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 4SB
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 Way266 m away | 137 m² | 336 m² | +199 m² +145% | 2025 |
| 24, West Drive786 m away | 86 m² | 201 m² | +115 m² +134% | 2022 |
| 9, Clifton Hill992 m away | 96 m² | 209 m² | +113 m² +118% | 2016 |
| 29, Albion Hill525 m away | 78 m² | 176 m² | +98 m² +126% | 2025 |
| 22, West Drive786 m away | 115 m² | 212 m² | +97 m² +84% | 2016 |
| 22, Buckingham Place629 m away | 94 m² | 188 m² | +94 m² +100% | 2015 |
| Flat 3, 6, Stanford Road951 m away | 60 m² | 146 m² | +86 m² +143% | 2018 |
| 99a, North Road572 m away | 95 m² | 179 m² | +84 m² +88% | 2020 |
| 12, Stanley Road426 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.
| 95 m² |
| 178 m² |
| +83 m² +87% |
| 2009 |
| 18, Stanford Road951 m away | 191 m² | 270 m² | +79 m² +41% | 2024 |
|---|
| 40, Stanford Road951 m away | 189 m² | 263 m² | +74 m² +39% | 2023 |
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| 58, Compton Avenue731 m away | 113 m² | 185 m² | +72 m² +64% | 2023 |
|---|
| 45, Springfield Road812 m away | 206 m² | 278 m² | +72 m² +35% | 2022 |
|---|
| 116, Bonchurch Road925 m away | 135 m² | 205 m² | +70 m² +52% | 2025 |
|---|
| Flat 5, 12 - 14, Wellington Road609 m away | 66 m² | 135 m² | +69 m² +105% | 2019 |
|---|
| 124, Springfield Road769 m away | 122 m² | 190 m² | +68 m² +56% | 2025 |
|---|
| 11, Rugby Road963 m away | 80 m² | 148 m² | +68 m² +85% | 2024 |
|---|
| 12, Park Crescent Terrace376 m away | 57 m² | 125 m² | +68 m² +119% | 2015 |
|---|
| 11, Holland Street472 m away | 59 m² | 126 m² | +67 m² +114% | 2023 |
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| 47a, Lewes Road690 m away | 82 m² | 147 m² | +65 m² +79% | 2020 |
|---|
| 1, Coleman Street408 m away | 57 m² | 122 m² | +65 m² +114% | 2019 |
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| 82, Queens Park Road776 m away | 89 m² | 152 m² | +63 m² +71% | 2021 |
|---|
| 54, George Street955 m away | 105 m² | 167 m² | +62 m² +59% | 2019 |
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| 171, Queens Park Road700 m away | 103 m² | 164 m² | +61 m² +59% | 2019 |
|---|
| 36, Stroudley Road510 m away | 74 m² | 135 m² | +61 m² +82% | 2011 |
|---|
| 34, Islingword Place770 m away | 64 m² | 124 m² | +60 m² +94% | 2024 |
|---|
| 129, Ditchling Road506 m away | 134 m² | 193 m² | +59 m² +44% | 2023 |
|---|
| 56, Rugby Road963 m away | 171 m² | 229 m² | +58 m² +34% | 2018 |
|---|
| 148, Queens Park Road729 m away | 49 m² | 107 m² | +58 m² +118% | 2014 |
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| 2, Crown Gardens794 m away | 52 m² | 109 m² | +57 m² +110% | 2023 |
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| 21, Hanover Crescent299 m away | 167 m² | 224 m² | +57 m² +34% | 2020 |
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| 50, Viaduct Road354 m away | 60 m² | 117 m² | +57 m² +95% | 2020 |
|---|
| 78, Richmond Road798 m away | 93 m² | 150 m² | +57 m² +61% | 2018 |
|---|
| 17, Rugby Road963 m away | 61 m² | 117 m² | +56 m² +92% | 2015 |
|---|
| 9, Princes Crescent565 m away | 39 m² | 95 m² | +56 m² +144% | 2010 |
|---|
| 7, Howard Place725 m away | 51 m² | 107 m² | +56 m² +110% | 2008 |
|---|
| 20, Florence Road863 m away | 259 m² | 314 m² | +55 m² +21% | 2026 |
|---|
| 60, Richmond Road798 m away | 171 m² | 224 m² | +53 m² +31% | 2026 |
|---|
| 1, Hartington Road958 m away | 41 m² | 94 m² | +53 m² +129% | 2021 |
|---|
| 66, Beaconsfield Road727 m away | 95 m² | 148 m² | +53 m² +56% | 2019 |
|---|
| 5, Howard Place725 m away | 41 m² | 94 m² | +53 m² +129% | 2018 |
|---|
| 55, Hartington Road958 m away | 105 m² | 158 m² | +53 m² +50% | 2016 |
|---|
| 13, Clifton Terrace971 m away | 64 m² | 116 m² | +52 m² +81% | 2020 |
|---|
| Book House, 25, Marlborough Place657 m away | 45 m² | 96 m² | +51 m² +113% | 2023 |
|---|
| First Floor Flat, 21, Alexandra Villas775 m away | 77 m² | 128 m² | +51 m² +66% | 2019 |
|---|
| 29, Queens Park Road751 m away | 55 m² | 106 m² | +51 m² +93% | 2014 |
|---|
