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 NN5 7AL
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 |
|---|---|---|---|---|
| 115, Harlestone Road718 m away | 179 m² | 365 m² | +186 m² +104% | 2025 |
| 1, Edgehill Road453 m away | 116 m² | 263 m² | +147 m² +127% | 2020 |
| Brooklands, The Avenue612 m away | 112 m² | 243 m² | +131 m² +117% | 2015 |
| 41, Chiltern Avenue569 m away | 112 m² | 210 m² | +98 m² +88% | 2016 |
| 30d, Aberdare Road869 m away | 86 m² | 161 m² | +75 m² +87% | 2026 |
| 5, The Avenue612 m away | 264 m² | 339 m² | +75 m² +28% | 2014 |
| 23, Westbury Close827 m away | 72 m² | 145 m² | +73 m² +101% | 2026 |
| 87, Bants Lane683 m away | 97 m² | 156 m² | +59 m² +61% | 2024 |
| 13, West Oval473 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.
| 98 m² |
| 155 m² |
| +57 m² +58% |
| 2020 |
| 106, Harlestone Road718 m away | 160 m² | 215 m² | +55 m² +34% | 2024 |
|---|
| 9, Melrose Avenue575 m away | 99 m² | 153 m² | +54 m² +55% | 2023 |
|---|
| 15, Brook Lane561 m away | 71 m² | 121 m² | +50 m² +70% | 2023 |
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| 12, Liberty Drive998 m away | 47 m² | 96 m² | +49 m² +104% | 2020 |
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| 44, Sulgrave Road825 m away | 88 m² | 137 m² | +49 m² +56% | 2014 |
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| 18, Holyrood Road890 m away | 135 m² | 183 m² | +48 m² +36% | 2015 |
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| 16, Woodside Green426 m away | 81 m² | 126 m² | +45 m² +56% | 2024 |
|---|
| 19, Trevor Close690 m away | 45 m² | 89 m² | +44 m² +98% | 2025 |
|---|
| 58, Malcolm Drive859 m away | 65 m² | 106 m² | +41 m² +63% | 2020 |
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| 94, Cotswold Avenue650 m away | 91 m² | 130 m² | +39 m² +43% | 2022 |
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| 55, Dallington Road601 m away | 197 m² | 235 m² | +38 m² +19% | 2025 |
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| 45, Quantock Crescent561 m away | 65 m² | 102 m² | +37 m² +57% | 2026 |
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| 40, Corran Close0 m away | 76 m² | 113 m² | +37 m² +49% | 2024 |
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| 3, Lewis Road881 m away | 100 m² | 136 m² | +36 m² +36% | 2025 |
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| 73, Sam Harrison Way934 m away | 118 m² | 153 m² | +35 m² +30% | 2026 |
|---|
| 3, Penarth Road888 m away | 61 m² | 96 m² | +35 m² +57% | 2011 |
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| 13, Chiltern Avenue569 m away | 79 m² | 113 m² | +34 m² +43% | 2025 |
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| 7, Tenby Road889 m away | 82 m² | 114 m² | +32 m² +39% | 2023 |
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| 38, Bants Lane875 m away | 56 m² | 87 m² | +31 m² +55% | 2026 |
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| 10, Malcolm Drive859 m away | 54 m² | 85 m² | +31 m² +57% | 2021 |
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| 8, Cameron Crescent613 m away | 51 m² | 82 m² | +31 m² +61% | 2019 |
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| 56, Liberty Drive998 m away | 70 m² | 100 m² | +30 m² +43% | 2016 |
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| 7, Cheddar Close711 m away | 44 m² | 73 m² | +29 m² +66% | 2021 |
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| 102, Duston Road981 m away | 95 m² | 123 m² | +28 m² +29% | 2020 |
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| Stable House, 114, Harlestone Road173 m away | 107 m² | 134 m² | +27 m² +25% | 2021 |
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| 28, Montague Crescent965 m away | 121 m² | 148 m² | +27 m² +22% | 2014 |
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| Stonesthrow, 2b, Dallington Green472 m away | 164 m² | 190 m² | +26 m² +16% | 2023 |
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| 34, Tresham Green823 m away | 97 m² | 122 m² | +25 m² +26% | 2019 |
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| 3, Trent Close925 m away | 83 m² | 108 m² | +25 m² +30% | 2016 |
