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 BN1 5EP
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 |
|---|---|---|---|---|
| 55, Old Mill Close688 m away | 98 m² | 245 m² | +147 m² +150% | 2021 |
| 140, Valley Drive946 m away | 162 m² | 307 m² | +145 m² +90% | 2025 |
| 29, Brangwyn Drive319 m away | 134 m² | 276 m² | +142 m² +106% | 2022 |
| 87, Tongdean Lane880 m away | 140 m² | 268 m² | +128 m² +91% | 2019 |
| 24, Tongdean Rise926 m away | 116 m² | 242 m² | +126 m² +109% | 2017 |
| 139, Vale Avenue805 m away | 99 m² | 222 m² | +123 m² +124% | 2024 |
| 28, Ridgeside Avenue702 m away | 82 m² | 204 m² | +122 m² +149% | 2022 |
| 29, Brangwyn Avenue350 m away | 157 m² | 276 m² | +119 m² +76% | 2022 |
| 51, Redhill Drive630 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.
| 105 m² |
| 223 m² |
| +118 m² +112% |
| 2012 |
| 15, Court Close698 m away | 105 m² | 214 m² | +109 m² +104% | 2013 |
|---|
| 85, Valley Drive856 m away | 72 m² | 180 m² | +108 m² +150% | 2022 |
|---|
| 4, Redhill Drive771 m away | 131 m² | 234 m² | +103 m² +79% | 2016 |
|---|
| 109, Windmill Drive151 m away | 75 m² | 177 m² | +102 m² +136% | 2014 |
|---|
| 19, Tongdean Rise926 m away | 120 m² | 221 m² | +101 m² +84% | 2017 |
|---|
| 40, Ridgeside Avenue702 m away | 84 m² | 185 m² | +101 m² +120% | 2016 |
|---|
| 4, Green Ridge979 m away | 74 m² | 171 m² | +97 m² +131% | 2015 |
|---|
| 4, Brangwyn Crescent325 m away | 141 m² | 232 m² | +91 m² +65% | 2018 |
|---|
| 32, The Park Apartments, London Road952 m away | 70 m² | 157 m² | +87 m² +124% | 2019 |
|---|
| 6, Winfield Avenue900 m away | 73 m² | 159 m² | +86 m² +118% | 2024 |
|---|
| 54, Windmill Drive132 m away | 73 m² | 157 m² | +84 m² +115% | 2013 |
|---|
| 74, Green Ridge758 m away | 112 m² | 195 m² | +83 m² +74% | 2026 |
|---|
| 39, Westdene Drive545 m away | 78 m² | 159 m² | +81 m² +104% | 2015 |
|---|
| 32, Highbank241 m away | 114 m² | 194 m² | +80 m² +70% | 2019 |
|---|
| 37, Glen Rise804 m away | 81 m² | 160 m² | +79 m² +98% | 2025 |
|---|
| 95, Green Ridge767 m away | 99 m² | 177 m² | +78 m² +79% | 2022 |
|---|
| 2a, Colebrook Road712 m away | 95 m² | 173 m² | +78 m² +82% | 2014 |
|---|
| 8, Winfield Avenue900 m away | 72 m² | 149 m² | +77 m² +107% | 2017 |
|---|
| 90, Wayland Avenue987 m away | 88 m² | 164 m² | +76 m² +86% | 2024 |
|---|
| 49, Hillcrest560 m away | 69 m² | 145 m² | +76 m² +110% | 2017 |
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| 45, Hillcrest560 m away | 65 m² | 140 m² | +75 m² +115% | 2015 |
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| 16, Brangwyn Way444 m away | 195 m² | 269 m² | +74 m² +38% | 2022 |
|---|
| 30, Brangwyn Drive335 m away | 134 m² | 207 m² | +73 m² +54% | 2026 |
|---|
| 45, Millcroft634 m away | 80 m² | 153 m² | +73 m² +91% | 2017 |
|---|
| 36, Green Ridge979 m away | 162 m² | 234 m² | +72 m² +44% | 2022 |
|---|
| 58, Wayland Avenue987 m away | 115 m² | 187 m² | +72 m² +63% | 2022 |
|---|
| 66, Valley Drive777 m away | 83 m² | 155 m² | +72 m² +87% | 2018 |
|---|
| 81, Valley Drive856 m away | 92 m² | 164 m² | +72 m² +78% | 2016 |
|---|
| 3, Deneside141 m away | 70 m² | 140 m² | +70 m² +100% | 2025 |
|---|
| 148, Valley Drive946 m away | 113 m² | 183 m² | +70 m² +62% | 2020 |
|---|
| 4, Overhill Drive812 m away | 83 m² | 152 m² | +69 m² +83% | 2016 |
|---|
| 48, Brangwyn Avenue390 m away | 130 m² | 197 m² | +67 m² +52% | 2021 |
|---|
| 16, Mill Rise490 m away | 116 m² | 182 m² | +66 m² +57% | 2019 |
