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 4ND
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 |
|---|---|---|---|---|
| 14, Carlisle Road753 m away | 110 m² | 265 m² | +155 m² +141% | 2013 |
| 5, Western Esplanade327 m away | 132 m² | 268 m² | +136 m² +103% | 2024 |
| 5, Tandridge Road73 m away | 89 m² | 206 m² | +117 m² +131% | 2014 |
| 25, Berriedale Avenue487 m away | 122 m² | 236 m² | +114 m² +93% | 2014 |
| 4a, Mansfield Road492 m away | 90 m² | 203 m² | +113 m² +126% | 2020 |
| 78a, New Church Road729 m away | 125 m² | 236 m² | +111 m² +89% | 2024 |
| 17, Reynolds Road875 m away | 110 m² | 218 m² | +108 m² +98% | 2016 |
| 69, Langdale Road734 m away | 91 m² | 196 m² | +105 m² +115% | 2011 |
| 3, Tandridge Road73 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 |
| 182 m² |
| +99 m² +119% |
| 2022 |
| 237, New Church Road695 m away | 106 m² | 204 m² | +98 m² +92% | 2015 |
|---|
| 303, Kingsway98 m away | 125 m² | 222 m² | +97 m² +78% | 2021 |
|---|
| 13, Langdale Gardens640 m away | 77 m² | 172 m² | +95 m² +123% | 2019 |
|---|
| 5, Portland Avenue426 m away | 81 m² | 175 m² | +94 m² +116% | 2017 |
|---|
| 13, St Keyna Avenue348 m away | 143 m² | 235 m² | +92 m² +64% | 2024 |
|---|
| 60, Langdale Gardens629 m away | 70 m² | 162 m² | +92 m² +131% | 2018 |
|---|
| 33, Coleman Avenue634 m away | 137 m² | 220 m² | +83 m² +61% | 2022 |
|---|
| 89, New Church Road666 m away | 142 m² | 221 m² | +79 m² +56% | 2012 |
|---|
| 19, Sackville Gardens986 m away | 185 m² | 263 m² | +78 m² +42% | 2020 |
|---|
| 16, Welbeck Avenue369 m away | 159 m² | 236 m² | +77 m² +48% | 2025 |
|---|
| 40, Welbeck Avenue415 m away | 149 m² | 226 m² | +77 m² +52% | 2019 |
|---|
| 21, Portland Villas545 m away | 85 m² | 162 m² | +77 m² +91% | 2016 |
|---|
| 38, Hogarth Road807 m away | 140 m² | 217 m² | +77 m² +55% | 2016 |
|---|
| 9, Tandridge Road73 m away | 77 m² | 154 m² | +77 m² +100% | 2014 |
|---|
| 39, Braemore Road580 m away | 128 m² | 204 m² | +76 m² +59% | 2023 |
|---|
| 14, Wish Road293 m away | 60 m² | 134 m² | +74 m² +123% | 2025 |
|---|
| 24, St Leonards Gardens452 m away | 80 m² | 153 m² | +73 m² +91% | 2025 |
|---|
| 10, Glastonbury Road269 m away | 117 m² | 190 m² | +73 m² +62% | 2024 |
|---|
| 39, Leicester Villas675 m away | 159 m² | 232 m² | +73 m² +46% | 2024 |
|---|
| 100, New Church Road634 m away | 60 m² | 133 m² | +73 m² +122% | 2020 |
|---|
| 214, Portland Road858 m away | 63 m² | 135 m² | +72 m² +114% | 2021 |
|---|
| 85, New Church Road666 m away | 163 m² | 234 m² | +71 m² +44% | 2024 |
|---|
| Flat 2, 36, Station Road758 m away | 61 m² | 132 m² | +71 m² +116% | 2019 |
|---|
| 21, Walsingham Road900 m away | 167 m² | 237 m² | +70 m² +42% | 2023 |
|---|
| 34, Raphael Road965 m away | 130 m² | 200 m² | +70 m² +54% | 2020 |
|---|
