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 GU21 4XS
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 |
|---|---|---|---|---|
| Coppelia, Horsell Birch845 m away | 96 m² | 198 m² | +102 m² +106% | 2022 |
| Coxhill Farm, Deep Pool Lane818 m away | 160 m² | 251 m² | +91 m² +57% | 2012 |
| 53, Roundthorn Way843 m away | 86 m² | 161 m² | +75 m² +87% | 2025 |
| 32, Russell Road961 m away | 78 m² | 143 m² | +65 m² +83% | 2020 |
| Wentworth Lodge, Carthouse Lane0 m away | 150 m² | 212 m² | +62 m² +41% | 2020 |
| 5, Darvel Close587 m away | 92 m² | 149 m² | +57 m² +62% | 2023 |
| 12, Weasdale Court738 m away | 61 m² | 116 m² | +55 m² +90% | 2025 |
| 25, Roundthorn Way843 m away | 58 m² | 112 m² | +54 m² +93% | 2017 |
| Happy Garden, Littlewick Road462 m away | 122 m² | 171 m² | +49 m² +40% | 2020 |
| 3, Littlemead927 m away | 86 m² | 123 m² | +37 m² +43% | 2022 |
| 53, Russell Road998 m away | 90 m² | 127 m² | +37 m² +41% | 2021 |
| 1, Darvel Close587 m away | 81 m² | 113 m² | +32 m² +40% | 2021 |
| 37, The Fieldings818 m away | 45 m² | 70 m² | +25 m² +56% | 2011 |
| 56, Russell Road998 m away | 75 m² | 97 m² | +22 m² +29% | 2016 |
| 33, Roundthorn Way843 m away | 71 m² | 92 m² | +21 m² +30% | 2014 |
| 38, Russell Road961 m away | 76 m² | 96 m² | +20 m² +26% | 2020 |
| 63, Roundthorn Way843 m away | 81 m² | 100 m² | +19 m² +23% | 2025 |
| 19, Willowmead Close990 m away | 87 m² | 106 m² | +19 m² +22% | 2013 |
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.