|---|
| 9, Eldred Avenue625 m away | 136 m² | 201 m² | +65 m² +48% | 2026 |
|---|
| Karibu, London Road918 m away | 162 m² | 227 m² | +65 m² +40% | 2025 |
|---|
| 89, Tongdean Lane880 m away | 115 m² | 180 m² | +65 m² +57% | 2020 |
|---|
| 11, Tongdean Rise926 m away | 127 m² | 191 m² | +64 m² +50% | 2026 |
|---|
| 33, Brangwyn Avenue350 m away | 110 m² | 173 m² | +63 m² +57% | 2019 |
|---|
| 26, Millcroft598 m away | 77 m² | 140 m² | +63 m² +82% | 2018 |
|---|
| 48, Bankside288 m away | 82 m² | 144 m² | +62 m² +76% | 2018 |
|---|
| 70, Windmill Drive132 m away | 122 m² | 183 m² | +61 m² +50% | 2024 |
|---|
| 1, Audrey Close625 m away | 87 m² | 148 m² | +61 m² +70% | 2013 |
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| 10, Redhill Drive771 m away | 147 m² | 207 m² | +60 m² +41% | 2023 |
|---|
| 27, Eldred Avenue625 m away | 86 m² | 145 m² | +59 m² +69% | 2020 |
|---|
| 32, Redhill Drive771 m away | 134 m² | 192 m² | +58 m² +43% | 2013 |
|---|
| 130, Valley Drive856 m away | 167 m² | 224 m² | +57 m² +34% | 2025 |
|---|
| 54, Green Ridge758 m away | 71 m² | 128 m² | +57 m² +80% | 2024 |
|---|
| 54, Bramble Rise209 m away | 72 m² | 129 m² | +57 m² +79% | 2021 |
|---|
| 94, Tongdean Lane880 m away | 208 m² | 263 m² | +55 m² +26% | 2025 |
|---|
| 32, Vale Avenue932 m away | 78 m² | 133 m² | +55 m² +71% | 2023 |
|---|
| 57, Millcroft603 m away | 114 m² | 169 m² | +55 m² +48% | 2021 |
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| 26, Highview Way684 m away | 106 m² | 161 m² | +55 m² +52% | 2015 |
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| 61, Brangwyn Drive319 m away | 145 m² | 199 m² | +54 m² +37% | 2026 |
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| 42, Vale Avenue932 m away | 77 m² | 131 m² | +54 m² +70% | 2026 |
|---|
| 35, Glen Rise804 m away | 94 m² | 148 m² | +54 m² +57% | 2019 |
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| 15, Tongdean Rise926 m away | 76 m² | 130 m² | +54 m² +71% | 2017 |
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| 6, Overhill Way700 m away | 116 m² | 170 m² | +54 m² +47% | 2015 |
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| 77, Ridgeside Avenue630 m away | 119 m² | 173 m² | +54 m² +45% | 2013 |
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| 86, Wayland Avenue987 m away | 115 m² | 168 m² | +53 m² +46% | 2020 |
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| 73, Eldred Avenue290 m away | 87 m² | 140 m² | +53 m² +61% | 2015 |
|---|
| 14, Hillside Way850 m away | 129 m² | 181 m² | +52 m² +40% | 2024 |
|---|
| 75, Redhill Drive630 m away | 112 m² | 164 m² | +52 m² +46% | 2023 |
|---|
| 50, Brangwyn Drive335 m away | 103 m² | 155 m² | +52 m² +50% | 2016 |
|---|
| Flat 28, Mandalay Court, London Road779 m away | 74 m² | 126 m² | +52 m² +70% | 2014 |
|---|
| 58, Green Ridge758 m away | 80 m² | 131 m² | +51 m² +64% | 2015 |
|---|
| 73, Valley Drive856 m away | 104 m² | 154 m² | +50 m² +48% | 2023 |
|---|
| 46, Vale Avenue932 m away | 79 m² | 128 m² | +49 m² +62% | 2023 |
|---|
| 5, Downside222 m away | 106 m² | 155 m² | +49 m² +46% | 2022 |
|---|
| 50, Carden Avenue927 m away | 126 m² | 175 m² | +49 m² +39% | 2018 |
|---|
| 48, Millcroft603 m away | 90 m² | 139 m² | +49 m² +54% | 2017 |
|---|
| 8, Colebrook Road712 m away | 215 m² | 263 m² | +48 m² +22% | 2024 |
|---|
| 24, Mill Rise490 m away | 73 m² | 121 m² | +48 m² +66% | 2022 |
|---|
