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 SE20 7AE
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 |
|---|---|---|---|---|
| 18, Reddons Road852 m away | 246 m² | 387 m² | +141 m² +57% | 2012 |
| 130, Maple Road285 m away | 100 m² | 210 m² | +110 m² +110% | 2014 |
| 26, Avington Grove480 m away | 192 m² | 290 m² | +98 m² +51% | 2014 |
| 37, Kings Hall Road718 m away | 187 m² | 280 m² | +93 m² +50% | 2021 |
| 67, Kings Hall Road946 m away | 124 m² | 215 m² | +91 m² +73% | 2020 |
| 41, Elmers End Road671 m away | 116 m² | 201 m² | +85 m² +73% | 2025 |
| 29, Maple Road324 m away | 76 m² | 157 m² | +81 m² +107% | 2018 |
| 194, Beckenham Road614 m away | 337 m² | 418 m² | +81 m² +24% | 2017 |
| 191, Ravenscroft Road527 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.
| 63 m² |
| 135 m² |
| +72 m² +114% |
| 2021 |
| 98, Avenue Road534 m away | 72 m² | 143 m² | +71 m² +99% | 2025 |
|---|
| 10, Alexandra Road926 m away | 129 m² | 200 m² | +71 m² +55% | 2025 |
|---|
| 59, Anerley Park762 m away | 140 m² | 211 m² | +71 m² +51% | 2024 |
|---|
| 26, Ravenscroft Road464 m away | 89 m² | 157 m² | +68 m² +76% | 2025 |
|---|
| 115, Croydon Road657 m away | 261 m² | 329 m² | +68 m² +26% | 2017 |
|---|
| 19, Chesham Crescent362 m away | 105 m² | 172 m² | +67 m² +64% | 2014 |
|---|
| 45, Kingsdale Road385 m away | 64 m² | 128 m² | +64 m² +100% | 2020 |
|---|
| 80, Ravenscroft Road464 m away | 102 m² | 164 m² | +62 m² +61% | 2020 |
|---|
| 48, Barnmead Road749 m away | 117 m² | 179 m² | +62 m² +53% | 2020 |
|---|
| 50, Birkbeck Road568 m away | 106 m² | 166 m² | +60 m² +57% | 2025 |
|---|
| 152, Blandford Road711 m away | 83 m² | 143 m² | +60 m² +72% | 2021 |
|---|
| 295, Beckenham Road559 m away | 125 m² | 185 m² | +60 m² +48% | 2016 |
|---|
| 5a, Villiers Road777 m away | 92 m² | 151 m² | +59 m² +64% | 2019 |
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| 8, Alexandra Road926 m away | 137 m² | 195 m² | +58 m² +42% | 2020 |
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| 263, Kent House Road781 m away | 131 m² | 187 m² | +56 m² +43% | 2024 |
|---|
| 90, Lennard Road840 m away | 204 m² | 260 m² | +56 m² +27% | 2018 |
|---|
| 214, Kent House Road785 m away | 120 m² | 175 m² | +55 m² +46% | 2026 |
|---|
| 34, Jasmine Grove545 m away | 150 m² | 204 m² | +54 m² +36% | 2024 |
|---|
| 6, Kenilworth Road259 m away | 104 m² | 158 m² | +54 m² +52% | 2020 |
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| 7, Alexandra Road926 m away | 135 m² | 189 m² | +54 m² +40% | 2018 |
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| 29, Kingswood Road764 m away | 93 m² | 146 m² | +53 m² +57% | 2026 |
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| 81, Mackenzie Road649 m away | 60 m² | 113 m² | +53 m² +88% | 2022 |
|---|
| 260, Kent House Road785 m away | 113 m² | 166 m² | +53 m² +47% | 2016 |
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| 27, Phoenix Road725 m away | 126 m² | 178 m² | +52 m² +41% | 2024 |
|---|
| 194, Venner Road894 m away | 127 m² | 179 m² | +52 m² +41% | 2024 |
|---|
| 43, Reddons Road837 m away | 181 m² | 233 m² | +52 m² +29% | 2021 |
|---|
| 5, Southey Street468 m away | 94 m² | 144 m² | +50 m² +53% | 2025 |
|---|
| 86, Barnmead Road582 m away | 97 m² | 146 m² | +49 m² +51% | 2022 |
|---|
| 106, Mackenzie Road613 m away | 76 m² | 125 m² | +49 m² +64% | 2016 |
|---|
| 167, Ravenscroft Road527 m away | 97 m² | 145 m² | +48 m² +49% | 2026 |
|---|
| 5, Kenilworth Road259 m away | 98 m² | 146 m² | +48 m² +49% | 2022 |
|---|
| 34, Pelham Road627 m away | 104 m² | 152 m² | +48 m² +46% | 2021 |
|---|
| 17, Villiers Road777 m away | 101 m² | 148 m² | +47 m² +47% | 2024 |
|---|
| 15, Whateley Road685 m away | 85 m² | 132 m² | +47 m² +55% | 2021 |
|---|
| 62, Tremaine Road867 m away | 138 m² | 185 m² | +47 m² +34% | 2019 |
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| 131, Parish Lane590 m away | 75 m² | 122 m² | +47 m² +63% | 2017 |
|---|
| 91, Blandford Road743 m away | 72 m² | 118 m² | +46 m² +64% | 2026 |
|---|
| 10a, Avington Grove480 m away | 58 m² | 104 m² | +46 m² +79% | 2025 |
|---|
| 76, Kings Hall Road835 m away | 203 m² | 248 m² | +45 m² +22% | 2026 |
|---|
| 386, Blandford Road818 m away | 71 m² | 116 m² | +45 m² +63% | 2022 |
|---|
