Finding extended homes…
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Sign in to keep them on every device →Finding extended homes…
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 BN1 3DJ
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 |
|---|---|---|---|---|
| 3, Kingscote Way897 m away | 137 m² | 336 m² | +199 m² +145% | 2025 |
| 111, Holland Road796 m away | 180 m² | 379 m² | +199 m² +111% | 2018 |
| 3, Windlesham Road281 m away | 181 m² | 326 m² | +145 m² +80% | 2016 |
| 71, Lyndhurst Road995 m away | 197 m² | 315 m² | +118 m² +60% | 2015 |
| 46, Sillwood Road342 m away | 78 m² | 193 m² | +115 m² +147% | 2012 |
| 9, Clifton Hill193 m away | 96 m² | 209 m² | +113 m² +118% | 2016 |
| 22, Brunswick Road453 m away | 168 m² | 273 m² | +105 m² +63% | 2011 |
| 30, Cambridge Road483 m away | 274 m² | 373 m² | +99 m² +36% | 2021 |
| 54, Davigdor Road537 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.
| 146 m² |
| 242 m² |
| +96 m² +66% |
| 2024 |
| 22, Buckingham Place626 m away | 94 m² | 188 m² | +94 m² +100% | 2015 |
|---|
| 10, Montpelier Terrace94 m away | 207 m² | 296 m² | +89 m² +43% | 2012 |
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| 13, Osmond Gardens391 m away | 70 m² | 157 m² | +87 m² +124% | 2010 |
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| Flat 3, 6, Stanford Road860 m away | 60 m² | 146 m² | +86 m² +143% | 2018 |
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| 99a, North Road865 m away | 95 m² | 179 m² | +84 m² +88% | 2020 |
|---|
| 18, Stanford Road860 m away | 191 m² | 270 m² | +79 m² +41% | 2024 |
|---|
| Flat 7, Palmeria House, 46, Palmeira Avenue915 m away | 74 m² | 149 m² | +75 m² +101% | 2017 |
|---|
| 40, Stanford Road860 m away | 189 m² | 263 m² | +74 m² +39% | 2023 |
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| 33, Lancaster Road876 m away | 115 m² | 188 m² | +73 m² +63% | 2014 |
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| 58, Compton Avenue527 m away | 113 m² | 185 m² | +72 m² +64% | 2023 |
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| 36, York Avenue317 m away | 272 m² | 342 m² | +70 m² +26% | 2021 |
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| 67, Lansdowne Street762 m away | 55 m² | 125 m² | +70 m² +127% | 2009 |
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| 93, Addison Road665 m away | 110 m² | 179 m² | +69 m² +63% | 2023 |
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| 26, Osmond Road391 m away | 257 m² | 325 m² | +68 m² +26% | 2013 |
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| 128, Holland Road909 m away | 101 m² | 166 m² | +65 m² +64% | 2019 |
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| 55, Old Shoreham Road784 m away | 59 m² | 124 m² | +65 m² +110% | 2011 |
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| 12, Stafford Road982 m away | 115 m² | 179 m² | +64 m² +56% | 2018 |
|---|
| Flat 2, Palmeira Plaza, 63, Holland Road813 m away | 73 m² | 137 m² | +64 m² +88% | 2013 |
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| 36, Stroudley Road931 m away | 74 m² | 135 m² | +61 m² +82% | 2011 |
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| 16, Bedford Place384 m away | 45 m² | 105 m² | +60 m² +133% | 2011 |
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| 97, Holland Road796 m away | 98 m² | 156 m² | +58 m² +59% | 2025 |
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| 8, Farm Road641 m away | 44 m² | 102 m² | +58 m² +132% | 2012 |
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| 2, Crown Gardens482 m away | 52 m² | 109 m² | +57 m² +110% | 2023 |
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| Flat 2, 10, Lansdowne Road860 m away | 188 m² | 245 m² | +57 m² +30% | 2013 |
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| 2, Norfolk Road322 m away | 56 m² | 112 m² | +56 m² +100% | 2015 |
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| 7, Howard Place666 m away | 51 m² | 107 m² | +56 m² +110% | 2008 |
|---|
| Flat 4, 50, Cambridge Road483 m away | 67 m² | 121 m² | +54 m² +81% | 2015 |
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| Flat 20, Avalon, West Street693 m away | 56 m² | 109 m² | +53 m² +95% | 2019 |
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| 5, Howard Place666 m away | 41 m² | 94 m² | +53 m² +129% | 2018 |
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| 48, Sillwood Street446 m away | 43 m² | 96 m² | +53 m² +123% | 2015 |
|---|
| 21, Powis Square123 m away | 50 m² | 102 m² | +52 m² +104% | 2021 |
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| 13, Clifton Terrace204 m away | 64 m² | 116 m² | +52 m² +81% | 2020 |
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| 44, Victoria Street74 m away | 94 m² | 146 m² | +52 m² +55% | 2014 |
