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 8QX
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 |
|---|---|---|---|---|
| 46, Tongdean Avenue974 m away | 350 m² | 667 m² | +317 m² +91% | 2018 |
| 41, Withdean Road464 m away | 180 m² | 424 m² | +244 m² +136% | 2016 |
| 6, Dyke Close969 m away | 214 m² | 451 m² | +237 m² +111% | 2014 |
| 9, Withdean Crescent482 m away | 137 m² | 337 m² | +200 m² +146% | 2013 |
| 79, Wayland Avenue682 m away | 142 m² | 304 m² | +162 m² +114% | 2026 |
| 97, Wayland Avenue682 m away | 110 m² | 270 m² | +160 m² +145% | 2014 |
| 39, Withdean Road464 m away | 229 m² | 388 m² | +159 m² +69% | 2024 |
| 24, Peacock Lane496 m away | 116 m² | 274 m² | +158 m² +136% | 2023 |
| 107, Wayland Avenue682 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.
| 138 m² |
| 290 m² |
| +152 m² +110% |
| 2025 |
| 55, Old Mill Close621 m away | 98 m² | 245 m² | +147 m² +150% | 2021 |
|---|
| 6, Varndean Road784 m away | 114 m² | 258 m² | +144 m² +126% | 2022 |
|---|
| 29, Brangwyn Drive647 m away | 134 m² | 276 m² | +142 m² +106% | 2022 |
|---|
| 87, Tongdean Lane664 m away | 140 m² | 268 m² | +128 m² +91% | 2019 |
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| 3, Shepherds Croft501 m away | 108 m² | 235 m² | +127 m² +118% | 2016 |
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| 24, Tongdean Rise586 m away | 116 m² | 242 m² | +126 m² +109% | 2017 |
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| 28, Ridgeside Avenue518 m away | 82 m² | 204 m² | +122 m² +149% | 2022 |
|---|
| 29, Brangwyn Avenue750 m away | 157 m² | 276 m² | +119 m² +76% | 2022 |
|---|
| 1, Elms Lea Avenue762 m away | 157 m² | 275 m² | +118 m² +75% | 2023 |
|---|
| 51, Redhill Drive580 m away | 105 m² | 223 m² | +118 m² +112% | 2012 |
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| 93, Wayland Avenue682 m away | 139 m² | 255 m² | +116 m² +83% | 2020 |
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| 140, Carden Avenue992 m away | 103 m² | 217 m² | +114 m² +111% | 2025 |
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| 4, Barrowfield Close955 m away | 116 m² | 225 m² | +109 m² +94% | 2016 |
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| 85, Valley Drive850 m away | 72 m² | 180 m² | +108 m² +150% | 2022 |
|---|
| 9, Cedars Gardens480 m away | 135 m² | 241 m² | +106 m² +79% | 2018 |
|---|
| 4, Redhill Drive867 m away | 131 m² | 234 m² | +103 m² +79% | 2016 |
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| 109, Windmill Drive951 m away | 75 m² | 177 m² | +102 m² +136% | 2014 |
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| 13, Cedars Gardens480 m away | 113 m² | 214 m² | +101 m² +89% | 2025 |
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| 19, Tongdean Rise586 m away | 120 m² | 221 m² | +101 m² +84% | 2017 |
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| 40, Ridgeside Avenue518 m away | 84 m² | 185 m² | +101 m² +120% | 2016 |
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| 3, Wayland Avenue604 m away | 113 m² | 210 m² | +97 m² +86% | 2023 |
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| 40, Withdean Road709 m away | 329 m² | 424 m² | +95 m² +29% | 2016 |
|---|
| 9, The Beeches665 m away | 110 m² | 203 m² | +93 m² +85% | 2021 |
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| 53, Dyke Road Avenue785 m away | 212 m² | 304 m² | +92 m² +43% | 2023 |
|---|
| 4, Brangwyn Crescent930 m away | 141 m² | 232 m² | +91 m² +65% | 2018 |
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| 55, Tongdean Avenue974 m away | 521 m² | 609 m² | +88 m² +17% | 2024 |
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| 42, Dyke Road Avenue759 m away | 337 m² | 425 m² | +88 m² +26% | 2020 |
|---|
| 20, Woodlands914 m away | 186 m² | 273 m² | +87 m² +47% | 2023 |
|---|
| 77, Peacock Lane496 m away | 154 m² | 241 m² | +87 m² +56% | 2022 |
|---|
| 32, The Park Apartments, London Road140 m away | 70 m² | 157 m² | +87 m² +124% | 2019 |
|---|
| 105, Tivoli Crescent North971 m away | 93 m² | 179 m² | +86 m² +92% | 2015 |
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| 54, Windmill Drive942 m away | 73 m² | 157 m² | +84 m² +115% | 2013 |
|---|
| 182, Tivoli Crescent North971 m away | 164 m² | 247 m² | +83 m² +51% | 2022 |
|---|
| 9, Woodside Avenue994 m away | 116 m² | 197 m² | +81 m² +70% | 2026 |
|---|
| 20, Peacock Lane496 m away | 148 m² | 229 m² | +81 m² +55% | 2021 |
|---|
| 35, Withdean Crescent482 m away | 129 m² | 210 m² | +81 m² +63% | 2017 |
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| 39, Westdene Drive918 m away | 78 m² | 159 m² | +81 m² +104% | 2015 |
