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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 5AG
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 |
|---|---|---|---|---|
| Trem-Y-Garth, Poplar Road519 m away | 106 m² | 228 m² | +122 m² +115% | 2015 |
| 12, Poplar Road701 m away | 74 m² | 141 m² | +67 m² +91% | 2023 |
| 94, Alexon Way422 m away | 77 m² | 132 m² | +55 m² +71% | 2025 |
| 14, Hawthorn Road204 m away | 73 m² | 128 m² | +55 m² +75% | 2023 |
| 21, Tonteg Close912 m away | 102 m² | 151 m² | +49 m² +48% | 2016 |
| Edge Hill, Tavern Y Coed738 m away | 214 m² | 251 m² | +37 m² +17% | 2021 |
| 15, Francis Street701 m away | 58 m² | 84 m² | +26 m² +45% | 2016 |
| 64, Ynyslyn Road90 m away | 81 m² | 105 m² | +24 m² +30% | 2024 |
| 16, Hawthorn Crescent284 m away | 72 m² | 96 m² | +24 m² +33% | 2015 |
| 24, De Barri Street795 m away | 84 m² | 106 m² | +22 m² +26% | 2025 |
| 4, Nant Y Dall Avenue728 m away | 92 m² | 112 m² | +20 m² +22% | 2015 |
| 44, Oak Street985 m away | 81 m² | 101 m² | +20 m² +25% | 2014 |
| 4, Poplar Road701 m away | 91 m² | 110 m² | +19 m² +21% | 2019 |
| 29, Oak Street985 m away | 59 m² | 78 m² | +19 m² +32% | 2013 |
| 8, Ruthin Way864 m away | 80 m² | 98 m² | +18 m² +23% | 2013 |
| 14, Alexon Way422 m away | 109 m² | 126 m² | +17 m² +16% | 2026 |
| 73, Dynea Road728 m away | 59 m² | 76 m² | +17 m² +29% | 2024 |
| 18, Tonteg Close912 m away | 88 m² | 105 m² | +17 m² +19% | 2021 |
| 8, Fairfield Close314 m away | 94 m² | 111 m² | +17 m² +18% | 2014 |
| 16, Owen Street809 m away | 83 m² | 99 m² | +16 m² +19% | 2026 |
| 3, Lime Street969 m away | 69 m² | 85 m² | +16 m² +23% | 2024 |
| 58, Hawthorn Crescent229 m away | 91 m² | 107 m² | +16 m² +18% | 2022 |
| Tonteg Cottage, Main Road939 m away | 67 m² | 82 m² | +15 m² +22% | 2025 |
| 18, Laurel Avenue194 m away | 87 m² | 102 m² | +15 m² +17% | 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.