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 WD7 8JY
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 |
|---|---|---|---|---|
| 6, Loom Lane740 m away | 348 m² | 704 m² | +356 m² +102% | 2023 |
| 34, Newlands Avenue577 m away | 284 m² | 635 m² | +351 m² +124% | 2025 |
| 36, Newlands Avenue577 m away | 313 m² | 648 m² | +335 m² +107% | 2021 |
| 37, The Avenue636 m away | 214 m² | 516 m² | +302 m² +141% | 2025 |
| 28, Watford Road514 m away | 343 m² | 645 m² | +302 m² +88% | 2023 |
| 50, Newlands Avenue577 m away | 210 m² | 477 m² | +267 m² +127% | 2023 |
| 2, Gills Hill Lane567 m away | 165 m² | 408 m² | +243 m² +147% | 2024 |
| 14, Letchmore Road430 m away | 203 m² | 417 m² | +214 m² +105% | 2026 |
| 35, Loom Lane949 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.
| 576 m² |
| +209 m² +57% |
| 2014 |
| 67, Goodyers Avenue705 m away | 179 m² | 383 m² | +204 m² +114% | 2010 |
|---|
| 48, Newberries Avenue803 m away | 159 m² | 348 m² | +189 m² +119% | 2026 |
|---|
| 37, Williams Way930 m away | 163 m² | 340 m² | +177 m² +109% | 2020 |
|---|
| 4a, Beech Avenue614 m away | 159 m² | 335 m² | +176 m² +111% | 2012 |
|---|
| 15, Shenley Hill396 m away | 299 m² | 470 m² | +171 m² +57% | 2020 |
|---|
| 27, Canons Close500 m away | 161 m² | 329 m² | +168 m² +104% | 2016 |
|---|
| 28, Newberries Avenue803 m away | 128 m² | 289 m² | +161 m² +126% | 2017 |
|---|
| 38, Newberries Avenue803 m away | 167 m² | 327 m² | +160 m² +96% | 2022 |
|---|
| Briarwood, The Warren764 m away | 223 m² | 378 m² | +155 m² +70% | 2019 |
|---|
| 52, Links Drive839 m away | 132 m² | 285 m² | +153 m² +116% | 2025 |
|---|
| 48, Shenley Hill756 m away | 136 m² | 286 m² | +150 m² +110% | 2024 |
|---|
| 41, Aldenham Avenue565 m away | 164 m² | 314 m² | +150 m² +91% | 2023 |
|---|
| 10, Aldenham Avenue549 m away | 191 m² | 336 m² | +145 m² +76% | 2023 |
|---|
| 1a, The Drive469 m away | 220 m² | 359 m² | +139 m² +63% | 2023 |
|---|
| 11, Medow Mead936 m away | 148 m² | 285 m² | +137 m² +93% | 2025 |
|---|
| 32, Beech Avenue614 m away | 122 m² | 249 m² | +127 m² +104% | 2015 |
|---|
| 14, Mornington Road363 m away | 113 m² | 237 m² | +124 m² +110% | 2020 |
|---|
| 41, Watford Road840 m away | 162 m² | 286 m² | +124 m² +77% | 2018 |
|---|
| 18, Craigweil Avenue578 m away | 106 m² | 228 m² | +122 m² +115% | 2026 |
|---|
| 60, Williams Way930 m away | 110 m² | 229 m² | +119 m² +108% | 2020 |
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| 1, Radlett Park Road231 m away | 210 m² | 328 m² | +118 m² +56% | 2017 |
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| 121, Newberries Avenue878 m away | 131 m² | 245 m² | +114 m² +87% | 2026 |
|---|
| 33, Gills Hill412 m away | 168 m² | 282 m² | +114 m² +68% | 2018 |
|---|
| 9, The Avenue567 m away | 365 m² | 478 m² | +113 m² +31% | 2016 |
|---|
| 3, Loom Place803 m away | 184 m² | 295 m² | +111 m² +60% | 2025 |
|---|
| 54, Shenley Hill756 m away | 121 m² | 232 m² | +111 m² +92% | 2014 |
|---|
| 36, Oakridge Avenue961 m away | 109 m² | 219 m² | +110 m² +101% | 2015 |
|---|
| 3, Newberries Avenue467 m away | 110 m² | 219 m² | +109 m² +99% | 2020 |
|---|
| 23, Shenley Hill511 m away | 154 m² | 262 m² | +108 m² +70% | 2020 |
|---|
| 4, Regents Close522 m away | 141 m² | 247 m² | +106 m² +75% | 2021 |
|---|
| 7, Nightingale Close927 m away | 178 m² | 284 m² | +106 m² +60% | 2017 |
|---|
| Hazelwood, The Warren825 m away | 182 m² | 286 m² | +104 m² +57% | 2019 |
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| 33, Christchurch Crescent652 m away | 111 m² | 215 m² | +104 m² +94% | 2015 |
