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 BN21 2BY
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 |
|---|---|---|---|---|
| Flat 1, 13, Arlington Road912 m away | 152 m² | 305 m² | +153 m² +101% | 2022 |
| 12b, Prideaux Road797 m away | 133 m² | 273 m² | +140 m² +105% | 2026 |
| 12a, Grove Road809 m away | 130 m² | 230 m² | +100 m² +77% | 2025 |
| 95, Pevensey Road951 m away | 152 m² | 242 m² | +90 m² +59% | 2020 |
| 58, Kings Drive824 m away | 138 m² | 223 m² | +85 m² +62% | 2018 |
| 118, Whitley Road521 m away | 112 m² | 189 m² | +77 m² +69% | 2026 |
| 3, Le Brun Road564 m away | 106 m² | 182 m² | +76 m² +72% | 2022 |
| 44, Kings Drive824 m away | 134 m² | 209 m² | +75 m² +56% | 2024 |
| 97, Ashford Road588 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.
| 66 m² |
| 141 m² |
| +75 m² +114% |
| 2023 |
| Fortuna House, 47a, Prideaux Road797 m away | 207 m² | 280 m² | +73 m² +35% | 2020 |
|---|
| 8, Annington Road817 m away | 96 m² | 169 m² | +73 m² +76% | 2019 |
|---|
| 25, Mayfield Place177 m away | 74 m² | 144 m² | +70 m² +95% | 2020 |
|---|
| 38, Winchcombe Road460 m away | 74 m² | 144 m² | +70 m² +95% | 2013 |
|---|
| 7, West Terrace878 m away | 128 m² | 197 m² | +69 m² +54% | 2025 |
|---|
| 9, Willowfield Square897 m away | 104 m² | 171 m² | +67 m² +64% | 2008 |
|---|
| 5, Lewes Road0 m away | 206 m² | 272 m² | +66 m² +32% | 2019 |
|---|
| Tudor Lodge, 2a, Kings Drive623 m away | 105 m² | 168 m² | +63 m² +60% | 2023 |
|---|
| 2, Kings Drive623 m away | 109 m² | 171 m² | +62 m² +57% | 2024 |
|---|
| 26, Bridgemere Road794 m away | 94 m² | 154 m² | +60 m² +64% | 2023 |
|---|
| 9, Dittons Road925 m away | 166 m² | 226 m² | +60 m² +36% | 2023 |
|---|
| 5, Selwyn Drive988 m away | 103 m² | 161 m² | +58 m² +56% | 2024 |
|---|
| 54, Bridgemere Road954 m away | 103 m² | 161 m² | +58 m² +56% | 2016 |
|---|
| 14, Arlington Road912 m away | 331 m² | 388 m² | +57 m² +17% | 2019 |
|---|
| 35, Pevensey Road916 m away | 37 m² | 92 m² | +55 m² +149% | 2023 |
|---|
| 39, Bedford Grove207 m away | 78 m² | 132 m² | +54 m² +69% | 2017 |
|---|
| 43, Pevensey Road916 m away | 180 m² | 233 m² | +53 m² +29% | 2025 |
|---|
| 32a, Prideaux Road797 m away | 153 m² | 205 m² | +52 m² +34% | 2015 |
|---|
| 36a, Saffrons Road963 m away | 186 m² | 237 m² | +51 m² +27% | 2020 |
|---|
| 12, Enys Road497 m away | 60 m² | 111 m² | +51 m² +85% | 2013 |
|---|
| Flat 3, 37, Arlington Road853 m away | 83 m² | 134 m² | +51 m² +61% | 2009 |
|---|
| 91, Firle Road487 m away | 59 m² | 109 m² | +50 m² +85% | 2021 |
|---|
| 9, Willowfield Road853 m away | 156 m² | 206 m² | +50 m² +32% | 2010 |
|---|
| 44, Cavendish Place947 m away | 170 m² | 218 m² | +48 m² +28% | 2019 |
|---|
| 28, Whitley Road947 m away | 86 m² | 133 m² | +47 m² +55% | 2013 |
|---|
| 158, Ashford Road620 m away | 53 m² | 99 m² | +46 m² +87% | 2020 |
|---|
| 7, Lushington Road958 m away | 72 m² | 118 m² | +46 m² +64% | 2011 |
|---|
| 13, Le Brun Road476 m away | 195 m² | 240 m² | +45 m² +23% | 2025 |
|---|
| 78, Firle Road705 m away | 49 m² | 94 m² | +45 m² +92% | 2023 |
|---|
| 118, Ringwood Road703 m away | 97 m² | 142 m² | +45 m² +46% | 2019 |
|---|
| 13, Bedford Grove274 m away | 221 m² | 266 m² | +45 m² +20% | 2018 |
|---|
| 11, Bedford Grove274 m away | 221 m² | 266 m² | +45 m² +20% | 2018 |
