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 4QQ
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 |
|---|---|---|---|---|
| 5, Western Esplanade656 m away | 132 m² | 268 m² | +136 m² +103% | 2024 |
| 5, Tandridge Road661 m away | 89 m² | 206 m² | +117 m² +131% | 2014 |
| 4a, Mansfield Road668 m away | 90 m² | 203 m² | +113 m² +126% | 2020 |
| 3, Tandridge Road661 m away | 83 m² | 182 m² | +99 m² +119% | 2022 |
| 237, New Church Road130 m away | 106 m² | 204 m² | +98 m² +92% | 2015 |
| 303, Kingsway707 m away | 125 m² | 222 m² | +97 m² +78% | 2021 |
| 5, Portland Avenue712 m away | 81 m² | 175 m² | +94 m² +116% | 2017 |
| 13, St Keyna Avenue262 m away | 143 m² | 235 m² | +92 m² +64% | 2024 |
| 15, Gladys Road627 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.
| 112 m² |
| 200 m² |
| +88 m² +79% |
| 2025 |
| 368, Old Shoreham Road805 m away | 115 m² | 201 m² | +86 m² +75% | 2019 |
|---|
| 33, Coleman Avenue940 m away | 137 m² | 220 m² | +83 m² +61% | 2022 |
|---|
| 16, Welbeck Avenue957 m away | 159 m² | 236 m² | +77 m² +48% | 2025 |
|---|
| 40, Welbeck Avenue930 m away | 149 m² | 226 m² | +77 m² +52% | 2019 |
|---|
| 21, Portland Villas465 m away | 85 m² | 162 m² | +77 m² +91% | 2016 |
|---|
| 9, Tandridge Road661 m away | 77 m² | 154 m² | +77 m² +100% | 2014 |
|---|
| 25, St Richards Road780 m away | 77 m² | 153 m² | +76 m² +99% | 2013 |
|---|
| 14, Wish Road889 m away | 60 m² | 134 m² | +74 m² +123% | 2025 |
|---|
| 24, St Leonards Gardens166 m away | 80 m² | 153 m² | +73 m² +91% | 2025 |
|---|
| 39, Leicester Villas266 m away | 159 m² | 232 m² | +73 m² +46% | 2024 |
|---|
| 10, Glastonbury Road367 m away | 117 m² | 190 m² | +73 m² +62% | 2024 |
|---|
| Flat 2, 36, Station Road148 m away | 61 m² | 132 m² | +71 m² +116% | 2019 |
|---|
| 11, Portland Villas465 m away | 88 m² | 158 m² | +70 m² +80% | 2017 |
|---|
| 27, Jesmond Road647 m away | 109 m² | 177 m² | +68 m² +62% | 2023 |
|---|
| 77, St Andrews Road450 m away | 109 m² | 172 m² | +63 m² +58% | 2026 |
|---|
| 25, Links Road577 m away | 86 m² | 149 m² | +63 m² +73% | 2020 |
|---|
| 33, Jesmond Road647 m away | 93 m² | 156 m² | +63 m² +68% | 2015 |
|---|
| 36, Rothbury Road523 m away | 98 m² | 159 m² | +61 m² +62% | 2024 |
|---|
| 25, Portland Villas465 m away | 114 m² | 175 m² | +61 m² +54% | 2020 |
|---|
| 27, St Keyna Avenue262 m away | 106 m² | 167 m² | +61 m² +58% | 2011 |
|---|
| 27, Gordon Road321 m away | 68 m² | 128 m² | +60 m² +88% | 2020 |
|---|
| 76, St Leonards Gardens166 m away | 108 m² | 168 m² | +60 m² +56% | 2016 |
|---|
| 12, Welbeck Avenue957 m away | 134 m² | 193 m² | +59 m² +44% | 2026 |
|---|
| 3, Brittany Road457 m away | 83 m² | 142 m² | +59 m² +71% | 2018 |
|---|
| 110, Victoria Road735 m away | 80 m² | 139 m² | +59 m² +74% | 2015 |
|---|
| 11, Victoria Road459 m away | 40 m² | 98 m² | +58 m² +145% | 2012 |
|---|
