1, Hampton Street737 m away | 72 m² | 92 m² | +20 m² +28% | 2026 |
| 11, Arfryn Terrace701 m away | 92 m² | 111 m² | +19 m² +21% | 2015 |
| 3, Phillips Terrace634 m away | 58 m² | 75 m² | +17 m² +29% | 2011 |
| 2, Milton Terrace885 m away | 86 m² | 102 m² | +16 m² +19% | 2025 |
| 17, Arfryn Terrace701 m away | 71 m² | 87 m² | +16 m² +23% | 2014 |
| 4, Russell Terrace807 m away | 95 m² | 110 m² | +15 m² +16% | 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.