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 1EA
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 |
|---|---|---|---|---|
| 111, Holland Road408 m away | 180 m² | 379 m² | +199 m² +111% | 2018 |
| 3, Windlesham Road643 m away | 181 m² | 326 m² | +145 m² +80% | 2016 |
| 5, Selborne Road534 m away | 134 m² | 271 m² | +137 m² +102% | 2020 |
| 71, Lyndhurst Road886 m away | 197 m² | 315 m² | +118 m² +60% | 2015 |
| 72, Cromwell Road798 m away | 83 m² | 199 m² | +116 m² +140% | 2022 |
| 46, Sillwood Road537 m away | 78 m² | 193 m² | +115 m² +147% | 2012 |
| 9, Clifton Hill796 m away | 96 m² | 209 m² | +113 m² +118% | 2016 |
| Flat 30, Victoria Court, 16, Grand Avenue743 m away | 124 m² | 231 m² | +107 m² +86% | 2026 |
| 22, Brunswick Road197 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.
| 168 m² |
| 273 m² |
| +105 m² +63% |
| 2011 |
| Flat 1, 10 - 11, Palmeira Square276 m away | 148 m² | 248 m² | +100 m² +68% | 2021 |
|---|
| 30, Cambridge Road176 m away | 274 m² | 373 m² | +99 m² +36% | 2021 |
|---|
| 54, Davigdor Road686 m away | 146 m² | 242 m² | +96 m² +66% | 2024 |
|---|
| 16, Kings Gardens896 m away | 102 m² | 194 m² | +92 m² +90% | 2011 |
|---|
| 10, Montpelier Terrace555 m away | 207 m² | 296 m² | +89 m² +43% | 2012 |
|---|
| 13, Osmond Gardens705 m away | 70 m² | 157 m² | +87 m² +124% | 2010 |
|---|
| 9, Copthorne Court, 44, The Drive792 m away | 86 m² | 170 m² | +84 m² +98% | 2023 |
|---|
| Flat 7, Palmeria House, 46, Palmeira Avenue573 m away | 74 m² | 149 m² | +75 m² +101% | 2017 |
|---|
| Basement Vault, 8, Kings Gardens861 m away | 72 m² | 146 m² | +74 m² +103% | 2023 |
|---|
| 4, Lorna Road835 m away | 80 m² | 150 m² | +70 m² +88% | 2025 |
|---|
| 36, York Avenue403 m away | 272 m² | 342 m² | +70 m² +26% | 2021 |
|---|
| 67, Lansdowne Street268 m away | 55 m² | 125 m² | +70 m² +127% | 2009 |
|---|
| 93, Addison Road846 m away | 110 m² | 179 m² | +69 m² +63% | 2023 |
|---|
| Flat 30, 4, Grand Avenue636 m away | 63 m² | 132 m² | +69 m² +110% | 2022 |
|---|
| 26, Osmond Road705 m away | 257 m² | 325 m² | +68 m² +26% | 2013 |
|---|
| 128, Holland Road670 m away | 101 m² | 166 m² | +65 m² +64% | 2019 |
|---|
| Flat 2, Palmeira Plaza, 63, Holland Road217 m away | 73 m² | 137 m² | +64 m² +88% | 2013 |
|---|
| Flat 2, Amberley Court, 22, Second Avenue558 m away | 78 m² | 140 m² | +62 m² +79% | 2016 |
|---|
| 50, Colbourne Road759 m away | 82 m² | 142 m² | +60 m² +73% | 2026 |
|---|
| 16, Bedford Place365 m away | 45 m² | 105 m² | +60 m² +133% | 2011 |
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| 12, Lorna Road835 m away | 60 m² | 120 m² | +60 m² +100% | 2009 |
|---|
| 44, Norfolk Square344 m away | 61 m² | 121 m² | +60 m² +98% | 2008 |
|---|
| Flat 2, 15, Kings Gardens896 m away | 68 m² | 127 m² | +59 m² +87% | 2019 |
|---|
| 97, Holland Road408 m away | 98 m² | 156 m² | +58 m² +59% | 2025 |
|---|
| 8, Farm Road138 m away | 44 m² | 102 m² | +58 m² +132% | 2012 |
|---|
| Flat 2, 10, Lansdowne Road364 m away | 188 m² | 245 m² | +57 m² +30% | 2013 |
|---|
| 2, Norfolk Road323 m away | 56 m² | 112 m² | +56 m² +100% | 2015 |
|---|
| 31, Albany Villas955 m away | 59 m² | 115 m² | +56 m² +95% | 2014 |
|---|
| Flat 5, Royal Court, 8, Kings Gardens861 m away | 133 m² | 189 m² | +56 m² +42% | 2011 |
|---|
| Flat 3, 24, First Avenue471 m away | 47 m² | 102 m² | +55 m² +117% | 2021 |