| 3, Portland Villas465 m away | 104 m² | 162 m² | +58 m² +56% | 2012 |
|---|
| 9, Worcester Villas259 m away | 56 m² | 113 m² | +57 m² +102% | 2021 |
|---|
| 154a, New Church Road746 m away | 152 m² | 208 m² | +56 m² +37% | 2022 |
|---|
| 22, Tennis Road806 m away | 89 m² | 144 m² | +55 m² +62% | 2022 |
|---|
| 24, Wish Road889 m away | 78 m² | 133 m² | +55 m² +71% | 2020 |
|---|
| 326, Portland Road675 m away | 98 m² | 153 m² | +55 m² +56% | 2014 |
|---|
| 38, Portland Avenue760 m away | 109 m² | 163 m² | +54 m² +50% | 2021 |
|---|
| 23, Portland Avenue792 m away | 129 m² | 183 m² | +54 m² +42% | 2017 |
|---|
| 1, St Andrews Road276 m away | 126 m² | 180 m² | +54 m² +43% | 2016 |
|---|
| 15, Middleton Avenue322 m away | 124 m² | 177 m² | +53 m² +43% | 2012 |
|---|
| 50, Mansfield Road668 m away | 123 m² | 174 m² | +51 m² +41% | 2025 |
|---|
| 14, Saxon Road592 m away | 156 m² | 207 m² | +51 m² +33% | 2020 |
|---|
| 44, St Leonards Gardens166 m away | 79 m² | 129 m² | +50 m² +63% | 2023 |
|---|
| 14, St Keyna Avenue227 m away | 108 m² | 158 m² | +50 m² +46% | 2016 |
|---|
| 37, Mansfield Road719 m away | 56 m² | 105 m² | +49 m² +88% | 2025 |
|---|
| 297, Kingsway818 m away | 50 m² | 99 m² | +49 m² +98% | 2022 |
|---|
| 58, St Keyna Avenue227 m away | 103 m² | 152 m² | +49 m² +48% | 2016 |
|---|
| 46, St Leonards Gardens166 m away | 77 m² | 126 m² | +49 m² +64% | 2015 |
|---|
| 197, New Church Road232 m away | 178 m² | 227 m² | +49 m² +28% | 2012 |
|---|
| 411, Portland Road421 m away | 102 m² | 149 m² | +47 m² +46% | 2020 |
|---|
| 206, New Church Road337 m away | 113 m² | 160 m² | +47 m² +42% | 2016 |
|---|
| 51, Trafalgar Road833 m away | 75 m² | 121 m² | +46 m² +61% | 2026 |
|---|
| 47, Eastbrook Road664 m away | 73 m² | 119 m² | +46 m² +63% | 2025 |
|---|
| 9, Benfield Way854 m away | 107 m² | 153 m² | +46 m² +43% | 2024 |
|---|
| 65, St Leonards Road162 m away | 46 m² | 92 m² | +46 m² +100% | 2016 |
|---|
| 38, Woodhouse Road836 m away | 64 m² | 110 m² | +46 m² +72% | 2014 |
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| 72, Vale Road449 m away | 53 m² | 98 m² | +45 m² +85% | 2026 |
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| 9, Links Road577 m away | 78 m² | 123 m² | +45 m² +58% | 2026 |
|---|
| 15, St Keyna Avenue262 m away | 131 m² | 176 m² | +45 m² +34% | 2018 |
|---|
| 21, Glebe Villas381 m away | 108 m² | 153 m² | +45 m² +42% | 2016 |
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| 83, St Leonards Road0 m away | 88 m² | 133 m² | +45 m² +51% | 2015 |
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| 8, Margery Road702 m away | 93 m² | 137 m² | +44 m² +47% | 2025 |
|---|
| 71, St Leonards Gardens192 m away | 91 m² | 135 m² | +44 m² +48% | 2024 |
|---|
| 1, Welbeck Avenue989 m away | 176 m² | 220 m² | +44 m² +25% | 2021 |
|---|
| 165, New Church Road633 m away | 131 m² | 175 m² | +44 m² +34% | 2013 |
|---|