| 311, Blandford Road875 m away | 86 m² | 131 m² | +45 m² +52% | 2022 |
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| 250, Blandford Road709 m away | 66 m² | 109 m² | +43 m² +65% | 2025 |
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| 37, Kingswood Road764 m away | 89 m² | 132 m² | +43 m² +48% | 2024 |
|---|
| 29, Ash Grove596 m away | 85 m² | 128 m² | +43 m² +51% | 2022 |
|---|
| 39, Queen Adelaide Road569 m away | 31 m² | 74 m² | +43 m² +139% | 2010 |
|---|
| 155, Churchfields Road910 m away | 84 m² | 126 m² | +42 m² +50% | 2023 |
|---|
| 116, Mackenzie Road619 m away | 104 m² | 146 m² | +42 m² +40% | 2022 |
|---|
| 33, Kenilworth Road259 m away | 91 m² | 133 m² | +42 m² +46% | 2020 |
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| 18, Green Lane436 m away | 49 m² | 91 m² | +42 m² +86% | 2016 |
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| 48, Chesham Road404 m away | 121 m² | 162 m² | +41 m² +34% | 2025 |
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| 235, Birkbeck Road729 m away | 64 m² | 105 m² | +41 m² +64% | 2025 |
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| 30, Felmingham Road880 m away | 72 m² | 113 m² | +41 m² +57% | 2023 |
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| 11, Lennard Road803 m away | 72 m² | 113 m² | +41 m² +57% | 2014 |
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| 36, Pelham Road627 m away | 108 m² | 148 m² | +40 m² +37% | 2025 |
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| 3, Phoenix Road725 m away | 141 m² | 181 m² | +40 m² +28% | 2025 |
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| 1, Lennard Road848 m away | 94 m² | 134 m² | +40 m² +43% | 2024 |
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| 25, Clement Road861 m away | 82 m² | 122 m² | +40 m² +49% | 2023 |
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| 53, Stembridge Road981 m away | 106 m² | 146 m² | +40 m² +38% | 2020 |
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| 85, Ravenscroft Road504 m away | 91 m² | 130 m² | +39 m² +43% | 2024 |
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| 71, Kingswood Road764 m away | 88 m² | 127 m² | +39 m² +44% | 2022 |
|---|
| 26, Barnmead Road749 m away | 194 m² | 233 m² | +39 m² +20% | 2021 |
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| 285, Beckenham Road559 m away | 59 m² | 97 m² | +38 m² +64% | 2026 |
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| 134, Blandford Road711 m away | 110 m² | 148 m² | +38 m² +35% | 2023 |
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| Flat 61, Queen Adelaide Court, Queen Adelaide Road642 m away | 36 m² | 74 m² | +38 m² +106% | 2020 |
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| 181, High Street306 m away | 32 m² | 70 m² | +38 m² +119% | 2019 |
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| 174, Beckenham Road614 m away | 178 m² | 215 m² | +37 m² +21% | 2026 |
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| 130, Mackenzie Road619 m away | 95 m² | 132 m² | +37 m² +39% | 2026 |
|---|
| 2, Kendall Road981 m away | 125 m² | 162 m² | +37 m² +30% | 2024 |
|---|
| 88, Lennard Road840 m away | 204 m² | 241 m² | +37 m² +18% | 2023 |
|---|
| 37, Kenilworth Road259 m away | 85 m² | 122 m² | +37 m² +44% | 2022 |
|---|
| 25, Kingswood Road764 m away | 86 m² | 122 m² | +36 m² +42% | 2025 |
|---|
| 10, Crampton Road791 m away | 95 m² | 131 m² | +36 m² +38% | 2024 |
|---|
| 40, Barnmead Road749 m away | 164 m² | 200 m² | +36 m² +22% | 2023 |
|---|
| 76, Blandford Road762 m away | 86 m² | 122 m² | +36 m² +42% | 2021 |
|---|
| 1, Birkbeck Road602 m away | 45 m² | 81 m² | +36 m² +80% | 2018 |
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| 50, Allen Road792 m away | 90 m² | 125 m² | +35 m² +39% | 2025 |
|---|
| 129, Croydon Road657 m away | 227 m² | 262 m² | +35 m² +15% | 2024 |
|---|
| 73, Ravenscroft Road504 m away | 101 m² | 136 m² | +35 m² +35% | 2022 |
|---|
| 120, Elmers End Road786 m away | 106 m² | 141 m² | +35 m² +33% | 2022 |
|---|
| 7, Blandford Avenue820 m away | 84 m² | 119 m² | +35 m² +42% | 2017 |
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| 68, Oakfield Road554 m away | 88 m² | 123 m² | +35 m² +40% | 2014 |
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| 277, Beckenham Road559 m away | 103 m² | 138 m² | +35 m² +34% | 2014 |