| 2, Guildford Street626 m away | 58 m² | 109 m² | +51 m² +88% | 2010 |
|---|
| 11, Dyke Road Drive951 m away | 106 m² | 156 m² | +50 m² +47% | 2026 |
|---|
| 22a, Campbell Road611 m away | 65 m² | 115 m² | +50 m² +77% | 2020 |
|---|
| 1, Ditchling Rise694 m away | 54 m² | 104 m² | +50 m² +93% | 2015 |
|---|
| 59, Upper Lewes Road838 m away | 43 m² | 92 m² | +49 m² +114% | 2020 |
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| 31, Caledonian Road703 m away | 81 m² | 130 m² | +49 m² +60% | 2019 |
|---|
| 138, Edward Street989 m away | 49 m² | 98 m² | +49 m² +100% | 2019 |
|---|
| 9, Coronation Street801 m away | 84 m² | 133 m² | +49 m² +58% | 2012 |
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| 35, Baker Street159 m away | 93 m² | 141 m² | +48 m² +52% | 2024 |
|---|
| 172, Springfield Road774 m away | 254 m² | 302 m² | +48 m² +19% | 2023 |
|---|
| 41, Carlyle Street861 m away | 71 m² | 118 m² | +47 m² +66% | 2020 |
|---|
| 183, Lewes Road648 m away | 52 m² | 99 m² | +47 m² +90% | 2017 |
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| 76, Rose Hill Terrace305 m away | 43 m² | 90 m² | +47 m² +109% | 2009 |
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| 25b, Buckingham Place665 m away | 63 m² | 109 m² | +46 m² +73% | 2022 |
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| 20, Wellington Road609 m away | 54 m² | 99 m² | +45 m² +83% | 2024 |
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| 6, Upper Wellington Road820 m away | 89 m² | 134 m² | +45 m² +51% | 2024 |
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| 20, Guildford Road598 m away | 42 m² | 87 m² | +45 m² +107% | 2023 |
|---|
| 130, Springfield Road769 m away | 151 m² | 196 m² | +45 m² +30% | 2019 |
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| 5, Fairlight Place817 m away | 40 m² | 85 m² | +45 m² +113% | 2018 |
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| 65, Bonchurch Road893 m away | 103 m² | 147 m² | +44 m² +43% | 2025 |
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| 50, Belgrave Street357 m away | 70 m² | 114 m² | +44 m² +63% | 2022 |
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| 99, Hanover Terrace363 m away | 105 m² | 149 m² | +44 m² +42% | 2018 |
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| 22b, Dyke Road887 m away | 42 m² | 86 m² | +44 m² +105% | 2018 |
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| 177, Ditchling Rise700 m away | 45 m² | 89 m² | +44 m² +98% | 2017 |
|---|
| Flat 96, Embankment House, 7, Fleet Street348 m away | 78 m² | 122 m² | +44 m² +56% | 2015 |
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| 62, Roundhill Crescent781 m away | 43 m² | 87 m² | +44 m² +102% | 2013 |
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| 15, Freshfield Street989 m away | 72 m² | 115 m² | +43 m² +60% | 2024 |
|---|
| Flat 30, Old College House, 8 - 10, Richmond Terrace170 m away | 142 m² | 185 m² | +43 m² +30% | 2020 |
|---|
| 20, Beaconsfield Road594 m away | 51 m² | 94 m² | +43 m² +84% | 2016 |
|---|
| 100, Shaftesbury Road579 m away | 44 m² | 87 m² | +43 m² +98% | 2014 |
|---|
| 2, West Drive803 m away | 226 m² | 268 m² | +42 m² +19% | 2025 |
|---|
| 21, Viaduct Road345 m away | 91 m² | 133 m² | +42 m² +46% | 2021 |
|---|
| 7a, St Georges Place356 m away | 57 m² | 99 m² | +42 m² +74% | 2021 |
|---|
| 16, Kew Street788 m away | 71 m² | 113 m² | +42 m² +59% | 2018 |
|---|
| Flat 2, Kemptown House, 72, Carlton Hill792 m away | 64 m² | 106 m² | +42 m² +66% | 2018 |
|---|
| 38, Egremont Place953 m away | 39 m² | 81 m² | +42 m² +108% | 2009 |
|---|
| 30, Clifton Street566 m away | 100 m² | 141 m² | +41 m² +41% | 2021 |
|---|
| 16, Ditchling Rise694 m away | 94 m² | 135 m² | +41 m² +44% | 2021 |
|---|
| 30, Caledonian Road703 m away | 85 m² | 126 m² | +41 m² +48% | 2020 |
|---|
| 52, Viaduct Road354 m away | 100 m² | 141 m² | +41 m² +41% | 2019 |
|---|
| 12, Gerard Street579 m away | 89 m² | 130 m² | +41 m² +46% | 2019 |
|---|
| 23, St Nicholas Road793 m away | 35 m² | 76 m² | +41 m² +117% | 2018 |
|---|