| 54, Trafalgar Road851 m away | 40 m² | 84 m² | +44 m² +110% | 2011 |
|---|
| 52, Brittany Road424 m away | 155 m² | 198 m² | +43 m² +28% | 2024 |
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| 8, Roman Road501 m away | 117 m² | 160 m² | +43 m² +37% | 2024 |
|---|
| 52, St Leonards Gardens166 m away | 83 m² | 126 m² | +43 m² +52% | 2017 |
|---|
| 5, Brittany Road457 m away | 98 m² | 140 m² | +42 m² +43% | 2023 |
|---|
| 3, Woodhouse Road856 m away | 135 m² | 177 m² | +42 m² +31% | 2023 |
|---|
| 41, Derek Avenue387 m away | 123 m² | 165 m² | +42 m² +34% | 2012 |
|---|
| 29, Brittany Road457 m away | 112 m² | 154 m² | +42 m² +38% | 2012 |
|---|
| 51, St Andrews Road276 m away | 56 m² | 98 m² | +42 m² +75% | 2011 |
|---|
| 340, Portland Road675 m away | 96 m² | 137 m² | +41 m² +43% | 2026 |
|---|
| 16, Church Road565 m away | 93 m² | 134 m² | +41 m² +44% | 2023 |
|---|
| 19, Norman Road746 m away | 53 m² | 94 m² | +41 m² +77% | 2023 |
|---|
| 158, New Church Road746 m away | 191 m² | 231 m² | +40 m² +21% | 2021 |
|---|
| 8b, Marine Avenue670 m away | 72 m² | 112 m² | +40 m² +56% | 2020 |
|---|
| 16, Park Avenue986 m away | 174 m² | 213 m² | +39 m² +22% | 2025 |
|---|
| 6, Glendor Road834 m away | 113 m² | 152 m² | +39 m² +35% | 2013 |
|---|
| 31, Portland Villas465 m away | 138 m² | 177 m² | +39 m² +28% | 2012 |
|---|
| 145, St Leonards Avenue84 m away | 90 m² | 128 m² | +38 m² +42% | 2024 |
|---|
| 26, Boundary Road105 m away | 46 m² | 84 m² | +38 m² +83% | 2020 |
|---|
| 11, Elm Road884 m away | 54 m² | 92 m² | +38 m² +70% | 2019 |
|---|
| 32, St Andrews Road224 m away | 42 m² | 80 m² | +38 m² +90% | 2015 |
|---|
| 22, Shelldale Road868 m away | 97 m² | 134 m² | +37 m² +38% | 2026 |
|---|
| 28, Erroll Road140 m away | 37 m² | 74 m² | +37 m² +100% | 2021 |
|---|
| 212, New Church Road337 m away | 122 m² | 159 m² | +37 m² +30% | 2019 |
|---|
| 1, Kenton Road294 m away | 149 m² | 186 m² | +37 m² +25% | 2013 |
|---|
| 51, Shelldale Road935 m away | 32 m² | 69 m² | +37 m² +116% | 2011 |
|---|
| 48, Portland Villas440 m away | 123 m² | 159 m² | +36 m² +29% | 2023 |
|---|
| 54, Brittany Road424 m away | 122 m² | 158 m² | +36 m² +30% | 2012 |
|---|
| 110, Hallyburton Road519 m away | 105 m² | 140 m² | +35 m² +33% | 2026 |
|---|
| 29, Welbeck Avenue989 m away | 198 m² | 233 m² | +35 m² +18% | 2026 |
|---|
| 60, St Andrews Road404 m away | 95 m² | 129 m² | +34 m² +36% | 2026 |
|---|
| 87, St Leonards Avenue84 m away | 91 m² | 125 m² | +34 m² +37% | 2025 |
|---|
| 5, Elm Road884 m away | 91 m² | 125 m² | +34 m² +37% | 2025 |
|---|
| 13, Chelston Avenue367 m away | 116 m² | 150 m² | +34 m² +29% | 2020 |
|---|
| 259, Old Shoreham Road669 m away | 147 m² | 181 m² | +34 m² +23% | 2018 |
|---|
| 1, Garden Close594 m away | 42 m² | 75 m² | +33 m² +79% | 2026 |
|---|
| 20, Vale Road335 m away | 91 m² | 124 m² | +33 m² +36% | 2024 |
|---|
