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 SA7 9JR
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 |
|---|---|---|---|---|
| Maes-Y-Gwilog Farm505 m away | 266 m² | 388 m² | +122 m² +46% | 2014 |
| 106, Cae Morfa842 m away | 106 m² | 173 m² | +67 m² +63% | 2026 |
| 272, Heol Dulais924 m away | 58 m² | 125 m² | +67 m² +116% | 2025 |
| 7, Lon Brynawel814 m away | 49 m² | 115 m² | +66 m² +135% | 2025 |
| 51, Park Avenue388 m away | 66 m² | 124 m² | +58 m² +88% | 2011 |
| 42, Crymlyn Gardens784 m away | 58 m² | 114 m² | +56 m² +97% | 2020 |
| 72, Cae Morfa842 m away | 113 m² | 168 m² | +55 m² +49% | 2013 |
| 32, Park Drive669 m away | 52 m² | 107 m² | +55 m² +106% | 2012 |
| 36, Bronwydd713 m away | 53 m² | 105 m² | +52 m² +98% | 2013 |
| 45, Bronwydd713 m away | 52 m² | 103 m² | +51 m² +98% | 2025 |
| 32, Park Avenue655 m away | 117 m² | 168 m² | +51 m² +44% | 2021 |
| 16, Heol Barcud315 m away | 99 m² | 147 m² | +48 m² +48% | 2015 |
| 51, Crymlyn Gardens784 m away | 58 m² | 105 m² | +47 m² +81% | 2019 |
| 16, Cae Morfa842 m away | 80 m² | 125 m² | +45 m² +56% | 2023 |
| 26, Glanbran Road476 m away | 73 m² | 117 m² | +44 m² +60% | 2025 |
| 76, Cae Morfa842 m away | 126 m² | 168 m² | +42 m² +33% | 2013 |
| 41, Heol Brithdir305 m away | 90 m² | 131 m² | +41 m² +46% | 2025 |
| 18, Cwrt Olwyn Ddwr749 m away | 93 m² | 133 m² | +40 m² +43% | 2023 |
| 10, Heol Camlan898 m away | 77 m² | 116 m² | +39 m² +51% | 2013 |
| 278, Peniel Green Road708 m away | 90 m² | 125 m² | +35 m² +39% | 2016 |
| 110, Crymlyn Parc843 m away | 39 m² | 73 m² | +34 m² +87% | 2020 |
| 108, Crymlyn Parc843 m away | 39 m² | 72 m² | +33 m² +85% | 2021 |
| 4, Lonlas Avenue866 m away | 107 m² | 138 m² | +31 m² +29% | 2025 |
| 34, Birchgrove Road0 m away | 197 m² | 228 m² | +31 m² +16% | 2012 |
| 58, Park Drive712 m away | 63 m² | 93 m² | +30 m² +48% | 2013 |
| 52, Glanbran Road476 m away | 78 m² | 106 m² | +28 m² +36% | 2022 |
| 12, Heol Brithdir305 m away | 100 m² | 127 m² | +27 m² +27% | 2024 |
| 75, Bethel Road993 m away | 120 m² | 146 m² | +26 m² +22% | 2025 |
| 40, Crymlyn Gardens784 m away | 159 m² | 185 m² | +26 m² +16% | 2010 |
| 4, Frederick Place783 m away | 90 m² | 115 m² | +25 m² +28% | 2025 |
| 8, Heol Ysgyfarnog441 m away | 89 m² | 114 m² | +25 m² +28% | 2024 |
| 253, Peniel Green Road792 m away | 90 m² | 113 m² | +23 m² +26% | 2021 |
| 33, Heol Rhuddos479 m away | 92 m² | 115 m² | +23 m² +25% | 2015 |
| 5, Cwrt Olwyn Ddwr749 m away | 78 m² | 100 m² | +22 m² +28% | 2018 |
| 125, Crymlyn Parc718 m away | 79 m² | 101 m² | +22 m² +28% | 2013 |
| 14, Crymlyn Parc843 m away | 113 m² | 132 m² | +19 m² +17% | 2021 |
| 15, Heol Hafdy944 m away | 83 m² | 101 m² | +18 m² +22% | 2023 |
| 54, Cae Morfa842 m away | 99 m² | 114 m² | +15 m² +15% | 2026 |
| 9, Crymlyn Gardens784 m away | 100 m² | 115 m² | +15 m² +15% | 2025 |
| 8, Cae Morfa842 m away | 99 m² | 114 m² | +15 m² +15% | 2023 |
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.