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 4QD
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 |
|---|---|---|---|---|
| 3, Kingscote Way489 m away | 137 m² | 336 m² | +199 m² +145% | 2025 |
| 3, Windlesham Road961 m away | 181 m² | 326 m² | +145 m² +80% | 2016 |
| 11a, Preston Park Avenue466 m away | 112 m² | 252 m² | +140 m² +125% | 2018 |
| 9, Clifton Hill876 m away | 96 m² | 209 m² | +113 m² +118% | 2016 |
| 54, Davigdor Road992 m away | 146 m² | 242 m² | +96 m² +66% | 2024 |
| 68, Beaconsfield Villas953 m away | 63 m² | 157 m² | +94 m² +149% | 2016 |
| 22, Buckingham Place458 m away | 94 m² | 188 m² | +94 m² +100% | 2015 |
| 13, Osmond Gardens906 m away | 70 m² | 157 m² | +87 m² +124% | 2010 |
| Flat 3, 6, Stanford Road428 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.
| 60 m² |
| 146 m² |
| +86 m² +143% |
| 2018 |
| 99a, North Road990 m away | 95 m² | 179 m² | +84 m² +88% | 2020 |
|---|
| 12, Stanley Road243 m away | 95 m² | 178 m² | +83 m² +87% | 2009 |
|---|
| 18, Stanford Road428 m away | 191 m² | 270 m² | +79 m² +41% | 2024 |
|---|
| 203, Ditchling Road847 m away | 69 m² | 144 m² | +75 m² +109% | 2021 |
|---|
| 40, Stanford Road428 m away | 189 m² | 263 m² | +74 m² +39% | 2023 |
|---|
| 33, Lancaster Road510 m away | 115 m² | 188 m² | +73 m² +63% | 2014 |
|---|
| 58, Compton Avenue544 m away | 113 m² | 185 m² | +72 m² +64% | 2023 |
|---|
| 45, Springfield Road390 m away | 206 m² | 278 m² | +72 m² +35% | 2022 |
|---|
| 93, Addison Road899 m away | 110 m² | 179 m² | +69 m² +63% | 2023 |
|---|
| 124, Springfield Road416 m away | 122 m² | 190 m² | +68 m² +56% | 2025 |
|---|
| 11, Rugby Road544 m away | 80 m² | 148 m² | +68 m² +85% | 2024 |
|---|
| 12, Park Crescent Terrace649 m away | 57 m² | 125 m² | +68 m² +119% | 2015 |
|---|
| 26, Osmond Road906 m away | 257 m² | 325 m² | +68 m² +26% | 2013 |
|---|
| 2, Park View Terrace687 m away | 169 m² | 236 m² | +67 m² +40% | 2025 |
|---|
| 47a, Lewes Road959 m away | 82 m² | 147 m² | +65 m² +79% | 2020 |
|---|
| 1, Coleman Street956 m away | 57 m² | 122 m² | +65 m² +114% | 2019 |
|---|
| 12, Stafford Road621 m away | 115 m² | 179 m² | +64 m² +56% | 2018 |
|---|
| 27, Preston Park Avenue765 m away | 85 m² | 148 m² | +63 m² +74% | 2022 |
|---|
| 6, Cleveland Road836 m away | 48 m² | 111 m² | +63 m² +131% | 2013 |
|---|
| 36, Stroudley Road173 m away | 74 m² | 135 m² | +61 m² +82% | 2011 |
|---|
| 50, Colbourne Road956 m away | 82 m² | 142 m² | +60 m² +73% | 2026 |
|---|
| 129, Ditchling Road485 m away | 134 m² | 193 m² | +59 m² +44% | 2023 |
|---|
| 71, Chester Terrace789 m away | 49 m² | 108 m² | +59 m² +120% | 2017 |
|---|
| 36, Beaconsfield Villas655 m away | 191 m² | 249 m² | +58 m² +30% | 2025 |
|---|
| 56, Rugby Road544 m away | 171 m² | 229 m² | +58 m² +34% | 2018 |
|---|
| 2, Crown Gardens970 m away | 52 m² | 109 m² | +57 m² +110% | 2023 |
|---|
| 50, Viaduct Road318 m away | 60 m² | 117 m² | +57 m² +95% | 2020 |
|---|
| 21, Hanover Crescent818 m away | 167 m² | 224 m² | +57 m² +34% | 2020 |
|---|
| 78, Richmond Road857 m away | 93 m² | 150 m² | +57 m² +61% | 2018 |
|---|
| 17, Rugby Road544 m away | 61 m² | 117 m² | +56 m² +92% | 2015 |
|---|
