Finding extended homes…
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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 BH1 3EN
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 |
|---|---|---|---|---|
| 27, St Swithuns Road689 m away | 205 m² | 431 m² | +226 m² +110% | 2015 |
| 87, Southcote Road713 m away | 206 m² | 319 m² | +113 m² +55% | 2023 |
| Flat 1, Roysdean Manor, 5, Derby Road431 m away | 75 m² | 180 m² | +105 m² +140% | 2010 |
| 51b, Christchurch Road369 m away | 160 m² | 247 m² | +87 m² +54% | 2010 |
| 15, Knole Gardens639 m away | 92 m² | 174 m² | +82 m² +89% | 2021 |
| 11, Northcote Road838 m away | 94 m² | 173 m² | +79 m² +84% | 2026 |
| 1, Woodford Road427 m away | 152 m² | 230 m² | +78 m² +51% | 2025 |
| The Lodge, 18, Manor Road203 m away | 75 m² | 149 m² | +74 m² +99% | 2016 |
| 8, Hamilton Road908 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.
| 50 m² |
| 124 m² |
| +74 m² +148% |
| 2008 |
| Avonwood, 20, Owls Road994 m away | 70 m² | 143 m² | +73 m² +104% | 2009 |
|---|
| Flat 2, 1, Lytton Road894 m away | 104 m² | 169 m² | +65 m² +63% | 2020 |
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| 190, Holdenhurst Road898 m away | 50 m² | 115 m² | +65 m² +130% | 2010 |
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| 171, Southcote Road799 m away | 56 m² | 120 m² | +64 m² +114% | 2025 |
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| Flat 36, Embassy Court, 26, Gervis Road796 m away | 86 m² | 149 m² | +63 m² +73% | 2019 |
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| 4, Annerley Road445 m away | 46 m² | 107 m² | +61 m² +133% | 2022 |
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| Flat 5, Burlington Mansions, 9, Owls Road942 m away | 116 m² | 172 m² | +56 m² +48% | 2021 |
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| 1, Knyveton Road507 m away | 51 m² | 107 m² | +56 m² +110% | 2018 |
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| 7, Northcote Road838 m away | 44 m² | 97 m² | +53 m² +120% | 2024 |
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| 1, Gordon Road749 m away | 165 m² | 218 m² | +53 m² +32% | 2015 |
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| Flat 49, Burlington Mansions, 9, Owls Road942 m away | 68 m² | 117 m² | +49 m² +72% | 2022 |
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| Flat 16, Grange Court, Gervis Road484 m away | 45 m² | 94 m² | +49 m² +109% | 2020 |
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| 60d, Southcote Road704 m away | 68 m² | 117 m² | +49 m² +72% | 2014 |
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| 30, St Swithuns Road648 m away | 110 m² | 157 m² | +47 m² +43% | 2025 |
|---|
| 219, Old Christchurch Road925 m away | 67 m² | 114 m² | +47 m² +70% | 2012 |
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| 24, Carlton Road654 m away | 271 m² | 317 m² | +46 m² +17% | 2019 |
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| Flat 47, The Reef, 16, Boscombe Spa Road799 m away | 59 m² | 103 m² | +44 m² +75% | 2017 |
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| Flat 5, The Reef, 16, Boscombe Spa Road799 m away | 86 m² | 127 m² | +41 m² +48% | 2025 |
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| 60a, Southcote Road704 m away | 47 m² | 88 m² | +41 m² +87% | 2014 |
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| Flat 3, 224a, Holdenhurst Road969 m away | 92 m² | 132 m² | +40 m² +43% | 2025 |
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| Flat 9, Regency Court, 36, Knyveton Road554 m away | 97 m² | 137 m² | +40 m² +41% | 2023 |
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| Flat 2, Seacroft Court, Sea Road994 m away | 42 m² | 82 m² | +40 m² +95% | 2022 |
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| Flat 1, 6, Undercliff Road802 m away | 30 m² | 70 m² | +40 m² +133% | 2019 |
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| 11, Undercliff Road802 m away | 57 m² | 97 m² | +40 m² +70% | 2009 |
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| Flat C9, Elizabeth Court, Grove Road839 m away | 52 m² | 91 m² | +39 m² +75% | 2018 |
