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 BN3 3BF
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 |
|---|---|---|---|---|
| 31, Old Shoreham Road919 m away | 208 m² | 470 m² | +262 m² +126% | 2019 |
| 111, Holland Road714 m away | 180 m² | 379 m² | +199 m² +111% | 2018 |
| 6, Princes Crescent860 m away | 283 m² | 466 m² | +183 m² +65% | 2022 |
| Flat 1, 99, The Drive744 m away | 117 m² | 269 m² | +152 m² +130% | 2024 |
| 12, Wilbury Gardens809 m away | 125 m² | 272 m² | +147 m² +118% | 2026 |
| 5, Selborne Road420 m away | 134 m² | 271 m² | +137 m² +102% | 2020 |
| 32, Wilbury Gardens809 m away | 158 m² | 291 m² | +133 m² +84% | 2011 |
| 71, Lyndhurst Road917 m away | 197 m² | 315 m² | +118 m² +60% | 2015 |
| 72, Cromwell Road599 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.
| 83 m² |
| 199 m² |
| +116 m² +140% |
| 2022 |
| Flat 30, Victoria Court, 16, Grand Avenue455 m away | 124 m² | 231 m² | +107 m² +86% | 2026 |
|---|
| 18, Denmark Villas289 m away | 179 m² | 285 m² | +106 m² +59% | 2020 |
|---|
| 106, The Drive809 m away | 389 m² | 481 m² | +92 m² +24% | 2024 |
|---|
| 22, Wilbury Avenue659 m away | 165 m² | 257 m² | +92 m² +56% | 2019 |
|---|
| 16, Kings Gardens541 m away | 102 m² | 194 m² | +92 m² +90% | 2011 |
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| 36, Medina Villas384 m away | 422 m² | 510 m² | +88 m² +21% | 2022 |
|---|
| 55, Pembroke Crescent761 m away | 91 m² | 177 m² | +86 m² +95% | 2016 |
|---|
| 9, Copthorne Court, 44, The Drive167 m away | 86 m² | 170 m² | +84 m² +98% | 2023 |
|---|
| 38, New Church Road834 m away | 172 m² | 254 m² | +82 m² +48% | 2019 |
|---|
| 23, Wilbury Gardens777 m away | 247 m² | 326 m² | +79 m² +32% | 2016 |
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| 44, Old Shoreham Road873 m away | 137 m² | 215 m² | +78 m² +57% | 2021 |
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| 31, Clarendon Villas447 m away | 74 m² | 152 m² | +78 m² +105% | 2012 |
|---|
| 18a, Hove Park Villas824 m away | 135 m² | 211 m² | +76 m² +56% | 2025 |
|---|
| Flat 7, Palmeria House, 46, Palmeira Avenue650 m away | 74 m² | 149 m² | +75 m² +101% | 2017 |
|---|
| Basement Vault, 8, Kings Gardens539 m away | 72 m² | 146 m² | +74 m² +103% | 2023 |
|---|
| 18, Rutland Gardens989 m away | 203 m² | 277 m² | +74 m² +36% | 2016 |
|---|
| 10, The Upper Drive727 m away | 239 m² | 311 m² | +72 m² +30% | 2016 |
|---|
| Flat 31, Grasshoppers, 87, The Drive705 m away | 62 m² | 134 m² | +72 m² +116% | 2014 |
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| 4, Lorna Road717 m away | 80 m² | 150 m² | +70 m² +88% | 2025 |
|---|
| 67, Lansdowne Street744 m away | 55 m² | 125 m² | +70 m² +127% | 2009 |
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| Flat 30, 4, Grand Avenue480 m away | 63 m² | 132 m² | +69 m² +110% | 2022 |
|---|
| 12, The Upper Drive727 m away | 167 m² | 235 m² | +68 m² +41% | 2021 |
|---|
| 5, Byron Street725 m away | 74 m² | 140 m² | +66 m² +89% | 2026 |
|---|
| 32, Hove Park Villas824 m away | 210 m² | 275 m² | +65 m² +31% | 2020 |
|---|
| 128, Holland Road750 m away | 101 m² | 166 m² | +65 m² +64% | 2019 |
|---|
| 82, Old Shoreham Road952 m away | 194 m² | 259 m² | +65 m² +34% | 2016 |
|---|
| 41, Cowper Street771 m away | 93 m² | 157 m² | +64 m² +69% | 2019 |
|---|
| Flat 2, Palmeira Plaza, 63, Holland Road737 m away | 73 m² | 137 m² | +64 m² +88% | 2013 |
|---|