| 26, Bentham Road794 m away | 41 m² | 82 m² | +41 m² +100% | 2018 |
|---|
| 3, Elm Grove627 m away | 92 m² | 133 m² | +41 m² +45% | 2011 |
|---|
| 21, Islingword Street538 m away | 112 m² | 152 m² | +40 m² +36% | 2023 |
|---|
| 71, Cobden Road677 m away | 93 m² | 133 m² | +40 m² +43% | 2023 |
|---|
| 64, Southampton Street564 m away | 91 m² | 131 m² | +40 m² +44% | 2022 |
|---|
| 38, De Montfort Road722 m away | 102 m² | 142 m² | +40 m² +39% | 2021 |
|---|
| 9, Park Crescent Road528 m away | 89 m² | 129 m² | +40 m² +45% | 2019 |
|---|
| 51, Islingword Road598 m away | 87 m² | 126 m² | +39 m² +45% | 2026 |
|---|
| 113, Queens Park Road700 m away | 134 m² | 173 m² | +39 m² +29% | 2024 |
|---|
| 75a, Hanover Street325 m away | 83 m² | 122 m² | +39 m² +47% | 2023 |
|---|
| 40, Islingword Road598 m away | 72 m² | 111 m² | +39 m² +54% | 2021 |
|---|
| Flat 2, 6, Franklin Road736 m away | 37 m² | 76 m² | +39 m² +105% | 2021 |
|---|
| 83, Elm Grove627 m away | 98 m² | 137 m² | +39 m² +40% | 2020 |
|---|
| 27, Tillstone Street993 m away | 69 m² | 108 m² | +39 m² +57% | 2020 |
|---|
| Flat 1, 48, Buckingham Place629 m away | 29 m² | 68 m² | +39 m² +134% | 2019 |
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| 16, Edinburgh Road763 m away | 81 m² | 120 m² | +39 m² +48% | 2019 |
|---|
| 149, Ditchling Rise675 m away | 34 m² | 73 m² | +39 m² +115% | 2016 |
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| 14, Inverness Road844 m away | 85 m² | 124 m² | +39 m² +46% | 2014 |
|---|
| 3, York Grove763 m away | 37 m² | 76 m² | +39 m² +105% | 2013 |
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| 77, Roundhill Crescent878 m away | 90 m² | 129 m² | +39 m² +43% | 2011 |
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| 49, Surrey Street569 m away | 105 m² | 144 m² | +39 m² +37% | 2010 |
|---|
| 86, Washington Street438 m away | 81 m² | 119 m² | +38 m² +47% | 2026 |
|---|
| 9, Howard Place725 m away | 45 m² | 83 m² | +38 m² +84% | 2025 |
|---|
| 13, Inverness Road844 m away | 86 m² | 124 m² | +38 m² +44% | 2025 |
|---|
| 6, Egremont Place934 m away | 40 m² | 78 m² | +38 m² +95% | 2025 |
|---|
| 1, Freshfield Street989 m away | 83 m² | 121 m² | +38 m² +46% | 2023 |
|---|
| 141, Elm Grove945 m away | 105 m² | 143 m² | +38 m² +36% | 2022 |
|---|
| 2, Trinity Street490 m away | 71 m² | 109 m² | +38 m² +54% | 2021 |
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| 102, Richmond Road798 m away | 93 m² | 131 m² | +38 m² +41% | 2021 |
|---|
| 4, Coronation Street801 m away | 106 m² | 144 m² | +38 m² +36% | 2020 |
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| 38, Park Crescent Terrace376 m away | 74 m² | 112 m² | +38 m² +51% | 2018 |
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| 50, Beaconsfield Road727 m away | 87 m² | 125 m² | +38 m² +44% | 2014 |
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| 9, Old Shoreham Road805 m away | 91 m² | 129 m² | +38 m² +42% | 2014 |
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| 28, Buckingham Street642 m away | 43 m² | 81 m² | +38 m² +88% | 2012 |
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| 1, Hanover Crescent299 m away | 227 m² | 265 m² | +38 m² +17% | 2010 |
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| 70, Warleigh Road593 m away | 36 m² | 74 m² | +38 m² +106% | 2010 |
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| 27, Queens Road757 m away | 56 m² | 94 m² | +38 m² +68% | 2010 |
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| 28, Jersey Street416 m away | 108 m² | 145 m² | +37 m² +34% | 2026 |
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| 35, Crescent Road688 m away | 73 m² | 110 m² | +37 m² +51% | 2024 |
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| 18, Trinity Street490 m away | 101 m² | 138 m² | +37 m² +37% | 2021 |
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| 61, Ewart Street505 m away | 101 m² | 138 m² | +37 m² +37% | 2021 |
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| 19, George Street956 m away | 70 m² | 107 m² | +37 m² +53% | 2020 |