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| 16, Elmers End Road592 m away | 124 m² | 158 m² | +34 m² +27% | 2026 |
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| 132, Birkbeck Road568 m away | 117 m² | 151 m² | +34 m² +29% | 2024 |
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| Inchbare, Maple Road525 m away | 34 m² | 68 m² | +34 m² +100% | 2023 |
|---|
| 55, Wordsworth Road492 m away | 89 m² | 123 m² | +34 m² +38% | 2021 |
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| 172, Birkbeck Road568 m away | 84 m² | 118 m² | +34 m² +40% | 2019 |
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| 119, Mackenzie Road651 m away | 110 m² | 144 m² | +34 m² +31% | 2018 |
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| 13, Stodart Road286 m away | 131 m² | 165 m² | +34 m² +26% | 2017 |
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| 17, Padua Road159 m away | 61 m² | 95 m² | +34 m² +56% | 2016 |
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| 16, Padua Road159 m away | 119 m² | 152 m² | +33 m² +28% | 2026 |
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| 27, Montrave Road622 m away | 135 m² | 168 m² | +33 m² +24% | 2024 |
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| 116, Blandford Road711 m away | 85 m² | 118 m² | +33 m² +39% | 2023 |
|---|
| 19, Eastwell Close811 m away | 90 m² | 123 m² | +33 m² +37% | 2021 |
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| 186, Maple Road380 m away | 53 m² | 86 m² | +33 m² +62% | 2020 |
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| 70, Anerley Park827 m away | 53 m² | 86 m² | +33 m² +62% | 2010 |
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| Flat 7, Park House, Anerley Park952 m away | 57 m² | 90 m² | +33 m² +58% | 2009 |
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| 38, Birkbeck Road568 m away | 99 m² | 131 m² | +32 m² +32% | 2026 |
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| 114, Anerley Park762 m away | 125 m² | 157 m² | +32 m² +26% | 2026 |
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| 28, Bourdon Road761 m away | 99 m² | 131 m² | +32 m² +32% | 2024 |
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| 58, Kingswood Road738 m away | 117 m² | 149 m² | +32 m² +27% | 2023 |
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| 29, Pelham Road654 m away | 102 m² | 134 m² | +32 m² +31% | 2022 |
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| 28, Oak Grove Road458 m away | 80 m² | 112 m² | +32 m² +40% | 2021 |
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| 5, Piquet Road833 m away | 118 m² | 150 m² | +32 m² +27% | 2018 |
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| 16, Blandford Road762 m away | 95 m² | 127 m² | +32 m² +34% | 2015 |
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| 62, Barnmead Road749 m away | 120 m² | 151 m² | +31 m² +26% | 2026 |
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| 31, Torr Road466 m away | 86 m² | 117 m² | +31 m² +36% | 2023 |
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| 50a, Croydon Road0 m away | 69 m² | 100 m² | +31 m² +45% | 2021 |
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| 40, Stodart Road286 m away | 103 m² | 134 m² | +31 m² +30% | 2019 |
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| 72a, Samos Road832 m away | 79 m² | 110 m² | +31 m² +39% | 2019 |
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| 49b, Anerley Park827 m away | 80 m² | 111 m² | +31 m² +39% | 2015 |
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| 30, Parish Lane737 m away | 42 m² | 73 m² | +31 m² +74% | 2010 |
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| 105, Seymour Villas845 m away | 62 m² | 92 m² | +30 m² +48% | 2026 |
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| 46, Blandford Road762 m away | 98 m² | 128 m² | +30 m² +31% | 2025 |
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| 41, Arrol Road907 m away | 75 m² | 105 m² | +30 m² +40% | 2022 |
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| 2, Lennard Terrace816 m away | 99 m² | 129 m² | +30 m² +30% | 2020 |
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| 15, Green Lane436 m away | 111 m² | 141 m² | +30 m² +27% | 2015 |