| 118, Portland Road911 m away | 57 m² | 120 m² | +63 m² +111% | 2021 |
|---|
| 206, Church Road505 m away | 51 m² | 114 m² | +63 m² +124% | 2016 |
|---|
| 84, Sackville Road634 m away | 119 m² | 181 m² | +62 m² +52% | 2017 |
|---|
| Flat 2, Amberley Court, 22, Second Avenue581 m away | 78 m² | 140 m² | +62 m² +79% | 2016 |
|---|
| 29, Denmark Villas327 m away | 186 m² | 247 m² | +61 m² +33% | 2026 |
|---|
| 16, Brooker Street454 m away | 64 m² | 125 m² | +61 m² +95% | 2021 |
|---|
| 42, Fonthill Road904 m away | 75 m² | 136 m² | +61 m² +81% | 2021 |
|---|
| 11, Hove Street745 m away | 131 m² | 192 m² | +61 m² +47% | 2014 |
|---|
| 29, Landseer Road999 m away | 100 m² | 160 m² | +60 m² +60% | 2015 |
|---|
| 12, Lorna Road717 m away | 60 m² | 120 m² | +60 m² +100% | 2009 |
|---|
| 27, Cambridge Grove554 m away | 105 m² | 164 m² | +59 m² +56% | 2023 |
|---|
| Flat 2, 15, Kings Gardens541 m away | 68 m² | 127 m² | +59 m² +87% | 2019 |
|---|
| 97, Holland Road714 m away | 98 m² | 156 m² | +58 m² +59% | 2025 |
|---|
| 8, Farm Road884 m away | 44 m² | 102 m² | +58 m² +132% | 2012 |
|---|
| 24, Rutland Gardens989 m away | 180 m² | 237 m² | +57 m² +32% | 2020 |
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| 214, Church Road505 m away | 54 m² | 111 m² | +57 m² +106% | 2019 |
|---|
| 18, Hova Villas143 m away | 49 m² | 106 m² | +57 m² +116% | 2014 |
|---|
| 35, Seafield Road403 m away | 170 m² | 227 m² | +57 m² +34% | 2014 |
|---|
| Flat 2, 10, Lansdowne Road641 m away | 188 m² | 245 m² | +57 m² +30% | 2013 |
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| 88, Old Shoreham Road952 m away | 159 m² | 215 m² | +56 m² +35% | 2025 |
|---|
| 32, Hova Villas143 m away | 126 m² | 182 m² | +56 m² +44% | 2023 |
|---|
| 31, Albany Villas345 m away | 59 m² | 115 m² | +56 m² +95% | 2014 |
|---|
| Flat 5, Royal Court, 8, Kings Gardens539 m away | 133 m² | 189 m² | +56 m² +42% | 2011 |
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| Flat 3, 24, First Avenue630 m away | 47 m² | 102 m² | +55 m² +117% | 2021 |
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| 10, Salisbury Road496 m away | 38 m² | 93 m² | +55 m² +145% | 2017 |
|---|
| 34, Church Road373 m away | 39 m² | 94 m² | +55 m² +141% | 2011 |
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| 8, Osborne Villas526 m away | 98 m² | 153 m² | +55 m² +56% | 2011 |
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| 53, Ventnor Villas159 m away | 48 m² | 103 m² | +55 m² +115% | 2009 |
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| 97, Sackville Road605 m away | 55 m² | 109 m² | +54 m² +98% | 2025 |
|---|
| 1, Goldstone Road344 m away | 50 m² | 104 m² | +54 m² +108% | 2023 |
|---|
| 151, Westbourne Street910 m away | 38 m² | 92 m² | +54 m² +142% | 2019 |
|---|
| 14, Aymer Road699 m away | 204 m² | 257 m² | +53 m² +26% | 2022 |
|---|
| 21, Vallance Road506 m away | 68 m² | 121 m² | +53 m² +78% | 2021 |
|---|
| 55, Fonthill Road885 m away | 116 m² | 169 m² | +53 m² +46% | 2019 |
|---|
| 2, Hova Villas143 m away | 53 m² | 106 m² | +53 m² +100% | 2015 |
|---|
| 91, St Aubyns416 m away | 75 m² | 128 m² | +53 m² +71% | 2013 |
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| Flat 34, Ashdown, Eaton Road461 m away | 100 m² | 153 m² | +53 m² +53% | 2011 |
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| Ground Floor West, 10, Grand Avenue400 m away | 83 m² | 135 m² | +52 m² +63% | 2024 |
|---|