| 9, Princes Crescent611 m away | 39 m² | 95 m² | +56 m² +144% | 2010 |
|---|
| 7, Howard Place407 m away | 51 m² | 107 m² | +56 m² +110% | 2008 |
|---|
| 20, Florence Road471 m away | 259 m² | 314 m² | +55 m² +21% | 2026 |
|---|
| 60, Richmond Road857 m away | 171 m² | 224 m² | +53 m² +31% | 2026 |
|---|
| 66, Beaconsfield Road201 m away | 95 m² | 148 m² | +53 m² +56% | 2019 |
|---|
| 5, Howard Place407 m away | 41 m² | 94 m² | +53 m² +129% | 2018 |
|---|
| 21, Powis Square948 m away | 50 m² | 102 m² | +52 m² +104% | 2021 |
|---|
| 13, Clifton Terrace976 m away | 64 m² | 116 m² | +52 m² +81% | 2020 |
|---|
| 30a, Beaconsfield Villas655 m away | 99 m² | 150 m² | +51 m² +52% | 2019 |
|---|
| First Floor Flat, 21, Alexandra Villas762 m away | 77 m² | 128 m² | +51 m² +66% | 2019 |
|---|
| Flat 5, 10, Preston Park Avenue466 m away | 59 m² | 110 m² | +51 m² +86% | 2014 |
|---|
| 2, Guildford Street693 m away | 58 m² | 109 m² | +51 m² +88% | 2010 |
|---|
| 11, Dyke Road Drive343 m away | 106 m² | 156 m² | +50 m² +47% | 2026 |
|---|
| 22a, Campbell Road0 m away | 65 m² | 115 m² | +50 m² +77% | 2020 |
|---|
| 1, Ditchling Rise133 m away | 54 m² | 104 m² | +50 m² +93% | 2015 |
|---|
| 17, Stafford Road637 m away | 116 m² | 165 m² | +49 m² +42% | 2025 |
|---|
| 59, Upper Lewes Road991 m away | 43 m² | 92 m² | +49 m² +114% | 2020 |
|---|
| 31, Caledonian Road929 m away | 81 m² | 130 m² | +49 m² +60% | 2019 |
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| 111, Preston Road468 m away | 102 m² | 151 m² | +49 m² +48% | 2018 |
|---|
| 28, Havelock Road693 m away | 100 m² | 148 m² | +48 m² +48% | 2025 |
|---|
| 35, Baker Street484 m away | 93 m² | 141 m² | +48 m² +52% | 2024 |
|---|
| 172, Springfield Road517 m away | 254 m² | 302 m² | +48 m² +19% | 2023 |
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| 5, Powis Road923 m away | 34 m² | 82 m² | +48 m² +141% | 2020 |
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| 27, Colbourne Road943 m away | 122 m² | 169 m² | +47 m² +39% | 2025 |
|---|
| 31, Waldegrave Road728 m away | 96 m² | 143 m² | +47 m² +49% | 2021 |
|---|
| 34, Edburton Avenue778 m away | 81 m² | 128 m² | +47 m² +58% | 2021 |
|---|
| 183, Lewes Road953 m away | 52 m² | 99 m² | +47 m² +90% | 2017 |
|---|
| 76, Rose Hill Terrace329 m away | 43 m² | 90 m² | +47 m² +109% | 2009 |
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| 105, Waldegrave Road982 m away | 99 m² | 145 m² | +46 m² +46% | 2023 |
|---|
| 25b, Buckingham Place431 m away | 63 m² | 109 m² | +46 m² +73% | 2022 |
|---|
| 4, Highdown Road700 m away | 79 m² | 125 m² | +46 m² +58% | 2022 |
|---|
| 39, Osmond Road873 m away | 176 m² | 222 m² | +46 m² +26% | 2021 |
|---|
| 10, Wolstonbury Road786 m away | 126 m² | 172 m² | +46 m² +37% | 2013 |
|---|
| 10, Upper Hollingdean Road920 m away | 69 m² | 115 m² | +46 m² +67% | 2012 |
|---|
| 21, Stafford Road637 m away | 118 m² | 163 m² | +45 m² +38% | 2024 |
|---|
| 20, Guildford Road614 m away | 42 m² | 87 m² | +45 m² +107% | 2023 |
|---|
| 130, Springfield Road416 m away | 151 m² | 196 m² | +45 m² +30% | 2019 |
|---|
| 26, Beaconsfield Villas655 m away | 196 m² | 241 m² | +45 m² +23% | 2015 |
|---|
| 4, Davigdor Road813 m away | 112 m² | 156 m² | +44 m² +39% | 2024 |
