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 RG40 1TF
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 |
|---|---|---|---|---|
| 21, Seaward Drive804 m away | 163 m² | 319 m² | +156 m² +96% | 2026 |
| 77, London Road790 m away | 144 m² | 285 m² | +141 m² +98% | 2022 |
| 31, Wiltshire Road294 m away | 223 m² | 316 m² | +93 m² +42% | 2026 |
| 34, Seaford Road902 m away | 88 m² | 169 m² | +81 m² +92% | 2014 |
| 4a, Ashridge Road286 m away | 81 m² | 157 m² | +76 m² +94% | 2022 |
| 32, Rose Street841 m away | 61 m² | 136 m² | +75 m² +123% | 2013 |
| 3, Cantley Farm Cottages, Cantley776 m away | 78 m² | 148 m² | +70 m² +90% | 2023 |
| 28, Rose Street841 m away | 87 m² | 155 m² | +68 m² +78% | 2019 |
| 3, Whaley Road476 m away |
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.
| 69 m² |
| 136 m² |
| +67 m² +97% |
| 2019 |
| 75, London Road790 m away | 107 m² | 171 m² | +64 m² +60% | 2017 |
|---|
| 13, Osborne Road721 m away | 104 m² | 167 m² | +63 m² +61% | 2021 |
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| 38, Milton Gardens888 m away | 85 m² | 147 m² | +62 m² +73% | 2022 |
|---|
| 16, Victoria Walk947 m away | 57 m² | 118 m² | +61 m² +107% | 2013 |
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| 16, Tithe Court, Glebelands Road649 m away | 70 m² | 129 m² | +59 m² +84% | 2015 |
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| 24, Eldridge Avenue617 m away | 104 m² | 162 m² | +58 m² +56% | 2022 |
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| 71, London Road790 m away | 128 m² | 181 m² | +53 m² +41% | 2026 |
|---|
| 4, Barkhart Close526 m away | 48 m² | 101 m² | +53 m² +110% | 2024 |
|---|
| 24, Pigott Road535 m away | 85 m² | 136 m² | +51 m² +60% | 2019 |
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| 25, The Terrace969 m away | 246 m² | 295 m² | +49 m² +20% | 2023 |
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| 7, Ashridge Road341 m away | 79 m² | 124 m² | +45 m² +57% | 2016 |
|---|
| 10, Macphail Close777 m away | 60 m² | 104 m² | +44 m² +73% | 2021 |
|---|
| 8, Buckthorn Close726 m away | 138 m² | 182 m² | +44 m² +32% | 2015 |
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| 22, Crutchley Road125 m away | 99 m² | 142 m² | +43 m² +43% | 2026 |
|---|
| 30, Trefoil Close860 m away | 63 m² | 106 m² | +43 m² +68% | 2025 |
|---|
| 35, Rectory Road698 m away | 197 m² | 238 m² | +41 m² +21% | 2020 |
|---|
| 49, London Road790 m away | 95 m² | 135 m² | +40 m² +42% | 2025 |
|---|
| 36, Trefoil Close860 m away | 109 m² | 149 m² | +40 m² +37% | 2015 |
|---|
| 2, Osborne Road721 m away | 99 m² | 138 m² | +39 m² +39% | 2015 |
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| 4, All Saints Close282 m away | 59 m² | 98 m² | +39 m² +66% | 2009 |
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| 67, Longs Way749 m away | 86 m² | 123 m² | +37 m² +43% | 2021 |
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| 87, London Road790 m away | 119 m² | 155 m² | +36 m² +30% | 2011 |
|---|
| 22, Hawkins Way951 m away | 84 m² | 118 m² | +34 m² +40% | 2022 |
|---|
| 6, Moores Green586 m away | 177 m² | 211 m² | +34 m² +19% | 2015 |
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| 4, Hazylwood869 m away | 105 m² | 138 m² | +33 m² +31% | 2025 |
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| 36, Easthampstead Road942 m away | 55 m² | 88 m² | +33 m² +60% | 2025 |
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| 20, Stanley Road916 m away | 69 m² | 102 m² | +33 m² +48% | 2024 |
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| 19, Culver Grove717 m away | 108 m² | 140 m² | +32 m² +30% | 2026 |
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| 6, Shute End983 m away | 155 m² | 187 m² | +32 m² +21% | 2025 |
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| 4, Rosebay898 m away | 107 m² | 139 m² | +32 m² +30% | 2023 |
|---|
| 25, Benning Way192 m away | 110 m² | 142 m² | +32 m² +29% | 2019 |
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| 42, Deacon Close190 m away | 81 m² | 111 m² | +30 m² +37% | 2019 |
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| 21a, The Terrace969 m away | 40 m² | 70 m² | +30 m² +75% | 2012 |
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| 12, Stanley Road916 m away | 69 m² | 98 m² | +29 m² +42% | 2026 |
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| 5, Wescott Road955 m away | 76 m² | 105 m² | +29 m² +38% | 2022 |
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| 14, Hutsons Close487 m away | 68 m² | 97 m² | +29 m² +43% | 2015 |
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| 13, Ashridge Road341 m away | 51 m² | 80 m² | +29 m² +57% | 2011 |
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| 27, Wheeler Avenue690 m away | 84 m² | 112 m² | +28 m² +33% | 2021 |