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| 13, Kings Hall Road718 m away | 168 m² | 197 m² | +29 m² +17% | 2024 |
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| 22a, Avington Grove480 m away | 35 m² | 64 m² | +29 m² +83% | 2022 |
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| 150, Beckenham Road614 m away | 178 m² | 207 m² | +29 m² +16% | 2021 |
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| 170, Birkbeck Road568 m away | 86 m² | 115 m² | +29 m² +34% | 2020 |
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| 49, Clevedon Road329 m away | 107 m² | 136 m² | +29 m² +27% | 2018 |
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| 109, Elmers End Road786 m away | 51 m² | 79 m² | +28 m² +55% | 2023 |
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| 50c, Thicket Road890 m away | 67 m² | 95 m² | +28 m² +42% | 2022 |
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| 265a, Beckenham Road559 m away | 74 m² | 102 m² | +28 m² +38% | 2021 |
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| 159b, Venner Road909 m away | 53 m² | 81 m² | +28 m² +53% | 2017 |
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| 28, Green Lane414 m away | 88 m² | 116 m² | +28 m² +32% | 2015 |
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| 123, Ravenscroft Road527 m away | 85 m² | 112 m² | +27 m² +32% | 2026 |
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| Flat 10, Queen Adelaide Court, Queen Adelaide Road625 m away | 45 m² | 72 m² | +27 m² +60% | 2025 |
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| 70, Wordsworth Road503 m away | 91 m² | 118 m² | +27 m² +30% | 2024 |
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| 4a, Tremaine Road867 m away | 53 m² | 80 m² | +27 m² +51% | 2023 |
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| 49b, Parish Lane760 m away | 41 m² | 68 m² | +27 m² +66% | 2022 |
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| 36, Somerville Road781 m away | 95 m² | 122 m² | +27 m² +28% | 2022 |
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| 26, Churchfields Road859 m away | 86 m² | 113 m² | +27 m² +31% | 2022 |
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| 50, Barnmead Road749 m away | 150 m² | 177 m² | +27 m² +18% | 2021 |
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| 105, Avenue Road520 m away | 71 m² | 98 m² | +27 m² +38% | 2020 |
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| 76, Ravenscroft Road464 m away | 114 m² | 141 m² | +27 m² +24% | 2017 |
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| 94, Ravenscroft Road464 m away | 113 m² | 140 m² | +27 m² +24% | 2017 |
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| 198b, Venner Road894 m away | 47 m² | 74 m² | +27 m² +57% | 2014 |
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| Flat 5, 101a, Parish Lane601 m away | 36 m² | 62 m² | +26 m² +72% | 2025 |
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| Flat 5, Parcell House, Newlands Park910 m away | 56 m² | 82 m² | +26 m² +46% | 2025 |
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| 34, Kings Hall Road660 m away | 114 m² | 140 m² | +26 m² +23% | 2023 |
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| 68, Lennard Road840 m away | 169 m² | 195 m² | +26 m² +15% | 2023 |
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| 23, Cottingham Road390 m away | 78 m² | 104 m² | +26 m² +33% | 2022 |
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| Flat 6, Strood House, Evelina Road232 m away | 19 m² | 45 m² | +26 m² +137% | 2020 |
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| 166, Birkbeck Road568 m away | 87 m² | 113 m² | +26 m² +30% | 2020 |
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| 2c, Hawthorn Grove488 m away | 96 m² | 122 m² | +26 m² +27% | 2014 |
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| 193, Birkbeck Road622 m away | 94 m² | 119 m² | +25 m² +27% | 2026 |
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| 14, Villiers Road777 m away | 73 m² | 98 m² | +25 m² +34% | 2024 |
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| 22, Green Lane436 m away | 42 m² | 67 m² | +25 m² +60% | 2020 |
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| 124, Blandford Road711 m away | 74 m² | 99 m² | +25 m² +34% | 2020 |
