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 CM17 9PS
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 |
|---|---|---|---|---|
| 15, Doulton Close435 m away | 112 m² | 204 m² | +92 m² +82% | 2015 |
| 5, Oaktree Gardens770 m away | 94 m² | 185 m² | +91 m² +97% | 2022 |
| 19, Albertine Street876 m away | 86 m² | 162 m² | +76 m² +88% | 2018 |
| 16, Milestone Road929 m away | 58 m² | 131 m² | +73 m² +126% | 2020 |
| 53, Elwood306 m away | 67 m² | 140 m² | +73 m² +109% | 2015 |
| 153, Doulton Close520 m away | 83 m² | 154 m² | +71 m² +86% | 2023 |
| 30, Aynsley Gardens552 m away | 84 m² | 154 m² | +70 m² +83% | 2025 |
| 12, Langdale Street697 m away | 121 m² | 191 m² | +70 m² +58% | 2024 |
| Waterlees, Harlow Common991 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.
| 357 m² |
| 426 m² |
| +69 m² +19% |
| 2026 |
| 185, Malkin Drive789 m away | 98 m² | 167 m² | +69 m² +70% | 2024 |
|---|
| 98, Ridgeways518 m away | 53 m² | 121 m² | +68 m² +128% | 2018 |
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| 15, Maypole Street768 m away | 61 m² | 126 m² | +65 m² +107% | 2011 |
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| 41, Whieldon Grange649 m away | 152 m² | 216 m² | +64 m² +42% | 2024 |
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| 36, Denby Grange217 m away | 138 m² | 202 m² | +64 m² +46% | 2021 |
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| 7, Honor Street629 m away | 102 m² | 164 m² | +62 m² +61% | 2019 |
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| 24, Burley Hill701 m away | 107 m² | 168 m² | +61 m² +57% | 2021 |
|---|
| 119, Ashworth Place152 m away | 97 m² | 158 m² | +61 m² +63% | 2019 |
|---|
| 245, Malkin Drive754 m away | 60 m² | 117 m² | +57 m² +95% | 2019 |
|---|
| 60, The Chase770 m away | 141 m² | 197 m² | +56 m² +40% | 2026 |
|---|
| 79, Albert Gardens470 m away | 68 m² | 124 m² | +56 m² +82% | 2019 |
|---|
| 6, The Chase770 m away | 58 m² | 114 m² | +56 m² +97% | 2009 |
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| 110, Ridgeways518 m away | 96 m² | 151 m² | +55 m² +57% | 2026 |
|---|
| 61, Ashworth Place228 m away | 91 m² | 145 m² | +54 m² +59% | 2025 |
|---|
| 44, Malkin Drive683 m away | 120 m² | 169 m² | +49 m² +41% | 2025 |
|---|
| 2, Chamberlain Close660 m away | 49 m² | 98 m² | +49 m² +100% | 2021 |
|---|
| 112, Ridgeways518 m away | 109 m² | 157 m² | +48 m² +44% | 2019 |
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| 74, Aynsley Gardens517 m away | 78 m² | 125 m² | +47 m² +60% | 2023 |
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| 231, Potters Field941 m away | 84 m² | 131 m² | +47 m² +56% | 2010 |
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| Blackbird, Red Lion Lane810 m away | 66 m² | 112 m² | +46 m² +70% | 2020 |
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| 1, Chelsea Gardens481 m away | 44 m² | 88 m² | +44 m² +100% | 2021 |
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| 12, Brickcroft Hoppit621 m away | 81 m² | 123 m² | +42 m² +52% | 2014 |
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| 37, Heathcote Gardens298 m away | 102 m² | 140 m² | +38 m² +37% | 2015 |
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| 16, Braggowens Ley650 m away | 81 m² | 119 m² | +38 m² +47% | 2015 |
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| 89, Ridgeways493 m away | 81 m² | 118 m² | +37 m² +46% | 2026 |
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| 38, Braggowens Ley650 m away | 99 m² | 136 m² | +37 m² +37% | 2022 |
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| 73, Mallards Rise416 m away | 58 m² | 93 m² | +35 m² +60% | 2026 |
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| 13, Heathcote Gardens298 m away | 121 m² | 156 m² | +35 m² +29% | 2025 |
|---|
| 4, Tatton Street879 m away | 111 m² | 146 m² | +35 m² +32% | 2021 |
|---|
| 15, Ashworth Place228 m away | 171 m² | 206 m² | +35 m² +20% | 2018 |
|---|
| 154, Rushton Grove90 m away | 123 m² | 158 m² | +35 m² +28% | 2016 |
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| 37, Braggowens Ley650 m away | 99 m² | 133 m² | +34 m² +34% | 2024 |
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| 21, Heathcote Gardens298 m away | 84 m² | 118 m² | +34 m² +40% | 2015 |
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| 8, Whieldon Grange649 m away | 151 m² | 184 m² | +33 m² +22% | 2025 |