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| Book House, 25, Marlborough Place935 m away | 45 m² | 96 m² | +51 m² +113% | 2023 |
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| First Floor Flat, 21, Alexandra Villas376 m away | 77 m² | 128 m² | +51 m² +66% | 2019 |
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| 2, Guildford Street525 m away | 58 m² | 109 m² | +51 m² +88% | 2010 |
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| 17, Stafford Road969 m away | 116 m² | 165 m² | +49 m² +42% | 2025 |
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| 5, Powis Road156 m away | 34 m² | 82 m² | +48 m² +141% | 2020 |
|---|
| Flat 4, 44, Brunswick Square722 m away | 48 m² | 96 m² | +48 m² +100% | 2019 |
|---|
| 13, Western Street533 m away | 36 m² | 84 m² | +48 m² +133% | 2017 |
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| 3, Clarence Square382 m away | 54 m² | 102 m² | +48 m² +89% | 2009 |
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| 27, Colbourne Road629 m away | 122 m² | 169 m² | +47 m² +39% | 2025 |
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| 25b, Buckingham Place640 m away | 63 m² | 109 m² | +46 m² +73% | 2022 |
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| 4, Highdown Road679 m away | 79 m² | 125 m² | +46 m² +58% | 2022 |
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| 39, Osmond Road531 m away | 176 m² | 222 m² | +46 m² +26% | 2021 |
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| 12, Montpelier Road385 m away | 76 m² | 122 m² | +46 m² +61% | 2019 |
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| 10, Wolstonbury Road774 m away | 126 m² | 172 m² | +46 m² +37% | 2013 |
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| 78, Lyndhurst Road889 m away | 65 m² | 111 m² | +46 m² +71% | 2012 |
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| 21, Stafford Road969 m away | 118 m² | 163 m² | +45 m² +38% | 2024 |
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| 20, Guildford Road558 m away | 42 m² | 87 m² | +45 m² +107% | 2023 |
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| 20, Montpelier Road385 m away | 50 m² | 95 m² | +45 m² +90% | 2016 |
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| 16, Abbotts, 129, Kings Road533 m away | 226 m² | 271 m² | +45 m² +20% | 2015 |
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| Ground Floor Flat, 14, Farm Road641 m away | 50 m² | 95 m² | +45 m² +90% | 2008 |
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| 4, Davigdor Road438 m away | 112 m² | 156 m² | +44 m² +39% | 2024 |
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| 115, Addison Road665 m away | 118 m² | 162 m² | +44 m² +37% | 2022 |
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| 22b, Dyke Road293 m away | 42 m² | 86 m² | +44 m² +105% | 2018 |
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| Flat 96, Embankment House, 7, Fleet Street866 m away | 78 m² | 122 m² | +44 m² +56% | 2015 |
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| Flat 1, 8, Somerhill Road641 m away | 45 m² | 88 m² | +43 m² +96% | 2020 |
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| 1, Brunswick Street West762 m away | 93 m² | 136 m² | +43 m² +46% | 2020 |
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| 16, Kew Street454 m away | 71 m² | 113 m² | +42 m² +59% | 2018 |
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| Flat 4, 6, Brunswick Square664 m away | 36 m² | 78 m² | +42 m² +117% | 2018 |
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| 2, Norfolk Square451 m away | 52 m² | 94 m² | +42 m² +81% | 2016 |
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| 41, Osmond Road531 m away | 165 m² | 207 m² | +42 m² +25% | 2010 |
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| 35a, Colbourne Road629 m away | 59 m² | 100 m² | +41 m² +69% | 2026 |
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| 23, Lansdowne Road739 m away | 85 m² | 126 m² | +41 m² +48% | 2023 |
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| 12a, Granville Road558 m away | 74 m² | 115 m² | +41 m² +55% | 2022 |
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| 30, Clifton Street614 m away | 100 m² | 141 m² | +41 m² +41% | 2021 |
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| 23, St Nicholas Road398 m away | 35 m² | 76 m² | +41 m² +117% | 2018 |
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| 1, Powis Road156 m away | 92 m² | 133 m² | +41 m² +45% | 2017 |
|---|
| Flat 4, 10, Montpelier Road385 m away | 30 m² | 70 m² | +40 m² +133% | 2026 |
|---|
| Flat 3, 22, Denmark Terrace187 m away | 28 m² | 68 m² | +40 m² +143% | 2024 |
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| 107, Addison Road665 m away | 45 m² | 85 m² | +40 m² +89% | 2018 |
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| 2, Caburn Road751 m away | 133 m² | 173 m² | +40 m² +30% | 2018 |