| 1a, North Street376 m away | 30 m² | 63 m² | +33 m² +110% | 2020 |
|---|
| 122, Victoria Road735 m away | 93 m² | 126 m² | +33 m² +35% | 2016 |
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| 366, Portland Road570 m away | 92 m² | 125 m² | +33 m² +36% | 2015 |
|---|
| 18, Norway Street354 m away | 88 m² | 120 m² | +32 m² +36% | 2021 |
|---|
| 6, Denmark Road399 m away | 78 m² | 110 m² | +32 m² +41% | 2019 |
|---|
| 7, Roman Road534 m away | 96 m² | 128 m² | +32 m² +33% | 2016 |
|---|
| 12, Brambledean Road719 m away | 85 m² | 116 m² | +31 m² +36% | 2025 |
|---|
| 107, St Leonards Road0 m away | 102 m² | 133 m² | +31 m² +30% | 2023 |
|---|
| 110, New Church Road964 m away | 136 m² | 167 m² | +31 m² +23% | 2016 |
|---|
| 3a, Portland Avenue712 m away | 61 m² | 92 m² | +31 m² +51% | 2013 |
|---|
| 20, Shelldale Road868 m away | 46 m² | 77 m² | +31 m² +67% | 2013 |
|---|
| 1, Wellington Road375 m away | 47 m² | 77 m² | +30 m² +64% | 2026 |
|---|
| 35, St Aubyns Road217 m away | 53 m² | 83 m² | +30 m² +57% | 2020 |
|---|
| 65, St Leonards Gardens192 m away | 100 m² | 130 m² | +30 m² +30% | 2013 |
|---|
| 5, Benfield Close917 m away | 88 m² | 118 m² | +30 m² +34% | 2012 |
|---|
| 78, St Andrews Road404 m away | 119 m² | 148 m² | +29 m² +24% | 2023 |
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| 168, St Leonards Avenue98 m away | 93 m² | 121 m² | +28 m² +30% | 2026 |
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| 49, Woodhouse Road856 m away | 108 m² | 136 m² | +28 m² +26% | 2026 |
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| 170, St Leonards Avenue98 m away | 92 m² | 120 m² | +28 m² +30% | 2024 |
|---|
| 59, Portland Villas465 m away | 103 m² | 131 m² | +28 m² +27% | 2024 |
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| 50, St Richards Road780 m away | 78 m² | 106 m² | +28 m² +36% | 2021 |
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| 356, Portland Road675 m away | 129 m² | 157 m² | +28 m² +22% | 2018 |
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| 18, St Andrews Road224 m away | 58 m² | 86 m² | +28 m² +48% | 2016 |
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| 18, Albion Street465 m away | 100 m² | 127 m² | +27 m² +27% | 2022 |
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| 13, Lincoln Road730 m away | 79 m² | 106 m² | +27 m² +34% | 2020 |
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| 10, Denmark Road399 m away | 83 m² | 109 m² | +26 m² +31% | 2025 |
|---|
| 6, North Street283 m away | 32 m² | 58 m² | +26 m² +81% | 2024 |
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| 10, Brambledean Road719 m away | 92 m² | 118 m² | +26 m² +28% | 2024 |
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| 281, Old Shoreham Road669 m away | 90 m² | 116 m² | +26 m² +29% | 2023 |
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| 39, Brittany Road457 m away | 123 m² | 149 m² | +26 m² +21% | 2022 |