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| 32, Highbank762 m away | 114 m² | 194 m² | +80 m² +70% | 2019 |
|---|
| 49, Tongdean Avenue974 m away | 150 m² | 230 m² | +80 m² +53% | 2016 |
|---|
| 10, Withdean Road709 m away | 203 m² | 282 m² | +79 m² +39% | 2022 |
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| 36, Withdean Road709 m away | 300 m² | 379 m² | +79 m² +26% | 2011 |
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| 2a, Colebrook Road278 m away | 95 m² | 173 m² | +78 m² +82% | 2014 |
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| 65, Surrenden Road968 m away | 101 m² | 178 m² | +77 m² +76% | 2012 |
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| 90, Wayland Avenue686 m away | 88 m² | 164 m² | +76 m² +86% | 2024 |
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| 49, Hillcrest612 m away | 69 m² | 145 m² | +76 m² +110% | 2017 |
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| 45, Hillcrest612 m away | 65 m² | 140 m² | +75 m² +115% | 2015 |
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| 16, Brangwyn Way650 m away | 195 m² | 269 m² | +74 m² +38% | 2022 |
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| 34, Dyke Road Avenue726 m away | 412 m² | 486 m² | +74 m² +18% | 2022 |
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| 30, Brangwyn Drive690 m away | 134 m² | 207 m² | +73 m² +54% | 2026 |
|---|
| 6, The Spinney809 m away | 268 m² | 341 m² | +73 m² +27% | 2026 |
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| 45, Millcroft908 m away | 80 m² | 153 m² | +73 m² +91% | 2017 |
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| 58, Wayland Avenue686 m away | 115 m² | 187 m² | +72 m² +63% | 2022 |
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| 66, Valley Drive618 m away | 83 m² | 155 m² | +72 m² +87% | 2018 |
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| 81, Valley Drive850 m away | 92 m² | 164 m² | +72 m² +78% | 2016 |
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| 14, Shepherds Croft501 m away | 113 m² | 184 m² | +71 m² +63% | 2014 |
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| 3, Deneside686 m away | 70 m² | 140 m² | +70 m² +100% | 2025 |
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| 11, Surrenden Close902 m away | 205 m² | 274 m² | +69 m² +34% | 2022 |
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| 4, Overhill Drive713 m away | 83 m² | 152 m² | +69 m² +83% | 2016 |
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| 10, Peacock Lane496 m away | 156 m² | 225 m² | +69 m² +44% | 2015 |
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| 5, Withdean Court Avenue378 m away | 234 m² | 301 m² | +67 m² +29% | 2022 |
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| 48, Brangwyn Avenue730 m away | 130 m² | 197 m² | +67 m² +52% | 2021 |
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| 16, Mill Rise987 m away | 116 m² | 182 m² | +66 m² +57% | 2019 |
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| 9, Eldred Avenue207 m away | 136 m² | 201 m² | +65 m² +48% | 2026 |
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| Karibu, London Road112 m away | 162 m² | 227 m² | +65 m² +40% | 2025 |
|---|
| 34, Braybon Avenue943 m away | 55 m² | 120 m² | +65 m² +118% | 2023 |
|---|
| 89, Tongdean Lane664 m away | 115 m² | 180 m² | +65 m² +57% | 2020 |
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| 6, Cornwall Gardens891 m away | 146 m² | 211 m² | +65 m² +45% | 2013 |
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| 11, Tongdean Rise586 m away | 127 m² | 191 m² | +64 m² +50% | 2026 |
|---|
| 33, Brangwyn Avenue750 m away | 110 m² | 173 m² | +63 m² +57% | 2019 |
|---|
| 26, Millcroft925 m away | 77 m² | 140 m² | +63 m² +82% | 2018 |
|---|
| 48, Bankside747 m away | 82 m² | 144 m² | +62 m² +76% | 2018 |
|---|
| 59, Withdean Crescent482 m away | 70 m² | 132 m² | +62 m² +89% | 2013 |
|---|
| 70, Windmill Drive942 m away | 122 m² | 183 m² | +61 m² +50% | 2024 |
|---|
| 6, Shepherds Croft501 m away | 160 m² | 221 m² | +61 m² +38% | 2022 |
|---|
| 1, Audrey Close848 m away | 87 m² | 148 m² | +61 m² +70% | 2013 |
|---|
| 3, The Spinney809 m away | 161 m² | 221 m² | +60 m² +37% | 2024 |
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| 10, Redhill Drive867 m away | 147 m² | 207 m² | +60 m² +41% | 2023 |
|---|
| 7, Cedars Gardens480 m away | 162 m² | 221 m² | +59 m² +36% | 2025 |
|---|
| 50, Withdean Crescent494 m away | 201 m² | 260 m² | +59 m² +29% | 2024 |