| 11, Portland Villas545 m away | 88 m² | 158 m² | +70 m² +80% | 2017 |
|---|
| 27, Jesmond Road539 m away | 109 m² | 177 m² | +68 m² +62% | 2023 |
|---|
| 68, Braemore Road543 m away | 67 m² | 135 m² | +68 m² +101% | 2011 |
|---|
| 77b, Carlisle Road815 m away | 162 m² | 229 m² | +67 m² +41% | 2026 |
|---|
| 31, Lawrence Road944 m away | 81 m² | 147 m² | +66 m² +81% | 2014 |
|---|
| 77, New Church Road666 m away | 342 m² | 406 m² | +64 m² +19% | 2025 |
|---|
| 26, Reynolds Road875 m away | 116 m² | 180 m² | +64 m² +55% | 2025 |
|---|
| 60, Walsingham Road848 m away | 125 m² | 189 m² | +64 m² +51% | 2016 |
|---|
| Flat 3, 14, Sackville Gardens938 m away | 53 m² | 117 m² | +64 m² +121% | 2014 |
|---|
| 33, Jesmond Road539 m away | 93 m² | 156 m² | +63 m² +68% | 2015 |
|---|
| 14, Berriedale Avenue452 m away | 172 m² | 234 m² | +62 m² +36% | 2025 |
|---|
| 36, Rothbury Road533 m away | 98 m² | 159 m² | +61 m² +62% | 2024 |
|---|
| 25, Portland Villas545 m away | 114 m² | 175 m² | +61 m² +54% | 2020 |
|---|
| 27, St Keyna Avenue348 m away | 106 m² | 167 m² | +61 m² +58% | 2011 |
|---|
| 54, Langdale Gardens629 m away | 177 m² | 237 m² | +60 m² +34% | 2024 |
|---|
| 245, Kingsway534 m away | 236 m² | 296 m² | +60 m² +25% | 2020 |
|---|
| 27, Gordon Road918 m away | 68 m² | 128 m² | +60 m² +88% | 2020 |
|---|
| 76, St Leonards Gardens452 m away | 108 m² | 168 m² | +60 m² +56% | 2016 |
|---|
| 12, Welbeck Avenue369 m away | 134 m² | 193 m² | +59 m² +44% | 2026 |
|---|
| 3, Brittany Road187 m away | 83 m² | 142 m² | +59 m² +71% | 2018 |
|---|
| 3, Portland Villas545 m away | 104 m² | 162 m² | +58 m² +56% | 2012 |
|---|
| 11, Victoria Road966 m away | 40 m² | 98 m² | +58 m² +145% | 2012 |
|---|
| 9, Worcester Villas743 m away | 56 m² | 113 m² | +57 m² +102% | 2021 |
|---|
| 154a, New Church Road351 m away | 152 m² | 208 m² | +56 m² +37% | 2022 |
|---|
| 19, Berriedale Avenue487 m away | 170 m² | 226 m² | +56 m² +33% | 2013 |
|---|
| 22, Tennis Road209 m away | 89 m² | 144 m² | +55 m² +62% | 2022 |
|---|
| 24, Wish Road293 m away | 78 m² | 133 m² | +55 m² +71% | 2020 |
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| 326, Portland Road651 m away | 98 m² | 153 m² | +55 m² +56% | 2014 |
|---|
| 38, Portland Avenue567 m away | 109 m² | 163 m² | +54 m² +50% | 2021 |
|---|
| 23, Portland Avenue562 m away | 129 m² | 183 m² | +54 m² +42% | 2017 |
|---|
| 1, St Andrews Road848 m away | 126 m² | 180 m² | +54 m² +43% | 2016 |
|---|
| 49, Sackville Gardens986 m away | 157 m² | 210 m² | +53 m² +34% | 2017 |
|---|
| 15, Middleton Avenue293 m away | 124 m² | 177 m² | +53 m² +43% | 2012 |
|---|
| 45, Sackville Gardens986 m away | 141 m² | 193 m² | +52 m² +37% | 2017 |
|---|
| 38, Marmion Road966 m away | 102 m² | 153 m² | +51 m² +50% | 2026 |
|---|
| 50, Mansfield Road492 m away | 123 m² | 174 m² | +51 m² +41% | 2025 |
|---|