|---|
| 115, Addison Road899 m away | 118 m² | 162 m² | +44 m² +37% | 2022 |
|---|
| 50, Belgrave Street967 m away | 70 m² | 114 m² | +44 m² +63% | 2022 |
|---|
| 99, Hanover Terrace900 m away | 105 m² | 149 m² | +44 m² +42% | 2018 |
|---|
| 22b, Dyke Road930 m away | 42 m² | 86 m² | +44 m² +105% | 2018 |
|---|
| 177, Ditchling Rise524 m away | 45 m² | 89 m² | +44 m² +98% | 2017 |
|---|
| Flat 96, Embankment House, 7, Fleet Street394 m away | 78 m² | 122 m² | +44 m² +56% | 2015 |
|---|
| 62, Roundhill Crescent914 m away | 43 m² | 87 m² | +44 m² +102% | 2013 |
|---|
| Flat 9, South Court, 196, Dyke Road926 m away | 124 m² | 167 m² | +43 m² +35% | 2024 |
|---|
| Flat 30, Old College House, 8 - 10, Richmond Terrace770 m away | 142 m² | 185 m² | +43 m² +30% | 2020 |
|---|
| 20, Beaconsfield Road112 m away | 51 m² | 94 m² | +43 m² +84% | 2016 |
|---|
| 100, Shaftesbury Road325 m away | 44 m² | 87 m² | +43 m² +98% | 2014 |
|---|
| 108, Waldegrave Road977 m away | 106 m² | 149 m² | +43 m² +41% | 2014 |
|---|
| 16, St Andrews Road854 m away | 140 m² | 182 m² | +42 m² +30% | 2023 |
|---|
| 1, Upper Hollingdean Road920 m away | 116 m² | 158 m² | +42 m² +36% | 2022 |
|---|
| 21, Viaduct Road307 m away | 91 m² | 133 m² | +42 m² +46% | 2021 |
|---|
| 31, Chester Terrace789 m away | 94 m² | 136 m² | +42 m² +45% | 2021 |
|---|
| 7a, St Georges Place865 m away | 57 m² | 99 m² | +42 m² +74% | 2021 |
|---|
| 16, Kew Street939 m away | 71 m² | 113 m² | +42 m² +59% | 2018 |
|---|
| 41, Osmond Road873 m away | 165 m² | 207 m² | +42 m² +25% | 2010 |
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| 35a, Colbourne Road943 m away | 59 m² | 100 m² | +41 m² +69% | 2026 |
|---|
| 12a, Granville Road754 m away | 74 m² | 115 m² | +41 m² +55% | 2022 |
|---|
| 16, Ditchling Rise133 m away | 94 m² | 135 m² | +41 m² +44% | 2021 |
|---|
| 30, Clifton Street530 m away | 100 m² | 141 m² | +41 m² +41% | 2021 |
|---|
| 30, Caledonian Road929 m away | 85 m² | 126 m² | +41 m² +48% | 2020 |
|---|
| 29, Hollingbury Road996 m away | 86 m² | 127 m² | +41 m² +48% | 2020 |
|---|
| 12, Gerard Street252 m away | 89 m² | 130 m² | +41 m² +46% | 2019 |
|---|
| 52, Viaduct Road318 m away | 100 m² | 141 m² | +41 m² +41% | 2019 |
|---|
| 23, St Nicholas Road888 m away | 35 m² | 76 m² | +41 m² +117% | 2018 |
|---|
| 1, Powis Road923 m away | 92 m² | 133 m² | +41 m² +45% | 2017 |
|---|
| Flat 3, 22, Denmark Terrace953 m away | 28 m² | 68 m² | +40 m² +143% | 2024 |
|---|
| 9, Park Crescent Road756 m away | 89 m² | 129 m² | +40 m² +45% | 2019 |
|---|
| 2, Caburn Road728 m away | 133 m² | 173 m² | +40 m² +30% | 2018 |
|---|
| 107, Addison Road899 m away | 45 m² | 85 m² | +40 m² +89% | 2018 |
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| 57, Waldegrave Road728 m away | 109 m² | 149 m² | +40 m² +37% | 2017 |
|---|
| 63, Coventry Street595 m away | 91 m² | 131 m² | +40 m² +44% | 2015 |
|---|
| 34, Lancaster Road510 m away | 117 m² | 156 m² | +39 m² +33% | 2024 |
|---|
| 75a, Hanover Street857 m away | 83 m² | 122 m² | +39 m² +47% | 2023 |
|---|
| Flat 1, 48, Buckingham Place458 m away | 29 m² | 68 m² | +39 m² +134% | 2019 |
|---|
| 16, Edinburgh Road973 m away | 81 m² | 120 m² | +39 m² +48% | 2019 |
