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 N20 8EJ
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 |
|---|---|---|---|---|
| 2, Hadar Close305 m away | 518 m² | 940 m² | +422 m² +81% | 2009 |
| Woodlands, Pine Grove466 m away | 594 m² | 998 m² | +404 m² +68% | 2024 |
| 1, The Pastures789 m away | 218 m² | 512 m² | +294 m² +135% | 2014 |
| 18, Harmsworth Way408 m away | 388 m² | 660 m² | +272 m² +70% | 2020 |
| 9, The Pastures789 m away | 179 m² | 442 m² | +263 m² +147% | 2016 |
| 101, Greenway60 m away | 172 m² | 408 m² | +236 m² +137% | 2026 |
| 31, Harmsworth Way406 m away | 167 m² | 322 m² | +155 m² +93% | 2015 |
| 7, Framfield Close786 m away | 146 m² | 294 m² | +148 m² +101% | 2024 |
| 65, Southway324 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.
| 245 m² |
| +144 m² +143% |
| 2026 |
| 43, Greenway273 m away | 155 m² | 295 m² | +140 m² +90% | 2026 |
|---|
| 56, Greenway0 m away | 164 m² | 304 m² | +140 m² +85% | 2023 |
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| 5, Arlington776 m away | 149 m² | 283 m² | +134 m² +90% | 2019 |
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| 16, Lynton Mead334 m away | 109 m² | 240 m² | +131 m² +120% | 2025 |
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| 47, Pine Grove445 m away | 253 m² | 381 m² | +128 m² +51% | 2024 |
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| 27, Southway257 m away | 108 m² | 236 m² | +128 m² +119% | 2022 |
|---|
| 56, Northiam842 m away | 161 m² | 285 m² | +124 m² +77% | 2026 |
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| 20, Harmsworth Way408 m away | 333 m² | 456 m² | +123 m² +37% | 2026 |
|---|
| 12, Greenway376 m away | 104 m² | 227 m² | +123 m² +118% | 2024 |
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| 2, Willow End114 m away | 107 m² | 229 m² | +122 m² +114% | 2024 |
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| 56, Southway254 m away | 118 m² | 234 m² | +116 m² +98% | 2023 |
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| 4, Hill Crescent422 m away | 249 m² | 364 m² | +115 m² +46% | 2024 |
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| 84, Laurel Way466 m away | 88 m² | 202 m² | +114 m² +130% | 2026 |
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| 15, Rowben Close590 m away | 120 m² | 234 m² | +114 m² +95% | 2024 |
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| 82, Great Bushey Drive776 m away | 112 m² | 224 m² | +112 m² +100% | 2025 |
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| 92, Great Bushey Drive776 m away | 102 m² | 210 m² | +108 m² +106% | 2022 |
|---|
| 54, Longland Drive517 m away | 112 m² | 216 m² | +104 m² +93% | 2020 |
|---|
| 12, Northiam704 m away | 126 m² | 225 m² | +99 m² +79% | 2019 |
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| 1, Greenway462 m away | 136 m² | 232 m² | +96 m² +71% | 2020 |
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| 17, Great Bushey Drive723 m away | 93 m² | 187 m² | +94 m² +101% | 2022 |
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| 37, Greenway Close239 m away | 105 m² | 199 m² | +94 m² +90% | 2014 |
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| 15, Chiddingfold657 m away | 158 m² | 251 m² | +93 m² +59% | 2016 |
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| 13, Coppice Walk370 m away | 124 m² | 216 m² | +92 m² +74% | 2023 |
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| 21, Harmsworth Way406 m away | 280 m² | 370 m² | +90 m² +32% | 2025 |
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| Spindlewood, 62, Totteridge Village986 m away | 181 m² | 270 m² | +89 m² +49% | 2020 |
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| 44, Southover932 m away | 118 m² | 205 m² | +87 m² +74% | 2020 |
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| 49, Longland Drive560 m away | 113 m² | 196 m² | +83 m² +73% | 2022 |
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| 21, West Hill Way491 m away | 119 m² | 202 m² | +83 m² +70% | 2019 |
|---|
| 17, Totteridge Village643 m away | 322 m² | 404 m² | +82 m² +25% | 2022 |
|---|
| 58, Southway254 m away | 103 m² | 185 m² | +82 m² +80% | 2021 |
|---|
| 70, Lynton Mead334 m away | 98 m² | 178 m² | +80 m² +82% | 2024 |
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| 130, Longland Drive546 m away | 95 m² | 175 m² | +80 m² +84% | 2015 |
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| 53, Laurel Way608 m away | 110 m² | 190 m² | +80 m² +73% | 2014 |
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| 26, Southway254 m away | 105 m² | 185 m² | +80 m² +76% | 2011 |
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| 35, Greenway273 m away | 120 m² | 198 m² | +78 m² +65% | 2022 |
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| 92, Longland Drive546 m away | 108 m² | 186 m² | +78 m² +72% | 2022 |
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| 12, Hill Crescent422 m away | 137 m² | 214 m² | +77 m² +56% | 2025 |