| 63, Brangwyn Drive319 m away | 102 m² | 150 m² | +48 m² +47% | 2020 |
|---|
| 50, Barn Rise314 m away | 48 m² | 95 m² | +47 m² +98% | 2025 |
|---|
| 17, Overhill Way700 m away | 111 m² | 158 m² | +47 m² +42% | 2022 |
|---|
| 46, Redhill Drive630 m away | 112 m² | 159 m² | +47 m² +42% | 2015 |
|---|
| 68, Green Ridge758 m away | 116 m² | 162 m² | +46 m² +40% | 2021 |
|---|
| 58, Ridgeside Avenue702 m away | 131 m² | 177 m² | +46 m² +35% | 2016 |
|---|
| 20, Gableson Avenue942 m away | 83 m² | 128 m² | +45 m² +54% | 2017 |
|---|
| 60, Wayland Avenue987 m away | 195 m² | 239 m² | +44 m² +23% | 2026 |
|---|
| 13, Colebrook Road712 m away | 177 m² | 221 m² | +44 m² +25% | 2022 |
|---|
| 97, Valley Drive856 m away | 130 m² | 174 m² | +44 m² +34% | 2021 |
|---|
| 30, Redhill Drive771 m away | 103 m² | 147 m² | +44 m² +43% | 2018 |
|---|
| 6, Glen Rise801 m away | 139 m² | 182 m² | +43 m² +31% | 2013 |
|---|
| 17, Court Close698 m away | 141 m² | 183 m² | +42 m² +30% | 2016 |
|---|
| 3, Millcroft634 m away | 98 m² | 139 m² | +41 m² +42% | 2016 |
|---|
| 17, Highview Way684 m away | 71 m² | 111 m² | +40 m² +56% | 2025 |
|---|
| 56, Overhill Drive795 m away | 121 m² | 160 m² | +39 m² +32% | 2026 |
|---|
| 5, The Close486 m away | 111 m² | 150 m² | +39 m² +35% | 2023 |
|---|
| 11, Redhill Drive771 m away | 122 m² | 161 m² | +39 m² +32% | 2019 |
|---|
| 149b, Vale Avenue805 m away | 145 m² | 184 m² | +39 m² +27% | 2017 |
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| 20, Downside222 m away | 97 m² | 135 m² | +38 m² +39% | 2020 |
|---|
| 8, Highview Road724 m away | 95 m² | 132 m² | +37 m² +39% | 2024 |
|---|
| 32, Overhill Drive812 m away | 136 m² | 173 m² | +37 m² +27% | 2023 |
|---|
| 31, Tongdean Lane864 m away | 183 m² | 220 m² | +37 m² +20% | 2023 |
|---|
| 38, Overhill Way700 m away | 95 m² | 132 m² | +37 m² +39% | 2019 |
|---|
| 32, Ridgeside Avenue702 m away | 87 m² | 124 m² | +37 m² +43% | 2019 |
|---|
| 48, Highbank241 m away | 92 m² | 129 m² | +37 m² +40% | 2017 |
|---|
| 56, Vale Avenue932 m away | 87 m² | 124 m² | +37 m² +43% | 2017 |
|---|
| 50, Bankside288 m away | 127 m² | 164 m² | +37 m² +29% | 2013 |
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| 22, Barn Rise314 m away | 67 m² | 103 m² | +36 m² +54% | 2017 |
|---|
| 11, The Woodlands575 m away | 127 m² | 163 m² | +36 m² +28% | 2016 |
|---|
| 86, Overhill Drive795 m away | 57 m² | 93 m² | +36 m² +63% | 2015 |
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| 20, Bramble Rise209 m away | 72 m² | 108 m² | +36 m² +50% | 2013 |
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| 63, Bramble Rise246 m away | 116 m² | 152 m² | +36 m² +31% | 2013 |
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| 53, Brangwyn Drive319 m away | 105 m² | 140 m² | +35 m² +33% | 2018 |
|---|
| 45, Overhill Way700 m away | 96 m² | 130 m² | +34 m² +35% | 2026 |
|---|
| 17, Redhill Close651 m away | 83 m² | 117 m² | +34 m² +41% | 2023 |
|---|
| 13, Bramble Rise246 m away | 97 m² | 131 m² | +34 m² +35% | 2021 |
|---|
| 28, Brangwyn Drive335 m away | 105 m² | 139 m² | +34 m² +32% | 2016 |
|---|
| 20, Windmill Drive338 m away | 89 m² | 123 m² | +34 m² +38% | 2015 |
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| 40, Fernwood Rise0 m away | 80 m² | 114 m² | +34 m² +43% | 2014 |
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| 15, Brangwyn Way444 m away | 167 m² | 200 m² | +33 m² +20% | 2018 |
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| 19, Vale Avenue884 m away | 82 m² | 115 m² | +33 m² +40% | 2017 |