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| Flat 1, 18, Carlton Road654 m away | 33 m² | 72 m² | +39 m² +118% | 2013 |
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| 1b, Annerley Road445 m away | 53 m² | 91 m² | +38 m² +72% | 2025 |
|---|
| 12a, Buckingham Mansions, Bath Road913 m away | 94 m² | 132 m² | +38 m² +40% | 2020 |
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| Woodland Point, Wootton Mount982 m away | 37 m² | 75 m² | +38 m² +103% | 2019 |
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| Flat 9, Earls Court, 9, Gervis Road397 m away | 93 m² | 130 m² | +37 m² +40% | 2011 |
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| 84, Southcote Road799 m away | 73 m² | 110 m² | +37 m² +51% | 2010 |
|---|
| 479, Christchurch Road829 m away | 29 m² | 65 m² | +36 m² +124% | 2019 |
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| Flat 5, 5, St Johns Road841 m away | 46 m² | 82 m² | +36 m² +78% | 2012 |
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| 70, Spring Road954 m away | 107 m² | 142 m² | +35 m² +33% | 2022 |
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| 57, Northcote Road838 m away | 66 m² | 100 m² | +34 m² +52% | 2014 |
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| Flat 29, Sandykeld, 26, Manor Road425 m away | 173 m² | 206 m² | +33 m² +19% | 2018 |
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| 25, Corporation Road886 m away | 59 m² | 92 m² | +33 m² +56% | 2013 |
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| Flat 9, 28, Argyll Road998 m away | 40 m² | 71 m² | +31 m² +78% | 2020 |
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| 30, Hamilton Road908 m away | 45 m² | 75 m² | +30 m² +67% | 2019 |
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| Apartment 6, The Battalions, 2a, Portchester Place941 m away | 66 m² | 96 m² | +30 m² +45% | 2019 |
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| Flat 4, St. Andrews Court, 22, Knole Road796 m away | 54 m² | 84 m² | +30 m² +56% | 2010 |
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| Flat 21, Albany, Manor Road0 m away | 165 m² | 194 m² | +29 m² +18% | 2026 |
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| 56, Spring Road954 m away | 55 m² | 84 m² | +29 m² +53% | 2024 |
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| Flat 3, Grange Court, Gervis Road484 m away | 105 m² | 134 m² | +29 m² +28% | 2016 |
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| Bassett House, 41, Knyveton Road528 m away | 64 m² | 93 m² | +29 m² +45% | 2010 |
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| Flat D3, 453, Christchurch Road829 m away | 78 m² | 106 m² | +28 m² +36% | 2025 |
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| Flat 13, Roysdean Manor, 5, Derby Road431 m away | 50 m² | 78 m² | +28 m² +56% | 2021 |
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| Flat 8, Roysdean Manor, 5, Derby Road431 m away | 59 m² | 87 m² | +28 m² +47% | 2020 |
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| Flat 5, Tattersalls, 30 - 32, Derby Road219 m away | 85 m² | 113 m² | +28 m² +33% | 2014 |
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| 60b, Southcote Road704 m away | 67 m² | 95 m² | +28 m² +42% | 2014 |
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| Flat 51, Keverstone Court, 97, Manor Road529 m away | 77 m² | 104 m² | +27 m² +35% | 2022 |
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| Flat 5, 7, Knyveton Road507 m away | 32 m² | 59 m² | +27 m² +84% | 2018 |
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| 51, Christchurch Road369 m away | 48 m² | 75 m² | +27 m² +56% | 2013 |
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| 7, Hamilton Road871 m away | 152 m² | 179 m² | +27 m² +18% | 2013 |
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| Flat 6, 18, Hamilton Road908 m away | 24 m² | 51 m² | +27 m² +113% | 2011 |
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| 8, Amberley Court, Bath Road981 m away | 71 m² | 97 m² | +26 m² +37% | 2022 |
|---|
| Flat 7, Ocean View, 1 - 3, Undercliff Road802 m away | 48 m² | 74 m² | +26 m² +54% | 2021 |
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| Flat 3, 30, Carlton Road654 m away | 43 m² | 69 m² | +26 m² +60% | 2019 |