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| 90, Perry Spring955 m away | 71 m² | 104 m² | +33 m² +46% | 2017 |
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| 10, Burley Hill701 m away | 26 m² | 58 m² | +32 m² +123% | 2025 |
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| 12, Soper Square748 m away | 69 m² | 101 m² | +32 m² +46% | 2022 |
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| 6, Denby Grange217 m away | 138 m² | 169 m² | +31 m² +22% | 2024 |
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| 65, Tickenhall Drive411 m away | 53 m² | 84 m² | +31 m² +58% | 2021 |
|---|
| 5, Barnsley Wood Rise372 m away | 83 m² | 113 m² | +30 m² +36% | 2025 |
|---|
| 47, Burley Hill701 m away | 61 m² | 91 m² | +30 m² +49% | 2025 |
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| 61, Doulton Close538 m away | 54 m² | 84 m² | +30 m² +56% | 2020 |
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| 266, Malkin Drive754 m away | 55 m² | 85 m² | +30 m² +55% | 2019 |
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| 148, Doulton Close520 m away | 91 m² | 121 m² | +30 m² +33% | 2015 |
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| 81, Doulton Close538 m away | 83 m² | 112 m² | +29 m² +35% | 2021 |
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| 54, Wedgewood Drive274 m away | 67 m² | 96 m² | +29 m² +43% | 2020 |
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| 12, Heathcote Gardens298 m away | 82 m² | 111 m² | +29 m² +35% | 2020 |
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| 51, Doulton Close435 m away | 73 m² | 102 m² | +29 m² +40% | 2014 |
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| 14, Great Auger Street622 m away | 146 m² | 174 m² | +28 m² +19% | 2026 |
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| 61, Davenport590 m away | 69 m² | 97 m² | +28 m² +41% | 2024 |
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| 10, Kingsdon Lane948 m away | 108 m² | 136 m² | +28 m² +26% | 2022 |
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| 2, Wayside Bungalows810 m away | 146 m² | 174 m² | +28 m² +19% | 2013 |
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| 45, Whieldon Grange649 m away | 166 m² | 193 m² | +27 m² +16% | 2025 |
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| 11, Whieldon Grange649 m away | 117 m² | 144 m² | +27 m² +23% | 2021 |
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| 1, Allis Mews832 m away | 68 m² | 95 m² | +27 m² +40% | 2019 |
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| 18, Ramblers Lane644 m away | 116 m² | 143 m² | +27 m² +23% | 2018 |
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| 120, Ridgeways518 m away | 60 m² | 86 m² | +26 m² +43% | 2024 |
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| 175, Malkin Drive789 m away | 62 m² | 87 m² | +25 m² +40% | 2023 |
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| 49, Bentley Drive716 m away | 80 m² | 105 m² | +25 m² +31% | 2020 |
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| 3, Coalport Close726 m away | 70 m² | 95 m² | +25 m² +36% | 2020 |
|---|
| 113, Ridgeways518 m away | 90 m² | 114 m² | +24 m² +27% | 2023 |
|---|
| 82, Challinor468 m away | 74 m² | 98 m² | +24 m² +32% | 2015 |
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| 105, Challinor468 m away | 79 m² | 103 m² | +24 m² +30% | 2014 |
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| 27, Belfield Gardens750 m away | 78 m² | 102 m² | +24 m² +31% | 2013 |
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| 30, Doulton Close435 m away | 83 m² | 106 m² | +23 m² +28% | 2013 |
|---|
| 24, Challinor351 m away | 133 m² | 155 m² | +22 m² +17% | 2026 |
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| 6, Doulton Close435 m away | 54 m² | 76 m² | +22 m² +41% | 2024 |
|---|
| 154, Malkin Drive789 m away | 78 m² | 100 m² | +22 m² +28% | 2021 |
|---|
| 52, Albert Gardens468 m away | 58 m² | 80 m² | +22 m² +38% | 2016 |
|---|
| 45, Mallards Rise416 m away | 58 m² | 79 m² | +21 m² +36% | 2024 |
|---|
| 65, Albert Gardens470 m away | 58 m² | 79 m² | +21 m² +36% | 2024 |
|---|
| 196, Malkin Drive825 m away | 105 m² | 126 m² | +21 m² +20% | 2023 |
|---|
| 80, Coalport Close785 m away | 59 m² | 79 m² | +20 m² +34% | 2025 |
|---|
| 71, Malkin Drive683 m away | 32 m² | 52 m² | +20 m² +63% | 2023 |
|---|
| 20, Flint Lane746 m away | 90 m² | 110 m² | +20 m² +22% | 2022 |
|---|
| 59, Abbeydale Close904 m away | 60 m² | 80 m² | +20 m² +33% | 2020 |