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| 27, Brangwyn Drive319 m away | 137 m² | 170 m² | +33 m² +24% | 2015 |
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| 12, Valley Drive773 m away | 112 m² | 144 m² | +32 m² +29% | 2016 |
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| 24, Millcroft598 m away | 111 m² | 142 m² | +31 m² +28% | 2026 |
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| 88, Wayland Avenue987 m away | 144 m² | 175 m² | +31 m² +22% | 2022 |
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| 78, Wayland Avenue987 m away | 122 m² | 153 m² | +31 m² +25% | 2019 |
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| 10, Highbank241 m away | 90 m² | 120 m² | +30 m² +33% | 2026 |
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| 56, Highbank241 m away | 95 m² | 125 m² | +30 m² +32% | 2025 |
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| 2, Bramble Rise209 m away | 85 m² | 114 m² | +29 m² +34% | 2022 |
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| 1, Colebrook Cottages, Colebrook Road712 m away | 131 m² | 160 m² | +29 m² +22% | 2021 |
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| 72, Mill Rise459 m away | 92 m² | 121 m² | +29 m² +32% | 2020 |
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| 57, Eldred Avenue290 m away | 65 m² | 93 m² | +28 m² +43% | 2024 |
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| 53, Dene Vale416 m away | 101 m² | 129 m² | +28 m² +28% | 2023 |
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| 134, Valley Drive856 m away | 112 m² | 140 m² | +28 m² +25% | 2021 |
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| 84, Overhill Drive795 m away | 101 m² | 129 m² | +28 m² +28% | 2019 |
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| 27, Old London Road534 m away | 39 m² | 66 m² | +27 m² +69% | 2023 |
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| 127, Windmill Drive151 m away | 96 m² | 123 m² | +27 m² +28% | 2015 |
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| 34, Ladies Mile Road782 m away | 134 m² | 161 m² | +27 m² +20% | 2015 |
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| 39, Copse Hill267 m away | 80 m² | 106 m² | +26 m² +33% | 2025 |
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| 32, Millcroft598 m away | 72 m² | 98 m² | +26 m² +36% | 2014 |
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| 2, Glen Rise801 m away | 115 m² | 141 m² | +26 m² +23% | 2012 |
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| 19, South Woodlands652 m away | 139 m² | 164 m² | +25 m² +18% | 2025 |
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| 48, Bramble Rise209 m away | 119 m² | 144 m² | +25 m² +21% | 2023 |
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| 66, Highbank241 m away | 130 m² | 155 m² | +25 m² +19% | 2022 |
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| 54, Highbank241 m away | 90 m² | 115 m² | +25 m² +28% | 2021 |
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| Flat 4, Ashburnham House, 24 - 32, Old London Road572 m away | 56 m² | 81 m² | +25 m² +45% | 2020 |
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| 68, Windmill Drive132 m away | 148 m² | 173 m² | +25 m² +17% | 2015 |
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| 10, Hillcrest518 m away | 116 m² | 140 m² | +24 m² +21% | 2025 |
