Finding extended homes…
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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 SE23 2UD
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 |
|---|---|---|---|---|
| 81, Canonbie Road992 m away | 112 m² | 240 m² | +128 m² +114% | 2021 |
| 1, Radlet Avenue872 m away | 123 m² | 242 m² | +119 m² +97% | 2026 |
| 7b, Church Rise0 m away | 143 m² | 256 m² | +113 m² +79% | 2024 |
| 66, Sunderland Road312 m away | 100 m² | 209 m² | +109 m² +109% | 2026 |
| 10, Cranston Road443 m away | 129 m² | 237 m² | +108 m² +84% | 2012 |
| 76, London Road617 m away | 105 m² | 210 m² | +105 m² +100% | 2013 |
| 13e, Westwood Park791 m away | 122 m² | 224 m² | +102 m² +84% | 2014 |
| 5, Hennel Close713 m away | 94 m² | 188 m² | +94 m² +100% | 2026 |
| 99, Dacres Road830 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.
| 207 m² |
| +91 m² +78% |
| 2014 |
| 32b, Sunderland Road76 m away | 118 m² | 205 m² | +87 m² +74% | 2015 |
|---|
| 17, Gaynesford Road265 m away | 108 m² | 191 m² | +83 m² +77% | 2020 |
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| 10, Shaws Cottages732 m away | 57 m² | 139 m² | +82 m² +144% | 2019 |
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| Arthive Studios Unit 3, 29, Hindsleys Place219 m away | 59 m² | 134 m² | +75 m² +127% | 2015 |
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| 28, Devonshire Road357 m away | 85 m² | 160 m² | +75 m² +88% | 2015 |
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| 166, Stanstead Road481 m away | 157 m² | 226 m² | +69 m² +44% | 2022 |
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| 18, Haredon Close1000 m away | 59 m² | 127 m² | +68 m² +115% | 2015 |
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| 15, Westwood Park946 m away | 166 m² | 233 m² | +67 m² +40% | 2017 |
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| 35, Siddons Road367 m away | 127 m² | 193 m² | +66 m² +52% | 2025 |
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| 47, Stanstead Road277 m away | 95 m² | 161 m² | +66 m² +69% | 2020 |
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| 67, Sunderland Road168 m away | 219 m² | 284 m² | +65 m² +30% | 2023 |
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| 72, Cranston Road454 m away | 95 m² | 160 m² | +65 m² +68% | 2022 |
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| 42, Lowther Hill921 m away | 104 m² | 168 m² | +64 m² +62% | 2018 |
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| 129, Cranston Road488 m away | 95 m² | 159 m² | +64 m² +67% | 2016 |
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| 25, Haredon Close1000 m away | 91 m² | 155 m² | +64 m² +70% | 2015 |
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| 49, Beadnell Road504 m away | 114 m² | 175 m² | +61 m² +54% | 2021 |
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| 71, Canonbie Road992 m away | 108 m² | 169 m² | +61 m² +56% | 2021 |
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| 4, Fairlie Gardens847 m away | 85 m² | 145 m² | +60 m² +71% | 2019 |
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| 21, Aylward Road424 m away | 144 m² | 203 m² | +59 m² +41% | 2026 |
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| 14, Agnew Road904 m away | 122 m² | 178 m² | +56 m² +46% | 2022 |
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| 23, Dunoon Road914 m away | 87 m² | 143 m² | +56 m² +64% | 2020 |
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| 1, St Pauls Conversion, Taymount Rise692 m away | 139 m² | 195 m² | +56 m² +40% | 2016 |
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| 12, Fermor Road785 m away | 104 m² | 160 m² | +56 m² +54% | 2016 |
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| Flat 2, 14, Waldram Park Road137 m away | 115 m² | 170 m² | +55 m² +48% | 2021 |
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| 5, Bovill Road954 m away | 91 m² | 146 m² | +55 m² +60% | 2021 |
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| 5, Aylward Road424 m away | 140 m² | 194 m² | +54 m² +39% | 2025 |
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| 8, Liphook Crescent955 m away | 84 m² | 138 m² | +54 m² +64% | 2013 |
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| 46, Cranston Road443 m away | 86 m² | 139 m² | +53 m² +62% | 2025 |
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| 56, Stanstead Road348 m away | 70 m² | 123 m² | +53 m² +76% | 2024 |
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| 53, Whatman Road802 m away | 86 m² | 139 m² | +53 m² +62% | 2022 |
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| 19, Clarens Street947 m away | 113 m² | 166 m² | +53 m² +47% | 2019 |
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| 118, Woolstone Road592 m away | 101 m² | 154 m² | +53 m² +52% | 2017 |
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| 7, Whittell Gardens979 m away | 86 m² | 139 m² | +53 m² +62% | 2014 |