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| 73, Worcester Villas259 m away | 112 m² | 138 m² | +26 m² +23% | 2021 |
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| 122, St Leonards Avenue98 m away | 49 m² | 75 m² | +26 m² +53% | 2020 |
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| 6, Brittany Road424 m away | 92 m² | 118 m² | +26 m² +28% | 2020 |
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| 45, Hangleton Road866 m away | 140 m² | 166 m² | +26 m² +19% | 2016 |
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| 16, Mornington Mansions, New Church Road544 m away | 58 m² | 84 m² | +26 m² +45% | 2010 |
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| 30, St Nicholas Road618 m away | 85 m² | 110 m² | +25 m² +29% | 2026 |
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| 2, St Leonards Gardens166 m away | 117 m² | 142 m² | +25 m² +21% | 2024 |
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| 192, Old Shoreham Road913 m away | 78 m² | 103 m² | +25 m² +32% | 2024 |
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| 80, St Leonards Road39 m away | 63 m² | 88 m² | +25 m² +40% | 2020 |
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| 40, Hallyburton Road677 m away | 80 m² | 105 m² | +25 m² +31% | 2020 |
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| 63, Brambledean Road719 m away | 79 m² | 104 m² | +25 m² +32% | 2020 |
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| 9, St Leonards Road162 m away | 92 m² | 117 m² | +25 m² +27% | 2016 |
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| 17, Portland Avenue792 m away | 110 m² | 135 m² | +25 m² +23% | 2015 |
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| 15, Rothbury Road560 m away | 119 m² | 144 m² | +25 m² +21% | 2014 |
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| 5, St Leonards Gardens192 m away | 97 m² | 122 m² | +25 m² +26% | 2012 |
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| 2, Hurst Crescent979 m away | 74 m² | 98 m² | +24 m² +32% | 2026 |
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| 2a, St Aubyns Road221 m away | 83 m² | 107 m² | +24 m² +29% | 2024 |
|---|
| 32, Jesmond Road622 m away | 94 m² | 118 m² | +24 m² +26% | 2024 |
|---|
| 3, Saxon Road592 m away | 99 m² | 123 m² | +24 m² +24% | 2018 |
|---|
| 1, Portland Lane474 m away | 78 m² | 102 m² | +24 m² +31% | 2017 |
|---|
| 15, Saxon Road592 m away | 130 m² | 154 m² | +24 m² +18% | 2014 |
|---|
| Flat 1, 249, New Church Road130 m away | 36 m² | 59 m² | +23 m² +64% | 2026 |
|---|
| 3, Coleman Avenue940 m away | 139 m² | 162 m² | +23 m² +17% | 2026 |
|---|
| 33, Derek Avenue387 m away | 116 m² | 139 m² | +23 m² +20% | 2021 |
|---|
| 56, Mansfield Road668 m away | 124 m² | 147 m² | +23 m² +19% | 2021 |
|---|
| 4, St Leonards Gardens166 m away | 107 m² | 130 m² | +23 m² +21% | 2020 |
|---|
