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 RH11 9BU
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 |
|---|---|---|---|---|
| 25, Horsham Road121 m away | 88 m² | 150 m² | +62 m² +70% | 2012 |
| 3, Horsham Road121 m away | 109 m² | 170 m² | +61 m² +56% | 2025 |
| 8, Barn Close191 m away | 80 m² | 138 m² | +58 m² +73% | 2025 |
| 14, Horsham Road136 m away | 70 m² | 122 m² | +52 m² +74% | 2024 |
| 4, Cotsford106 m away | 149 m² | 187 m² | +38 m² +26% | 2025 |
| 3, Grapes Cottages, Old Brighton Road South104 m away | 83 m² | 106 m² | +23 m² +28% | 2016 |
| 11, Cotsford106 m away | 94 m² | 114 m² | +20 m² +21% | 2024 |
| 9, The Hemsleys91 m away | 102 m² | 121 m² | +19 m² +19% | 2020 |
| 13, Wye Close809 m away | 69 m² | 87 m² | +18 m² +26% | 2025 |
| 29, Ranmore Close950 m away | 70 m² | 88 m² | +18 m² +26% | 2023 |
| 11, Tilgate Forest Row663 m away | 55 m² | 72 m² | +17 m² +31% | 2020 |
| 16, Horsham Road136 m away | 67 m² | 83 m² | +16 m² +24% | 2020 |
| 54, Ranmore Close950 m away | 70 m² | 85 m² | +15 m² +21% | 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.