|---|
| 10, Salisbury Road472 m away | 38 m² | 93 m² | +55 m² +145% | 2017 |
|---|
| 34, Church Road631 m away | 39 m² | 94 m² | +55 m² +141% | 2011 |
|---|
| Flat 4, 50, Cambridge Road176 m away | 67 m² | 121 m² | +54 m² +81% | 2015 |
|---|
| 48, Sillwood Street358 m away | 43 m² | 96 m² | +53 m² +123% | 2015 |
|---|
| Flat 34, Ashdown, Eaton Road624 m away | 100 m² | 153 m² | +53 m² +53% | 2011 |
|---|
| Ground Floor West, 10, Grand Avenue631 m away | 83 m² | 135 m² | +52 m² +63% | 2024 |
|---|
| 21, Powis Square750 m away | 50 m² | 102 m² | +52 m² +104% | 2021 |
|---|
| 13, Clifton Terrace842 m away | 64 m² | 116 m² | +52 m² +81% | 2020 |
|---|
| 44, Victoria Street703 m away | 94 m² | 146 m² | +52 m² +55% | 2014 |
|---|
| 42d, Norton Road922 m away | 117 m² | 165 m² | +48 m² +41% | 2022 |
|---|
| 5, Powis Road730 m away | 34 m² | 82 m² | +48 m² +141% | 2020 |
|---|
| Flat 4, 44, Brunswick Square115 m away | 48 m² | 96 m² | +48 m² +100% | 2019 |
|---|
| 13, Western Street306 m away | 36 m² | 84 m² | +48 m² +133% | 2017 |
|---|
| 3, Clarence Square845 m away | 54 m² | 102 m² | +48 m² +89% | 2009 |
|---|
| 27, Colbourne Road786 m away | 122 m² | 169 m² | +47 m² +39% | 2025 |
|---|
| Flat 26, Grand Avenue Mansions, Grand Avenue719 m away | 65 m² | 112 m² | +47 m² +72% | 2019 |
|---|
| Flat 1, 15, Fourth Avenue870 m away | 127 m² | 174 m² | +47 m² +37% | 2014 |
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| 4, Highdown Road995 m away | 79 m² | 125 m² | +46 m² +58% | 2022 |
|---|
| 39, Osmond Road785 m away | 176 m² | 222 m² | +46 m² +26% | 2021 |
|---|
| 12, Montpelier Road421 m away | 76 m² | 122 m² | +46 m² +61% | 2019 |
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| 78, Lyndhurst Road847 m away | 65 m² | 111 m² | +46 m² +71% | 2012 |
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| Flat 7, 3, Third Avenue788 m away | 51 m² | 96 m² | +45 m² +88% | 2020 |
|---|
| 30b, Third Avenue831 m away | 85 m² | 130 m² | +45 m² +53% | 2017 |
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| 20, Montpelier Road421 m away | 50 m² | 95 m² | +45 m² +90% | 2016 |
|---|
| 16, Abbotts, 129, Kings Road771 m away | 226 m² | 271 m² | +45 m² +20% | 2015 |
|---|
| Ground Floor Flat, 14, Farm Road138 m away | 50 m² | 95 m² | +45 m² +90% | 2008 |
|---|
| 4, Davigdor Road800 m away | 112 m² | 156 m² | +44 m² +39% | 2024 |
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| 115, Addison Road846 m away | 118 m² | 162 m² | +44 m² +37% | 2022 |
|---|
| 22b, Dyke Road933 m away | 42 m² | 86 m² | +44 m² +105% | 2018 |
|---|
| 35, Tisbury Road874 m away | 63 m² | 107 m² | +44 m² +70% | 2011 |
|---|
| 1, Brunswick Street West147 m away | 93 m² | 136 m² | +43 m² +46% | 2020 |
|---|
| Flat 1, 8, Somerhill Road325 m away | 45 m² | 88 m² | +43 m² +96% | 2020 |
|---|
| Flat 8, 24, Second Avenue558 m away | 70 m² | 112 m² | +42 m² +60% | 2022 |
|---|
| Flat 4, 6, Brunswick Square209 m away | 36 m² | 78 m² | +42 m² +117% | 2018 |
|---|
| 2, Norfolk Square281 m away | 52 m² | 94 m² | +42 m² +81% | 2016 |
|---|
| 41, Osmond Road785 m away | 165 m² | 207 m² | +42 m² +25% | 2010 |
|---|
| 35a, Colbourne Road786 m away | 59 m² | 100 m² | +41 m² +69% | 2026 |
|---|
| 23, Lansdowne Road319 m away | 85 m² | 126 m² | +41 m² +48% | 2023 |
|---|