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| Flat 1, 8, Southcote Road678 m away | 24 m² | 50 m² | +26 m² +108% | 2019 |
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| Flat 40, Keverstone Court, 97, Manor Road529 m away | 95 m² | 121 m² | +26 m² +27% | 2009 |
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| 12, Elwyn Road934 m away | 72 m² | 97 m² | +25 m² +35% | 2024 |
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| Flat 6, Jacey House, Bath Road862 m away | 33 m² | 57 m² | +24 m² +73% | 2024 |
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| 11, Knole Road701 m away | 147 m² | 171 m² | +24 m² +16% | 2022 |
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| 196, Holdenhurst Road898 m away | 38 m² | 62 m² | +24 m² +63% | 2017 |
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| 59, Windham Road942 m away | 78 m² | 102 m² | +24 m² +31% | 2014 |
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| Flat 11, Grange Court, Gervis Road484 m away | 55 m² | 79 m² | +24 m² +44% | 2010 |
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| 8, The Cotton Exchange, 501 - 507, Christchurch Road984 m away | 36 m² | 59 m² | +23 m² +64% | 2025 |
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| 6, The Haven, 16, St Swithuns Road South518 m away | 43 m² | 66 m² | +23 m² +53% | 2022 |
|---|
| Flat A11, Elizabeth Court, Grove Road839 m away | 69 m² | 92 m² | +23 m² +33% | 2022 |
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| Flat 12, Roysdean Manor, 5, Derby Road431 m away | 50 m² | 73 m² | +23 m² +46% | 2021 |
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| Flat 10, Toft Mansions, 43, Manor Road73 m away | 69 m² | 92 m² | +23 m² +33% | 2020 |
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| 18 - 22, Holdenhurst Road755 m away | 65 m² | 88 m² | +23 m² +35% | 2016 |
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| 16, Gardens View656 m away | 41 m² | 64 m² | +23 m² +56% | 2013 |
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| 15, St Johns Road841 m away | 34 m² | 57 m² | +23 m² +68% | 2009 |
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| 33, Hamilton Road871 m away | 21 m² | 44 m² | +23 m² +110% | 2009 |
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| Flat 2, 14, Hamilton Road908 m away | 53 m² | 75 m² | +22 m² +42% | 2023 |
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| Flat 50, Linden Hall, 80, Christchurch Road590 m away | 140 m² | 162 m² | +22 m² +16% | 2022 |
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| 5d, Spencer Road610 m away | 40 m² | 62 m² | +22 m² +55% | 2020 |
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| 17, Carlton Road692 m away | 101 m² | 123 m² | +22 m² +22% | 2016 |
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| Flat 4, 18, Hamilton Road908 m away | 21 m² | 43 m² | +22 m² +105% | 2011 |
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| 20, The Litzo, 37 - 41, Boscombe Spa Road786 m away | 63 m² | 85 m² | +22 m² +35% | 2009 |
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| 34a, Windham Road913 m away | 86 m² | 107 m² | +21 m² +24% | 2023 |
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| 64, Southcote Road704 m away | 116 m² | 137 m² | +21 m² +18% | 2020 |
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| 23, Christchurch Road266 m away | 50 m² | 71 m² | +21 m² +42% | 2019 |
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| 50, Southcote Road704 m away | 30 m² | 51 m² | +21 m² +70% | 2018 |
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| 13, St Johns Road841 m away | 22 m² | 43 m² | +21 m² +95% | 2015 |
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| 4, Caledonian Court, 446, Christchurch Road730 m away | 27 m² | 48 m² | +21 m² +78% | 2014 |
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| Flat 2, 31, Boscombe Spa Road786 m away | 96 m² | 117 m² | +21 m² +22% | 2013 |
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| 24, Aylesbury Road937 m away | 55 m² | 76 m² | +21 m² +38% | 2013 |
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| 25, St Clements Road973 m away | 63 m² | 84 m² | +21 m² +33% | 2010 |