|---|
| 21, Elm Walk796 m away | 85 m² | 186 m² | +101 m² +119% | 2025 |
|---|
| 30, Letchmore Road430 m away | 278 m² | 378 m² | +100 m² +36% | 2022 |
|---|
| 20, The Grove326 m away | 156 m² | 256 m² | +100 m² +64% | 2020 |
|---|
| 30, Newlands Avenue577 m away | 390 m² | 488 m² | +98 m² +25% | 2020 |
|---|
| 13, Willow Way913 m away | 103 m² | 198 m² | +95 m² +92% | 2020 |
|---|
| 89, Newberries Avenue878 m away | 118 m² | 212 m² | +94 m² +80% | 2021 |
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| 46, Shenley Hill756 m away | 122 m² | 214 m² | +92 m² +75% | 2019 |
|---|
| 26, Craigweil Avenue644 m away | 95 m² | 184 m² | +89 m² +94% | 2025 |
|---|
| 73, Newberries Avenue754 m away | 192 m² | 280 m² | +88 m² +46% | 2025 |
|---|
| 11, Links Drive695 m away | 98 m² | 186 m² | +88 m² +90% | 2024 |
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| 12, Scrubbitts Park Road336 m away | 60 m² | 148 m² | +88 m² +147% | 2019 |
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| 8, Newberries Avenue530 m away | 117 m² | 205 m² | +88 m² +75% | 2013 |
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| 2, Folly Close775 m away | 175 m² | 262 m² | +87 m² +50% | 2012 |
|---|
| 66, Shenley Hill756 m away | 174 m² | 260 m² | +86 m² +49% | 2013 |
|---|
| 29, Williams Way805 m away | 115 m² | 199 m² | +84 m² +73% | 2023 |
|---|
| 4, Kitswell Way903 m away | 92 m² | 175 m² | +83 m² +90% | 2026 |
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| 9, The Rose Walk921 m away | 282 m² | 365 m² | +83 m² +29% | 2017 |
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| Station House, Shenley Hill208 m away | 141 m² | 224 m² | +83 m² +59% | 2016 |
|---|
| 40, Newberries Avenue803 m away | 107 m² | 189 m² | +82 m² +77% | 2013 |
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| 4, Loom Lane740 m away | 256 m² | 337 m² | +81 m² +32% | 2020 |
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| 16, Newberries Avenue530 m away | 150 m² | 227 m² | +77 m² +51% | 2024 |
|---|
| 20, Elm Walk796 m away | 83 m² | 156 m² | +73 m² +88% | 2015 |
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| 41, Elm Walk796 m away | 115 m² | 185 m² | +70 m² +61% | 2026 |
|---|
| 56, Links Drive839 m away | 107 m² | 177 m² | +70 m² +65% | 2016 |
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| Gravels, The Pathway775 m away | 198 m² | 268 m² | +70 m² +35% | 2013 |
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| Waverley, Hillside Road342 m away | 86 m² | 155 m² | +69 m² +80% | 2026 |
|---|
| 5, Highbridge Close811 m away | 64 m² | 132 m² | +68 m² +106% | 2009 |
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| 26, Shenley Hill497 m away | 172 m² | 239 m² | +67 m² +39% | 2025 |
|---|
| 57, Goodyers Avenue705 m away | 87 m² | 154 m² | +67 m² +77% | 2023 |
|---|
| 7, Dellfield Close753 m away | 320 m² | 387 m² | +67 m² +21% | 2021 |
|---|
| 9, Theobald Street714 m away | 177 m² | 243 m² | +66 m² +37% | 2026 |
|---|
| 34, Gills Hill Lane796 m away | 138 m² | 199 m² | +61 m² +44% | 2019 |
|---|
| Glenhurst, Beech Avenue583 m away | 116 m² | 177 m² | +61 m² +53% | 2018 |
|---|
| 37, Elm Walk796 m away | 82 m² | 143 m² | +61 m² +74% | 2016 |
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| Hawthorns, The Warren825 m away | 272 m² | 331 m² | +59 m² +22% | 2012 |
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| 51, Cobden Hill881 m away | 163 m² | 221 m² | +58 m² +36% | 2018 |
|---|
