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 HP12 4AL
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 |
|---|---|---|---|---|
| Byeways, Park Farm Road521 m away | 128 m² | 233 m² | +105 m² +82% | 2017 |
| 78, Pheasant Drive894 m away | 108 m² | 167 m² | +59 m² +55% | 2014 |
| Hillside, Cookshall Lane0 m away | 102 m² | 157 m² | +55 m² +54% | 2011 |
| 335a, West Wycombe Road864 m away | 84 m² | 135 m² | +51 m² +61% | 2012 |
| 19, Green Leys933 m away | 83 m² | 129 m² | +46 m² +55% | 2026 |
| 7, Curlew Close854 m away | 107 m² | 146 m² | +39 m² +36% | 2022 |
| 37, Portway Drive258 m away | 51 m² | 81 m² | +30 m² +59% | 2022 |
| Downley Cottage, Cookshall Lane0 m away | 76 m² | 105 m² | +29 m² +38% | 2026 |
| 2, Curlew Close854 m away | 102 m² | 125 m² | +23 m² +23% | 2016 |
| 8, Curlew Close854 m away | 111 m² | 134 m² | +23 m² +21% | 2014 |
| 21, Gosling Grove975 m away | 63 m² | 83 m² | +20 m² +32% | 2015 |
| 12, Beechwood Road67 m away | 76 m² | 91 m² | +15 m² +20% | 2016 |
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.