| 14, Saxon Road59 m away | 156 m² | 207 m² | +51 m² +33% | 2020 |
|---|
| 44, St Leonards Gardens452 m away | 79 m² | 129 m² | +50 m² +63% | 2023 |
|---|
| 14, St Keyna Avenue383 m away | 108 m² | 158 m² | +50 m² +46% | 2016 |
|---|
| 37, Mansfield Road549 m away | 56 m² | 105 m² | +49 m² +88% | 2025 |
|---|
| 297, Kingsway210 m away | 50 m² | 99 m² | +49 m² +98% | 2022 |
|---|
| 58, St Keyna Avenue383 m away | 103 m² | 152 m² | +49 m² +48% | 2016 |
|---|
| 46, St Leonards Gardens452 m away | 77 m² | 126 m² | +49 m² +64% | 2015 |
|---|
| 197, New Church Road513 m away | 178 m² | 227 m² | +49 m² +28% | 2012 |
|---|
| 92, New Church Road634 m away | 139 m² | 186 m² | +47 m² +34% | 2026 |
|---|
| 411, Portland Road828 m away | 102 m² | 149 m² | +47 m² +46% | 2020 |
|---|
| 206, New Church Road387 m away | 113 m² | 160 m² | +47 m² +42% | 2016 |
|---|
| 65, St Leonards Road568 m away | 46 m² | 92 m² | +46 m² +100% | 2016 |
|---|
| 38, Woodhouse Road584 m away | 64 m² | 110 m² | +46 m² +72% | 2014 |
|---|
| 54, Braemore Road543 m away | 140 m² | 185 m² | +45 m² +32% | 2020 |
|---|
| 15, St Keyna Avenue348 m away | 131 m² | 176 m² | +45 m² +34% | 2018 |
|---|
| 21, Glebe Villas576 m away | 108 m² | 153 m² | +45 m² +42% | 2016 |
|---|
| 83, St Leonards Road610 m away | 88 m² | 133 m² | +45 m² +51% | 2015 |
|---|
| 8, Margery Road966 m away | 93 m² | 137 m² | +44 m² +47% | 2025 |
|---|
| 71, St Leonards Gardens421 m away | 91 m² | 135 m² | +44 m² +48% | 2024 |
|---|
| 1, Welbeck Avenue407 m away | 176 m² | 220 m² | +44 m² +25% | 2021 |
|---|
| 54, Sackville Gardens938 m away | 102 m² | 146 m² | +44 m² +43% | 2019 |
|---|
| 37, Carlisle Road796 m away | 150 m² | 194 m² | +44 m² +29% | 2018 |
|---|
| 6, Carlisle Road753 m away | 42 m² | 86 m² | +44 m² +105% | 2016 |
|---|
| 165, New Church Road358 m away | 131 m² | 175 m² | +44 m² +34% | 2013 |
|---|
| 8, Roman Road142 m away | 117 m² | 160 m² | +43 m² +37% | 2024 |
|---|
| 52, Brittany Road205 m away | 155 m² | 198 m² | +43 m² +28% | 2024 |
|---|
| 52, St Leonards Gardens452 m away | 83 m² | 126 m² | +43 m² +52% | 2017 |
|---|
| 31, Bolsover Road896 m away | 59 m² | 102 m² | +43 m² +73% | 2014 |
|---|
| 5, Brittany Road187 m away | 98 m² | 140 m² | +42 m² +43% | 2023 |
|---|
| 3, Woodhouse Road571 m away | 135 m² | 177 m² | +42 m² +31% | 2023 |
|---|
| 13, Langdale Road708 m away | 147 m² | 189 m² | +42 m² +29% | 2018 |
|---|
| 29, Brittany Road187 m away | 112 m² | 154 m² | +42 m² +38% | 2012 |
|---|
| 41, Derek Avenue234 m away | 123 m² | 165 m² | +42 m² +34% | 2012 |
|---|
| 51, St Andrews Road848 m away | 56 m² | 98 m² | +42 m² +75% | 2011 |
|---|
| 340, Portland Road651 m away | 96 m² | 137 m² | +41 m² +43% | 2026 |
|---|
| 19, Norman Road150 m away | 53 m² | 94 m² | +41 m² +77% | 2023 |
|---|
| 2, Raphael Road965 m away | 205 m² | 246 m² | +41 m² +20% | 2018 |