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| 9, Woodside Green426 m away | 85 m² | 109 m² | +24 m² +28% | 2026 |
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| 40, Edgehill Road640 m away | 50 m² | 74 m² | +24 m² +48% | 2024 |
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| 19, The Lawns332 m away | 84 m² | 108 m² | +24 m² +29% | 2015 |
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| 18, Knightscliffe Way681 m away | 86 m² | 109 m² | +23 m² +27% | 2021 |
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| 46, Merthyr Road779 m away | 75 m² | 98 m² | +23 m² +31% | 2020 |
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| 5, Dallington Court, Dallington Park Road337 m away | 111 m² | 134 m² | +23 m² +21% | 2019 |
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| 2, Medway Drive707 m away | 80 m² | 102 m² | +22 m² +28% | 2022 |
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| 78, Windsor Crescent917 m away | 67 m² | 87 m² | +20 m² +30% | 2025 |
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| 184, Bants Lane487 m away | 84 m² | 104 m² | +20 m² +24% | 2024 |
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| 114, Dallington Road601 m away | 78 m² | 98 m² | +20 m² +26% | 2024 |
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| 7, Forfar Street985 m away | 81 m² | 101 m² | +20 m² +25% | 2023 |
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| 114, Duston Road975 m away | 69 m² | 88 m² | +19 m² +28% | 2014 |
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| 3, Edgehill Road453 m away | 87 m² | 105 m² | +18 m² +21% | 2023 |
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| 59, Derwent Drive892 m away | 65 m² | 83 m² | +18 m² +28% | 2023 |
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| 54, Duston Road981 m away | 88 m² | 106 m² | +18 m² +20% | 2022 |
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| 13, Franklin Crescent904 m away | 43 m² | 61 m² | +18 m² +42% | 2017 |
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| 26, Liberty Drive998 m away | 68 m² | 86 m² | +18 m² +26% | 2015 |
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| 5, The Bartons Close452 m away | 92 m² | 109 m² | +17 m² +18% | 2023 |
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| 37, Windsor Crescent957 m away | 87 m² | 104 m² | +17 m² +20% | 2021 |
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| 6, Mendip Road655 m away | 41 m² | 58 m² | +17 m² +41% | 2015 |
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| 49, Knightscliffe Way707 m away | 103 m² | 119 m² | +16 m² +16% | 2026 |
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| 50, Cotswold Avenue650 m away | 91 m² | 107 m² | +16 m² +18% | 2025 |
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| 38, Duston Road981 m away | 97 m² | 113 m² | +16 m² +16% | 2024 |
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| 7, Lennox Walk965 m away | 88 m² | 104 m² | +16 m² +18% | 2023 |
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| 1, Trevor Close690 m away | 68 m² | 84 m² | +16 m² +24% | 2020 |
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| 136, Harlestone Road173 m away | 73 m² | 89 m² | +16 m² +22% | 2018 |
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| 31, Forfar Street985 m away | 74 m² | 90 m² | +16 m² +22% | 2016 |
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| 1, Ellesmere Avenue893 m away | 102 m² | 118 m² | +16 m² +16% | 2014 |
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| 77, Cameron Drive577 m away | 86 m² | 101 m² | +15 m² +17% | 2024 |
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| 3, The Bartons Close452 m away | 93 m² | 108 m² | +15 m² +16% | 2023 |
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| 11, Calder Green479 m away | 62 m² | 77 m² | +15 m² +24% | 2022 |
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| 63, Chiltern Avenue535 m away | 81 m² | 96 m² | +15 m² +19% | 2014 |
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| 9, Bobtail Court944 m away | 85 m² | 100 m² | +15 m² +18% | 2011 |
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