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 7GX
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 |
|---|---|---|---|---|
| 34, Newlands Avenue358 m away | 284 m² | 635 m² | +351 m² +124% | 2025 |
| 36, Newlands Avenue358 m away | 313 m² | 648 m² | +335 m² +107% | 2021 |
| 37, The Avenue443 m away | 214 m² | 516 m² | +302 m² +141% | 2025 |
| 28, Watford Road789 m away | 343 m² | 645 m² | +302 m² +88% | 2023 |
| 50, Newlands Avenue358 m away | 210 m² | 477 m² | +267 m² +127% | 2023 |
| 67, Goodyers Avenue239 m away | 179 m² | 383 m² | +204 m² +114% | 2010 |
| 4a, Beech Avenue257 m away | 159 m² | 335 m² | +176 m² +111% | 2012 |
| 15, Shenley Hill875 m away | 299 m² | 470 m² | +171 m² +57% | 2020 |
| Briarwood, The Warren639 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.
| 378 m² |
| +155 m² +70% |
| 2019 |
| 52, Links Drive225 m away | 132 m² | 285 m² | +153 m² +116% | 2025 |
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| 1a, The Drive536 m away | 220 m² | 359 m² | +139 m² +63% | 2023 |
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| 11, Medow Mead276 m away | 148 m² | 285 m² | +137 m² +93% | 2025 |
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| 32, Beech Avenue257 m away | 122 m² | 249 m² | +127 m² +104% | 2015 |
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| 14, Mornington Road618 m away | 113 m² | 237 m² | +124 m² +110% | 2020 |
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| 1, Radlett Park Road720 m away | 210 m² | 328 m² | +118 m² +56% | 2017 |
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| 33, Gills Hill992 m away | 168 m² | 282 m² | +114 m² +68% | 2018 |
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| 9, The Avenue691 m away | 365 m² | 478 m² | +113 m² +31% | 2016 |
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| 36, Oakridge Avenue263 m away | 109 m² | 219 m² | +110 m² +101% | 2015 |
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| 23, Shenley Hill893 m away | 154 m² | 262 m² | +108 m² +70% | 2020 |
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| 4, Regents Close429 m away | 141 m² | 247 m² | +106 m² +75% | 2021 |
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| Hazelwood, The Warren396 m away | 182 m² | 286 m² | +104 m² +57% | 2019 |
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| 7, The Close382 m away | 89 m² | 189 m² | +100 m² +112% | 2022 |
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| 20, The Grove413 m away | 156 m² | 256 m² | +100 m² +64% | 2020 |
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| 30, Newlands Avenue358 m away | 390 m² | 488 m² | +98 m² +25% | 2020 |
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| 11, Links Drive120 m away | 98 m² | 186 m² | +88 m² +90% | 2024 |
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| 12, Scrubbitts Park Road985 m away | 60 m² | 148 m² | +88 m² +147% | 2019 |
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| 4, Kitswell Way179 m away | 92 m² | 175 m² | +83 m² +90% | 2026 |
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| 63, Oakridge Avenue279 m away | 156 m² | 239 m² | +83 m² +53% | 2026 |
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| Station House, Shenley Hill818 m away | 141 m² | 224 m² | +83 m² +59% | 2016 |
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| 56, Links Drive225 m away | 107 m² | 177 m² | +70 m² +65% | 2016 |
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| Waverley, Hillside Road734 m away | 86 m² | 155 m² | +69 m² +80% | 2026 |
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| 9, The Close382 m away | 96 m² | 165 m² | +69 m² +72% | 2021 |
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| 5, Highbridge Close80 m away | 64 m² | 132 m² | +68 m² +106% | 2009 |
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| 26, Shenley Hill928 m away | 172 m² | 239 m² | +67 m² +39% | 2025 |
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| 57, Goodyers Avenue239 m away | 87 m² | 154 m² | +67 m² +77% | 2023 |
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| Glenhurst, Beech Avenue251 m away | 116 m² | 177 m² | +61 m² +53% | 2018 |
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| Hawthorns, The Warren396 m away | 272 m² | 331 m² | +59 m² +22% | 2012 |
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| 4, Scrubbitts Park Road985 m away | 93 m² | 150 m² | +57 m² +61% | 2018 |
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| 24, Watling Street535 m away | 109 m² | 165 m² | +56 m² +51% | 2025 |
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| 18, The Close382 m away | 115 m² | 168 m² | +53 m² +46% | 2021 |
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| 10, Links Drive90 m away | 96 m² | 148 m² | +52 m² +54% | 2024 |
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| 6, Station Road710 m away | 103 m² | 155 m² | +52 m² +50% | 2019 |
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| 2, Beech Avenue257 m away | 214 m² | 264 m² | +50 m² +23% | 2025 |