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| 1, Great Bushey Drive723 m away | 98 m² | 173 m² | +75 m² +77% | 2022 |
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| 18, Greenway376 m away | 100 m² | 175 m² | +75 m² +75% | 2016 |
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| 59, Oak Tree Drive622 m away | 106 m² | 181 m² | +75 m² +71% | 2015 |
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| 12, Laurel View813 m away | 95 m² | 163 m² | +68 m² +72% | 2026 |
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| 96, Totteridge Lane600 m away | 122 m² | 190 m² | +68 m² +56% | 2021 |
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| 2, Oak Tree Drive657 m away | 110 m² | 178 m² | +68 m² +62% | 2019 |
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| 51, Northiam875 m away | 161 m² | 226 m² | +65 m² +40% | 2025 |
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| 16, Harmsworth Way408 m away | 238 m² | 303 m² | +65 m² +27% | 2014 |
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| 1, West Hill Way491 m away | 129 m² | 193 m² | +64 m² +50% | 2024 |
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| 67, Naylor Road843 m away | 147 m² | 210 m² | +63 m² +43% | 2025 |
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| 8, Laurel View813 m away | 100 m² | 163 m² | +63 m² +63% | 2022 |
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| 33, Ventnor Drive473 m away | 135 m² | 198 m² | +63 m² +47% | 2021 |
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| 77, Lynton Mead349 m away | 96 m² | 159 m² | +63 m² +66% | 2015 |
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| 88, Longland Drive546 m away | 125 m² | 187 m² | +62 m² +50% | 2022 |
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| 81, Lynton Mead349 m away | 107 m² | 168 m² | +61 m² +57% | 2026 |
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| 55, Southway257 m away | 136 m² | 195 m² | +59 m² +43% | 2017 |
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| 63, Northiam875 m away | 156 m² | 213 m² | +57 m² +37% | 2014 |
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| 18, Coppice Walk370 m away | 121 m² | 176 m² | +55 m² +45% | 2024 |
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| 7, Laurel Way719 m away | 111 m² | 166 m² | +55 m² +50% | 2020 |
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| 38, Oak Tree Drive657 m away | 113 m² | 168 m² | +55 m² +49% | 2013 |
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| 49, Northiam875 m away | 214 m² | 268 m² | +54 m² +25% | 2020 |
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| 62, Ventnor Drive450 m away | 98 m² | 150 m² | +52 m² +53% | 2021 |
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| 28, Birley Road940 m away | 103 m² | 154 m² | +51 m² +50% | 2025 |
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| 34, Birley Road940 m away | 99 m² | 150 m² | +51 m² +52% | 2021 |
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| 42, West Hill Way493 m away | 141 m² | 192 m² | +51 m² +36% | 2019 |
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| 58, Northiam842 m away | 118 m² | 169 m² | +51 m² +43% | 2014 |
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| 116, Longland Drive546 m away | 161 m² | 211 m² | +50 m² +31% | 2024 |
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| 61, Longland Drive560 m away | 126 m² | 176 m² | +50 m² +40% | 2015 |
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| 44, Laurel Way548 m away | 125 m² | 175 m² | +50 m² +40% | 2010 |
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| 123, Longland Drive584 m away | 120 m² | 169 m² | +49 m² +41% | 2016 |
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| 17, The Pastures789 m away | 240 m² | 288 m² | +48 m² +20% | 2015 |
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| 48, Pine Grove445 m away | 173 m² | 221 m² | +48 m² +28% | 2014 |
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| 24, Longland Drive517 m away | 173 m² | 220 m² | +47 m² +27% | 2021 |
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| 3, Arlington776 m away | 206 m² | 252 m² | +46 m² +22% | 2024 |
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| 47, Oak Tree Drive622 m away | 116 m² | 161 m² | +45 m² +39% | 2024 |
|---|
| 3, Shortgate932 m away | 131 m² | 175 m² | +44 m² +34% | 2026 |
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| 43, Totteridge Lane914 m away | 140 m² | 184 m² | +44 m² +31% | 2018 |
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| 103, Holden Road978 m away | 127 m² | 171 m² | +44 m² +35% | 2009 |
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| 33, Great Bushey Drive723 m away | 107 m² | 150 m² | +43 m² +40% | 2022 |
|---|
| 59, Birley Road908 m away | 94 m² | 135 m² | +41 m² +44% | 2020 |
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| 101, Longland Drive584 m away | 152 m² | 192 m² | +40 m² +26% | 2026 |
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| 109, Longland Drive584 m away | 168 m² | 207 m² | +39 m² +23% | 2026 |