| 5, Maytrees873 m away | 333 m² | 390 m² | +57 m² +17% | 2024 |
|---|
| 4, Scrubbitts Park Road336 m away | 93 m² | 150 m² | +57 m² +61% | 2018 |
|---|
| 20, Aldenham Avenue549 m away | 167 m² | 223 m² | +56 m² +34% | 2026 |
|---|
| 24, Watling Street216 m away | 109 m² | 165 m² | +56 m² +51% | 2025 |
|---|
| Oakleigh, Willow Way964 m away | 111 m² | 164 m² | +53 m² +48% | 2026 |
|---|
| 19, Folly Close775 m away | 166 m² | 219 m² | +53 m² +32% | 2022 |
|---|
| 10, Links Drive669 m away | 96 m² | 148 m² | +52 m² +54% | 2024 |
|---|
| 6, Station Road32 m away | 103 m² | 155 m² | +52 m² +50% | 2019 |
|---|
| 2, Beech Avenue614 m away | 214 m² | 264 m² | +50 m² +23% | 2025 |
|---|
| 5, Aldenham Avenue395 m away | 167 m² | 217 m² | +50 m² +30% | 2024 |
|---|
| 1a, Willow Way913 m away | 101 m² | 151 m² | +50 m² +50% | 2013 |
|---|
| 3, The Crosspath252 m away | 203 m² | 252 m² | +49 m² +24% | 2025 |
|---|
| 8, Lodge End628 m away | 174 m² | 223 m² | +49 m² +28% | 2022 |
|---|
| 54, Links Drive839 m away | 108 m² | 156 m² | +48 m² +44% | 2025 |
|---|
| 3, Hill Croft874 m away | 270 m² | 318 m² | +48 m² +18% | 2024 |
|---|
| 19, Links Drive695 m away | 129 m² | 176 m² | +47 m² +36% | 2012 |
|---|
| 7, Highbridge Close811 m away | 136 m² | 182 m² | +46 m² +34% | 2021 |
|---|
| 45, Aldenham Avenue565 m away | 252 m² | 297 m² | +45 m² +18% | 2026 |
|---|
| Chase Lodge, Gills Hill Lane508 m away | 285 m² | 329 m² | +44 m² +15% | 2017 |
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| 6a, Aldenham Grove438 m away | 254 m² | 297 m² | +43 m² +17% | 2022 |
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| 19, The Avenue636 m away | 185 m² | 227 m² | +42 m² +23% | 2025 |
|---|
| 2a, Beech Avenue614 m away | 168 m² | 210 m² | +42 m² +25% | 2019 |
|---|
| 11, Park Road138 m away | 89 m² | 130 m² | +41 m² +46% | 2026 |
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| 24, The Grove326 m away | 159 m² | 200 m² | +41 m² +26% | 2025 |
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| 22, Christchurch Crescent719 m away | 105 m² | 146 m² | +41 m² +39% | 2014 |
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| 4, Dellfield Close753 m away | 134 m² | 174 m² | +40 m² +30% | 2020 |
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| 6, Nightingale Close927 m away | 215 m² | 253 m² | +38 m² +18% | 2023 |
|---|
| 40, Elm Walk796 m away | 112 m² | 150 m² | +38 m² +34% | 2019 |
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| 2, Aldenham Road54 m away | 85 m² | 123 m² | +38 m² +45% | 2012 |
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| 15, Park Road138 m away | 101 m² | 138 m² | +37 m² +37% | 2024 |
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| 12, Aldenham Road54 m away | 96 m² | 133 m² | +37 m² +39% | 2021 |
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| 3, Cragg Avenue910 m away | 83 m² | 119 m² | +36 m² +43% | 2019 |
|---|
| 50, Shenley Hill756 m away | 87 m² | 123 m² | +36 m² +41% | 2018 |
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| 75, The Crosspath148 m away | 86 m² | 122 m² | +36 m² +42% | 2017 |
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| 27, Radlett Park Road231 m away | 107 m² | 143 m² | +36 m² +34% | 2016 |
|---|
| 5, Craigweil Avenue608 m away | 148 m² | 181 m² | +33 m² +22% | 2013 |
|---|
| 1, The Rose Walk921 m away | 155 m² | 187 m² | +32 m² +21% | 2013 |
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| Fourways, Upper Station Road108 m away | 136 m² | 167 m² | +31 m² +23% | 2018 |