| 120, Shirley Street494 m away | 83 m² | 135 m² | +52 m² +63% | 2020 |
|---|
| 20, Denmark Villas289 m away | 66 m² | 118 m² | +52 m² +79% | 2011 |
|---|
| 12, Connaught Terrace362 m away | 104 m² | 155 m² | +51 m² +49% | 2023 |
|---|
| 7, Hartington Villas771 m away | 152 m² | 203 m² | +51 m² +34% | 2021 |
|---|
| 7, Clarendon Villas294 m away | 211 m² | 262 m² | +51 m² +24% | 2018 |
|---|
| 48, Livingstone Road431 m away | 44 m² | 95 m² | +51 m² +116% | 2014 |
|---|
| 28, Viceroy Lodge, 143, Kingsway848 m away | 84 m² | 134 m² | +50 m² +60% | 2014 |
|---|
| 27, Viceroy Lodge, 143, Kingsway848 m away | 84 m² | 134 m² | +50 m² +60% | 2014 |
|---|
| 15, Fonthill Road885 m away | 123 m² | 172 m² | +49 m² +40% | 2025 |
|---|
| 19, Connaught Terrace362 m away | 108 m² | 157 m² | +49 m² +45% | 2023 |
|---|
| Flat 7, Vallance Court, Hove Street628 m away | 91 m² | 140 m² | +49 m² +54% | 2020 |
|---|
| 28, Brooker Street454 m away | 103 m² | 152 m² | +49 m² +48% | 2018 |
|---|
| 27, Pembroke Avenue655 m away | 96 m² | 144 m² | +48 m² +50% | 2023 |
|---|
| 42d, Norton Road41 m away | 117 m² | 165 m² | +48 m² +41% | 2022 |
|---|
| Flat 4, 44, Brunswick Square964 m away | 48 m² | 96 m² | +48 m² +100% | 2019 |
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| 24, Brooker Street454 m away | 98 m² | 145 m² | +47 m² +48% | 2026 |
|---|
| 39, Sackville Road503 m away | 194 m² | 241 m² | +47 m² +24% | 2022 |
|---|
| 14, Denmark Mews440 m away | 129 m² | 176 m² | +47 m² +36% | 2020 |
|---|
| Flat 26, Grand Avenue Mansions, Grand Avenue334 m away | 65 m² | 112 m² | +47 m² +72% | 2019 |
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| 13, Oxford Mews459 m away | 72 m² | 119 m² | +47 m² +65% | 2019 |
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| 61, Goldstone Road475 m away | 43 m² | 90 m² | +47 m² +109% | 2019 |
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| 27, Bigwood Avenue893 m away | 115 m² | 162 m² | +47 m² +41% | 2016 |
|---|
| Flat 1, 15, Fourth Avenue444 m away | 127 m² | 174 m² | +47 m² +37% | 2014 |
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| 37, Brooker Street454 m away | 110 m² | 156 m² | +46 m² +42% | 2025 |
|---|
| 4, Osborne Villas526 m away | 55 m² | 101 m² | +46 m² +84% | 2023 |
|---|
| 28, Pembroke Crescent717 m away | 175 m² | 221 m² | +46 m² +26% | 2023 |
|---|
| Flat 1, 16, Sackville Road561 m away | 46 m² | 92 m² | +46 m² +100% | 2021 |
|---|
| 44, Belfast Street335 m away | 85 m² | 131 m² | +46 m² +54% | 2019 |
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| 188a, Church Road505 m away | 46 m² | 92 m² | +46 m² +100% | 2019 |
|---|
| 67, Cowper Street771 m away | 86 m² | 132 m² | +46 m² +53% | 2018 |
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| 140, Sackville Road898 m away | 52 m² | 98 m² | +46 m² +88% | 2018 |
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| 40, Wordsworth Street783 m away | 60 m² | 105 m² | +45 m² +75% | 2024 |
|---|
| Flat 7, 3, Third Avenue462 m away | 51 m² | 96 m² | +45 m² +88% | 2020 |
|---|
| 30b, Third Avenue381 m away | 85 m² | 130 m² | +45 m² +53% | 2017 |
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| 14, Goldstone Villas277 m away | 58 m² | 103 m² | +45 m² +78% | 2016 |
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| Ground Floor Flat, 14, Farm Road884 m away | 50 m² | 95 m² | +45 m² +90% | 2008 |
|---|
| 63, Westbourne Street813 m away | 39 m² | 83 m² | +44 m² +113% | 2010 |