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| 26, Peacock Lane496 m away | 136 m² | 195 m² | +59 m² +43% | 2024 |
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| 27, Eldred Avenue207 m away | 86 m² | 145 m² | +59 m² +69% | 2020 |
|---|
| 32, Redhill Drive867 m away | 134 m² | 192 m² | +58 m² +43% | 2013 |
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| 130, Valley Drive850 m away | 167 m² | 224 m² | +57 m² +34% | 2025 |
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| 54, Bramble Rise848 m away | 72 m² | 129 m² | +57 m² +79% | 2021 |
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| 2b, Woodbourne Avenue968 m away | 70 m² | 127 m² | +57 m² +81% | 2020 |
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| 158, Tivoli Crescent North971 m away | 135 m² | 192 m² | +57 m² +42% | 2015 |
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| 94, Tongdean Lane664 m away | 208 m² | 263 m² | +55 m² +26% | 2025 |
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| 61, Brangwyn Drive647 m away | 145 m² | 199 m² | +54 m² +37% | 2026 |
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| Cinderford, Cornwall Gardens925 m away | 82 m² | 136 m² | +54 m² +66% | 2025 |
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| 46b, Withdean Road464 m away | 127 m² | 181 m² | +54 m² +43% | 2022 |
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| 15, Tongdean Rise586 m away | 76 m² | 130 m² | +54 m² +71% | 2017 |
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| 6, Overhill Way986 m away | 116 m² | 170 m² | +54 m² +47% | 2015 |
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| 77, Ridgeside Avenue594 m away | 119 m² | 173 m² | +54 m² +45% | 2013 |
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| 86, Wayland Avenue686 m away | 115 m² | 168 m² | +53 m² +46% | 2020 |
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| 9, Shepherds Croft501 m away | 88 m² | 141 m² | +53 m² +60% | 2017 |
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| 80, Graham Avenue878 m away | 100 m² | 153 m² | +53 m² +53% | 2017 |
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| 73, Eldred Avenue534 m away | 87 m² | 140 m² | +53 m² +61% | 2015 |
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| 14, Hillside Way660 m away | 129 m² | 181 m² | +52 m² +40% | 2024 |
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| 75, Redhill Drive580 m away | 112 m² | 164 m² | +52 m² +46% | 2023 |
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| 50, Brangwyn Drive690 m away | 103 m² | 155 m² | +52 m² +50% | 2016 |
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| Flat 28, Mandalay Court, London Road39 m away | 74 m² | 126 m² | +52 m² +70% | 2014 |
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| 47, Braybon Avenue950 m away | 99 m² | 150 m² | +51 m² +52% | 2022 |
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| 8, Woodside Avenue994 m away | 51 m² | 102 m² | +51 m² +100% | 2021 |
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| 73, Valley Drive850 m away | 104 m² | 154 m² | +50 m² +48% | 2023 |
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| 51, Surrenden Crescent645 m away | 137 m² | 186 m² | +49 m² +36% | 2026 |
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| 27, Beechwood Close970 m away | 86 m² | 135 m² | +49 m² +57% | 2025 |
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| 5, Downside594 m away | 106 m² | 155 m² | +49 m² +46% | 2022 |
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| 50, Carden Avenue806 m away | 126 m² | 175 m² | +49 m² +39% | 2018 |
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| 8, Colebrook Road278 m away | 215 m² | 263 m² | +48 m² +22% | 2024 |
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| 49, Wayland Avenue682 m away | 112 m² | 160 m² | +48 m² +43% | 2022 |
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| 5, Woodlands914 m away | 139 m² | 187 m² | +48 m² +35% | 2022 |
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| 24, Mill Rise987 m away | 73 m² | 121 m² | +48 m² +66% | 2022 |
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| 63, Brangwyn Drive647 m away | 102 m² | 150 m² | +48 m² +47% | 2020 |
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| 50, Barn Rise512 m away | 48 m² | 95 m² | +47 m² +98% | 2025 |
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| 4, Cedars Gardens480 m away | 200 m² | 247 m² | +47 m² +24% | 2023 |
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| 17, Overhill Way986 m away | 111 m² | 158 m² | +47 m² +42% | 2022 |