|---|
| 110, Whitley Road681 m away | 190 m² | 233 m² | +43 m² +23% | 2015 |
|---|
| 20, Arlington Road912 m away | 43 m² | 86 m² | +43 m² +100% | 2014 |
|---|
| 7, Cavendish Avenue552 m away | 120 m² | 162 m² | +42 m² +35% | 2023 |
|---|
| Wistaria House, 19, Ratton Road972 m away | 152 m² | 194 m² | +42 m² +28% | 2023 |
|---|
| 100, Moy Avenue901 m away | 98 m² | 140 m² | +42 m² +43% | 2015 |
|---|
| 7, Bedfordwell Road198 m away | 115 m² | 156 m² | +41 m² +36% | 2025 |
|---|
| 85, Langney Road823 m away | 116 m² | 157 m² | +41 m² +35% | 2024 |
|---|
| 64, Seaside983 m away | 64 m² | 105 m² | +41 m² +64% | 2022 |
|---|
| 27, Prideaux Road578 m away | 150 m² | 191 m² | +41 m² +27% | 2020 |
|---|
| 153, Seaside984 m away | 31 m² | 72 m² | +41 m² +132% | 2009 |
|---|
| Flat 16, Merewood Court, 60, Carew Road735 m away | 58 m² | 98 m² | +40 m² +69% | 2025 |
|---|
| Four Gables, St Annes Road631 m away | 187 m² | 227 m² | +40 m² +21% | 2024 |
|---|
| 18, Gilbert Road881 m away | 101 m² | 141 m² | +40 m² +40% | 2020 |
|---|
| 22, Prideaux Road797 m away | 180 m² | 219 m² | +39 m² +22% | 2013 |
|---|
| 93, Pevensey Road951 m away | 35 m² | 74 m² | +39 m² +111% | 2012 |
|---|
| Flat 4, 24, Upperton Gardens529 m away | 74 m² | 112 m² | +38 m² +51% | 2025 |
|---|
| 19, Western Road689 m away | 83 m² | 121 m² | +38 m² +46% | 2022 |
|---|
| Apartment 70, 20, Upperton Road675 m away | 31 m² | 69 m² | +38 m² +123% | 2020 |
|---|
| 11, West Terrace878 m away | 56 m² | 94 m² | +38 m² +68% | 2020 |
|---|
| 28, St Leonards Road464 m away | 40 m² | 78 m² | +38 m² +95% | 2015 |
|---|
| 46, Longstone Road682 m away | 64 m² | 101 m² | +37 m² +58% | 2023 |
|---|
| Flat 3, 4, Upperton Gardens529 m away | 74 m² | 111 m² | +37 m² +50% | 2016 |
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| 30, Old Orchard Road964 m away | 72 m² | 109 m² | +37 m² +51% | 2015 |
|---|
| 2, Chawbrook Mews, Chawbrook Road554 m away | 47 m² | 84 m² | +37 m² +79% | 2014 |
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| 15, Hoad Road861 m away | 66 m² | 103 m² | +37 m² +56% | 2014 |
|---|
| 14, Gilbert Road881 m away | 47 m² | 83 m² | +36 m² +77% | 2023 |
|---|
| 87, Bourne Street561 m away | 90 m² | 126 m² | +36 m² +40% | 2022 |
|---|
| 89, Enys Road238 m away | 95 m² | 130 m² | +35 m² +37% | 2024 |
|---|
| Flat 5, 1c, Susans Road971 m away | 33 m² | 68 m² | +35 m² +106% | 2022 |
|---|
| 1, Bernard Lane564 m away | 70 m² | 105 m² | +35 m² +50% | 2021 |
|---|
| Flat 14, Hamilton House, 34, Upperton Road774 m away | 39 m² | 74 m² | +35 m² +90% | 2021 |
|---|
| Apartment 71, 20, Upperton Road675 m away | 32 m² | 67 m² | +35 m² +109% | 2020 |
|---|
| Flat 1, 11, Southfields Road800 m away | 95 m² | 130 m² | +35 m² +37% | 2018 |
|---|
| 14a, Prideaux Road797 m away | 61 m² | 95 m² | +34 m² +56% | 2024 |
|---|
| 176 - 180, Terminus Road985 m away | 43 m² | 77 m² | +34 m² +79% | 2013 |
|---|
| 87, Firle Road626 m away | 120 m² | 153 m² | +33 m² +28% | 2026 |
|---|
| Flat 27, Carew Views, 30, Carew Road456 m away | 29 m² | 62 m² | +33 m² +114% | 2025 |
|---|
| 27, Gilbert Road881 m away | 107 m² | 140 m² | +33 m² +31% | 2022 |
|---|
| 33, Dudley Road650 m away | 97 m² | 130 m² | +33 m² +34% | 2020 |
|---|
| 3, Oxford Road827 m away | 67 m² | 100 m² | +33 m² +49% | 2015 |
|---|