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| 81, Vale Avenue884 m away | 92 m² | 116 m² | +24 m² +26% | 2024 |
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| 26, Brangwyn Crescent325 m away | 103 m² | 127 m² | +24 m² +23% | 2022 |
|---|
| Flat 105, Windsor Court, Tongdean Lane964 m away | 31 m² | 54 m² | +23 m² +74% | 2022 |
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| 28, Highview Avenue North778 m away | 119 m² | 142 m² | +23 m² +19% | 2021 |
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| 93, Redhill Drive630 m away | 79 m² | 101 m² | +22 m² +28% | 2024 |
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| 11, The Village Barn837 m away | 122 m² | 144 m² | +22 m² +18% | 2019 |
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| 15, Glen Rise804 m away | 124 m² | 146 m² | +22 m² +18% | 2014 |
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| 94, Valley Drive856 m away | 106 m² | 127 m² | +21 m² +20% | 2026 |
|---|
| 1, Overhill Gardens716 m away | 112 m² | 133 m² | +21 m² +19% | 2022 |
|---|
| 20, Fernwood Rise0 m away | 87 m² | 108 m² | +21 m² +24% | 2016 |
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| 27, Valley Drive773 m away | 123 m² | 144 m² | +21 m² +17% | 2011 |
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| 57, Vale Avenue884 m away | 80 m² | 101 m² | +21 m² +26% | 2011 |
|---|
| Flat 1, Ash House, 26, Tongdean Lane880 m away | 25 m² | 45 m² | +20 m² +80% | 2026 |
|---|
| 82, Vale Avenue932 m away | 80 m² | 100 m² | +20 m² +25% | 2021 |
|---|
| 22, Overhill Gardens716 m away | 78 m² | 98 m² | +20 m² +26% | 2018 |
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| Flat 3, Mandalay Court, London Road779 m away | 74 m² | 94 m² | +20 m² +27% | 2016 |
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| 4, Upper Winfield Avenue861 m away | 44 m² | 63 m² | +19 m² +43% | 2021 |
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| 53, Westdene Drive545 m away | 124 m² | 143 m² | +19 m² +15% | 2020 |
|---|
| 2, Brompton Close630 m away | 65 m² | 84 m² | +19 m² +29% | 2011 |
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| 24, Overhill Way700 m away | 80 m² | 97 m² | +17 m² +21% | 2024 |
|---|
| 3, Saxon Way735 m away | 111 m² | 128 m² | +17 m² +15% | 2024 |
|---|
| 10, The Excelsior812 m away | 69 m² | 86 m² | +17 m² +25% | 2021 |
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| 16, Fernwood Rise0 m away | 84 m² | 101 m² | +17 m² +20% | 2020 |
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| 67, Redhill Drive630 m away | 107 m² | 124 m² | +17 m² +16% | 2011 |
|---|
| Flat 82, Windsor Court, Tongdean Lane964 m away | 56 m² | 72 m² | +16 m² +29% | 2022 |
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| Flat E, Upperdene Court, 4, Westdene Drive510 m away | 50 m² | 66 m² | +16 m² +32% | 2020 |
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| 12, Overhill Drive812 m away | 59 m² | 75 m² | +16 m² +27% | 2015 |
|---|
| 46, Overhill Drive812 m away | 103 m² | 119 m² | +16 m² +16% | 2013 |
|---|
| 94, Mill Rise459 m away | 91 m² | 106 m² | +15 m² +16% | 2026 |
|---|
| Flat 97, Windsor Court, Tongdean Lane964 m away | 57 m² | 72 m² | +15 m² +26% | 2022 |
|---|
| Flat 64, Windsor Court, Tongdean Lane964 m away | 57 m² | 72 m² | +15 m² +26% | 2022 |
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| 45, The Park Apartments, London Road952 m away | 49 m² | 64 m² | +15 m² +31% | 2019 |
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