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 CF37 1EN
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 |
|---|---|---|---|---|
| 59, Graigwen Road908 m away | 92 m² | 178 m² | +86 m² +93% | 2015 |
| 47, Pantygraigwen Road819 m away | 79 m² | 158 m² | +79 m² +100% | 2015 |
| 2, Tyfica Road743 m away | 216 m² | 290 m² | +74 m² +34% | 2026 |
| 35, Graigwen Road778 m away | 89 m² | 162 m² | +73 m² +82% | 2015 |
| 6, Landraw Road434 m away | 47 m² | 112 m² | +65 m² +138% | 2011 |
| Ty Bryngolwg, Hurford Street146 m away | 168 m² | 231 m² | +63 m² +38% | 2024 |
| 47, Woodland Terrace345 m away | 122 m² | 185 m² | +63 m² +52% | 2023 |
| 8, Courthouse Street734 m away | 193 m² | 254 m² | +61 m² +32% | 2012 |
| 7, Barry Road376 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.
| 90 m² |
| 146 m² |
| +56 m² +62% |
| 2014 |
| Hillcrest, Llantrisant Road889 m away | 62 m² | 113 m² | +51 m² +82% | 2016 |
|---|
| 55, Coed Isaf Road0 m away | 56 m² | 103 m² | +47 m² +84% | 2023 |
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| 4, Hillside View887 m away | 70 m² | 108 m² | +38 m² +54% | 2021 |
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| 15, Whiterock Drive950 m away | 81 m² | 119 m² | +38 m² +47% | 2014 |
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| 58, Coed Isaf Road0 m away | 82 m² | 119 m² | +37 m² +45% | 2023 |
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| 10, Margaret Street856 m away | 78 m² | 115 m² | +37 m² +47% | 2016 |
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| 8, Highfield Terrace780 m away | 127 m² | 163 m² | +36 m² +28% | 2016 |
|---|
| 31, Mound Road323 m away | 85 m² | 120 m² | +35 m² +41% | 2016 |
|---|
| 1, Landraw Road434 m away | 45 m² | 80 m² | +35 m² +78% | 2015 |
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| 39, Sheppard Street462 m away | 81 m² | 114 m² | +33 m² +41% | 2021 |
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| Lyndale, Danylan Road232 m away | 64 m² | 97 m² | +33 m² +52% | 2018 |
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| 10, Llewelyn Street632 m away | 94 m² | 125 m² | +31 m² +33% | 2014 |
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| 9a, High Street871 m away | 54 m² | 84 m² | +30 m² +56% | 2021 |
|---|
| 16, Graig Street831 m away | 51 m² | 80 m² | +29 m² +57% | 2018 |
|---|
| 8, Graig Avenue805 m away | 114 m² | 143 m² | +29 m² +25% | 2015 |
|---|
| 13, Aelybryn824 m away | 80 m² | 108 m² | +28 m² +35% | 2026 |
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| 2, Bethel Street400 m away | 100 m² | 128 m² | +28 m² +28% | 2025 |
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| Oaklands, Llantrisant Road758 m away | 104 m² | 132 m² | +28 m² +27% | 2020 |
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| 30, Hopkinstown Road832 m away | 60 m² | 87 m² | +27 m² +45% | 2026 |
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| 46, Rosser Street338 m away | 80 m² | 107 m² | +27 m² +34% | 2025 |
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| 42, Pantygraigwen Road819 m away | 154 m² | 181 m² | +27 m² +18% | 2025 |
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| 41, Park Prospect921 m away | 91 m² | 117 m² | +26 m² +29% | 2024 |
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| 32, Woodland Terrace420 m away | 90 m² | 116 m² | +26 m² +29% | 2023 |
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| 19, Lee Street506 m away | 105 m² | 131 m² | +26 m² +25% | 2015 |
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| 14, Pantygraigwen Road755 m away | 102 m² | 128 m² | +26 m² +25% | 2013 |
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| 9, Kirkhouse Street658 m away | 75 m² | 100 m² | +25 m² +33% | 2018 |
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| 127, Hopkinstown Road523 m away | 79 m² | 104 m² | +25 m² +32% | 2009 |
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| 27, Plymouth Road591 m away | 55 m² | 79 m² | +24 m² +44% | 2019 |
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| 19, Graig Terrace976 m away | 38 m² | 61 m² | +23 m² +61% | 2024 |
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| 30, Hurford Street146 m away | 82 m² | 105 m² | +23 m² +28% | 2022 |
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| 3, Whiterock Drive950 m away | 51 m² | 74 m² | +23 m² +45% | 2022 |
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| 19, Henry Street674 m away | 64 m² | 87 m² | +23 m² +36% | 2020 |
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| 59b, Pantygraigwen Road819 m away | 82 m² | 104 m² | +22 m² +27% | 2026 |
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| 14, Hillside View887 m away | 67 m² | 89 m² | +22 m² +33% | 2012 |
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| 2, Foundry Road561 m away | 96 m² | 117 m² | +21 m² +22% | 2025 |
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| 26, Plymouth Road591 m away | 87 m² | 108 m² | +21 m² +24% | 2016 |
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| 28, High Street798 m away | 75 m² | 95 m² | +20 m² +27% | 2022 |
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| 50, Vaughan Street503 m away | 99 m² | 119 m² | +20 m² +20% | 2018 |
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| 30, Pwllgwaun Road484 m away | 83 m² | 101 m² | +18 m² +22% | 2016 |
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| 38, Coed Isaf Road81 m away | 79 m² | 96 m² | +17 m² +22% | 2025 |
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| 15, Telekebir Road713 m away | 96 m² | 113 m² | +17 m² +18% | 2022 |
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| 20, Oliver Street581 m away | 61 m² | 78 m² | +17 m² +28% | 2020 |
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| 21, Grover Street653 m away | 80 m² | 97 m² | +17 m² +21% | 2019 |
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| 39, Leyshon Street695 m away | 93 m² | 110 m² | +17 m² +18% | 2016 |
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| 14, Grover Street653 m away | 71 m² | 87 m² | +16 m² +23% | 2026 |
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| 28, Hillside View887 m away | 73 m² | 89 m² | +16 m² +22% | 2024 |
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| 1, Hurford Crescent641 m away | 67 m² | 83 m² | +16 m² +24% | 2016 |
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| 46, Hopkinstown Road601 m away | 70 m² | 86 m² | +16 m² +23% | 2014 |
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| Twilight Cottage, Danylan Road232 m away | 79 m² | 94 m² | +15 m² +19% | 2024 |
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| 6, Albert Road681 m away | 60 m² | 75 m² | +15 m² +25% | 2022 |
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| 23, Park Prospect921 m away | 83 m² | 98 m² | +15 m² +18% | 2021 |
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| 50, Hopkinstown Road601 m away | 82 m² | 97 m² | +15 m² +18% | 2019 |
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| 62, Pantygraigwen Road819 m away | 98 m² | 113 m² | +15 m² +15% | 2018 |
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| 5, Rose Cottages, Sheppard Street462 m away | 81 m² | 96 m² | +15 m² +19% | 2016 |
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| 95, Taff Street908 m away | 40 m² | 55 m² | +15 m² +38% | 2015 |
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