| Flat 1, 29, Arlington Road853 m away | 95 m² | 128 m² | +33 m² +35% | 2014 |
|---|
| 34, Ringwood Road951 m away | 115 m² | 147 m² | +32 m² +28% | 2023 |
|---|
| 38, Willowfield Road821 m away | 48 m² | 80 m² | +32 m² +67% | 2018 |
|---|
| 34, Avondale Road772 m away | 76 m² | 108 m² | +32 m² +42% | 2013 |
|---|
| 25, Willard Close876 m away | 62 m² | 93 m² | +31 m² +50% | 2024 |
|---|
| 9, Winchcombe Road460 m away | 93 m² | 124 m² | +31 m² +33% | 2023 |
|---|
| 23, Cavendish Avenue552 m away | 99 m² | 130 m² | +31 m² +31% | 2022 |
|---|
| 67, St Philips Avenue842 m away | 114 m² | 144 m² | +30 m² +26% | 2026 |
|---|
| 7, Willowfield Road853 m away | 147 m² | 177 m² | +30 m² +20% | 2025 |
|---|
| 2, Bilbury Mews341 m away | 38 m² | 68 m² | +30 m² +79% | 2020 |
|---|
| Flat 7, Delamere Court, Hyde Road944 m away | 54 m² | 84 m² | +30 m² +56% | 2015 |
|---|
| 14, Astaire Avenue777 m away | 119 m² | 149 m² | +30 m² +25% | 2014 |
|---|
| 8, Montgomery Mews, Commercial Road525 m away | 61 m² | 90 m² | +29 m² +48% | 2025 |
|---|
| 21, Willowfield Square897 m away | 130 m² | 159 m² | +29 m² +22% | 2014 |
|---|
| 42, Avondale Road772 m away | 73 m² | 102 m² | +29 m² +40% | 2012 |
|---|
| Flat 1, 4, Bedford Grove274 m away | 53 m² | 81 m² | +28 m² +53% | 2021 |
|---|
| 15, Whitley Road834 m away | 98 m² | 126 m² | +28 m² +29% | 2021 |
|---|
| Flat 19, St. Helenas Court, 7, Mill Road902 m away | 33 m² | 61 m² | +28 m² +85% | 2021 |
|---|
| 35, Willowfield Road833 m away | 110 m² | 138 m² | +28 m² +25% | 2020 |
|---|
| 3, Saxon Ground758 m away | 79 m² | 107 m² | +28 m² +35% | 2016 |
|---|
| Flat 6, 60, The Goffs950 m away | 65 m² | 93 m² | +28 m² +43% | 2011 |
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| 44, Susans Road722 m away | 99 m² | 126 m² | +27 m² +27% | 2024 |
|---|
| 68, Susans Road643 m away | 68 m² | 95 m² | +27 m² +40% | 2023 |
|---|
| 24, Clarence Road807 m away | 97 m² | 124 m² | +27 m² +28% | 2022 |
|---|
| Flat 3, 46, Upperton Gardens523 m away | 19 m² | 46 m² | +27 m² +142% | 2021 |
|---|
| Flat 4, Pebble Court, 16, Bourne Street954 m away | 20 m² | 47 m² | +27 m² +135% | 2019 |
|---|
| Flat 2, Hadley House, Upperton Road675 m away | 84 m² | 111 m² | +27 m² +32% | 2013 |
|---|
| Flat 2, 58, Tideswell Road750 m away | 51 m² | 77 m² | +26 m² +51% | 2025 |
|---|
| Flat 5, Pegasus Court, 29, St Leonards Road369 m away | 43 m² | 69 m² | +26 m² +60% | 2023 |
|---|
| Flat 1, 17, Old Orchard Road964 m away | 107 m² | 133 m² | +26 m² +24% | 2022 |
|---|
| Flat 3, 43, Enys Road497 m away | 67 m² | 93 m² | +26 m² +39% | 2021 |
|---|
| 3, Susans Road971 m away | 79 m² | 105 m² | +26 m² +33% | 2017 |
|---|
| 7, Moy Avenue571 m away | 113 m² | 139 m² | +26 m² +23% | 2016 |
|---|
| 123, Tideswell Road763 m away | 131 m² | 157 m² | +26 m² +20% | 2014 |
|---|
| Flat 6, Hadley House, Upperton Road675 m away | 85 m² | 111 m² | +26 m² +31% | 2013 |
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| Flat 3, 23, The Goffs954 m away | 109 m² | 135 m² | +26 m² +24% | 2013 |
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| 2, Leaf Glen591 m away | 123 m² | 148 m² | +25 m² +20% | 2016 |
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| 72, Whitley Road767 m away | 125 m² | 150 m² | +25 m² +20% | 2015 |