|---|
| 158, New Church Road351 m away | 191 m² | 231 m² | +40 m² +21% | 2021 |
|---|
| 8b, Marine Avenue134 m away | 72 m² | 112 m² | +40 m² +56% | 2020 |
|---|
| 16, Park Avenue587 m away | 174 m² | 213 m² | +39 m² +22% | 2025 |
|---|
| 33, Amesbury Crescent639 m away | 231 m² | 270 m² | +39 m² +17% | 2025 |
|---|
| 40, Langdale Road693 m away | 124 m² | 163 m² | +39 m² +31% | 2023 |
|---|
| 38, Berriedale Avenue492 m away | 125 m² | 164 m² | +39 m² +31% | 2020 |
|---|
| 40, Marmion Road966 m away | 101 m² | 140 m² | +39 m² +39% | 2020 |
|---|
| 70, Marmion Road966 m away | 101 m² | 140 m² | +39 m² +39% | 2014 |
|---|
| 6, Glendor Road237 m away | 113 m² | 152 m² | +39 m² +35% | 2013 |
|---|
| 31, Portland Villas545 m away | 138 m² | 177 m² | +39 m² +28% | 2012 |
|---|
| 145, St Leonards Avenue540 m away | 90 m² | 128 m² | +38 m² +42% | 2024 |
|---|
| 15, Braemore Road580 m away | 166 m² | 204 m² | +38 m² +23% | 2024 |
|---|
| 78, New Church Road729 m away | 113 m² | 151 m² | +38 m² +34% | 2024 |
|---|
| 26, Boundary Road698 m away | 46 m² | 84 m² | +38 m² +83% | 2020 |
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| 32, St Andrews Road809 m away | 42 m² | 80 m² | +38 m² +90% | 2015 |
|---|
| 28, Erroll Road505 m away | 37 m² | 74 m² | +37 m² +100% | 2021 |
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| 212, New Church Road387 m away | 122 m² | 159 m² | +37 m² +30% | 2019 |
|---|
| 1, Kenton Road387 m away | 149 m² | 186 m² | +37 m² +25% | 2013 |
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| 39, St Heliers Avenue753 m away | 97 m² | 133 m² | +36 m² +37% | 2024 |
|---|
| 48, Portland Villas565 m away | 123 m² | 159 m² | +36 m² +29% | 2023 |
|---|
| 61, Langdale Gardens665 m away | 109 m² | 145 m² | +36 m² +33% | 2018 |
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| 54, Brittany Road205 m away | 122 m² | 158 m² | +36 m² +30% | 2012 |
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| 29, Welbeck Avenue407 m away | 198 m² | 233 m² | +35 m² +18% | 2026 |
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| 110, Hallyburton Road920 m away | 105 m² | 140 m² | +35 m² +33% | 2026 |
|---|
| 1, Courtyard Lane914 m away | 162 m² | 197 m² | +35 m² +22% | 2025 |
|---|
| 58, Lawrence Road769 m away | 132 m² | 167 m² | +35 m² +27% | 2021 |
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| 60, St Andrews Road987 m away | 95 m² | 129 m² | +34 m² +36% | 2026 |
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| 87, St Leonards Avenue540 m away | 91 m² | 125 m² | +34 m² +37% | 2025 |
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| 11, Milnthorpe Road960 m away | 70 m² | 104 m² | +34 m² +49% | 2022 |
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| 13, Chelston Avenue669 m away | 116 m² | 150 m² | +34 m² +29% | 2020 |
