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 CF83 3FU
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 |
|---|---|---|---|---|
| 53, Mill Road701 m away | 85 m² | 180 m² | +95 m² +112% | 2014 |
| 4, Heol Fach683 m away | 83 m² | 168 m² | +85 m² +102% | 2023 |
| 5, Heol Ganol668 m away | 87 m² | 140 m² | +53 m² +61% | 2025 |
| 12, Ton Y Felin Road905 m away | 72 m² | 119 m² | +47 m² +65% | 2016 |
| 5, Energlyn Crescent504 m away | 87 m² | 129 m² | +42 m² +48% | 2016 |
| 3, Heol Y Ddol696 m away | 52 m² | 94 m² | +42 m² +81% | 2014 |
| 47, Half Acre Court743 m away | 74 m² | 115 m² | +41 m² +55% | 2020 |
| 68, St Cenydd Road927 m away | 58 m² | 98 m² | +40 m² +69% | 2010 |
| 70, Mill Road458 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.
| 106 m² |
| +37 m² +54% |
| 2022 |
| 20, Heol Y Nant488 m away | 82 m² | 117 m² | +35 m² +43% | 2017 |
|---|
| 3, Bro Ger-Y-Nant912 m away | 79 m² | 114 m² | +35 m² +44% | 2015 |
|---|
| 120, Heol Y Ddol659 m away | 54 m² | 88 m² | +34 m² +63% | 2024 |
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| 9, Rhos Street382 m away | 57 m² | 91 m² | +34 m² +60% | 2021 |
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| 176, Pontygwindy Road465 m away | 88 m² | 121 m² | +33 m² +38% | 2024 |
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| 124, Heol Y Ddol659 m away | 71 m² | 103 m² | +32 m² +45% | 2024 |
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| 10, Gelli Dawel263 m away | 65 m² | 96 m² | +31 m² +48% | 2023 |
|---|
| 1, Llwyn On Close231 m away | 107 m² | 138 m² | +31 m² +29% | 2019 |
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| 84, Brynglas815 m away | 59 m² | 88 m² | +29 m² +49% | 2020 |
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| 55, Waun Draw900 m away | 79 m² | 107 m² | +28 m² +35% | 2026 |
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| 26, Mill View195 m away | 77 m² | 105 m² | +28 m² +36% | 2025 |
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| 4, First Avenue840 m away | 108 m² | 136 m² | +28 m² +26% | 2025 |
|---|
| 9, Brynglas941 m away | 77 m² | 105 m² | +28 m² +36% | 2025 |
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| 20, Mill View195 m away | 120 m² | 147 m² | +27 m² +23% | 2025 |
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| 33, Heol Trecastell982 m away | 76 m² | 103 m² | +27 m² +36% | 2025 |
|---|
| 7, Caenant Road295 m away | 84 m² | 111 m² | +27 m² +32% | 2014 |
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| 5, Llewellyn Drive0 m away | 76 m² | 103 m² | +27 m² +36% | 2013 |
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| 9, Bowls Terrace962 m away | 86 m² | 110 m² | +24 m² +28% | 2026 |
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| 5, Virginia View653 m away | 83 m² | 107 m² | +24 m² +29% | 2024 |
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| 37, Waun Draw900 m away | 121 m² | 145 m² | +24 m² +20% | 2024 |
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| 22, Y Felin Ffrwd571 m away | 56 m² | 80 m² | +24 m² +43% | 2015 |
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| 5, Gellir Felin417 m away | 130 m² | 154 m² | +24 m² +18% | 2014 |
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| 30, Waun Draw900 m away | 98 m² | 121 m² | +23 m² +23% | 2026 |
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| 3, Heol Fach683 m away | 76 m² | 99 m² | +23 m² +30% | 2025 |
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| 25, Heol Y Ddol696 m away | 78 m² | 101 m² | +23 m² +29% | 2024 |
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| 264, Pontygwindy Road755 m away | 87 m² | 110 m² | +23 m² +26% | 2015 |
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| 45, Half Acre Court743 m away | 107 m² | 129 m² | +22 m² +21% | 2021 |
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| 7, Gellir Felin417 m away | 110 m² | 132 m² | +22 m² +20% | 2014 |
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| 134, Nantgarw Road697 m away | 67 m² | 88 m² | +21 m² +31% | 2022 |
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| 13, Y Felin Ffrwd571 m away | 59 m² | 80 m² | +21 m² +36% | 2016 |
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| 6, Y Felin Ffrwd571 m away | 60 m² | 81 m² | +21 m² +35% | 2015 |
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| 39, Heol Y Felin645 m away | 107 m² | 128 m² | +21 m² +20% | 2013 |
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| 40, Nantgarw Road611 m away | 75 m² | 95 m² | +20 m² +27% | 2025 |
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| Inisfail, Court Road675 m away | 77 m² | 97 m² | +20 m² +26% | 2018 |
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| 25, Y Felin Ffrwd571 m away | 60 m² | 80 m² | +20 m² +33% | 2016 |
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| 120, Pontygwindy Road574 m away | 76 m² | 95 m² | +19 m² +25% | 2023 |
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| 1, Maes Hir646 m away | 81 m² | 100 m² | +19 m² +23% | 2013 |
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| 39, Brynglas852 m away | 77 m² | 95 m² | +18 m² +23% | 2025 |
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| 21, Ael Y Bryn519 m away | 82 m² | 100 m² | +18 m² +22% | 2021 |
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| 8, Llewellyn Drive0 m away | 86 m² | 104 m² | +18 m² +21% | 2016 |
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| 12, Pantycelyn Drive540 m away | 69 m² | 87 m² | +18 m² +26% | 2015 |
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| 9, Court Road338 m away | 85 m² | 103 m² | +18 m² +21% | 2013 |
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| 18, Llwybr Y Coetir810 m away | 73 m² | 90 m² | +17 m² +23% | 2026 |
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| 2, Ceiriog Drive55 m away | 102 m² | 119 m² | +17 m² +17% | 2025 |
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| 3, Y Cilffordd467 m away | 71 m² | 88 m² | +17 m² +24% | 2021 |
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| 7, Heol Y Ddol696 m away | 89 m² | 106 m² | +17 m² +19% | 2016 |
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| 2, Cae Pandy869 m away | 94 m² | 111 m² | +17 m² +18% | 2014 |
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| 4, Heol Y Nant488 m away | 83 m² | 99 m² | +16 m² +19% | 2025 |
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| 159, Nantgarw Road823 m away | 62 m² | 78 m² | +16 m² +26% | 2025 |
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| 13, Waunfach Street376 m away | 82 m² | 98 m² | +16 m² +20% | 2021 |
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| 8, Heol Erw Y Rhos988 m away | 59 m² | 74 m² | +15 m² +25% | 2024 |
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| 104, Heol Y Ddol659 m away | 48 m² | 63 m² | +15 m² +31% | 2023 |
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| 20, Llys Nant Pandy385 m away | 94 m² | 109 m² | +15 m² +16% | 2017 |
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| 6, Waun Erw937 m away | 63 m² | 78 m² | +15 m² +24% | 2014 |
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| 12, Rhiw Fach974 m away | 87 m² | 102 m² | +15 m² +17% | 2013 |
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