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| 20, Dursley Road492 m away | 63 m² | 88 m² | +25 m² +40% | 2014 |
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| 20, Eversfield Road304 m away | 39 m² | 64 m² | +25 m² +64% | 2010 |
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| Flat 3, Sunridge, 14, Dittons Road925 m away | 157 m² | 181 m² | +24 m² +15% | 2026 |
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| 30, Kings Drive623 m away | 138 m² | 162 m² | +24 m² +17% | 2024 |
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| 8b, Willowfield Road853 m away | 68 m² | 92 m² | +24 m² +35% | 2023 |
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| 91, Langney Road823 m away | 122 m² | 146 m² | +24 m² +20% | 2022 |
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| 48, Winchcombe Road460 m away | 72 m² | 96 m² | +24 m² +33% | 2019 |
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| 68, Cavendish Avenue561 m away | 141 m² | 165 m² | +24 m² +17% | 2015 |
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| Flat 14, Eversfield House, The Avenue321 m away | 61 m² | 85 m² | +24 m² +39% | 2013 |
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| 98a, Ashford Road639 m away | 63 m² | 87 m² | +24 m² +38% | 2011 |
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| 31, Pevensey Road916 m away | 30 m² | 54 m² | +24 m² +80% | 2009 |
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| 5, Ashburnham Road658 m away | 140 m² | 163 m² | +23 m² +16% | 2024 |
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| 12, Sheen Road870 m away | 71 m² | 94 m² | +23 m² +32% | 2024 |
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| 25, Firle Road851 m away | 74 m² | 97 m² | +23 m² +31% | 2023 |
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| Flat 31, Eversley Court, 14, St Annes Road525 m away | 52 m² | 75 m² | +23 m² +44% | 2022 |
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| Flat 5, Thornwood, The Avenue489 m away | 51 m² | 74 m² | +23 m² +45% | 2021 |
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| 5, St Georges Road776 m away | 83 m² | 106 m² | +23 m² +28% | 2021 |
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| 5, Eton Mews412 m away | 69 m² | 92 m² | +23 m² +33% | 2020 |
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| Apartment 72, 20, Upperton Road675 m away | 43 m² | 66 m² | +23 m² +53% | 2020 |
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| Flat 2, 37, Upperton Gardens605 m away | 50 m² | 73 m² | +23 m² +46% | 2018 |
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| 121, Ringwood Road703 m away | 90 m² | 113 m² | +23 m² +26% | 2017 |
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| 24, Avondale Road772 m away | 73 m² | 96 m² | +23 m² +32% | 2013 |
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| Flat 2, 26b, Cavendish Place1000 m away | 103 m² | 126 m² | +23 m² +22% | 2011 |
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| 105, Whitley Road473 m away | 132 m² | 154 m² | +22 m² +17% | 2026 |
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| Flat 6, 23, St Annes Road466 m away | 40 m² | 62 m² | +22 m² +55% | 2020 |
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| 2, The Chantry, Upperton Road827 m away | 54 m² | 76 m² | +22 m² +41% | 2019 |