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| 3, The Crosspath987 m away | 203 m² | 252 m² | +49 m² +24% | 2025 |
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| 8, Lodge End532 m away | 174 m² | 223 m² | +49 m² +28% | 2022 |
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| 54, Links Drive225 m away | 108 m² | 156 m² | +48 m² +44% | 2025 |
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| 3, Hill Croft467 m away | 270 m² | 318 m² | +48 m² +18% | 2024 |
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| 14, The Close382 m away | 61 m² | 108 m² | +47 m² +77% | 2022 |
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| 19, Links Drive120 m away | 129 m² | 176 m² | +47 m² +36% | 2012 |
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| 7, Highbridge Close80 m away | 136 m² | 182 m² | +46 m² +34% | 2021 |
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| Chase Lodge, Gills Hill Lane952 m away | 285 m² | 329 m² | +44 m² +15% | 2017 |
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| 6a, Aldenham Grove781 m away | 254 m² | 297 m² | +43 m² +17% | 2022 |
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| 19, The Avenue443 m away | 185 m² | 227 m² | +42 m² +23% | 2025 |
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| 2a, Beech Avenue257 m away | 168 m² | 210 m² | +42 m² +25% | 2019 |
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| 11, Park Road598 m away | 89 m² | 130 m² | +41 m² +46% | 2026 |
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| 24, The Grove413 m away | 159 m² | 200 m² | +41 m² +26% | 2025 |
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| 7, Watling Knoll391 m away | 174 m² | 214 m² | +40 m² +23% | 2026 |
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| 2, Aldenham Road790 m away | 85 m² | 123 m² | +38 m² +45% | 2012 |
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| 15, Park Road598 m away | 101 m² | 138 m² | +37 m² +37% | 2024 |
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| 12, Aldenham Road790 m away | 96 m² | 133 m² | +37 m² +39% | 2021 |
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| 1, The Close382 m away | 148 m² | 184 m² | +36 m² +24% | 2026 |
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| 75, The Crosspath839 m away | 86 m² | 122 m² | +36 m² +42% | 2017 |
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| 27, Radlett Park Road720 m away | 107 m² | 143 m² | +36 m² +34% | 2016 |
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| Fourways, Upper Station Road773 m away | 136 m² | 167 m² | +31 m² +23% | 2018 |
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| 1, Links Drive120 m away | 96 m² | 126 m² | +30 m² +31% | 2014 |
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| 43, Park Road598 m away | 148 m² | 177 m² | +29 m² +20% | 2025 |
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| 6, Gills Hill879 m away | 93 m² | 122 m² | +29 m² +31% | 2025 |
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| 39, Station Road736 m away | 79 m² | 106 m² | +27 m² +34% | 2025 |
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| 1, The Heath256 m away | 173 m² | 200 m² | +27 m² +16% | 2023 |
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| 28, Watling Street535 m away | 95 m² | 122 m² | +27 m² +28% | 2022 |
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| 7, Upper Station Road773 m away | 101 m² | 128 m² | +27 m² +27% | 2017 |
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| 97, Brook Court47 m away | 73 m² | 99 m² | +26 m² +36% | 2024 |
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| Flat 9, Slade Court, Watling Street906 m away | 46 m² | 70 m² | +24 m² +52% | 2025 |
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| 25, Station Road736 m away | 70 m² | 93 m² | +23 m² +33% | 2024 |
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| 22, Upper Station Road755 m away | 72 m² | 95 m² | +23 m² +32% | 2013 |
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| 1, Hill Croft467 m away | 120 m² | 141 m² | +21 m² +18% | 2025 |
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| 18, The Heath256 m away | 139 m² | 160 m² | +21 m² +15% | 2014 |
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| 3, Upper Station Road773 m away | 104 m² | 124 m² | +20 m² +19% | 2021 |
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| 4, Aldenham Road790 m away | 88 m² | 107 m² | +19 m² +22% | 2025 |
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| 30, Station Road710 m away | 65 m² | 83 m² | +18 m² +28% | 2026 |
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| 251, Watling Street805 m away | 30 m² | 48 m² | +18 m² +60% | 2019 |
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| 18, Station Road710 m away | 71 m² | 88 m² | +17 m² +24% | 2016 |
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| 5, Station Road736 m away | 69 m² | 85 m² | +16 m² +23% | 2024 |
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| Flat 3, Bank Chambers, 84, Watling Street911 m away | 92 m² | 107 m² | +15 m² +16% | 2020 |
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