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| 148, Cranston Road454 m away | 90 m² | 142 m² | +52 m² +58% | 2017 |
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| 40, Whittell Gardens979 m away | 79 m² | 131 m² | +52 m² +66% | 2017 |
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| 4, Church View, Sunderland Road157 m away | 106 m² | 158 m² | +52 m² +49% | 2015 |
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| 42, Thorpewood Avenue940 m away | 84 m² | 135 m² | +51 m² +61% | 2026 |
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| 51b, Elsinore Road649 m away | 65 m² | 116 m² | +51 m² +78% | 2024 |
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| 8a, Ebsworth Street762 m away | 59 m² | 110 m² | +51 m² +86% | 2024 |
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| 65a, Hurstbourne Road738 m away | 73 m² | 124 m² | +51 m² +70% | 2021 |
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| 85, Colfe Road337 m away | 89 m² | 140 m² | +51 m² +57% | 2014 |
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| 23, Aylward Road424 m away | 178 m² | 228 m² | +50 m² +28% | 2026 |
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| 11, Ewelme Road623 m away | 105 m² | 155 m² | +50 m² +48% | 2024 |
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| 32, Trilby Road175 m away | 77 m² | 127 m² | +50 m² +65% | 2023 |
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| 45, Whatman Road802 m away | 82 m² | 131 m² | +49 m² +60% | 2026 |
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| 10, Horniman Drive837 m away | 97 m² | 146 m² | +49 m² +51% | 2020 |
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| 35, Elsinore Road649 m away | 138 m² | 186 m² | +48 m² +35% | 2026 |
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| 11a, Ewelme Road623 m away | 104 m² | 151 m² | +47 m² +45% | 2026 |
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| 7, Kilmorie Road571 m away | 132 m² | 179 m² | +47 m² +36% | 2024 |
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| 103, Bovill Road678 m away | 71 m² | 118 m² | +47 m² +66% | 2022 |
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| 25, Queenswood Road854 m away | 91 m² | 138 m² | +47 m² +52% | 2022 |
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| 8, Roundhay Close436 m away | 79 m² | 126 m² | +47 m² +59% | 2021 |
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| 63, Vancouver Road604 m away | 122 m² | 169 m² | +47 m² +39% | 2021 |
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| 20, Whittell Gardens979 m away | 86 m² | 133 m² | +47 m² +55% | 2019 |
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| 52, Kilmorie Road520 m away | 149 m² | 195 m² | +46 m² +31% | 2025 |
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| 23, Allenby Road680 m away | 119 m² | 165 m² | +46 m² +39% | 2022 |
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| 6, Ebsworth Street762 m away | 69 m² | 115 m² | +46 m² +67% | 2022 |
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| 6, Ewelme Road611 m away | 171 m² | 216 m² | +45 m² +26% | 2026 |
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| 11, Ebsworth Street726 m away | 74 m² | 119 m² | +45 m² +61% | 2022 |
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| 27, Marler Road852 m away | 124 m² | 169 m² | +45 m² +36% | 2020 |
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| 21, Cibber Road263 m away | 51 m² | 96 m² | +45 m² +88% | 2016 |
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| 26, Loxton Road360 m away | 93 m² | 138 m² | +45 m² +48% | 2015 |
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| 109, Sydenham Park Road956 m away | 85 m² | 129 m² | +44 m² +52% | 2024 |
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| 28, Nyon Grove941 m away | 98 m² | 142 m² | +44 m² +45% | 2019 |
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| 163, Cranston Road488 m away | 95 m² | 138 m² | +43 m² +45% | 2025 |
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| 26, Trilby Road175 m away | 76 m² | 119 m² | +43 m² +57% | 2019 |
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| 18, Cleeve Hill820 m away | 34 m² | 77 m² | +43 m² +126% | 2016 |
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| 1, Marler Road852 m away | 143 m² | 185 m² | +42 m² +29% | 2024 |
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| 86a, Bovill Road710 m away | 70 m² | 112 m² | +42 m² +60% | 2023 |
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| 64, Devonshire Road434 m away | 207 m² | 249 m² | +42 m² +20% | 2022 |
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| 55, Whatman Road802 m away | 89 m² | 131 m² | +42 m² +47% | 2021 |
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| 13c, Havelock Walk419 m away | 62 m² | 104 m² | +42 m² +68% | 2020 |
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| 73, Kilmorie Road571 m away | 121 m² | 162 m² | +41 m² +34% | 2026 |