| 12a, Granville Road891 m away | 74 m² | 115 m² | +41 m² +55% | 2022 |
|---|
| 1, Powis Road730 m away | 92 m² | 133 m² | +41 m² +45% | 2017 |
|---|
| Flat 5, 62, The Drive860 m away | 65 m² | 106 m² | +41 m² +63% | 2013 |
|---|
| Flat 4, 10, Montpelier Road421 m away | 30 m² | 70 m² | +40 m² +133% | 2026 |
|---|
| Flat 3, 22, Denmark Terrace670 m away | 28 m² | 68 m² | +40 m² +143% | 2024 |
|---|
| 107, Addison Road846 m away | 45 m² | 85 m² | +40 m² +89% | 2018 |
|---|
| 92, Lyndhurst Road886 m away | 69 m² | 109 m² | +40 m² +58% | 2014 |
|---|
| 77, Holland Road257 m away | 73 m² | 112 m² | +39 m² +53% | 2026 |
|---|
| 14a, Cross Street223 m away | 75 m² | 114 m² | +39 m² +52% | 2023 |
|---|
| 29a, Norfolk Road350 m away | 45 m² | 84 m² | +39 m² +87% | 2019 |
|---|
| 22, Rochester Close342 m away | 43 m² | 82 m² | +39 m² +91% | 2018 |
|---|
| 7, Western Road206 m away | 34 m² | 73 m² | +39 m² +115% | 2010 |
|---|
| 19, Stone Street671 m away | 46 m² | 84 m² | +38 m² +83% | 2025 |
|---|
| 63, Brunswick Street West147 m away | 98 m² | 136 m² | +38 m² +39% | 2024 |
|---|
| Flat 8, 1, Adelaide Crescent329 m away | 40 m² | 78 m² | +38 m² +95% | 2023 |
|---|
| Flat 3, 51, Montpelier Road455 m away | 43 m² | 81 m² | +38 m² +88% | 2023 |
|---|
| 10, Park Royal, 66, Montpelier Road449 m away | 79 m² | 117 m² | +38 m² +48% | 2022 |
|---|
| 94, Lyndhurst Road886 m away | 143 m² | 181 m² | +38 m² +27% | 2019 |
|---|
| 4, Clarence Square845 m away | 53 m² | 91 m² | +38 m² +72% | 2017 |
|---|
| 3, Kings Mews767 m away | 78 m² | 116 m² | +38 m² +49% | 2013 |
|---|
| 35, Lower Market Street193 m away | 116 m² | 154 m² | +38 m² +33% | 2010 |
|---|
| 40, Regency Square737 m away | 39 m² | 77 m² | +38 m² +97% | 2010 |
|---|
| Flat 4, 10, Eaton Road937 m away | 60 m² | 97 m² | +37 m² +62% | 2024 |
|---|
| 19, Norton Road931 m away | 61 m² | 98 m² | +37 m² +61% | 2016 |
|---|
| 18, Western Street306 m away | 94 m² | 131 m² | +37 m² +39% | 2013 |
|---|
| 36, Vernon Terrace907 m away | 51 m² | 88 m² | +37 m² +73% | 2011 |
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| 49, Brunswick Place184 m away | 85 m² | 122 m² | +37 m² +44% | 2009 |
|---|
| 80, Church Road951 m away | 43 m² | 79 m² | +36 m² +84% | 2026 |
|---|
| 33, Lower Market Street193 m away | 42 m² | 78 m² | +36 m² +86% | 2018 |
|---|
| Flat 4, 16, First Avenue471 m away | 50 m² | 86 m² | +36 m² +72% | 2015 |
|---|
| 16, Victoria Street684 m away | 84 m² | 120 m² | +36 m² +43% | 2012 |
|---|
| Flat 1, 21, Third Avenue788 m away | 100 m² | 135 m² | +35 m² +35% | 2024 |
|---|
| Flat 2, 49, Brunswick Square189 m away | 54 m² | 89 m² | +35 m² +65% | 2023 |
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| 2d, Lansdowne Place159 m away | 149 m² | 184 m² | +35 m² +23% | 2020 |
|---|
| Flat 5, 55, The Drive885 m away | 56 m² | 91 m² | +35 m² +63% | 2019 |
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| 32, Cissbury Road978 m away | 180 m² | 215 m² | +35 m² +19% | 2017 |
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| 56, Cambridge Road176 m away | 33 m² | 68 m² | +35 m² +106% | 2016 |
|---|
| 3, Bedford Place365 m away | 56 m² | 91 m² | +35 m² +63% | 2016 |
|---|
| 7, Melville Road946 m away | 48 m² | 83 m² | +35 m² +73% | 2011 |
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| 3, St Michaels Place689 m away | 41 m² | 76 m² | +35 m² +85% | 2009 |