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| Basement, 45c, Dyke Road Drive951 m away | 45 m² | 82 m² | +37 m² +82% | 2016 |
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| 57, Viaduct Road354 m away | 36 m² | 73 m² | +37 m² +103% | 2014 |
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| Ground And First Floor Maisonette, 6, Aberdeen Road802 m away | 33 m² | 70 m² | +37 m² +112% | 2014 |
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| 1, Argyle Road664 m away | 66 m² | 103 m² | +37 m² +56% | 2011 |
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| 36, Vernon Terrace972 m away | 51 m² | 88 m² | +37 m² +73% | 2011 |
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| 91, Southover Street399 m away | 89 m² | 125 m² | +36 m² +40% | 2026 |
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| 93, Bonchurch Road893 m away | 92 m² | 128 m² | +36 m² +39% | 2024 |
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| 32, Bonchurch Road925 m away | 108 m² | 144 m² | +36 m² +33% | 2023 |
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| 9, Dyke Road Drive951 m away | 98 m² | 134 m² | +36 m² +37% | 2022 |
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| 1, Hollingdean Lane943 m away | 74 m² | 110 m² | +36 m² +49% | 2017 |
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| Flat 88, Embankment House, 7, Fleet Street348 m away | 70 m² | 106 m² | +36 m² +51% | 2015 |
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| 35, Beaconsfield Road594 m away | 91 m² | 127 m² | +36 m² +40% | 2013 |
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| 6, St Georges Place356 m away | 46 m² | 82 m² | +36 m² +78% | 2010 |
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| 49, Richmond Street573 m away | 102 m² | 137 m² | +35 m² +34% | 2024 |
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| 15, Buckingham Street642 m away | 127 m² | 162 m² | +35 m² +28% | 2024 |
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| 21, Tidy Street399 m away | 38 m² | 73 m² | +35 m² +92% | 2023 |
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| 3a, Bond Street833 m away | 138 m² | 173 m² | +35 m² +25% | 2022 |
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| 74, Florence Road863 m away | 120 m² | 155 m² | +35 m² +29% | 2020 |
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| 19, Ditchling Rise694 m away | 163 m² | 198 m² | +35 m² +21% | 2019 |
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| 1, Edinburgh Road763 m away | 107 m² | 142 m² | +35 m² +33% | 2019 |
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| 10, Inverness Road844 m away | 96 m² | 131 m² | +35 m² +36% | 2019 |
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| 14, D'Aubigny Road931 m away | 109 m² | 144 m² | +35 m² +32% | 2017 |
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| 41, Richmond Road782 m away | 82 m² | 116 m² | +34 m² +41% | 2026 |
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| 11, Lincoln Cottages465 m away | 80 m² | 114 m² | +34 m² +43% | 2023 |
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| 14, Kew Street788 m away | 98 m² | 132 m² | +34 m² +35% | 2023 |
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| 1, Mayo Road842 m away | 48 m² | 82 m² | +34 m² +71% | 2023 |
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| 1, Hamilton Road876 m away | 121 m² | 155 m² | +34 m² +28% | 2023 |
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| 63, Bentham Road819 m away | 78 m² | 112 m² | +34 m² +44% | 2022 |
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| 18, Inverness Road844 m away | 83 m² | 117 m² | +34 m² +41% | 2019 |
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| 13, Wakefield Road553 m away | 126 m² | 160 m² | +34 m² +27% | 2018 |
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| 67b, Buckingham Road617 m away | 33 m² | 67 m² | +34 m² +103% | 2016 |
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| 60, Old Shoreham Road868 m away | 41 m² | 75 m² | +34 m² +83% | 2012 |