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| 157, Sydenham Park Road956 m away | 110 m² | 151 m² | +41 m² +37% | 2023 |
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| Flat B, 178, Stanstead Road557 m away | 58 m² | 99 m² | +41 m² +71% | 2022 |
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| 18, Davids Road431 m away | 49 m² | 90 m² | +41 m² +84% | 2020 |
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| 52, Como Road479 m away | 106 m² | 147 m² | +41 m² +39% | 2019 |
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| 30, Thorpewood Avenue940 m away | 168 m² | 209 m² | +41 m² +24% | 2012 |
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| 174, Stanstead Road481 m away | 50 m² | 91 m² | +41 m² +82% | 2010 |
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| 50, Rockbourne Road245 m away | 120 m² | 160 m² | +40 m² +33% | 2026 |
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| Flat 26, Valentine Court, Perry Vale301 m away | 44 m² | 84 m² | +40 m² +91% | 2022 |
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| 5, Colfe Road378 m away | 119 m² | 159 m² | +40 m² +34% | 2017 |
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| 105, London Road861 m away | 125 m² | 164 m² | +39 m² +31% | 2026 |
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| 8, Lutwyche Road866 m away | 87 m² | 126 m² | +39 m² +45% | 2025 |
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| 19, Kemble Road279 m away | 129 m² | 168 m² | +39 m² +30% | 2023 |
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| 73, Sunderland Road168 m away | 238 m² | 277 m² | +39 m² +16% | 2021 |
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| 23c, Church Rise0 m away | 112 m² | 151 m² | +39 m² +35% | 2015 |
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| 46, Colfe Road340 m away | 117 m² | 155 m² | +38 m² +32% | 2026 |
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| 30, Honor Oak Road908 m away | 92 m² | 130 m² | +38 m² +41% | 2025 |
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| 12, Trilby Road175 m away | 85 m² | 123 m² | +38 m² +45% | 2023 |
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| 34, Woodcombe Crescent510 m away | 117 m² | 155 m² | +38 m² +32% | 2023 |
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| 50, Stanstead Road348 m away | 79 m² | 117 m² | +38 m² +48% | 2020 |
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| 43, Woodcombe Crescent510 m away | 113 m² | 151 m² | +38 m² +34% | 2020 |
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| 113, Woolstone Road717 m away | 98 m² | 136 m² | +38 m² +39% | 2020 |
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| 29, Perry Vale228 m away | 52 m² | 90 m² | +38 m² +73% | 2016 |
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| 191e, Perry Vale542 m away | 55 m² | 92 m² | +37 m² +67% | 2026 |
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| 51, Ringmore Rise996 m away | 126 m² | 163 m² | +37 m² +29% | 2026 |
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| 58, Trilby Road175 m away | 96 m² | 133 m² | +37 m² +39% | 2025 |
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| 23, Benson Road627 m away | 129 m² | 166 m² | +37 m² +29% | 2025 |
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| 4, Ticehurst Road767 m away | 89 m² | 126 m² | +37 m² +42% | 2025 |
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| 25, Dunoon Road914 m away | 83 m² | 120 m² | +37 m² +45% | 2025 |
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| 82, Stanstead Road333 m away | 83 m² | 120 m² | +37 m² +45% | 2023 |
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| Flat A, 35, Waldram Park Road193 m away | 60 m² | 97 m² | +37 m² +62% | 2022 |
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| 78, Como Road479 m away | 85 m² | 122 m² | +37 m² +44% | 2022 |
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| 21, Woolstone Road867 m away | 107 m² | 144 m² | +37 m² +35% | 2022 |
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| 32, Whatman Road843 m away | 89 m² | 126 m² | +37 m² +42% | 2019 |
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| 63, Queenswood Road854 m away | 142 m² | 179 m² | +37 m² +26% | 2019 |
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| 36a, Garthorne Road884 m away | 93 m² | 130 m² | +37 m² +40% | 2014 |
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| 20, Cranston Road443 m away | 116 m² | 153 m² | +37 m² +32% | 2011 |
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| 21, Marler Road852 m away | 148 m² | 184 m² | +36 m² +24% | 2026 |
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| 1a, Perry Rise786 m away | 85 m² | 121 m² | +36 m² +42% | 2024 |
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| 62, Woolstone Road656 m away | 99 m² | 135 m² | +36 m² +36% | 2023 |
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| 161, Honor Oak Road672 m away | 82 m² | 118 m² | +36 m² +44% | 2023 |