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| 7b, Bolton Road917 m away | 34 m² | 56 m² | +22 m² +65% | 2019 |
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| 17, Moy Avenue571 m away | 94 m² | 116 m² | +22 m² +23% | 2016 |
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| 43, Leslie Street856 m away | 79 m² | 101 m² | +22 m² +28% | 2013 |
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| 4a, Wellesley Road708 m away | 59 m² | 80 m² | +21 m² +36% | 2025 |
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| Flat 8, Chartwell House, 1a, Wharf Road707 m away | 47 m² | 68 m² | +21 m² +45% | 2024 |
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| 16, Cavendish Avenue594 m away | 124 m² | 145 m² | +21 m² +17% | 2023 |
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| Flat 8, The Church, 16, Ceylon Place950 m away | 127 m² | 148 m² | +21 m² +17% | 2022 |
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| 32, Le Brun Road564 m away | 117 m² | 138 m² | +21 m² +18% | 2020 |
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| 69, Ringwood Road951 m away | 125 m² | 146 m² | +21 m² +17% | 2018 |
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| 11, Kings Close710 m away | 70 m² | 91 m² | +21 m² +30% | 2015 |
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| Flat 10, Eversfield House, The Avenue321 m away | 64 m² | 85 m² | +21 m² +33% | 2013 |
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| 30, Grove Road886 m away | 64 m² | 85 m² | +21 m² +33% | 2010 |
|---|
| 3, Western Road641 m away | 82 m² | 102 m² | +20 m² +24% | 2020 |
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| Apartment 59, 20, Upperton Road675 m away | 31 m² | 51 m² | +20 m² +65% | 2020 |
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| Apartment 46, 20, Upperton Road675 m away | 31 m² | 51 m² | +20 m² +65% | 2020 |
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| Apartment 33, 20, Upperton Road675 m away | 31 m² | 51 m² | +20 m² +65% | 2020 |
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| Apartment 6, 20, Upperton Road675 m away | 31 m² | 51 m² | +20 m² +65% | 2020 |
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| Apartment 20, 20, Upperton Road675 m away | 31 m² | 51 m² | +20 m² +65% | 2020 |
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| 24, Belmore Road789 m away | 33 m² | 53 m² | +20 m² +61% | 2018 |
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| 11, Hyde Road952 m away | 39 m² | 59 m² | +20 m² +51% | 2018 |
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| 105, Ringwood Road703 m away | 101 m² | 121 m² | +20 m² +20% | 2015 |
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| 171, Terminus Road960 m away | 31 m² | 51 m² | +20 m² +65% | 2015 |
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| 12, Kings Close710 m away | 74 m² | 94 m² | +20 m² +27% | 2014 |
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| Flat 12, Alcazar Court, 25, Arundel Road279 m away | 53 m² | 73 m² | +20 m² +38% | 2013 |
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| Flat 5, 159, Seaside984 m away | 25 m² | 45 m² | +20 m² +80% | 2013 |
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| Flat 9, Montclare House, 28, Upperton Road695 m away | 57 m² | 77 m² | +20 m² +35% | 2012 |
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| 10, Moat Croft Road944 m away | 30 m² | 50 m² | +20 m² +67% | 2010 |
