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 CT9 3XF
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 |
|---|---|---|---|---|
| 60, Northumberland Avenue988 m away | 137 m² | 306 m² | +169 m² +123% | 2023 |
| 16, Omer Avenue992 m away | 102 m² | 240 m² | +138 m² +135% | 2011 |
| 40, Gloucester Avenue923 m away | 129 m² | 255 m² | +126 m² +98% | 2024 |
| 19, David Avenue906 m away | 121 m² | 211 m² | +90 m² +74% | 2016 |
| 64, Northdown Hill772 m away | 101 m² | 160 m² | +59 m² +58% | 2015 |
| 42, Gloucester Avenue923 m away | 116 m² | 174 m² | +58 m² +50% | 2025 |
| 71, Arlington Gardens427 m away | 95 m² | 153 m² | +58 m² +61% | 2014 |
| 23, Kent Road659 m away | 92 m² | 149 m² | +57 m² +62% | 2026 |
| 9a, Cudham Gardens917 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.
| 108 m² |
| 163 m² |
| +55 m² +51% |
| 2026 |
| 11, Clarence Avenue905 m away | 81 m² | 134 m² | +53 m² +65% | 2026 |
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| 15, David Avenue906 m away | 123 m² | 176 m² | +53 m² +43% | 2024 |
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| 99, Northumberland Avenue699 m away | 128 m² | 176 m² | +48 m² +38% | 2024 |
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| 100, Millmead Road350 m away | 130 m² | 178 m² | +48 m² +37% | 2020 |
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| 165, Northdown Park Road337 m away | 71 m² | 118 m² | +47 m² +66% | 2025 |
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| 9, Invicta Road518 m away | 117 m² | 164 m² | +47 m² +40% | 2022 |
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| 33, Dalmeny Avenue530 m away | 71 m² | 117 m² | +46 m² +65% | 2025 |
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| 457a, Northdown Road789 m away | 91 m² | 136 m² | +45 m² +49% | 2015 |
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| 20, Albert Road842 m away | 99 m² | 144 m² | +45 m² +45% | 2014 |
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| 10, Arlington Gardens265 m away | 95 m² | 138 m² | +43 m² +45% | 2026 |
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| 397, Northdown Road838 m away | 87 m² | 130 m² | +43 m² +49% | 2024 |
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| 15, West Park Avenue655 m away | 85 m² | 127 m² | +42 m² +49% | 2021 |
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| 14, Kent Road659 m away | 83 m² | 124 m² | +41 m² +49% | 2026 |
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| 50, Victoria Avenue719 m away | 65 m² | 106 m² | +41 m² +63% | 2014 |
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| 37, Holly Lane643 m away | 141 m² | 179 m² | +38 m² +27% | 2023 |
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| 28, Gloucester Avenue923 m away | 140 m² | 177 m² | +37 m² +26% | 2016 |
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| 32, Dalmeny Avenue530 m away | 109 m² | 145 m² | +36 m² +33% | 2025 |
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| 24, Holly Lane643 m away | 197 m² | 232 m² | +35 m² +18% | 2023 |
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| 29, St Michaels Avenue394 m away | 82 m² | 117 m² | +35 m² +43% | 2020 |
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| 113, Northdown Park Road522 m away | 62 m² | 96 m² | +34 m² +55% | 2020 |
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| 73, Northdown Park Road813 m away | 153 m² | 186 m² | +33 m² +22% | 2026 |
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| 29, Cedar Close790 m away | 80 m² | 113 m² | +33 m² +41% | 2023 |
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| Dallington, Richmond Avenue929 m away | 200 m² | 233 m² | +33 m² +17% | 2016 |
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| 44, Irvine Drive248 m away | 82 m² | 114 m² | +32 m² +39% | 2025 |
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| 11, The Ridgeway879 m away | 101 m² | 133 m² | +32 m² +32% | 2025 |
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| 26, Victor Avenue917 m away | 86 m² | 118 m² | +32 m² +37% | 2025 |
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| The Little House, St Peters Footpath801 m away | 62 m² | 92 m² | +30 m² +48% | 2022 |
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| 434, Northdown Road720 m away | 82 m² | 112 m² | +30 m² +37% | 2021 |
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| 67, Upper Dane Road963 m away | 124 m² | 154 m² | +30 m² +24% | 2018 |
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| 19, Victoria Avenue950 m away | 55 m² | 84 m² | +29 m² +53% | 2018 |
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| 22, Northdown Park Road966 m away | 106 m² | 135 m² | +29 m² +27% | 2017 |
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| 85, Northumberland Avenue699 m away | 130 m² | 159 m² | +29 m² +22% | 2016 |
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| 32, Fitzroy Avenue895 m away | 90 m² | 118 m² | +28 m² +31% | 2017 |