|---|
| 20, Hove Park Villas824 m away | 188 m² | 231 m² | +43 m² +23% | 2024 |
|---|
| 14, Connaught Terrace362 m away | 107 m² | 150 m² | +43 m² +40% | 2022 |
|---|
| Flat 4, 57, Pembroke Crescent761 m away | 33 m² | 76 m² | +43 m² +130% | 2020 |
|---|
| Flat 1, 8, Somerhill Road864 m away | 45 m² | 88 m² | +43 m² +96% | 2020 |
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| 1, Brunswick Street West943 m away | 93 m² | 136 m² | +43 m² +46% | 2020 |
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| 20, Medina Villas350 m away | 62 m² | 105 m² | +43 m² +69% | 2019 |
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| Flat 8, 24, Second Avenue581 m away | 70 m² | 112 m² | +42 m² +60% | 2022 |
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| 66, Denmark Villas497 m away | 63 m² | 105 m² | +42 m² +67% | 2020 |
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| 18d, Clarendon Villas285 m away | 49 m² | 91 m² | +42 m² +86% | 2019 |
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| 80, Goldstone Villas499 m away | 58 m² | 100 m² | +42 m² +72% | 2019 |
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| 5b, Cambridge Grove554 m away | 83 m² | 125 m² | +42 m² +51% | 2018 |
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| 23, Lansdowne Road761 m away | 85 m² | 126 m² | +41 m² +48% | 2023 |
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| 67, Westbourne Street813 m away | 44 m² | 85 m² | +41 m² +93% | 2019 |
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| Flat 5, 62, The Drive308 m away | 65 m² | 106 m² | +41 m² +63% | 2013 |
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| 33, St Johns Road611 m away | 42 m² | 83 m² | +41 m² +98% | 2009 |
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| 36, Stirling Place419 m away | 93 m² | 133 m² | +40 m² +43% | 2023 |
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| 4, Cornwall Court, Wilbury Avenue677 m away | 33 m² | 73 m² | +40 m² +121% | 2023 |
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| Telecommunication Room, 133, Kingsway720 m away | 57 m² | 97 m² | +40 m² +70% | 2020 |
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| 12, Haddington Street218 m away | 85 m² | 125 m² | +40 m² +47% | 2019 |
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| 57, Montgomery Street803 m away | 77 m² | 117 m² | +40 m² +52% | 2019 |
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| Flat 26, Veric, 16 - 18, Eaton Gardens332 m away | 41 m² | 81 m² | +40 m² +98% | 2015 |
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| 92, Lyndhurst Road917 m away | 69 m² | 109 m² | +40 m² +58% | 2014 |
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| Flat 1, 40, Medina Villas524 m away | 35 m² | 75 m² | +40 m² +114% | 2010 |
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| 77, Holland Road728 m away | 73 m² | 112 m² | +39 m² +53% | 2026 |
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| Flat 2, 51, Clarendon Villas447 m away | 44 m² | 83 m² | +39 m² +89% | 2023 |
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| Flat 3, 74, Denmark Villas497 m away | 69 m² | 108 m² | +39 m² +57% | 2022 |
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| 34, Coleridge Street812 m away | 78 m² | 117 m² | +39 m² +50% | 2020 |
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| 22, Rochester Close675 m away | 43 m² | 82 m² | +39 m² +91% | 2018 |
