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 DL15 8EW
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 |
|---|---|---|---|---|
| The Smelt House, Fir Tree Grange997 m away | 462 m² | 670 m² | +208 m² +45% | 2015 |
| 7, Edendale Crescent825 m away | 63 m² | 112 m² | +49 m² +78% | 2018 |
| 10, Howden Green475 m away | 128 m² | 157 m² | +29 m² +23% | 2013 |
| 11, Howden Green475 m away | 128 m² | 157 m² | +29 m² +23% | 2013 |
| 6, Howden Green475 m away | 93 m² | 121 m² | +28 m² +30% | 2023 |
| 22, Hargill Road720 m away | 68 m² | 90 m² | +22 m² +32% | 2020 |
| 2, Bridge Street452 m away | 66 m² | 85 m² | +19 m² +29% | 2025 |
| 7, Valley Terrace0 m away | 65 m² | 82 m² | +17 m² +26% | 2023 |
| The Mews, 6, Station Houses390 m away | 92 m² | 108 m² | +16 m² +17% | 2019 |
| 11, Holly Terrace554 m away | 76 m² | 91 m² | +15 m² +20% | 2011 |
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.