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| 10, Rochester Gardens330 m away | 113 m² | 147 m² | +34 m² +30% | 2025 |
|---|
| Flat 5, 44, Brunswick Square115 m away | 91 m² | 125 m² | +34 m² +37% | 2024 |
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| 102, Addison Road814 m away | 111 m² | 145 m² | +34 m² +31% | 2024 |
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| 1, The Bungalows335 m away | 221 m² | 255 m² | +34 m² +15% | 2023 |
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| 7, Western Terrace484 m away | 153 m² | 187 m² | +34 m² +22% | 2019 |
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| Flat 3, 35, First Avenue508 m away | 36 m² | 70 m² | +34 m² +94% | 2019 |
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| 7, Castle Street681 m away | 62 m² | 96 m² | +34 m² +55% | 2015 |
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| 67, Lyndhurst Road886 m away | 136 m² | 170 m² | +34 m² +25% | 2014 |
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| 12, Abbotts, 129, Kings Road771 m away | 112 m² | 146 m² | +34 m² +30% | 2013 |
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| 34, Ferndale Road940 m away | 146 m² | 179 m² | +33 m² +23% | 2023 |
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| Flat 2, Gainsborough House, 4 - 6, Eaton Gardens945 m away | 89 m² | 122 m² | +33 m² +37% | 2023 |
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| 79, Addison Road846 m away | 141 m² | 174 m² | +33 m² +23% | 2018 |
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| 24, Chapel Mews296 m away | 63 m² | 96 m² | +33 m² +52% | 2016 |
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| 83, Church Road619 m away | 30 m² | 63 m² | +33 m² +110% | 2016 |
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| 14, Holland Mews173 m away | 105 m² | 138 m² | +33 m² +31% | 2014 |
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| 84, Addison Road814 m away | 116 m² | 148 m² | +32 m² +28% | 2024 |
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| 23, Glendale Road938 m away | 132 m² | 164 m² | +32 m² +24% | 2022 |
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| Flat 6, 29, Brunswick Square90 m away | 46 m² | 78 m² | +32 m² +70% | 2020 |
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| 21, Holland Mews173 m away | 102 m² | 134 m² | +32 m² +31% | 2020 |
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| 52, Brunswick Place189 m away | 43 m² | 75 m² | +32 m² +74% | 2018 |
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| 40, Lansdowne Street241 m away | 37 m² | 69 m² | +32 m² +86% | 2016 |
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| Flat 3, The Red House, 21, Lansdowne Road319 m away | 138 m² | 170 m² | +32 m² +23% | 2016 |
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| 88, Lansdowne Place156 m away | 32 m² | 64 m² | +32 m² +100% | 2015 |
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| 2, Abbotts, 129, Kings Road771 m away | 96 m² | 128 m² | +32 m² +33% | 2013 |
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| Flat 1, 35, Adelaide Crescent453 m away | 123 m² | 154 m² | +31 m² +25% | 2026 |
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| Flat 6, 62, The Drive860 m away | 92 m² | 123 m² | +31 m² +34% | 2026 |