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| 46, Redhill Drive580 m away | 112 m² | 159 m² | +47 m² +42% | 2015 |
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| 1a, Surrenden Close902 m away | 113 m² | 159 m² | +46 m² +41% | 2022 |
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| 58, Ridgeside Avenue518 m away | 131 m² | 177 m² | +46 m² +35% | 2016 |
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| 4, Dyke Close969 m away | 245 m² | 290 m² | +45 m² +18% | 2025 |
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| 20, Gableson Avenue939 m away | 83 m² | 128 m² | +45 m² +54% | 2017 |
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| 60, Wayland Avenue686 m away | 195 m² | 239 m² | +44 m² +23% | 2026 |
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| 13, Colebrook Road278 m away | 177 m² | 221 m² | +44 m² +25% | 2022 |
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| 97, Valley Drive850 m away | 130 m² | 174 m² | +44 m² +34% | 2021 |
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| 30, Redhill Drive867 m away | 103 m² | 147 m² | +44 m² +43% | 2018 |
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| 3, Withdean Rise318 m away | 121 m² | 164 m² | +43 m² +36% | 2023 |
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| 25, Braybon Avenue950 m away | 99 m² | 141 m² | +42 m² +42% | 2014 |
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| 135, Carden Avenue992 m away | 161 m² | 202 m² | +41 m² +25% | 2025 |
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| 48, Surrenden Crescent440 m away | 174 m² | 215 m² | +41 m² +24% | 2022 |
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| 37, Withdean Crescent482 m away | 178 m² | 219 m² | +41 m² +23% | 2016 |
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| 3, Millcroft908 m away | 98 m² | 139 m² | +41 m² +42% | 2016 |
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| 5, Barrowfield Drive976 m away | 179 m² | 219 m² | +40 m² +22% | 2020 |
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| 38a, Whittingehame Gardens988 m away | 165 m² | 205 m² | +40 m² +24% | 2013 |
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| 56, Overhill Drive885 m away | 121 m² | 160 m² | +39 m² +32% | 2026 |
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| 41, Woodbourne Avenue968 m away | 45 m² | 84 m² | +39 m² +87% | 2026 |
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| 5, The Close390 m away | 111 m² | 150 m² | +39 m² +35% | 2023 |
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| 12, Woodside Avenue994 m away | 129 m² | 168 m² | +39 m² +30% | 2021 |
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| 11, Redhill Drive867 m away | 122 m² | 161 m² | +39 m² +32% | 2019 |
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| 16, Varndean Gardens627 m away | 231 m² | 270 m² | +39 m² +17% | 2018 |
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| 20, Downside594 m away | 97 m² | 135 m² | +38 m² +39% | 2020 |
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| 31, Tongdean Lane282 m away | 183 m² | 220 m² | +37 m² +20% | 2023 |
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| 32, Overhill Drive713 m away | 136 m² | 173 m² | +37 m² +27% | 2023 |
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| 2, Yorklands980 m away | 202 m² | 239 m² | +37 m² +18% | 2022 |
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| 32, Ridgeside Avenue518 m away | 87 m² | 124 m² | +37 m² +43% | 2019 |
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| 38, Overhill Way986 m away | 95 m² | 132 m² | +37 m² +39% | 2019 |
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| 55, Surrenden Crescent645 m away | 140 m² | 177 m² | +37 m² +26% | 2017 |
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| 48, Highbank762 m away | 92 m² | 129 m² | +37 m² +40% | 2017 |
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| 50, Bankside747 m away | 127 m² | 164 m² | +37 m² +29% | 2013 |
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| 70, Cliveden Court, Cliveden Close774 m away | 60 m² | 96 m² | +36 m² +60% | 2023 |
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| 13, Woodbourne Avenue968 m away | 48 m² | 84 m² | +36 m² +75% | 2023 |
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| 53, Surrenden Crescent645 m away | 199 m² | 235 m² | +36 m² +18% | 2020 |
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| 22, Barn Rise512 m away | 67 m² | 103 m² | +36 m² +54% | 2017 |
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| 11, The Woodlands499 m away | 127 m² | 163 m² | +36 m² +28% | 2016 |
