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 DH9 7JN
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 |
|---|---|---|---|---|
| 11, Mary Street769 m away | 74 m² | 139 m² | +65 m² +88% | 2022 |
| 35, Durham Road834 m away | 109 m² | 172 m² | +63 m² +58% | 2016 |
| 29, Eden Terrace983 m away | 146 m² | 204 m² | +58 m² +40% | 2015 |
| 3, Derwent Drive747 m away | 163 m² | 217 m² | +54 m² +33% | 2025 |
| 49, John Street985 m away | 62 m² | 103 m² | +41 m² +66% | 2017 |
| 5, Gray Terrace256 m away | 69 m² | 107 m² | +38 m² +55% | 2014 |
| 19, Unity Terrace69 m away | 65 m² | 100 m² | +35 m² +54% | 2024 |
| 1, Elizabeth Street798 m away | 49 m² | 83 m² | +34 m² +69% | 2026 |
| 4, South View697 m away | 89 m² | 118 m² | +29 m² +33% | 2024 |
| 13, William Street758 m away | 90 m² | 118 m² | +28 m² +31% | 2017 |
| 17, Frosterley Gardens958 m away | 57 m² | 81 m² | +24 m² +42% | 2013 |
| 15, Croft Terrace499 m away | 94 m² | 117 m² | +23 m² +24% | 2026 |
| 16, Stanleyburn View192 m away | 41 m² | 63 m² | +22 m² +54% | 2025 |
| 13, Croft Terrace499 m away | 103 m² | 124 m² | +21 m² +20% | 2026 |
| 21, Catherine Terrace281 m away | 23 m² | 44 m² | +21 m² +91% | 2025 |
| 31, Mitchell Street858 m away | 97 m² | 117 m² | +20 m² +21% | 2024 |
| 22, Frosterley Gardens958 m away | 65 m² | 84 m² | +19 m² +29% | 2017 |
| 8, Edward Terrace47 m away | 70 m² | 88 m² | +18 m² +26% | 2017 |
| 9, Tynedale Terrace580 m away | 87 m² | 105 m² | +18 m² +21% | 2016 |
| 46, Stanleyburn View192 m away | 46 m² | 64 m² | +18 m² +39% | 2015 |
| 12, Leeholme Court805 m away | 57 m² | 75 m² | +18 m² +32% | 2014 |
| 58, Poplar Street913 m away | 60 m² | 78 m² | +18 m² +30% | 2014 |
| 9, Sycamore Terrace274 m away | 69 m² | 86 m² | +17 m² +25% | 2025 |
| 66, Poplar Street913 m away | 76 m² | 93 m² | +17 m² +22% | 2024 |
| 4, Windsor Terrace0 m away | 71 m² | 88 m² | +17 m² +24% | 2017 |
| 3, Leeholme Court805 m away | 68 m² | 85 m² | +17 m² +25% | 2014 |
| 21, Durham Road834 m away | 111 m² | 128 m² | +17 m² +15% | 2013 |
| 20, Windermere Terrace830 m away | 76 m² | 92 m² | +16 m² +21% | 2026 |
| 10, Mitchell Street864 m away | 96 m² | 112 m² | +16 m² +17% | 2021 |
| 6, Leeholme Court805 m away | 65 m² | 80 m² | +15 m² +23% | 2024 |
| 27, Windsor Terrace0 m away | 64 m² | 79 m² | +15 m² +23% | 2022 |
| 16, Wolsingham Terrace992 m away | 65 m² | 80 m² | +15 m² +23% | 2015 |
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.