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| 33, Fourth Avenue862 m away | 47 m² | 78 m² | +31 m² +66% | 2020 |
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| 34, Waterloo Street171 m away | 40 m² | 71 m² | +31 m² +78% | 2016 |
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| 63, Hova Villas986 m away | 27 m² | 58 m² | +31 m² +115% | 2015 |
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| 21, Brunswick Place95 m away | 45 m² | 76 m² | +31 m² +69% | 2010 |
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| 2, Davigdor Road800 m away | 67 m² | 97 m² | +30 m² +45% | 2025 |
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| Flat 4, 53, The Drive885 m away | 99 m² | 129 m² | +30 m² +30% | 2023 |
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| 69, Brunswick Place184 m away | 48 m² | 78 m² | +30 m² +63% | 2010 |
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| 6, Regency Square648 m away | 54 m² | 83 m² | +29 m² +54% | 2025 |
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| Flat 42, Gwydyr Mansions, Holland Road269 m away | 66 m² | 95 m² | +29 m² +44% | 2023 |
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| Flat 4, 2, Selborne Road510 m away | 75 m² | 104 m² | +29 m² +39% | 2018 |
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| Flat 2, 57, The Drive885 m away | 106 m² | 135 m² | +29 m² +27% | 2014 |
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| 92, Cromwell Road798 m away | 67 m² | 96 m² | +29 m² +43% | 2011 |
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| 48, Upper North Street747 m away | 94 m² | 122 m² | +28 m² +30% | 2026 |
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| 1, Montpelier Road421 m away | 67 m² | 95 m² | +28 m² +42% | 2025 |
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| Flat 8, 5, Second Avenue593 m away | 36 m² | 64 m² | +28 m² +78% | 2024 |
|---|
| 20a, Sussex Heights808 m away | 89 m² | 117 m² | +28 m² +31% | 2024 |
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| Flat 1, 58, The Drive817 m away | 120 m² | 148 m² | +28 m² +23% | 2023 |
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| Flat 5, 26, Cromwell Road967 m away | 42 m² | 70 m² | +28 m² +67% | 2022 |
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| Flat 3, 19, Salisbury Road472 m away | 134 m² | 162 m² | +28 m² +21% | 2021 |
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| Flat 5, 40, Brunswick Square115 m away | 49 m² | 77 m² | +28 m² +57% | 2019 |
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| Flat 1, 3, Palmeira Avenue394 m away | 70 m² | 98 m² | +28 m² +40% | 2019 |
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| Flat 36, Sussex Court, Eaton Road561 m away | 56 m² | 84 m² | +28 m² +50% | 2014 |
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| 24, Castle Street681 m away | 46 m² | 74 m² | +28 m² +61% | 2012 |
|---|
| 13, Lower Market Street193 m away | 37 m² | 65 m² | +28 m² +76% | 2011 |
|---|
| 30, Holland Road248 m away | 57 m² | 85 m² | +28 m² +49% | 2010 |
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| 30, Norton Road895 m away | 28 m² | 56 m² | +28 m² +100% | 2009 |
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| 25, Brunswick Road197 m away | 56 m² | 83 m² | +27 m² +48% | 2020 |
|---|
| 47, Sillwood Street358 m away | 112 m² | 139 m² | +27 m² +24% | 2020 |
|---|