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| 92, Lyndhurst Road995 m away | 69 m² | 109 m² | +40 m² +58% | 2014 |
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| 77, Holland Road786 m away | 73 m² | 112 m² | +39 m² +53% | 2026 |
|---|
| 34, Lancaster Road876 m away | 117 m² | 156 m² | +39 m² +33% | 2024 |
|---|
| 14a, Cross Street482 m away | 75 m² | 114 m² | +39 m² +52% | 2023 |
|---|
| 29a, Norfolk Road295 m away | 45 m² | 84 m² | +39 m² +87% | 2019 |
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| Flat 1, 48, Buckingham Place626 m away | 29 m² | 68 m² | +39 m² +134% | 2019 |
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| 22, Rochester Close826 m away | 43 m² | 82 m² | +39 m² +91% | 2018 |
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| 3, York Grove763 m away | 37 m² | 76 m² | +39 m² +105% | 2013 |
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| 7, Western Road459 m away | 34 m² | 73 m² | +39 m² +115% | 2010 |
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| 49, Surrey Street589 m away | 105 m² | 144 m² | +39 m² +37% | 2010 |
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| 19, Stone Street277 m away | 46 m² | 84 m² | +38 m² +83% | 2025 |
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| 9, Howard Place666 m away | 45 m² | 83 m² | +38 m² +84% | 2025 |
|---|
| 63, Brunswick Street West762 m away | 98 m² | 136 m² | +38 m² +39% | 2024 |
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| Flat 3, 51, Montpelier Road205 m away | 43 m² | 81 m² | +38 m² +88% | 2023 |
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| Flat 8, 1, Adelaide Crescent962 m away | 40 m² | 78 m² | +38 m² +95% | 2023 |
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| 10, Park Royal, 66, Montpelier Road226 m away | 79 m² | 117 m² | +38 m² +48% | 2022 |
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| 94, Lyndhurst Road995 m away | 143 m² | 181 m² | +38 m² +27% | 2019 |
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| 4, Clarence Square382 m away | 53 m² | 91 m² | +38 m² +72% | 2017 |
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| 9, Old Shoreham Road784 m away | 91 m² | 129 m² | +38 m² +42% | 2014 |
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| 28, Buckingham Street509 m away | 43 m² | 81 m² | +38 m² +88% | 2012 |
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| 40, Regency Square391 m away | 39 m² | 77 m² | +38 m² +97% | 2010 |
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| 35, Lower Market Street616 m away | 116 m² | 154 m² | +38 m² +33% | 2010 |
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| 18, Western Street533 m away | 94 m² | 131 m² | +37 m² +39% | 2013 |
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| 36, Vernon Terrace429 m away | 51 m² | 88 m² | +37 m² +73% | 2011 |
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| 49, Brunswick Place595 m away | 85 m² | 122 m² | +37 m² +44% | 2009 |
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| 15, Wolstonbury Road774 m away | 122 m² | 158 m² | +36 m² +30% | 2020 |
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| 33, Lower Market Street616 m away | 42 m² | 78 m² | +36 m² +86% | 2018 |
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| Flat 88, Embankment House, 7, Fleet Street866 m away | 70 m² | 106 m² | +36 m² +51% | 2015 |
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| 16, Victoria Street53 m away | 84 m² | 120 m² | +36 m² +43% | 2012 |
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| 27, Queens Road521 m away | 58 m² | 94 m² | +36 m² +62% | 2010 |
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| 33, Montpelier Road385 m away | 44 m² | 79 m² | +35 m² +80% | 2024 |
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| 15, Buckingham Street509 m away | 127 m² | 162 m² | +35 m² +28% | 2024 |
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| Flat 2, 49, Brunswick Square767 m away | 54 m² | 89 m² | +35 m² +65% | 2023 |
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| 21, Tidy Street819 m away | 38 m² | 73 m² | +35 m² +92% | 2023 |
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| 3a, Bond Street774 m away | 138 m² | 173 m² | +35 m² +25% | 2022 |
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| 2d, Lansdowne Place789 m away | 149 m² | 184 m² | +35 m² +23% | 2020 |
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| 32, Cissbury Road828 m away | 180 m² | 215 m² | +35 m² +19% | 2017 |
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| 3, Bedford Place384 m away | 56 m² | 91 m² | +35 m² +63% | 2016 |
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| 56, Cambridge Road483 m away | 33 m² | 68 m² | +35 m² +106% | 2016 |