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| 187, Millmead Road129 m away | 95 m² | 122 m² | +27 m² +28% | 2012 |
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| 54, Whitfield Avenue706 m away | 96 m² | 122 m² | +26 m² +27% | 2013 |
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| 295, Northdown Road984 m away | 109 m² | 134 m² | +25 m² +23% | 2025 |
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| 9, Foreland Avenue609 m away | 102 m² | 127 m² | +25 m² +25% | 2022 |
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| 38, Princess Margaret Avenue934 m away | 70 m² | 95 m² | +25 m² +36% | 2022 |
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| 14, Elfrida Close189 m away | 90 m² | 115 m² | +25 m² +28% | 2020 |
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| Belle Cottage, Green Lane535 m away | 85 m² | 109 m² | +24 m² +28% | 2019 |
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| 22, Old Green Road654 m away | 76 m² | 100 m² | +24 m² +32% | 2010 |
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| 39, St Michaels Avenue394 m away | 71 m² | 94 m² | +23 m² +32% | 2022 |
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| 27, Friends Avenue72 m away | 84 m² | 107 m² | +23 m² +27% | 2020 |
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| 387, Northdown Road838 m away | 81 m² | 104 m² | +23 m² +28% | 2020 |
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| 45, St Michaels Avenue394 m away | 71 m² | 94 m² | +23 m² +32% | 2016 |
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| 27, Albert Road842 m away | 94 m² | 117 m² | +23 m² +24% | 2014 |
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| 16, St Anthonys Way554 m away | 96 m² | 118 m² | +22 m² +23% | 2024 |
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| 31, Dalmeny Avenue530 m away | 113 m² | 135 m² | +22 m² +19% | 2021 |
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| 57, Prince Charles Road999 m away | 67 m² | 89 m² | +22 m² +33% | 2020 |
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| Sunnyside, St Peters Footpath801 m away | 117 m² | 138 m² | +21 m² +18% | 2014 |
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| 6, Millmead Gardens224 m away | 67 m² | 87 m² | +20 m² +30% | 2024 |
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| 432, Northdown Road731 m away | 107 m² | 127 m² | +20 m² +19% | 2023 |
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| 22, David Avenue906 m away | 86 m² | 106 m² | +20 m² +23% | 2022 |
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| 38, Queen Elizabeth Avenue409 m away | 72 m² | 92 m² | +20 m² +28% | 2010 |
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| 477, Northdown Road789 m away | 105 m² | 124 m² | +19 m² +18% | 2022 |
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| 217, Northdown Park Road436 m away | 93 m² | 112 m² | +19 m² +20% | 2020 |
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| 23, Fosters Avenue931 m away | 84 m² | 103 m² | +19 m² +23% | 2018 |
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| 12, Holly Gardens716 m away | 99 m² | 118 m² | +19 m² +19% | 2017 |
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| 92, Prince Charles Road999 m away | 80 m² | 98 m² | +18 m² +23% | 2024 |
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| 5, Gloucester Avenue922 m away | 108 m² | 126 m² | +18 m² +17% | 2016 |
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| 5, Whitfield Avenue706 m away | 79 m² | 97 m² | +18 m² +23% | 2015 |
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| 424, Northdown Road731 m away | 114 m² | 132 m² | +18 m² +16% | 2015 |
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| 37, Grafton Road980 m away | 64 m² | 82 m² | +18 m² +28% | 2013 |
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| 368a, Northdown Road841 m away | 79 m² | 96 m² | +17 m² +22% | 2026 |
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| 427, Northdown Road731 m away | 78 m² | 95 m² | +17 m² +22% | 2025 |
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| 40, Arlington Gardens265 m away | 81 m² | 98 m² | +17 m² +21% | 2021 |
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| 24, Clarence Avenue905 m away | 84 m² | 100 m² | +16 m² +19% | 2017 |
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| 1, Victoria Avenue678 m away | 69 m² | 85 m² | +16 m² +23% | 2014 |
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| 96, Northdown Park Road391 m away | 94 m² | 110 m² | +16 m² +17% | 2013 |
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| 22, St Anthonys Way554 m away | 78 m² | 93 m² | +15 m² +19% | 2021 |
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| 6, Palmer Crescent275 m away | 83 m² | 98 m² | +15 m² +18% | 2017 |
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