| 21, Russell Square806 m away | 30 m² | 57 m² | +27 m² +90% | 2011 |
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| Flat 5, 2, Brunswick Square209 m away | 68 m² | 94 m² | +26 m² +38% | 2024 |
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| 72, Furze Croft, Furze Hill379 m away | 110 m² | 136 m² | +26 m² +24% | 2024 |
|---|
| 20, Church Road631 m away | 38 m² | 64 m² | +26 m² +68% | 2018 |
|---|
| 25, Clarence Square845 m away | 43 m² | 69 m² | +26 m² +60% | 2018 |
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| 34, Temple Street417 m away | 146 m² | 172 m² | +26 m² +18% | 2015 |
|---|
| 8, Crown Street751 m away | 56 m² | 82 m² | +26 m² +46% | 2015 |
|---|
| Flat 97, Ashdown, Eaton Road624 m away | 65 m² | 91 m² | +26 m² +40% | 2014 |
|---|
| Flat B3, Hatfield Court, 35, Salisbury Road447 m away | 56 m² | 82 m² | +26 m² +46% | 2013 |
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| Flat A3, Hatfield Court, 35, Salisbury Road447 m away | 56 m² | 82 m² | +26 m² +46% | 2013 |
|---|
| 55a, Brunswick Square189 m away | 36 m² | 62 m² | +26 m² +72% | 2009 |
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| 31, Norfolk Road350 m away | 45 m² | 71 m² | +26 m² +58% | 2009 |
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| 103, Wick Hall, Furze Hill311 m away | 82 m² | 107 m² | +25 m² +30% | 2025 |
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| Flat 1, 13, First Avenue530 m away | 147 m² | 172 m² | +25 m² +17% | 2025 |
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| Flat 1, Palmeira Grande, Holland Road199 m away | 102 m² | 127 m² | +25 m² +25% | 2024 |
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| Flat 3, 25, Lansdowne Place148 m away | 50 m² | 75 m² | +25 m² +50% | 2022 |
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| 29a, St Michaels Place716 m away | 73 m² | 98 m² | +25 m² +34% | 2022 |
|---|
| 23, Embassy Court, Kings Road340 m away | 108 m² | 133 m² | +25 m² +23% | 2021 |
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| 122a, Kings Road771 m away | 27 m² | 52 m² | +25 m² +93% | 2021 |
|---|
| 34a, Dyke Road951 m away | 95 m² | 120 m² | +25 m² +26% | 2020 |
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| 6, Montpelier Crescent800 m away | 55 m² | 80 m² | +25 m² +45% | 2019 |
|---|
| 5a, Goldsmid Road944 m away | 51 m² | 76 m² | +25 m² +49% | 2018 |
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| Flat 4, 1, Adelaide Crescent329 m away | 101 m² | 126 m² | +25 m² +25% | 2011 |
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| Flat 6, 34, Brunswick Square35 m away | 57 m² | 81 m² | +24 m² +42% | 2024 |
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| Flat 6, 15, Brunswick Place95 m away | 42 m² | 66 m² | +24 m² +57% | 2022 |
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| Flat 7, Rochester Mansions, 7 - 9, Church Road285 m away | 109 m² | 133 m² | +24 m² +22% | 2021 |
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| Flat 2, 11, Powis Grove855 m away | 53 m² | 77 m² | +24 m² +45% | 2018 |
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| Flat 5, 1, Third Avenue788 m away | 75 m² | 99 m² | +24 m² +32% | 2017 |
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| 8, Lorna Road835 m away | 19 m² | 43 m² | +24 m² +126% | 2016 |
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