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| 1a, Roundhill Road630 m away | 43 m² | 77 m² | +34 m² +79% | 2009 |
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| 18, New England Road728 m away | 46 m² | 80 m² | +34 m² +74% | 2009 |
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| 10, Mayo Road842 m away | 86 m² | 119 m² | +33 m² +38% | 2026 |
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| 39, Holland Street472 m away | 87 m² | 120 m² | +33 m² +38% | 2024 |
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| 52, Southampton Street564 m away | 93 m² | 126 m² | +33 m² +35% | 2024 |
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| 5, Guildford Road630 m away | 68 m² | 101 m² | +33 m² +49% | 2024 |
|---|
| 3, Old Shoreham Road805 m away | 60 m² | 93 m² | +33 m² +55% | 2024 |
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| 1, Stanford Road987 m away | 45 m² | 78 m² | +33 m² +73% | 2024 |
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| 30, Quebec Street572 m away | 43 m² | 76 m² | +33 m² +77% | 2023 |
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| 51, Bentham Road819 m away | 79 m² | 112 m² | +33 m² +42% | 2022 |
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| 25, Islingword Street538 m away | 94 m² | 127 m² | +33 m² +35% | 2021 |
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| Flat 4, The Old Church Hall, 15, Ditchling Rise694 m away | 87 m² | 120 m² | +33 m² +38% | 2021 |
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| 67, Florence Road901 m away | 128 m² | 161 m² | +33 m² +26% | 2021 |
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| 14, London Road110 m away | 31 m² | 64 m² | +33 m² +106% | 2020 |
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| 39, Bonchurch Road893 m away | 117 m² | 150 m² | +33 m² +28% | 2020 |
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| 97, Whippingham Road952 m away | 95 m² | 128 m² | +33 m² +35% | 2019 |
|---|
| 38, Clifton Street566 m away | 84 m² | 117 m² | +33 m² +39% | 2017 |
|---|
| 3a, Beaconsfield Parade839 m away | 71 m² | 104 m² | +33 m² +46% | 2017 |
|---|
| 86, Whippingham Road977 m away | 95 m² | 128 m² | +33 m² +35% | 2016 |
|---|
| 9, Grand Parade454 m away | 50 m² | 83 m² | +33 m² +66% | 2014 |
|---|
| 47, Rugby Road963 m away | 146 m² | 179 m² | +33 m² +23% | 2013 |
|---|
| 17, Edinburgh Road763 m away | 82 m² | 114 m² | +32 m² +39% | 2025 |
|---|
| 53, De Montfort Road695 m away | 136 m² | 168 m² | +32 m² +24% | 2021 |
|---|
| 49, Park Crescent Terrace439 m away | 115 m² | 147 m² | +32 m² +28% | 2020 |
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| 179, Queens Park Road789 m away | 90 m² | 122 m² | +32 m² +36% | 2020 |
|---|
| 218, Queens Park Road827 m away | 98 m² | 130 m² | +32 m² +33% | 2020 |
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| 96, Bonchurch Road925 m away | 94 m² | 126 m² | +32 m² +34% | 2020 |
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| 33, Trafalgar Lane408 m away | 75 m² | 107 m² | +32 m² +43% | 2019 |
|---|
| 45, Argyle Road628 m away | 100 m² | 132 m² | +32 m² +32% | 2019 |
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| 64, Clyde Road497 m away | 129 m² | 160 m² | +31 m² +24% | 2026 |
|---|
| 60, Southampton Street564 m away | 93 m² | 124 m² | +31 m² +33% | 2026 |
|---|
| 36, Queens Park Terrace933 m away | 109 m² | 140 m² | +31 m² +28% | 2026 |
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| 10, Winchester Street581 m away | 78 m² | 109 m² | +31 m² +40% | 2025 |
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| 71, Islingword Place760 m away | 69 m² | 100 m² | +31 m² +45% | 2025 |
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| 228, Queens Park Road827 m away | 94 m² | 125 m² | +31 m² +33% | 2025 |
|---|
| 50, Whippingham Road977 m away | 92 m² | 123 m² | +31 m² +34% | 2025 |
|---|
| 37, Lincoln Street467 m away | 82 m² | 113 m² | +31 m² +38% | 2024 |
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| 13, Dyke Road Drive951 m away | 105 m² | 136 m² | +31 m² +30% | 2024 |
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