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| 49, Thorpewood Avenue728 m away | 133 m² | 169 m² | +36 m² +27% | 2023 |
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| 28, Stanstead Road348 m away | 106 m² | 142 m² | +36 m² +34% | 2020 |
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| 4, Julian Tayler Path994 m away | 89 m² | 125 m² | +36 m² +40% | 2019 |
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| 32, De Frene Road986 m away | 93 m² | 129 m² | +36 m² +39% | 2017 |
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| 29, Sunderland Road168 m away | 47 m² | 83 m² | +36 m² +77% | 2016 |
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| Flat 8, Hosford House, 48, Devonshire Road381 m away | 61 m² | 97 m² | +36 m² +59% | 2012 |
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| 2, The Fieldings585 m away | 76 m² | 111 m² | +35 m² +46% | 2024 |
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| 51, Whatman Road802 m away | 95 m² | 130 m² | +35 m² +37% | 2019 |
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| 21, Ackroyd Road925 m away | 133 m² | 168 m² | +35 m² +26% | 2016 |
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| 64, Siddons Road440 m away | 116 m² | 151 m² | +35 m² +30% | 2015 |
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| 47, Kemble Road279 m away | 103 m² | 138 m² | +35 m² +34% | 2013 |
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| 33, Benson Road627 m away | 29 m² | 64 m² | +35 m² +121% | 2012 |
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| 75, Longfield Crescent638 m away | 73 m² | 108 m² | +35 m² +48% | 2011 |
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| 46, Ticehurst Road767 m away | 110 m² | 144 m² | +34 m² +31% | 2026 |
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| 9, Derby Hill Crescent658 m away | 106 m² | 140 m² | +34 m² +32% | 2025 |
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| 22, Lutwyche Road866 m away | 91 m² | 125 m² | +34 m² +37% | 2025 |
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| 60, Hurstbourne Road684 m away | 83 m² | 117 m² | +34 m² +41% | 2024 |
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| 40, Neuchatel Road976 m away | 69 m² | 103 m² | +34 m² +49% | 2024 |
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| 18, Elsinore Road606 m away | 124 m² | 158 m² | +34 m² +27% | 2021 |
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| 94, Kemble Road241 m away | 70 m² | 104 m² | +34 m² +49% | 2020 |
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| 98, Kemble Road241 m away | 69 m² | 103 m² | +34 m² +49% | 2019 |
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| 53b, Dartmouth Road417 m away | 86 m² | 120 m² | +34 m² +40% | 2019 |
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| 1, Ebsworth Street726 m away | 73 m² | 107 m² | +34 m² +47% | 2018 |
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| 80, Bovill Road710 m away | 76 m² | 110 m² | +34 m² +45% | 2014 |
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| 45, Mayow Road825 m away | 105 m² | 139 m² | +34 m² +32% | 2013 |
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| 29, Hurstbourne Road738 m away | 42 m² | 76 m² | +34 m² +81% | 2011 |
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| 54, Whatman Road843 m away | 92 m² | 125 m² | +33 m² +36% | 2026 |
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| 24, Derby Hill Crescent658 m away | 102 m² | 135 m² | +33 m² +32% | 2023 |
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| 111a, Bovill Road678 m away | 76 m² | 109 m² | +33 m² +43% | 2022 |
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| 26a, Como Road348 m away | 76 m² | 109 m² | +33 m² +43% | 2021 |
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| 35, Acorn Way701 m away | 74 m² | 107 m² | +33 m² +45% | 2021 |
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| 88a, Bovill Road710 m away | 70 m² | 103 m² | +33 m² +47% | 2021 |
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| 31, Dacres Road564 m away | 72 m² | 105 m² | +33 m² +46% | 2019 |
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| 14, Lutwyche Road866 m away | 85 m² | 118 m² | +33 m² +39% | 2017 |
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| Flat 13, Fitzwilliam Heights, 21, Taymount Rise645 m away | 84 m² | 117 m² | +33 m² +39% | 2014 |
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| 101, Bovill Road678 m away | 75 m² | 107 m² | +32 m² +43% | 2025 |
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| 72a, Garthorne Road884 m away | 91 m² | 123 m² | +32 m² +35% | 2024 |
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| 22, Northwood Road917 m away | 135 m² | 167 m² | +32 m² +24% | 2024 |
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| 4, Waldram Park Road137 m away | 40 m² | 72 m² | +32 m² +80% | 2022 |