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| 34, Belfast Street335 m away | 90 m² | 129 m² | +39 m² +43% | 2016 |
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| 78, Byron Street838 m away | 27 m² | 66 m² | +39 m² +144% | 2009 |
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| 7, Shakespeare Street826 m away | 90 m² | 128 m² | +38 m² +42% | 2024 |
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| 63, Brunswick Street West943 m away | 98 m² | 136 m² | +38 m² +39% | 2024 |
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| Flat 8, 1, Adelaide Crescent833 m away | 40 m² | 78 m² | +38 m² +95% | 2023 |
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| 120, Sackville Road898 m away | 115 m² | 153 m² | +38 m² +33% | 2022 |
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| 16, Connaught Terrace362 m away | 104 m² | 142 m² | +38 m² +37% | 2020 |
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| 94, Lyndhurst Road917 m away | 143 m² | 181 m² | +38 m² +27% | 2019 |
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| Flat 33, Viceroy Lodge, 143, Kingsway848 m away | 96 m² | 134 m² | +38 m² +40% | 2014 |
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| 3, Kings Mews330 m away | 78 m² | 116 m² | +38 m² +49% | 2013 |
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| 67, Livingstone Road543 m away | 26 m² | 64 m² | +38 m² +146% | 2013 |
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| Flat 4, 10, Eaton Road82 m away | 60 m² | 97 m² | +37 m² +62% | 2024 |
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| 40, Belfast Street335 m away | 87 m² | 124 m² | +37 m² +43% | 2024 |
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| Flat 2, Aynsley Court, Wilbury Avenue714 m away | 52 m² | 89 m² | +37 m² +71% | 2024 |
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| 19, Norton Road108 m away | 61 m² | 98 m² | +37 m² +61% | 2016 |
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| 170, Westbourne Street910 m away | 39 m² | 76 m² | +37 m² +95% | 2016 |
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| 49, Brunswick Place915 m away | 85 m² | 122 m² | +37 m² +44% | 2009 |
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| 80, Church Road268 m away | 43 m² | 79 m² | +36 m² +84% | 2026 |
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| 34, Brooker Street454 m away | 105 m² | 141 m² | +36 m² +34% | 2026 |
|---|
| 26, Prinsep Road921 m away | 111 m² | 147 m² | +36 m² +32% | 2025 |
|---|
| Flat 5, 51, Clarendon Villas447 m away | 44 m² | 80 m² | +36 m² +82% | 2023 |
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| 38, Landseer Road999 m away | 110 m² | 146 m² | +36 m² +33% | 2022 |
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| 114, Shirley Street494 m away | 95 m² | 131 m² | +36 m² +38% | 2017 |
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| Flat 4, 16, First Avenue630 m away | 50 m² | 86 m² | +36 m² +72% | 2015 |
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| 116, Clarendon Road564 m away | 90 m² | 125 m² | +35 m² +39% | 2026 |
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| 27, Fonthill Road885 m away | 113 m² | 148 m² | +35 m² +31% | 2025 |
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| Flat 1, 21, Third Avenue462 m away | 100 m² | 135 m² | +35 m² +35% | 2024 |
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| 86, Westbourne Street877 m away | 88 m² | 123 m² | +35 m² +40% | 2023 |