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| Flat 5, Dunholme Manor, 55, Manor Road160 m away | 87 m² | 107 m² | +20 m² +23% | 2019 |
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| 3, Palm Court, 38, Christchurch Road411 m away | 36 m² | 56 m² | +20 m² +56% | 2018 |
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| Flat 1, 6, Randolph Road997 m away | 65 m² | 85 m² | +20 m² +31% | 2013 |
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| Ground Floor And Basement Shop, 4, Lansdowne Road897 m away | 54 m² | 74 m² | +20 m² +37% | 2008 |
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| Flat 30, The Point, Marina Close935 m away | 69 m² | 88 m² | +19 m² +28% | 2026 |
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| Flat 74, The Chocolate Box, 8 - 10, Christchurch Road688 m away | 34 m² | 53 m² | +19 m² +56% | 2025 |
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| Flat 2, 11, St Johns Road841 m away | 71 m² | 90 m² | +19 m² +27% | 2025 |
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| Flat 2, 447, Christchurch Road758 m away | 50 m² | 69 m² | +19 m² +38% | 2024 |
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| 5a, Spencer Road610 m away | 75 m² | 94 m² | +19 m² +25% | 2023 |
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| Flat 12, Keverstone Court, 97, Manor Road485 m away | 109 m² | 128 m² | +19 m² +17% | 2014 |
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| 31b, St Clements Road973 m away | 59 m² | 78 m² | +19 m² +32% | 2014 |
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| Flat 6, 23, Hamilton Road871 m away | 25 m² | 44 m² | +19 m² +76% | 2009 |
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| Flat 8, 4, Hengist Road773 m away | 80 m² | 98 m² | +18 m² +23% | 2024 |
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| Flat 5, Hurlingham House, 14, Manor Road229 m away | 60 m² | 78 m² | +18 m² +30% | 2023 |
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| Flat 1, Lansdowne House, Christchurch Road626 m away | 62 m² | 80 m² | +18 m² +29% | 2023 |
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| 66a, Southcote Road704 m away | 48 m² | 66 m² | +18 m² +38% | 2021 |
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| 36, Frances Road583 m away | 46 m² | 64 m² | +18 m² +39% | 2019 |
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| Flat 4, 17, Undercliff Road802 m away | 55 m² | 73 m² | +18 m² +33% | 2019 |
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| Flat 4, 4, Drummond Road812 m away | 55 m² | 73 m² | +18 m² +33% | 2019 |
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| 469 - 471, Christchurch Road829 m away | 56 m² | 74 m² | +18 m² +32% | 2019 |
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| 29, Boscombe Spa Road786 m away | 30 m² | 48 m² | +18 m² +60% | 2013 |
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| 9, Argyll Road996 m away | 32 m² | 50 m² | +18 m² +56% | 2009 |
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| Flat 8, 60, Drummond Road864 m away | 48 m² | 65 m² | +17 m² +35% | 2024 |
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| 9, The Haven, 16, St Swithuns Road South518 m away | 31 m² | 48 m² | +17 m² +55% | 2023 |
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| 234, Holdenhurst Road969 m away | 28 m² | 45 m² | +17 m² +61% | 2015 |
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| 39, St Swithuns Road689 m away | 79 m² | 96 m² | +17 m² +22% | 2014 |
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| Flat 1, Caledonian Court, 446, Christchurch Road730 m away | 31 m² | 48 m² | +17 m² +55% | 2014 |
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| 46, Windham Road913 m away | 76 m² | 93 m² | +17 m² +22% | 2014 |
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| 44, Windham Road913 m away | 85 m² | 102 m² | +17 m² +20% | 2014 |
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| Flat A, Chatfield Court, 10, Boscombe Spa Road693 m away | 79 m² | 96 m² | +17 m² +22% | 2013 |
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| 16, Knole Road701 m away | 28 m² | 45 m² | +17 m² +61% | 2010 |