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| 63, Ridgeview Road817 m away | 108 m² | 147 m² | +39 m² +36% | 2022 |
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| 1, Arlington776 m away | 238 m² | 277 m² | +39 m² +16% | 2015 |
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| 26, West Hill Way573 m away | 120 m² | 158 m² | +38 m² +32% | 2025 |
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| 27, Swan Lane999 m away | 58 m² | 95 m² | +37 m² +64% | 2016 |
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| 77, Totteridge Lane485 m away | 114 m² | 151 m² | +37 m² +32% | 2015 |
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| 5, Brook Meadow887 m away | 86 m² | 122 m² | +36 m² +42% | 2024 |
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| 24a, Greenway376 m away | 127 m² | 160 m² | +33 m² +26% | 2021 |
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| Flat 6, Brookmead Court, 62, Totteridge Lane801 m away | 85 m² | 118 m² | +33 m² +39% | 2020 |
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| 51, Swan Lane999 m away | 63 m² | 95 m² | +32 m² +51% | 2026 |
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| 40, Greenway Close209 m away | 117 m² | 149 m² | +32 m² +27% | 2021 |
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| Flat 8, Brookmead Court, 62, Totteridge Lane801 m away | 86 m² | 118 m² | +32 m² +37% | 2020 |
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| 39, Northiam775 m away | 125 m² | 157 m² | +32 m² +26% | 2018 |
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| 88, Laurel Way466 m away | 153 m² | 185 m² | +32 m² +21% | 2013 |
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| 22, Ventnor Drive506 m away | 106 m² | 136 m² | +30 m² +28% | 2024 |
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| 8, Ventnor Drive506 m away | 137 m² | 166 m² | +29 m² +21% | 2026 |
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| 3, Belmont Close517 m away | 158 m² | 186 m² | +28 m² +18% | 2023 |
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| 56, Ventnor Drive450 m away | 141 m² | 169 m² | +28 m² +20% | 2014 |
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| 67, Lynton Mead349 m away | 100 m² | 127 m² | +27 m² +27% | 2021 |
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| 28, West Hill Way573 m away | 134 m² | 161 m² | +27 m² +20% | 2015 |
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| 75, Southover697 m away | 162 m² | 188 m² | +26 m² +16% | 2022 |
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| 13, Laurel Way719 m away | 171 m² | 197 m² | +26 m² +15% | 2018 |
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| 18, Laurel View813 m away | 110 m² | 135 m² | +25 m² +23% | 2025 |
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| 52, Greenway0 m away | 154 m² | 179 m² | +25 m² +16% | 2015 |
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| 101, Laurel Way506 m away | 158 m² | 182 m² | +24 m² +15% | 2022 |
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| Flat 3, Brookmead Court, 62, Totteridge Lane801 m away | 42 m² | 66 m² | +24 m² +57% | 2020 |
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| 37, Northiam775 m away | 101 m² | 123 m² | +22 m² +22% | 2025 |
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| 9, Laurel Way719 m away | 117 m² | 139 m² | +22 m² +19% | 2020 |
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| 42, Great Bushey Drive776 m away | 109 m² | 129 m² | +20 m² +18% | 2024 |
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| 5, Birley Road908 m away | 94 m² | 114 m² | +20 m² +21% | 2019 |
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| 4, Laurel Way700 m away | 121 m² | 140 m² | +19 m² +16% | 2026 |
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| Flat 4, Brookmead Court, 62, Totteridge Lane801 m away | 47 m² | 66 m² | +19 m² +40% | 2020 |
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| 49, Birley Road908 m away | 95 m² | 114 m² | +19 m² +20% | 2013 |
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| Flat 1, Brookmead Court, 62, Totteridge Lane801 m away | 48 m² | 66 m² | +18 m² +38% | 2020 |
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| Flat 1, Holden Heights, 161, Holden Road818 m away | 72 m² | 89 m² | +17 m² +24% | 2026 |
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| 23, Birley Road908 m away | 80 m² | 97 m² | +17 m² +21% | 2022 |
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| 6, Ridgeview Road897 m away | 79 m² | 96 m² | +17 m² +22% | 2018 |
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| 42, Ridgeview Road897 m away | 106 m² | 123 m² | +17 m² +16% | 2011 |
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| Flat 7, Four Acres, 127, Holden Road919 m away | 45 m² | 60 m² | +15 m² +33% | 2024 |
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| 42, Swan Lane931 m away | 32 m² | 47 m² | +15 m² +47% | 2021 |
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