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| 149, Ditchling Rise438 m away | 34 m² | 73 m² | +39 m² +115% | 2016 |
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| 3, York Grove339 m away | 37 m² | 76 m² | +39 m² +105% | 2013 |
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| 77, Roundhill Crescent996 m away | 90 m² | 129 m² | +39 m² +43% | 2011 |
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| 49, Surrey Street707 m away | 105 m² | 144 m² | +39 m² +37% | 2010 |
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| 86, Washington Street992 m away | 81 m² | 119 m² | +38 m² +47% | 2026 |
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| 9, Howard Place407 m away | 45 m² | 83 m² | +38 m² +84% | 2025 |
|---|
| 2, Trinity Street799 m away | 71 m² | 109 m² | +38 m² +54% | 2021 |
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| 102, Richmond Road857 m away | 93 m² | 131 m² | +38 m² +41% | 2021 |
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| 39, Port Hall Street758 m away | 119 m² | 157 m² | +38 m² +32% | 2020 |
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| 38, Park Crescent Terrace649 m away | 74 m² | 112 m² | +38 m² +51% | 2018 |
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| 50, Beaconsfield Road201 m away | 87 m² | 125 m² | +38 m² +44% | 2014 |
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| 9, Old Shoreham Road349 m away | 91 m² | 129 m² | +38 m² +42% | 2014 |
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| 28, Buckingham Street695 m away | 43 m² | 81 m² | +38 m² +88% | 2012 |
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| 70, Warleigh Road421 m away | 36 m² | 74 m² | +38 m² +106% | 2010 |
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| 1, Hanover Crescent818 m away | 227 m² | 265 m² | +38 m² +17% | 2010 |
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| 27, Queens Road955 m away | 56 m² | 94 m² | +38 m² +68% | 2010 |
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| 35, Crescent Road687 m away | 73 m² | 110 m² | +37 m² +51% | 2024 |
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| 18, Trinity Street799 m away | 101 m² | 138 m² | +37 m² +37% | 2021 |
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| Basement, 45c, Dyke Road Drive343 m away | 45 m² | 82 m² | +37 m² +82% | 2016 |
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| 57, Viaduct Road318 m away | 36 m² | 73 m² | +37 m² +103% | 2014 |
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| Ground And First Floor Maisonette, 6, Aberdeen Road998 m away | 33 m² | 70 m² | +37 m² +112% | 2014 |
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| 1, Argyle Road86 m away | 66 m² | 103 m² | +37 m² +56% | 2011 |
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| 36, Vernon Terrace697 m away | 51 m² | 88 m² | +37 m² +73% | 2011 |
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| 91, Southover Street995 m away | 89 m² | 125 m² | +36 m² +40% | 2026 |
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| 9, Dyke Road Drive343 m away | 98 m² | 134 m² | +36 m² +37% | 2022 |
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| 15, Wolstonbury Road786 m away | 122 m² | 158 m² | +36 m² +30% | 2020 |