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| 86, Overhill Drive885 m away | 57 m² | 93 m² | +36 m² +63% | 2015 |
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| 63, Bramble Rise839 m away | 116 m² | 152 m² | +36 m² +31% | 2013 |
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| 20, Bramble Rise848 m away | 72 m² | 108 m² | +36 m² +50% | 2013 |
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| 46, Withdean Crescent494 m away | 196 m² | 231 m² | +35 m² +18% | 2025 |
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| 7, Wayland Avenue604 m away | 177 m² | 212 m² | +35 m² +20% | 2018 |
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| 53, Brangwyn Drive647 m away | 105 m² | 140 m² | +35 m² +33% | 2018 |
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| 45, Overhill Way986 m away | 96 m² | 130 m² | +34 m² +35% | 2026 |
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| 17, Redhill Close761 m away | 83 m² | 117 m² | +34 m² +41% | 2023 |
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| 13, Bramble Rise839 m away | 97 m² | 131 m² | +34 m² +35% | 2021 |
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| 28, Brangwyn Drive690 m away | 105 m² | 139 m² | +34 m² +32% | 2016 |
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| 20, Windmill Drive991 m away | 89 m² | 123 m² | +34 m² +38% | 2015 |
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| 40, Fernwood Rise812 m away | 80 m² | 114 m² | +34 m² +43% | 2014 |
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| 1, Old Court Close763 m away | 92 m² | 125 m² | +33 m² +36% | 2023 |
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| 25, Woodbourne Avenue968 m away | 57 m² | 90 m² | +33 m² +58% | 2023 |
|---|
| 44, Graham Avenue878 m away | 110 m² | 143 m² | +33 m² +30% | 2022 |
|---|
| 42, Graham Avenue878 m away | 107 m² | 140 m² | +33 m² +31% | 2021 |
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| 15, Brangwyn Way650 m away | 167 m² | 200 m² | +33 m² +20% | 2018 |
|---|
| 27, Brangwyn Drive647 m away | 137 m² | 170 m² | +33 m² +24% | 2015 |
|---|
| 11, Woodlands914 m away | 186 m² | 218 m² | +32 m² +17% | 2020 |
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| 12, Valley Drive403 m away | 112 m² | 144 m² | +32 m² +29% | 2016 |
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| 24, Millcroft925 m away | 111 m² | 142 m² | +31 m² +28% | 2026 |
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| 95, Tivoli Crescent North971 m away | 104 m² | 135 m² | +31 m² +30% | 2025 |
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| 88, Wayland Avenue686 m away | 144 m² | 175 m² | +31 m² +22% | 2022 |
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| 78, Wayland Avenue686 m away | 122 m² | 153 m² | +31 m² +25% | 2019 |
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| 10, Highbank762 m away | 90 m² | 120 m² | +30 m² +33% | 2026 |
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| 55, Wayland Avenue682 m away | 115 m² | 145 m² | +30 m² +26% | 2025 |
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| 56, Highbank762 m away | 95 m² | 125 m² | +30 m² +32% | 2025 |
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| 9, Elms Lea Avenue762 m away | 158 m² | 188 m² | +30 m² +19% | 2013 |
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| 51, Surrenden Road968 m away | 136 m² | 166 m² | +30 m² +22% | 2013 |
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| 2, Bramble Rise848 m away | 85 m² | 114 m² | +29 m² +34% | 2022 |
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| 1, Colebrook Cottages, Colebrook Road278 m away | 131 m² | 160 m² | +29 m² +22% | 2021 |
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| 72, Mill Rise738 m away | 92 m² | 121 m² | +29 m² +32% | 2020 |
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| 33, Graham Avenue859 m away | 89 m² | 118 m² | +29 m² +33% | 2020 |
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| 5, Hazeldene Meads765 m away | 161 m² | 190 m² | +29 m² +18% | 2019 |
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| 14, Woodbourne Avenue968 m away | 58 m² | 86 m² | +28 m² +48% | 2025 |
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| 57, Eldred Avenue534 m away | 65 m² | 93 m² | +28 m² +43% | 2024 |
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| 53, Dene Vale434 m away | 101 m² | 129 m² | +28 m² +28% | 2023 |
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| 91, Peacock Lane496 m away | 174 m² | 202 m² | +28 m² +16% | 2023 |
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