| 105, St Andrews Road450 m away | 100 m² | 123 m² | +23 m² +23% | 2016 |
|---|
| 11, Olive Road850 m away | 73 m² | 96 m² | +23 m² +32% | 2015 |
|---|
| 79, Trafalgar Road946 m away | 65 m² | 88 m² | +23 m² +35% | 2014 |
|---|
| 74, St Leonards Road39 m away | 66 m² | 88 m² | +22 m² +33% | 2023 |
|---|
| 1, Brittany Road457 m away | 124 m² | 146 m² | +22 m² +18% | 2023 |
|---|
| 27, Hallyburton Road710 m away | 66 m² | 88 m² | +22 m² +33% | 2022 |
|---|
| 39, Eastbrook Road664 m away | 72 m² | 94 m² | +22 m² +31% | 2020 |
|---|
| 26, St Richards Road780 m away | 79 m² | 101 m² | +22 m² +28% | 2020 |
|---|
| 5, Mornington Mansions, New Church Road544 m away | 55 m² | 77 m² | +22 m² +40% | 2018 |
|---|
| 34, Norway Street354 m away | 86 m² | 108 m² | +22 m² +26% | 2016 |
|---|
| 139, New Church Road806 m away | 142 m² | 164 m² | +22 m² +15% | 2013 |
|---|
| 14, St Aubyns Road221 m away | 127 m² | 148 m² | +21 m² +17% | 2023 |
|---|
| 53, Worcester Villas259 m away | 130 m² | 151 m² | +21 m² +16% | 2020 |
|---|
| 108, North Street283 m away | 37 m² | 58 m² | +21 m² +57% | 2020 |
|---|
| 126, Trafalgar Road955 m away | 96 m² | 117 m² | +21 m² +22% | 2018 |
|---|
| 19, Brittany Road457 m away | 82 m² | 102 m² | +20 m² +24% | 2024 |
|---|
| 12, Norway Street354 m away | 87 m² | 107 m² | +20 m² +23% | 2021 |
|---|
| 98, Hallyburton Road519 m away | 130 m² | 150 m² | +20 m² +15% | 2020 |
|---|
| 6, Southdown Avenue664 m away | 79 m² | 99 m² | +20 m² +25% | 2020 |
|---|
| 22, Benfield Way854 m away | 129 m² | 149 m² | +20 m² +16% | 2020 |
|---|
| 22, Beaconsfield Road942 m away | 87 m² | 107 m² | +20 m² +23% | 2020 |
|---|
| 246, New Church Road86 m away | 66 m² | 86 m² | +20 m² +30% | 2014 |
|---|
| 54, Portland Villas440 m away | 64 m² | 84 m² | +20 m² +31% | 2014 |
|---|
| 138, St Leonards Avenue98 m away | 47 m² | 67 m² | +20 m² +43% | 2013 |
|---|
| 11, St Richards Road780 m away | 81 m² | 101 m² | +20 m² +25% | 2010 |
|---|
| 11, Vale Road410 m away | 84 m² | 103 m² | +19 m² +23% | 2025 |
|---|
| Flat 4, 56, Portland Villas440 m away | 46 m² | 65 m² | +19 m² +41% | 2022 |
|---|
| 37, Eastbrook Road664 m away | 70 m² | 89 m² | +19 m² +27% | 2021 |
|---|
| 4, Fishersgate Terrace866 m away | 41 m² | 60 m² | +19 m² +46% | 2017 |
|---|
| 4, Norway Street354 m away | 91 m² | 109 m² | +18 m² +20% | 2024 |
|---|
| Flat 2, 8, Portland Villas440 m away | 68 m² | 86 m² | +18 m² +26% | 2015 |
|---|
| 24, Beaconsfield Road942 m away | 90 m² | 108 m² | +18 m² +20% | 2014 |
|---|
| 108, St Leonards Avenue98 m away | 44 m² | 62 m² | +18 m² +41% | 2012 |
|---|
| 73, Church Road526 m away | 94 m² | 111 m² | +17 m² +18% | 2026 |
|---|
| 25, Rothbury Road560 m away | 94 m² | 111 m² | +17 m² +18% | 2026 |
|---|
| 35, St Keyna Avenue262 m away | 94 m² | 111 m² | +17 m² +18% | 2023 |
|---|
| 15, Norway Street354 m away | 82 m² | 99 m² | +17 m² +21% | 2023 |
|---|