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| 11, Flint Lane746 m away | 103 m² | 123 m² | +20 m² +19% | 2018 |
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| 50, Belfield Gardens750 m away | 103 m² | 123 m² | +20 m² +19% | 2015 |
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| 12, Fenton Grange826 m away | 75 m² | 95 m² | +20 m² +27% | 2013 |
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| 87, Bentley Drive615 m away | 74 m² | 93 m² | +19 m² +26% | 2026 |
|---|
| 70, Elwood396 m away | 116 m² | 135 m² | +19 m² +16% | 2024 |
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| 57, Chelsea Gardens481 m away | 57 m² | 76 m² | +19 m² +33% | 2023 |
|---|
| 84, Tickenhall Drive411 m away | 65 m² | 84 m² | +19 m² +29% | 2022 |
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| 154, Challinor479 m away | 65 m² | 84 m² | +19 m² +29% | 2014 |
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| 50, Tickenhall Drive517 m away | 59 m² | 78 m² | +19 m² +32% | 2014 |
|---|
| 106, Wedgewood Drive274 m away | 80 m² | 99 m² | +19 m² +24% | 2010 |
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| 20, Bentley Drive716 m away | 82 m² | 100 m² | +18 m² +22% | 2024 |
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| 67, Wedgewood Drive274 m away | 66 m² | 84 m² | +18 m² +27% | 2020 |
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| 141, Doulton Close520 m away | 55 m² | 73 m² | +18 m² +33% | 2015 |
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| 161, Fullers Mead928 m away | 69 m² | 87 m² | +18 m² +26% | 2014 |
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| 19, Heathcote Gardens298 m away | 77 m² | 94 m² | +17 m² +22% | 2025 |
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| 157, Coalport Close856 m away | 62 m² | 79 m² | +17 m² +27% | 2024 |
|---|
| 17, Fenton Grange826 m away | 107 m² | 124 m² | +17 m² +16% | 2020 |
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| 34, Sheldon Close167 m away | 63 m² | 80 m² | +17 m² +27% | 2018 |
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| 44, Westbury Rise544 m away | 80 m² | 97 m² | +17 m² +21% | 2018 |
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| 91, Challinor468 m away | 65 m² | 81 m² | +16 m² +25% | 2026 |
|---|
| 100, Ridgeways518 m away | 56 m² | 72 m² | +16 m² +29% | 2025 |
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| 166, Challinor479 m away | 69 m² | 85 m² | +16 m² +23% | 2020 |
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| 80, Albert Gardens470 m away | 68 m² | 84 m² | +16 m² +24% | 2019 |
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| 1, Alba Road791 m away | 70 m² | 86 m² | +16 m² +23% | 2019 |
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| 137, Challinor479 m away | 61 m² | 77 m² | +16 m² +26% | 2016 |
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| 34, Bentley Drive716 m away | 89 m² | 105 m² | +16 m² +18% | 2016 |
|---|
| 143, Doulton Close520 m away | 54 m² | 70 m² | +16 m² +30% | 2014 |
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| 92, Rushton Grove0 m away | 53 m² | 68 m² | +15 m² +28% | 2025 |
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| 12, Chelsea Gardens481 m away | 61 m² | 76 m² | +15 m² +25% | 2024 |
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| 43, Ridgeways416 m away | 67 m² | 82 m² | +15 m² +22% | 2023 |
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| 30, Westbury Rise544 m away | 63 m² | 78 m² | +15 m² +24% | 2023 |
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| 30, Alexandra Road903 m away | 63 m² | 78 m² | +15 m² +24% | 2023 |
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| 35, Coalport Close726 m away | 60 m² | 75 m² | +15 m² +25% | 2022 |
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| 56, Ridgeways493 m away | 79 m² | 94 m² | +15 m² +19% | 2021 |
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| 66, Rushton Grove73 m away | 98 m² | 113 m² | +15 m² +15% | 2018 |
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| 30, Albert Gardens468 m away | 86 m² | 101 m² | +15 m² +17% | 2013 |
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| 31, Burley Hill701 m away | 59 m² | 74 m² | +15 m² +25% | 2011 |
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| 93, Perry Spring955 m away | 60 m² | 75 m² | +15 m² +25% | 2011 |
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