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| 8, Cheeseman Close198 m away | 81 m² | 109 m² | +28 m² +35% | 2016 |
|---|
| 22, Stanley Road916 m away | 110 m² | 136 m² | +26 m² +24% | 2024 |
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| 60, Rose Street841 m away | 76 m² | 101 m² | +25 m² +33% | 2012 |
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| 9, Campion Way820 m away | 142 m² | 166 m² | +24 m² +17% | 2025 |
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| 9, Hughes Road678 m away | 96 m² | 119 m² | +23 m² +24% | 2022 |
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| 22a, Trefoil Close860 m away | 62 m² | 85 m² | +23 m² +37% | 2020 |
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| 8, Rose Gardens813 m away | 61 m² | 84 m² | +23 m² +38% | 2016 |
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| 74, Norreys Avenue376 m away | 73 m² | 96 m² | +23 m² +32% | 2012 |
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| 6, Bishops Drive220 m away | 143 m² | 165 m² | +22 m² +15% | 2024 |
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| 30, Academy House, Woolf Drive600 m away | 73 m² | 95 m² | +22 m² +30% | 2024 |
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| 3, Highfield Close781 m away | 82 m² | 104 m² | +22 m² +27% | 2024 |
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| 3, Payley Drive863 m away | 92 m² | 114 m² | +22 m² +24% | 2020 |
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| 21, Herd Drive998 m away | 65 m² | 87 m² | +22 m² +34% | 2020 |
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| 6, Crutchley Road125 m away | 90 m² | 112 m² | +22 m² +24% | 2016 |
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| 26, Pigott Road535 m away | 98 m² | 119 m² | +21 m² +21% | 2026 |
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| 25, Macphail Close777 m away | 61 m² | 82 m² | +21 m² +34% | 2024 |
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| 9, Stanley Road916 m away | 105 m² | 126 m² | +21 m² +20% | 2023 |
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| 3, Clover Close845 m away | 74 m² | 95 m² | +21 m² +28% | 2020 |
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| 6, Chambers Way787 m away | 70 m² | 90 m² | +20 m² +29% | 2026 |
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| 7, Rectory Close810 m away | 92 m² | 112 m² | +20 m² +22% | 2024 |
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| 34, Sarum Crescent251 m away | 104 m² | 124 m² | +20 m² +19% | 2020 |
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| 79, London Road790 m away | 126 m² | 146 m² | +20 m² +16% | 2019 |
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| 21, Seaford Road942 m away | 73 m² | 93 m² | +20 m² +27% | 2019 |
|---|
| 31, Benning Way192 m away | 113 m² | 133 m² | +20 m² +18% | 2018 |
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| 67, Peach Street882 m away | 60 m² | 80 m² | +20 m² +33% | 2016 |
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| 9, Hawkins Way951 m away | 85 m² | 105 m² | +20 m² +24% | 2014 |
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| 56, Wescott Road891 m away | 74 m² | 93 m² | +19 m² +26% | 2020 |
|---|
| 19, Macphail Close777 m away | 60 m² | 78 m² | +18 m² +30% | 2020 |
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| 37, Shefford Crescent220 m away | 109 m² | 126 m² | +17 m² +16% | 2026 |
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| 15, Osborne Road721 m away | 113 m² | 130 m² | +17 m² +15% | 2023 |
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| 62, Shefford Crescent220 m away | 85 m² | 102 m² | +17 m² +20% | 2020 |
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| 18, Easthampstead Road942 m away | 64 m² | 81 m² | +17 m² +27% | 2020 |
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| 33a, Peach Street978 m away | 62 m² | 79 m² | +17 m² +27% | 2020 |
|---|
| 38, Headington Drive113 m away | 111 m² | 128 m² | +17 m² +15% | 2016 |
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| 15, Shefford Crescent220 m away | 110 m² | 127 m² | +17 m² +15% | 2015 |
|---|
| 40, Dowles Green755 m away | 91 m² | 107 m² | +16 m² +18% | 2021 |
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| 5, Rose Court825 m away | 40 m² | 56 m² | +16 m² +40% | 2021 |
|---|
| 25, Herd Drive998 m away | 71 m² | 87 m² | +16 m² +23% | 2020 |
|---|
| 19, All Saints Close282 m away | 99 m² | 115 m² | +16 m² +16% | 2018 |
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| 25, Poppy Place882 m away | 75 m² | 90 m² | +15 m² +20% | 2026 |
|---|
| 23, Herd Drive998 m away | 72 m² | 87 m² | +15 m² +21% | 2020 |
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| 35, Barrett Crescent872 m away | 94 m² | 109 m² | +15 m² +16% | 2014 |
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