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| 29, Chesham Road404 m away | 55 m² | 80 m² | +25 m² +45% | 2019 |
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| 2, Crampton Road791 m away | 86 m² | 111 m² | +25 m² +29% | 2019 |
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| 8, Green Lane436 m away | 83 m² | 108 m² | +25 m² +30% | 2009 |
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| 24, Trenholme Road787 m away | 75 m² | 99 m² | +24 m² +32% | 2026 |
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| 76, Mackenzie Road613 m away | 86 m² | 110 m² | +24 m² +28% | 2025 |
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| 40, Kenilworth Road259 m away | 126 m² | 150 m² | +24 m² +19% | 2024 |
|---|
| 1, Seymour Terrace910 m away | 138 m² | 162 m² | +24 m² +17% | 2024 |
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| Flat 4, 180, Birkbeck Road568 m away | 49 m² | 73 m² | +24 m² +49% | 2022 |
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| 30, Birkbeck Road568 m away | 89 m² | 113 m² | +24 m² +27% | 2022 |
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| 27, Albert Road697 m away | 44 m² | 68 m² | +24 m² +55% | 2021 |
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| 18, Piquet Road849 m away | 106 m² | 130 m² | +24 m² +23% | 2018 |
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| Flat 5, 26, Chestnut Grove352 m away | 45 m² | 69 m² | +24 m² +53% | 2017 |
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| 25, Whateley Road685 m away | 90 m² | 113 m² | +23 m² +26% | 2026 |
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| 152, Maple Road285 m away | 52 m² | 75 m² | +23 m² +44% | 2025 |
|---|
| 30, Seymour Villas858 m away | 74 m² | 97 m² | +23 m² +31% | 2024 |
|---|
| 76, Birkbeck Road530 m away | 92 m² | 115 m² | +23 m² +25% | 2022 |
|---|
| 27, Ash Grove596 m away | 101 m² | 124 m² | +23 m² +23% | 2022 |
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| 12, Villiers Road777 m away | 74 m² | 97 m² | +23 m² +31% | 2022 |
|---|
| 25, Tennyson Road698 m away | 89 m² | 112 m² | +23 m² +26% | 2021 |
|---|
| 222, Venner Road894 m away | 118 m² | 141 m² | +23 m² +19% | 2021 |
|---|
| Flat 10, Golden Mews, 15, Howard Road82 m away | 71 m² | 94 m² | +23 m² +32% | 2018 |
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| Flat 4, 9, St Johns Road572 m away | 37 m² | 60 m² | +23 m² +62% | 2018 |
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| 58, Hawthorn Grove488 m away | 52 m² | 75 m² | +23 m² +44% | 2017 |
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| 20a, Ash Grove596 m away | 48 m² | 70 m² | +22 m² +46% | 2023 |
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| 4, Mackenzie Road653 m away | 103 m² | 125 m² | +22 m² +21% | 2023 |
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| 11, Trenholme Road787 m away | 87 m² | 109 m² | +22 m² +25% | 2023 |
|---|
| 20, Kimberley Road796 m away | 64 m² | 86 m² | +22 m² +34% | 2021 |
|---|
| 30, Blandford Avenue820 m away | 74 m² | 96 m² | +22 m² +30% | 2021 |
|---|
| 7a, Howard Road82 m away | 85 m² | 107 m² | +22 m² +26% | 2020 |
|---|
| 24a, Jasmine Grove545 m away | 31 m² | 53 m² | +22 m² +71% | 2020 |
|---|
| Flat 7, 56, Thicket Road890 m away | 41 m² | 63 m² | +22 m² +54% | 2020 |
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| 19, High Street721 m away | 78 m² | 100 m² | +22 m² +28% | 2019 |
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| 112b, Lennard Road938 m away | 90 m² | 112 m² | +22 m² +24% | 2019 |
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| Flat 6b, Ellesmere Court, Seymour Villas958 m away | 70 m² | 92 m² | +22 m² +31% | 2017 |
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| Flat 26, Roberts Court, Maple Road247 m away | 39 m² | 61 m² | +22 m² +56% | 2014 |
|---|
| Flat 15, Penceat Court, 17, Bourdon Road737 m away | 29 m² | 51 m² | +22 m² +76% | 2013 |
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| 14, Parkside Close444 m away | 60 m² | 81 m² | +21 m² +35% | 2025 |
|---|
| 8, Queen Adelaide Road569 m away | 85 m² | 106 m² | +21 m² +25% | 2024 |
|---|
| 34, Villiers Road777 m away | 87 m² | 108 m² | +21 m² +24% | 2024 |
|---|
| 35, Cottingham Road390 m away | 78 m² | 99 m² | +21 m² +27% | 2022 |
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