|---|
| 18, Upperton Gardens529 m away | 26 m² | 46 m² | +20 m² +77% | 2009 |
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| 38, Clarence Road807 m away | 98 m² | 117 m² | +19 m² +19% | 2026 |
|---|
| 4, Laleham Close890 m away | 101 m² | 120 m² | +19 m² +19% | 2025 |
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| Flat 1, 15, Ceylon Place979 m away | 53 m² | 72 m² | +19 m² +36% | 2025 |
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| Flat 1, 56, Grove Road997 m away | 45 m² | 64 m² | +19 m² +42% | 2024 |
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| Flat 2, Stafford House, Southfields Road760 m away | 82 m² | 101 m² | +19 m² +23% | 2023 |
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| 10, Bolton Road944 m away | 36 m² | 55 m² | +19 m² +53% | 2023 |
|---|
| 58, Ringwood Road951 m away | 120 m² | 139 m² | +19 m² +16% | 2022 |
|---|
| 4, Willowfield Square897 m away | 105 m² | 124 m² | +19 m² +18% | 2021 |
|---|
| 25, Gildredge Road915 m away | 51 m² | 70 m² | +19 m² +37% | 2021 |
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| Flat 11, Southdown Heights, 38, St Leonards Road464 m away | 35 m² | 54 m² | +19 m² +54% | 2019 |
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| 17, Manifold Road624 m away | 87 m² | 106 m² | +19 m² +22% | 2019 |
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| 131a, Seaside965 m away | 24 m² | 43 m² | +19 m² +79% | 2019 |
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| 21, Arlington Road912 m away | 103 m² | 122 m² | +19 m² +18% | 2016 |
|---|
| Ground Floor, 122 - 134, Seaside934 m away | 51 m² | 70 m² | +19 m² +37% | 2013 |
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| 13, The Avenue565 m away | 61 m² | 80 m² | +19 m² +31% | 2012 |
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| 27, Longstone Road682 m away | 93 m² | 112 m² | +19 m² +20% | 2012 |
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| Flat 2, 11, Upper Avenue267 m away | 35 m² | 54 m² | +19 m² +54% | 2010 |
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| Flat 6, Lewes Court, 29, Lewes Road220 m away | 66 m² | 84 m² | +18 m² +27% | 2024 |
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| 183, Langney Road932 m away | 40 m² | 58 m² | +18 m² +45% | 2022 |
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| Flat 5, 10, Saffrons Road971 m away | 86 m² | 104 m² | +18 m² +21% | 2022 |
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| Flat 1, 11, Upper Avenue267 m away | 91 m² | 109 m² | +18 m² +20% | 2021 |
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| 52, Longstone Road661 m away | 109 m² | 127 m² | +18 m² +17% | 2019 |
|---|
| Flat 16, Carew Court, 1, Carew Road274 m away | 83 m² | 101 m² | +18 m² +22% | 2018 |
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| 25, Beltring Road827 m away | 83 m² | 101 m² | +18 m² +22% | 2018 |
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| 71, Enys Road238 m away | 60 m² | 78 m² | +18 m² +30% | 2016 |
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| 41, Pevensey Road916 m away | 37 m² | 55 m² | +18 m² +49% | 2016 |
|---|
| 55, St Philips Avenue842 m away | 111 m² | 129 m² | +18 m² +16% | 2014 |
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