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| 1, Hollingdean Lane780 m away | 74 m² | 110 m² | +36 m² +49% | 2017 |
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| Flat 88, Embankment House, 7, Fleet Street394 m away | 70 m² | 106 m² | +36 m² +51% | 2015 |
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| 35, Beaconsfield Road112 m away | 91 m² | 127 m² | +36 m² +40% | 2013 |
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| 6, St Georges Place865 m away | 46 m² | 82 m² | +36 m² +78% | 2010 |
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| 15, Buckingham Street695 m away | 127 m² | 162 m² | +35 m² +28% | 2024 |
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| 21, Tidy Street756 m away | 38 m² | 73 m² | +35 m² +92% | 2023 |
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| 14, Edburton Avenue778 m away | 106 m² | 141 m² | +35 m² +33% | 2023 |
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| 74, Florence Road471 m away | 120 m² | 155 m² | +35 m² +29% | 2020 |
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| 17, Coventry Street595 m away | 83 m² | 118 m² | +35 m² +42% | 2020 |
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| 85, Havelock Road689 m away | 92 m² | 127 m² | +35 m² +38% | 2020 |
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| 180, Havelock Road971 m away | 101 m² | 136 m² | +35 m² +35% | 2020 |
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| 19, Ditchling Rise133 m away | 163 m² | 198 m² | +35 m² +21% | 2019 |
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| 1, Edinburgh Road973 m away | 107 m² | 142 m² | +35 m² +33% | 2019 |
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| 32, Cissbury Road905 m away | 180 m² | 215 m² | +35 m² +19% | 2017 |
|---|
| 1, Southdown Place940 m away | 98 m² | 133 m² | +35 m² +36% | 2015 |
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| 7, Melville Road666 m away | 48 m² | 83 m² | +35 m² +73% | 2011 |
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| 3, St Michaels Place945 m away | 41 m² | 76 m² | +35 m² +85% | 2009 |
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| 41, Richmond Road820 m away | 82 m² | 116 m² | +34 m² +41% | 2026 |
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| 66, Waldegrave Road758 m away | 108 m² | 142 m² | +34 m² +31% | 2024 |
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| 102, Addison Road925 m away | 111 m² | 145 m² | +34 m² +31% | 2024 |
|---|
| 1, Hamilton Road335 m away | 121 m² | 155 m² | +34 m² +28% | 2023 |
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| 61, Exeter Street621 m away | 82 m² | 116 m² | +34 m² +41% | 2023 |
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| 1, Mayo Road864 m away | 48 m² | 82 m² | +34 m² +71% | 2023 |
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| 14, Kew Street939 m away | 98 m² | 132 m² | +34 m² +35% | 2023 |
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| 13, Wakefield Road697 m away | 126 m² | 160 m² | +34 m² +27% | 2018 |
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| 67b, Buckingham Road530 m away | 33 m² | 67 m² | +34 m² +103% | 2016 |