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| 6, Cobden Hill850 m away | 68 m² | 98 m² | +30 m² +44% | 2022 |
|---|
| 1, Links Drive695 m away | 96 m² | 126 m² | +30 m² +31% | 2014 |
|---|
| 45, Williams Way930 m away | 138 m² | 167 m² | +29 m² +21% | 2026 |
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| 43, Park Road138 m away | 148 m² | 177 m² | +29 m² +20% | 2025 |
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| 6, Gills Hill302 m away | 93 m² | 122 m² | +29 m² +31% | 2025 |
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| 39, Station Road0 m away | 79 m² | 106 m² | +27 m² +34% | 2025 |
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| 27a, Cobden Hill881 m away | 168 m² | 195 m² | +27 m² +16% | 2024 |
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| 1, The Heath904 m away | 173 m² | 200 m² | +27 m² +16% | 2023 |
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| 28, Watling Street216 m away | 95 m² | 122 m² | +27 m² +28% | 2022 |
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| 7, Upper Station Road108 m away | 101 m² | 128 m² | +27 m² +27% | 2017 |
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| 97, Brook Court728 m away | 73 m² | 99 m² | +26 m² +36% | 2024 |
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| 34, Craigweil Avenue644 m away | 125 m² | 151 m² | +26 m² +21% | 2015 |
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| Flat 9, Slade Court, Watling Street172 m away | 46 m² | 70 m² | +24 m² +52% | 2025 |
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| 4, The Mews881 m away | 142 m² | 166 m² | +24 m² +17% | 2025 |
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| 25, Station Road0 m away | 70 m² | 93 m² | +23 m² +33% | 2024 |
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| 22, Upper Station Road118 m away | 72 m² | 95 m² | +23 m² +32% | 2013 |
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| 2a, Newberries Avenue530 m away | 141 m² | 163 m² | +22 m² +16% | 2021 |
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| 1, Hill Croft874 m away | 120 m² | 141 m² | +21 m² +18% | 2025 |
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| 18, The Heath904 m away | 139 m² | 160 m² | +21 m² +15% | 2014 |
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| 3, Upper Station Road108 m away | 104 m² | 124 m² | +20 m² +19% | 2021 |
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| 44, Elm Walk796 m away | 100 m² | 119 m² | +19 m² +19% | 2026 |
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| 4, Aldenham Road54 m away | 88 m² | 107 m² | +19 m² +22% | 2025 |
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| 39, Gills Hill Lane876 m away | 116 m² | 135 m² | +19 m² +16% | 2023 |
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| 30, Station Road32 m away | 65 m² | 83 m² | +18 m² +28% | 2026 |
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| 251, Watling Street126 m away | 30 m² | 48 m² | +18 m² +60% | 2019 |
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| 18, Station Road32 m away | 71 m² | 88 m² | +17 m² +24% | 2016 |
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| 5, Station Road0 m away | 69 m² | 85 m² | +16 m² +23% | 2024 |
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| Flat 3, Bank Chambers, 84, Watling Street193 m away | 92 m² | 107 m² | +15 m² +16% | 2020 |
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| 8, Coningsby Court, The Dell439 m away | 50 m² | 65 m² | +15 m² +30% | 2020 |
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