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| 23, St Heliers Avenue753 m away | 111 m² | 145 m² | +34 m² +31% | 2012 |
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| 20, Vale Road903 m away | 91 m² | 124 m² | +33 m² +36% | 2024 |
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| 26, Hogarth Road807 m away | 127 m² | 160 m² | +33 m² +26% | 2020 |
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| 1a, North Street882 m away | 30 m² | 63 m² | +33 m² +110% | 2020 |
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| 69, New Church Road883 m away | 82 m² | 115 m² | +33 m² +40% | 2020 |
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| 15, St Heliers Avenue753 m away | 100 m² | 133 m² | +33 m² +33% | 2018 |
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| 366, Portland Road666 m away | 92 m² | 125 m² | +33 m² +36% | 2015 |
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| 18, Norway Street960 m away | 88 m² | 120 m² | +32 m² +36% | 2021 |
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| 7, Roman Road150 m away | 96 m² | 128 m² | +32 m² +33% | 2016 |
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| 19, Milnthorpe Road960 m away | 71 m² | 102 m² | +31 m² +44% | 2025 |
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| 107, St Leonards Road610 m away | 102 m² | 133 m² | +31 m² +30% | 2023 |
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| 28, Bolsover Road881 m away | 73 m² | 104 m² | +31 m² +42% | 2022 |
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| 61, Bolsover Road896 m away | 73 m² | 104 m² | +31 m² +42% | 2021 |
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| 46, Grange Road863 m away | 62 m² | 93 m² | +31 m² +50% | 2019 |
|---|
| 110, New Church Road501 m away | 136 m² | 167 m² | +31 m² +23% | 2016 |
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| 28, Carlisle Road753 m away | 64 m² | 95 m² | +31 m² +48% | 2016 |
|---|
| 3a, Portland Avenue426 m away | 61 m² | 92 m² | +31 m² +51% | 2013 |
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| 9, Braemore Road580 m away | 148 m² | 179 m² | +31 m² +21% | 2013 |
|---|
| 1, Wellington Road799 m away | 47 m² | 77 m² | +30 m² +64% | 2026 |
|---|
| 17, Milnthorpe Road960 m away | 72 m² | 102 m² | +30 m² +42% | 2024 |
|---|
| 7, Dallington Road989 m away | 87 m² | 117 m² | +30 m² +34% | 2024 |
|---|
| 35, St Aubyns Road824 m away | 53 m² | 83 m² | +30 m² +57% | 2020 |
|---|
| 65, St Leonards Gardens421 m away | 100 m² | 130 m² | +30 m² +30% | 2013 |
|---|
| 44, Bolsover Road881 m away | 76 m² | 105 m² | +29 m² +38% | 2024 |
|---|
| 78, St Andrews Road987 m away | 119 m² | 148 m² | +29 m² +24% | 2023 |
|---|
| 168, St Leonards Avenue557 m away | 93 m² | 121 m² | +28 m² +30% | 2026 |
|---|
| 49, Woodhouse Road571 m away | 108 m² | 136 m² | +28 m² +26% | 2026 |
|---|