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| 23a, Ebsworth Street726 m away | 67 m² | 99 m² | +32 m² +48% | 2019 |
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| 3b, Woolstone Road867 m away | 89 m² | 121 m² | +32 m² +36% | 2016 |
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| 20, Trilby Road175 m away | 81 m² | 113 m² | +32 m² +40% | 2014 |
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| 53, Chelsfield Gardens847 m away | 80 m² | 112 m² | +32 m² +40% | 2014 |
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| 33, Dunoon Road914 m away | 128 m² | 159 m² | +31 m² +24% | 2025 |
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| 32, Hyndewood706 m away | 103 m² | 134 m² | +31 m² +30% | 2024 |
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| 42, Trilby Road175 m away | 66 m² | 97 m² | +31 m² +47% | 2021 |
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| 76a, Bovill Road710 m away | 85 m² | 116 m² | +31 m² +36% | 2021 |
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| 76, Cranston Road454 m away | 116 m² | 147 m² | +31 m² +27% | 2015 |
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| 144, Woolstone Road592 m away | 99 m² | 130 m² | +31 m² +31% | 2013 |
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| 30, Cranston Road443 m away | 103 m² | 133 m² | +30 m² +29% | 2026 |
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| Flat 14, Fitzwilliam Heights, 21, Taymount Rise645 m away | 86 m² | 116 m² | +30 m² +35% | 2025 |
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| Flat 15, Drakes Court, Devonshire Road523 m away | 45 m² | 75 m² | +30 m² +67% | 2024 |
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| 36, Vestris Road235 m away | 69 m² | 99 m² | +30 m² +43% | 2023 |
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| 53, Siddons Road367 m away | 112 m² | 142 m² | +30 m² +27% | 2023 |
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| 49, Boveney Road958 m away | 104 m² | 134 m² | +30 m² +29% | 2023 |
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| 47, Garthorne Road703 m away | 88 m² | 118 m² | +30 m² +34% | 2022 |
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| 62, Garthorne Road884 m away | 92 m² | 122 m² | +30 m² +33% | 2022 |
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| 84, Colfe Road298 m away | 96 m² | 126 m² | +30 m² +31% | 2014 |
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| Flat 4, 111, Dartmouth Road640 m away | 42 m² | 72 m² | +30 m² +71% | 2013 |
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| 90a, Hurstbourne Road737 m away | 57 m² | 87 m² | +30 m² +53% | 2012 |
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| 1a, Lutwyche Road866 m away | 81 m² | 110 m² | +29 m² +36% | 2026 |
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| 59, Vancouver Road604 m away | 123 m² | 152 m² | +29 m² +24% | 2025 |
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| 117, Kilmorie Road608 m away | 115 m² | 144 m² | +29 m² +25% | 2024 |
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| 10, Neuchatel Road976 m away | 103 m² | 132 m² | +29 m² +28% | 2024 |
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| 23b, Church Rise0 m away | 123 m² | 152 m² | +29 m² +24% | 2022 |
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| 73a, Elsinore Road649 m away | 77 m² | 106 m² | +29 m² +38% | 2022 |
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| 5a, Ebsworth Street726 m away | 71 m² | 100 m² | +29 m² +41% | 2021 |
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| 71, Beadnell Road504 m away | 79 m² | 108 m² | +29 m² +37% | 2020 |
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| 6a, Ebsworth Street762 m away | 71 m² | 100 m² | +29 m² +41% | 2020 |
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| 45, Thorpewood Avenue728 m away | 110 m² | 139 m² | +29 m² +26% | 2019 |
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| 6, Carholme Road957 m away | 67 m² | 96 m² | +29 m² +43% | 2019 |
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| Flat 4, 40 - 42, Ewelme Road611 m away | 36 m² | 65 m² | +29 m² +81% | 2016 |
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| 81, Queenswood Road854 m away | 127 m² | 155 m² | +28 m² +22% | 2026 |
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| 9, Lutwyche Road866 m away | 86 m² | 114 m² | +28 m² +33% | 2025 |
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| 22, Agnew Road904 m away | 138 m² | 166 m² | +28 m² +20% | 2025 |
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| Flat 9, Wenlock House, 41, Stanstead Road277 m away | 55 m² | 83 m² | +28 m² +51% | 2024 |
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| 6, Rojack Road314 m away | 84 m² | 112 m² | +28 m² +33% | 2024 |
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| 25b, Ackroyd Road925 m away | 39 m² | 67 m² | +28 m² +72% | 2021 |
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