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| 7, Melville Road520 m away | 48 m² | 83 m² | +35 m² +73% | 2011 |
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| Flat 4, 55, Addison Road613 m away | 39 m² | 74 m² | +35 m² +90% | 2010 |
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| 3, St Michaels Place166 m away | 41 m² | 76 m² | +35 m² +85% | 2009 |
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| 10, Rochester Gardens868 m away | 113 m² | 147 m² | +34 m² +30% | 2025 |
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| 102, Addison Road648 m away | 111 m² | 145 m² | +34 m² +31% | 2024 |
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| Flat 5, 44, Brunswick Square722 m away | 91 m² | 125 m² | +34 m² +37% | 2024 |
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| 14, Kew Street454 m away | 98 m² | 132 m² | +34 m² +35% | 2023 |
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| 1, The Bungalows610 m away | 221 m² | 255 m² | +34 m² +15% | 2023 |
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| 1, Hamilton Road899 m away | 121 m² | 155 m² | +34 m² +28% | 2023 |
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| 7, Western Terrace289 m away | 153 m² | 187 m² | +34 m² +22% | 2019 |
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| 67b, Buckingham Road581 m away | 33 m² | 67 m² | +34 m² +103% | 2016 |
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| 7, Castle Street308 m away | 62 m² | 96 m² | +34 m² +55% | 2015 |
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| 67, Lyndhurst Road995 m away | 136 m² | 170 m² | +34 m² +25% | 2014 |
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| 12, Abbotts, 129, Kings Road533 m away | 112 m² | 146 m² | +34 m² +30% | 2013 |
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| 60, Old Shoreham Road802 m away | 41 m² | 75 m² | +34 m² +83% | 2012 |
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| 18, New England Road781 m away | 46 m² | 80 m² | +34 m² +74% | 2009 |
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| 5, Guildford Road525 m away | 68 m² | 101 m² | +33 m² +49% | 2024 |
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| 14, Wolstonbury Road774 m away | 146 m² | 179 m² | +33 m² +23% | 2024 |
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| 3, Old Shoreham Road784 m away | 60 m² | 93 m² | +33 m² +55% | 2024 |
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| 1, Stanford Road883 m away | 45 m² | 78 m² | +33 m² +73% | 2024 |
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| 34, Ferndale Road962 m away | 146 m² | 179 m² | +33 m² +23% | 2023 |
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| 79, Addison Road665 m away | 141 m² | 174 m² | +33 m² +23% | 2018 |
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| 38, Clifton Street614 m away | 84 m² | 117 m² | +33 m² +39% | 2017 |
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| 24, Chapel Mews570 m away | 63 m² | 96 m² | +33 m² +52% | 2016 |
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| 14, Holland Mews817 m away | 105 m² | 138 m² | +33 m² +31% | 2014 |
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| 84, Addison Road648 m away | 116 m² | 148 m² | +32 m² +28% | 2024 |
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| 23, Glendale Road921 m away | 132 m² | 164 m² | +32 m² +24% | 2022 |
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| Flat 6, 29, Brunswick Square595 m away | 46 m² | 78 m² | +32 m² +70% | 2020 |
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| 21, Holland Mews817 m away | 102 m² | 134 m² | +32 m² +31% | 2020 |
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| 33, Trafalgar Lane780 m away | 75 m² | 107 m² | +32 m² +43% | 2019 |
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| 52, Brunswick Place548 m away | 43 m² | 75 m² | +32 m² +74% | 2018 |
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| 40, Lansdowne Street736 m away | 37 m² | 69 m² | +32 m² +86% | 2016 |
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| Flat 3, The Red House, 21, Lansdowne Road739 m away | 138 m² | 170 m² | +32 m² +23% | 2016 |
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| 88, Lansdowne Place684 m away | 32 m² | 64 m² | +32 m² +100% | 2015 |
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| 2, Abbotts, 129, Kings Road533 m away | 96 m² | 128 m² | +32 m² +33% | 2013 |
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| 24, York Villas732 m away | 54 m² | 85 m² | +31 m² +57% | 2024 |
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| 7, York Grove763 m away | 104 m² | 135 m² | +31 m² +30% | 2019 |
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| 34, Waterloo Street522 m away | 40 m² | 71 m² | +31 m² +78% | 2016 |