| 59, Portland Villas545 m away | 103 m² | 131 m² | +28 m² +27% | 2024 |
|---|
| 170, St Leonards Avenue557 m away | 92 m² | 120 m² | +28 m² +30% | 2024 |
|---|
| 356, Portland Road651 m away | 129 m² | 157 m² | +28 m² +22% | 2018 |
|---|
| 20, St Heliers Avenue753 m away | 125 m² | 153 m² | +28 m² +22% | 2018 |
|---|
| 18, St Andrews Road809 m away | 58 m² | 86 m² | +28 m² +48% | 2016 |
|---|
| 4, Grange Road863 m away | 93 m² | 121 m² | +28 m² +30% | 2014 |
|---|
| 44, Titian Road903 m away | 159 m² | 186 m² | +27 m² +17% | 2025 |
|---|
| 6, North Street796 m away | 32 m² | 58 m² | +26 m² +81% | 2024 |
|---|
| 39, Brittany Road187 m away | 123 m² | 149 m² | +26 m² +21% | 2022 |
|---|
| 73, Worcester Villas743 m away | 112 m² | 138 m² | +26 m² +23% | 2021 |
|---|
| 6, Brittany Road205 m away | 92 m² | 118 m² | +26 m² +28% | 2020 |
|---|
| 122, St Leonards Avenue557 m away | 49 m² | 75 m² | +26 m² +53% | 2020 |
|---|
| 16, Mornington Mansions, New Church Road306 m away | 58 m² | 84 m² | +26 m² +45% | 2010 |
|---|
| 65, Langdale Road734 m away | 54 m² | 80 m² | +26 m² +48% | 2008 |
|---|
| 19, Langdale Gardens640 m away | 143 m² | 168 m² | +25 m² +17% | 2025 |
|---|
| 2, St Leonards Gardens452 m away | 117 m² | 142 m² | +25 m² +21% | 2024 |
|---|
| 25, Walsingham Road900 m away | 71 m² | 96 m² | +25 m² +35% | 2024 |
|---|
| 43, Bolsover Road896 m away | 38 m² | 63 m² | +25 m² +66% | 2023 |
|---|
| 22, Amesbury Crescent639 m away | 135 m² | 160 m² | +25 m² +19% | 2021 |
|---|
| 80, St Leonards Road635 m away | 63 m² | 88 m² | +25 m² +40% | 2020 |
|---|
| 40, Hallyburton Road857 m away | 80 m² | 105 m² | +25 m² +31% | 2020 |
|---|
| 9, St Leonards Road568 m away | 92 m² | 117 m² | +25 m² +27% | 2016 |
|---|
| 17, Portland Avenue562 m away | 110 m² | 135 m² | +25 m² +23% | 2015 |
|---|
| 15, Rothbury Road545 m away | 119 m² | 144 m² | +25 m² +21% | 2014 |
|---|
| 5, St Leonards Gardens421 m away | 97 m² | 122 m² | +25 m² +26% | 2012 |
|---|
| 32, Jesmond Road547 m away | 94 m² | 118 m² | +24 m² +26% | 2024 |
|---|
| 2a, St Aubyns Road821 m away | 83 m² | 107 m² | +24 m² +29% | 2024 |
|---|
| 3, Saxon Road59 m away | 99 m² | 123 m² | +24 m² +24% | 2018 |
|---|
| 1, Portland Lane634 m away | 78 m² | 102 m² | +24 m² +31% | 2017 |
|---|
| 4, Langdale Gardens604 m away | 41 m² | 65 m² | +24 m² +59% | 2015 |
|---|
| 15, Saxon Road59 m away | 130 m² | 154 m² | +24 m² +18% | 2014 |
|---|
| Flat 11, Prince Of Wales Court, 227 - 229, Kingsway682 m away | 78 m² | 102 m² | +24 m² +31% | 2012 |
|---|
| 3, Coleman Avenue634 m away | 139 m² | 162 m² | +23 m² +17% | 2026 |
|---|
| Flat 1, 249, New Church Road695 m away | 36 m² | 59 m² | +23 m² +64% | 2026 |
|---|
| 29, Marmion Road992 m away | 103 m² | 126 m² | +23 m² +22% | 2025 |
|---|
| 15, Bolsover Road896 m away | 72 m² | 95 m² | +23 m² +32% | 2022 |
|---|