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| 119, Waldegrave Road982 m away | 108 m² | 142 m² | +34 m² +31% | 2013 |
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| 60, Old Shoreham Road385 m away | 41 m² | 75 m² | +34 m² +83% | 2012 |
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| 18, New England Road308 m away | 46 m² | 80 m² | +34 m² +74% | 2009 |
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| 1a, Roundhill Road588 m away | 43 m² | 77 m² | +34 m² +79% | 2009 |
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| 10, Mayo Road864 m away | 86 m² | 119 m² | +33 m² +38% | 2026 |
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| 3, Old Shoreham Road349 m away | 60 m² | 93 m² | +33 m² +55% | 2024 |
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| 1, Stanford Road453 m away | 45 m² | 78 m² | +33 m² +73% | 2024 |
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| 5, Guildford Road642 m away | 68 m² | 101 m² | +33 m² +49% | 2024 |
|---|
| 14, Wolstonbury Road786 m away | 146 m² | 179 m² | +33 m² +23% | 2024 |
|---|
| Flat 4, The Old Church Hall, 15, Ditchling Rise133 m away | 87 m² | 120 m² | +33 m² +38% | 2021 |
|---|
| 67, Florence Road551 m away | 128 m² | 161 m² | +33 m² +26% | 2021 |
|---|
| 14, London Road547 m away | 31 m² | 64 m² | +33 m² +106% | 2020 |
|---|
| 79, Addison Road899 m away | 141 m² | 174 m² | +33 m² +23% | 2018 |
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| 3a, Beaconsfield Parade298 m away | 71 m² | 104 m² | +33 m² +46% | 2017 |
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| 38, Clifton Street530 m away | 84 m² | 117 m² | +33 m² +39% | 2017 |
|---|
| 106, Stanford Avenue946 m away | 179 m² | 212 m² | +33 m² +18% | 2014 |
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| 9, Grand Parade990 m away | 50 m² | 83 m² | +33 m² +66% | 2014 |
|---|
| 47, Rugby Road544 m away | 146 m² | 179 m² | +33 m² +23% | 2013 |
|---|
| 27, Hollingbury Road996 m away | 96 m² | 129 m² | +33 m² +34% | 2012 |
|---|
| 17, Edinburgh Road973 m away | 82 m² | 114 m² | +32 m² +39% | 2025 |
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| 84, Addison Road925 m away | 116 m² | 148 m² | +32 m² +28% | 2024 |
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| 49, Park Crescent Terrace754 m away | 115 m² | 147 m² | +32 m² +28% | 2020 |
|---|
| 45, Argyle Road53 m away | 100 m² | 132 m² | +32 m² +32% | 2019 |
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| 33, Trafalgar Lane716 m away | 75 m² | 107 m² | +32 m² +43% | 2019 |
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| 15, Upper Hollingdean Road920 m away | 135 m² | 167 m² | +32 m² +24% | 2018 |
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| 64, Clyde Road266 m away | 129 m² | 160 m² | +31 m² +24% | 2026 |
|---|
| 50, Waldegrave Road758 m away | 106 m² | 137 m² | +31 m² +29% | 2026 |
|---|
| 10, Winchester Street204 m away | 78 m² | 109 m² | +31 m² +40% | 2025 |
|---|
| 13, Dyke Road Drive343 m away | 105 m² | 136 m² | +31 m² +30% | 2024 |
|---|
| 5, Southdown Place940 m away | 100 m² | 131 m² | +31 m² +31% | 2024 |
|---|
| 20, Ditchling Rise133 m away | 97 m² | 128 m² | +31 m² +32% | 2023 |
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