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| 32 - 34, Frances Road583 m away | 49 m² | 66 m² | +17 m² +35% | 2009 |
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| 20, Aylesbury Road937 m away | 27 m² | 44 m² | +17 m² +63% | 2009 |
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| Ocean Court, 28, Derby Road402 m away | 31 m² | 48 m² | +17 m² +55% | 2008 |
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| Flat 7, The Point, Marina Close935 m away | 78 m² | 95 m² | +17 m² +22% | 2008 |
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| G5, Pine Grange, Bath Road950 m away | 59 m² | 75 m² | +16 m² +27% | 2025 |
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| Flat 1, Ledgerwood Court, 8, Owls Road994 m away | 101 m² | 117 m² | +16 m² +16% | 2023 |
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| Flat 2, Zena Court, 9, Adeline Road995 m away | 47 m² | 63 m² | +16 m² +34% | 2021 |
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| Flat 1, Manor Cottage, 25, Christchurch Road266 m away | 63 m² | 79 m² | +16 m² +25% | 2020 |
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| 83b, Manor Road257 m away | 97 m² | 113 m² | +16 m² +16% | 2019 |
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| 175a, Holdenhurst Road921 m away | 39 m² | 55 m² | +16 m² +41% | 2018 |
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| 23, Windham Road920 m away | 77 m² | 93 m² | +16 m² +21% | 2009 |
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| Flat 96, The Chocolate Box, 8 - 10, Christchurch Road688 m away | 88 m² | 103 m² | +15 m² +17% | 2025 |
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| Flat C4, Elizabeth Court, Grove Road800 m away | 64 m² | 79 m² | +15 m² +23% | 2024 |
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| Flat 3, 8, Knole Road701 m away | 26 m² | 41 m² | +15 m² +58% | 2022 |
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| 27, Buckingham Mansions, Bath Road913 m away | 72 m² | 87 m² | +15 m² +21% | 2022 |
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| 27, Cecil Road919 m away | 43 m² | 58 m² | +15 m² +35% | 2021 |
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| Flat 24, Kensington Court, 43, Knyveton Road526 m away | 61 m² | 76 m² | +15 m² +25% | 2020 |
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| Flat 29, Wingfield Court, Manor Road167 m away | 44 m² | 59 m² | +15 m² +34% | 2018 |
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| Flat 5, 7, Holdenhurst Road797 m away | 18 m² | 33 m² | +15 m² +83% | 2018 |
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| Flat 19, Roslin Hall, 6, Manor Road308 m away | 88 m² | 103 m² | +15 m² +17% | 2015 |
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| Flat 1, 55a, Christchurch Road369 m away | 53 m² | 68 m² | +15 m² +28% | 2014 |
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| Flat 4, 447, Christchurch Road758 m away | 37 m² | 52 m² | +15 m² +41% | 2014 |
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| Flat 1, 27, Drummond Road790 m away | 35 m² | 50 m² | +15 m² +43% | 2014 |
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| Flat 3, Montreal House, 21, Cecil Road919 m away | 45 m² | 60 m² | +15 m² +33% | 2014 |
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| Flat 23, Bourne Pines, 44 - 46, Christchurch Road338 m away | 55 m² | 70 m² | +15 m² +27% | 2013 |
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| Flat 7, Knole Hall, 60 - 64, Knyveton Road618 m away | 30 m² | 45 m² | +15 m² +50% | 2011 |
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| Flat 3, Crag Head, 77, Manor Road316 m away | 58 m² | 73 m² | +15 m² +26% | 2009 |
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| Woodheath, 21, Knyveton Road452 m away | 39 m² | 54 m² | +15 m² +38% | 2008 |
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| 9, Boscombe Spa Road664 m away | 33 m² | 48 m² | +15 m² +45% | 2008 |
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| 25, Drummond Road790 m away | 47 m² | 62 m² | +15 m² +32% | 2008 |
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