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 GU9 0AW
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 |
|---|---|---|---|---|
| 17, Upper Old Park Lane528 m away | 256 m² | 505 m² | +249 m² +97% | 2017 |
| 5, Old Park Lane815 m away | 215 m² | 396 m² | +181 m² +84% | 2016 |
| Woodstock, Old Park Lane927 m away | 170 m² | 349 m² | +179 m² +105% | 2019 |
| 14, Old Park Lane815 m away | 123 m² | 272 m² | +149 m² +121% | 2026 |
| 6, Hoghatch Lane819 m away | 103 m² | 232 m² | +129 m² +125% | 2015 |
| The Paddock, Folly Hill640 m away | 90 m² | 191 m² | +101 m² +112% | 2016 |
| 1, Spring Lane West948 m away | 90 m² | 181 m² | +91 m² +101% | 2021 |
| Fylingdales, 3, Upper Old Park Lane460 m away | 113 m² | 190 m² | +77 m² +68% | 2019 |
| Ringside, Hoghatch Lane819 m away | 126 m² | 182 m² | +56 m² +44% | 2026 |
| 7, Three Stiles Road999 m away | 94 m² | 145 m² | +51 m² +54% | 2024 |
| Orchard House, Old Park Lane815 m away | 107 m² | 148 m² | +41 m² +38% | 2021 |
| 4, Blenheim Crescent671 m away | 108 m² | 147 m² | +39 m² +36% | 2026 |
| 3, Hampton Road692 m away | 102 m² | 137 m² | +35 m² +34% | 2021 |
| 32, Upper Old Park Lane528 m away | 120 m² | 154 m² | +34 m² +28% | 2012 |
| Little Acorns, 6, Folly Lane South687 m away | 133 m² | 165 m² | +32 m² +24% | 2025 |
| 8, Hampton Road809 m away | 99 m² | 128 m² | +29 m² +29% | 2016 |
| 4, Balmoral Crescent879 m away | 139 m² | 164 m² | +25 m² +18% | 2022 |
| 26, Hampton Road928 m away | 94 m² | 114 m² | +20 m² +21% | 2018 |
| 55, Old Park Close750 m away | 93 m² | 108 m² | +15 m² +16% | 2024 |
| 3, Brickfield Cottages, Middle Old Park0 m away | 72 m² | 87 m² | +15 m² +21% | 2019 |
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.