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 CF5 4JP
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 |
|---|---|---|---|---|
| 36, Whinberry Way425 m away | 68 m² | 130 m² | +62 m² +91% | 2014 |
| 69, Stanway Road137 m away | 67 m² | 126 m² | +59 m² +88% | 2013 |
| 44, Marguerites Way431 m away | 82 m² | 131 m² | +49 m² +60% | 2013 |
| 70, Archer Road463 m away | 43 m² | 88 m² | +45 m² +105% | 2023 |
| 19, Meyrick Road843 m away | 56 m² | 99 m² | +43 m² +77% | 2022 |
| 18, Redhouse Crescent753 m away | 82 m² | 125 m² | +43 m² +52% | 2014 |
| 7, Wenvoe Court, Ogmore Road921 m away | 42 m² | 84 m² | +42 m² +100% | 2020 |
| 29, Marcross Road907 m away | 57 m² | 93 m² | +36 m² +63% | 2016 |
| 15, Aberthaw Road720 m away |
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.
| 85 m² |
| 116 m² |
| +31 m² +36% |
| 2014 |
| 24, Highbury Road479 m away | 78 m² | 108 m² | +30 m² +38% | 2024 |
|---|
| 480, Cowbridge Road West829 m away | 70 m² | 100 m² | +30 m² +43% | 2023 |
|---|
| 7, Courtis Road129 m away | 55 m² | 83 m² | +28 m² +51% | 2025 |
|---|
| 8, Charteris Crescent860 m away | 94 m² | 122 m² | +28 m² +30% | 2024 |
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| 510, Cowbridge Road West829 m away | 57 m² | 84 m² | +27 m² +47% | 2026 |
|---|
| 98, Caerau Court798 m away | 23 m² | 50 m² | +27 m² +117% | 2020 |
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| 36, Pethybridge Road426 m away | 59 m² | 86 m² | +27 m² +46% | 2015 |
|---|
| 1, Illtyd Road277 m away | 93 m² | 120 m² | +27 m² +29% | 2013 |
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| 60, Narberth Road942 m away | 108 m² | 134 m² | +26 m² +24% | 2024 |
|---|
| 68, Highbury Road423 m away | 94 m² | 120 m² | +26 m² +28% | 2016 |
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| 424, Cowbridge Road West694 m away | 73 m² | 99 m² | +26 m² +36% | 2009 |
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| 1, Stanway Road349 m away | 85 m² | 110 m² | +25 m² +29% | 2022 |
|---|
| 43, Marguerites Way431 m away | 116 m² | 140 m² | +24 m² +21% | 2019 |
|---|
| 2, Caerau Park Place751 m away | 108 m² | 132 m² | +24 m² +22% | 2015 |
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| 354, Cowbridge Road West686 m away | 69 m² | 92 m² | +23 m² +33% | 2026 |
|---|
| 8, Vachell Road880 m away | 67 m² | 90 m² | +23 m² +34% | 2026 |
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| 79, Caerau Lane843 m away | 103 m² | 126 m² | +23 m² +22% | 2022 |
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| 251b, Cowbridge Road West729 m away | 76 m² | 97 m² | +21 m² +28% | 2025 |
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| 41, Elford Road301 m away | 68 m² | 89 m² | +21 m² +31% | 2024 |
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| 22, Crosswells Way441 m away | 80 m² | 101 m² | +21 m² +26% | 2016 |
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| 47, Cyntwell Crescent897 m away | 102 m² | 123 m² | +21 m² +21% | 2013 |
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| 10, Cyntwell Place952 m away | 77 m² | 97 m² | +20 m² +26% | 2024 |
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| 23, Redhouse Crescent753 m away | 74 m² | 94 m² | +20 m² +27% | 2016 |
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| 11, Penmark Road888 m away | 89 m² | 109 m² | +20 m² +22% | 2016 |
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| 2, Sevenoaks Road346 m away | 80 m² | 99 m² | +19 m² +24% | 2023 |
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| 263, Grand Avenue462 m away | 47 m² | 66 m² | +19 m² +40% | 2021 |
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| 386, Grand Avenue859 m away | 51 m² | 70 m² | +19 m² +37% | 2021 |
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| 7, Macdonald Road710 m away | 87 m² | 106 m² | +19 m² +22% | 2015 |
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| 3, Cardiff Road987 m away | 49 m² | 68 m² | +19 m² +39% | 2014 |
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| 25, Lon Werdd692 m away | 97 m² | 114 m² | +17 m² +18% | 2024 |
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| 10, Vervain Close346 m away | 59 m² | 76 m² | +17 m² +29% | 2023 |
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| 25, Addison Crescent645 m away | 58 m² | 74 m² | +16 m² +28% | 2026 |
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| 157, Grand Avenue441 m away | 66 m² | 82 m² | +16 m² +24% | 2022 |
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| 1, Pendoylan Court, Llandovery Close962 m away | 82 m² | 98 m² | +16 m² +20% | 2021 |
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| 68, Highmead Road862 m away | 105 m² | 121 m² | +16 m² +15% | 2016 |
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| 32, Ramsons Way681 m away | 97 m² | 113 m² | +16 m² +16% | 2015 |
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| 86, Narberth Road942 m away | 86 m² | 102 m² | +16 m² +19% | 2015 |
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| 118, Grand Avenue526 m away | 87 m² | 103 m² | +16 m² +18% | 2014 |
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| 54, Marguerites Way431 m away | 89 m² | 104 m² | +15 m² +17% | 2025 |
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| 33, Sevenoaks Road346 m away | 59 m² | 74 m² | +15 m² +25% | 2024 |
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| 7, St Brides Court, Pyle Road977 m away | 71 m² | 86 m² | +15 m² +21% | 2018 |
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| 157, Cowbridge Road West941 m away | 77 m² | 92 m² | +15 m² +19% | 2015 |
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| 12, Michaelston Court, Pyle Road977 m away | 50 m² | 65 m² | +15 m² +30% | 2011 |
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