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| 21, Brunswick Place608 m away | 45 m² | 76 m² | +31 m² +69% | 2010 |
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| 6, Caburn Road751 m away | 132 m² | 162 m² | +30 m² +23% | 2026 |
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| 2, Davigdor Road438 m away | 67 m² | 97 m² | +30 m² +45% | 2025 |
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| Flat 3, 29, Chatham Place601 m away | 33 m² | 63 m² | +30 m² +91% | 2013 |
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| Flat 2, 4, Compton Avenue430 m away | 36 m² | 65 m² | +29 m² +81% | 2026 |
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| 6, Regency Square446 m away | 54 m² | 83 m² | +29 m² +54% | 2025 |
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| 2a, Nile Street874 m away | 27 m² | 56 m² | +29 m² +107% | 2024 |
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| 23, Bath Street600 m away | 58 m² | 87 m² | +29 m² +50% | 2023 |
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| Flat 42, Gwydyr Mansions, Holland Road836 m away | 66 m² | 95 m² | +29 m² +44% | 2023 |
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| 25, Bedford Square473 m away | 23 m² | 52 m² | +29 m² +126% | 2009 |
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| 48, Upper North Street179 m away | 94 m² | 122 m² | +28 m² +30% | 2026 |
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| 1, Montpelier Road385 m away | 67 m² | 95 m² | +28 m² +42% | 2025 |
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| 20a, Sussex Heights498 m away | 89 m² | 117 m² | +28 m² +31% | 2024 |
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| 23, Old Shoreham Road784 m away | 95 m² | 123 m² | +28 m² +29% | 2024 |
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| 32, West Hill Road444 m away | 175 m² | 203 m² | +28 m² +16% | 2019 |
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| 5, Belmont Court656 m away | 83 m² | 111 m² | +28 m² +34% | 2019 |
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| Flat 5, 40, Brunswick Square722 m away | 49 m² | 77 m² | +28 m² +57% | 2019 |
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| 34, Brigden Street828 m away | 87 m² | 115 m² | +28 m² +32% | 2019 |
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| Flat 1, 3, Palmeira Avenue940 m away | 70 m² | 98 m² | +28 m² +40% | 2019 |
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| Flat 36, Sussex Court, Eaton Road989 m away | 56 m² | 84 m² | +28 m² +50% | 2014 |
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| 23, Cheltenham Place926 m away | 63 m² | 91 m² | +28 m² +44% | 2013 |
|---|
| 13, Lower Market Street616 m away | 37 m² | 65 m² | +28 m² +76% | 2011 |
|---|
| 30, Holland Road892 m away | 57 m² | 85 m² | +28 m² +49% | 2010 |
|---|
| Flat 4, 68, Buckingham Road469 m away | 54 m² | 81 m² | +27 m² +50% | 2024 |
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| 33, Old Shoreham Road784 m away | 88 m² | 115 m² | +27 m² +31% | 2024 |
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| 19, Portland Street646 m away | 48 m² | 75 m² | +27 m² +56% | 2023 |
|---|
| 16, Tidy Street819 m away | 100 m² | 127 m² | +27 m² +27% | 2022 |
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| 10, Kensington Place796 m away | 86 m² | 113 m² | +27 m² +31% | 2021 |
|---|
| 47, Sillwood Street446 m away | 112 m² | 139 m² | +27 m² +24% | 2020 |
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| 25, Brunswick Road453 m away | 56 m² | 83 m² | +27 m² +48% | 2020 |
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| Flat 2, 11, Compton Avenue443 m away | 64 m² | 91 m² | +27 m² +42% | 2019 |
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| 32a, Buckingham Street509 m away | 54 m² | 81 m² | +27 m² +50% | 2018 |
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| 20, Robert Street865 m away | 38 m² | 65 m² | +27 m² +71% | 2016 |
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| 21, Russell Square398 m away | 30 m² | 57 m² | +27 m² +90% | 2011 |
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| 107, Lansdowne Place717 m away | 43 m² | 70 m² | +27 m² +63% | 2009 |
|---|
| 72, Furze Croft, Furze Hill541 m away | 110 m² | 136 m² | +26 m² +24% | 2024 |
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| Flat 5, 2, Brunswick Square664 m away | 68 m² | 94 m² | +26 m² +38% | 2024 |
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| 22, Surrey Street573 m away | 45 m² | 71 m² | +26 m² +58% | 2023 |
|---|
| 26, New England Road781 m away | 76 m² | 102 m² | +26 m² +34% | 2021 |
|---|
| 25, Clarence Square382 m away | 43 m² | 69 m² | +26 m² +60% | 2018 |
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| 8, Crown Street221 m away | 56 m² | 82 m² | +26 m² +46% | 2015 |
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