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| Flat 2, 49, Brunswick Square992 m away | 54 m² | 89 m² | +35 m² +65% | 2023 |
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| 2d, Lansdowne Place904 m away | 149 m² | 184 m² | +35 m² +23% | 2020 |
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| Flat 5, 55, The Drive228 m away | 56 m² | 91 m² | +35 m² +63% | 2019 |
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| 28, Connaught Terrace362 m away | 107 m² | 142 m² | +35 m² +33% | 2019 |
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| Flat 13, Tennyson Court, Byron Street689 m away | 85 m² | 120 m² | +35 m² +41% | 2019 |
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| 54b, Stirling Place419 m away | 66 m² | 101 m² | +35 m² +53% | 2018 |
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| 18, Shakespeare Street826 m away | 83 m² | 118 m² | +35 m² +42% | 2016 |
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| 46, Newtown Road711 m away | 90 m² | 125 m² | +35 m² +39% | 2014 |
|---|
| 9, Goldstone Villas251 m away | 36 m² | 71 m² | +35 m² +97% | 2013 |
|---|
| 5, Goldstone Road344 m away | 51 m² | 86 m² | +35 m² +69% | 2011 |
|---|
| 7, Hove Street745 m away | 119 m² | 154 m² | +35 m² +29% | 2009 |
|---|
| 67, Wilbury Crescent976 m away | 139 m² | 173 m² | +34 m² +24% | 2026 |
|---|
| 10, Rochester Gardens644 m away | 113 m² | 147 m² | +34 m² +30% | 2025 |
|---|
| Flat 5, 44, Brunswick Square964 m away | 91 m² | 125 m² | +34 m² +37% | 2024 |
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| 1, The Bungalows896 m away | 221 m² | 255 m² | +34 m² +15% | 2023 |
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| 20, Connaught Terrace362 m away | 108 m² | 142 m² | +34 m² +31% | 2022 |
|---|
| 66, Byron Street838 m away | 47 m² | 81 m² | +34 m² +72% | 2022 |
|---|
| 33, Old Shoreham Road919 m away | 73 m² | 107 m² | +34 m² +47% | 2021 |
|---|
| 57, Shakespeare Street826 m away | 89 m² | 123 m² | +34 m² +38% | 2020 |
|---|
| 15, Prinsep Road921 m away | 103 m² | 137 m² | +34 m² +33% | 2020 |
|---|
| Flat 3, 35, First Avenue524 m away | 36 m² | 70 m² | +34 m² +94% | 2019 |
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| 129, Livingstone Road543 m away | 51 m² | 85 m² | +34 m² +67% | 2015 |
|---|
| 67, Lyndhurst Road917 m away | 136 m² | 170 m² | +34 m² +25% | 2014 |
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| 2, Pembroke Avenue655 m away | 195 m² | 229 m² | +34 m² +17% | 2012 |
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| Flat 2, 20, Cromwell Road504 m away | 69 m² | 103 m² | +34 m² +49% | 2011 |
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| 26, Sackville Road543 m away | 117 m² | 150 m² | +33 m² +28% | 2024 |
|---|
| 103, Sackville Road605 m away | 136 m² | 169 m² | +33 m² +24% | 2024 |
|---|
| Flat 2, Gainsborough House, 4 - 6, Eaton Gardens180 m away | 89 m² | 122 m² | +33 m² +37% | 2023 |
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| Flat 1, 51, Clarendon Villas447 m away | 50 m² | 83 m² | +33 m² +66% | 2023 |
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| 62, Shirley Street494 m away | 81 m² | 114 m² | +33 m² +41% | 2022 |
|---|
| 12, Landseer Road999 m away | 112 m² | 145 m² | +33 m² +29% | 2022 |
|---|
| 33, Denmark Villas327 m away | 98 m² | 131 m² | +33 m² +34% | 2020 |
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