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 7QQ
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 Road627 m away | 246 m² | 387 m² | +141 m² +57% | 2012 |
| 41, Beck Lane937 m away | 89 m² | 220 m² | +131 m² +147% | 2023 |
| 130, Maple Road511 m away | 100 m² | 210 m² | +110 m² +110% | 2014 |
| 26, Avington Grove741 m away | 192 m² | 290 m² | +98 m² +51% | 2014 |
| 37, Kings Hall Road472 m away | 187 m² | 280 m² | +93 m² +50% | 2021 |
| 67, Kings Hall Road642 m away | 124 m² | 215 m² | +91 m² +73% | 2020 |
| 27, Clock House Road780 m away | 64 m² | 152 m² | +88 m² +138% | 2024 |
| 41, Elmers End Road735 m away | 116 m² | 201 m² | +85 m² +73% | 2025 |
| 136, Lennard Road862 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.
| 139 m² |
| 220 m² |
| +81 m² +58% |
| 2026 |
| 29, Maple Road634 m away | 76 m² | 157 m² | +81 m² +107% | 2018 |
|---|
| 194, Beckenham Road286 m away | 337 m² | 418 m² | +81 m² +24% | 2017 |
|---|
| 45, Cromwell Road979 m away | 135 m² | 213 m² | +78 m² +58% | 2023 |
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| 57, Hampden Avenue986 m away | 98 m² | 170 m² | +72 m² +73% | 2025 |
|---|
| 191, Ravenscroft Road459 m away | 63 m² | 135 m² | +72 m² +114% | 2021 |
|---|
| 98, Avenue Road355 m away | 72 m² | 143 m² | +71 m² +99% | 2025 |
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| 10, Alexandra Road955 m away | 129 m² | 200 m² | +71 m² +55% | 2025 |
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| 26, Ravenscroft Road170 m away | 89 m² | 157 m² | +68 m² +76% | 2025 |
|---|
| 115, Croydon Road853 m away | 261 m² | 329 m² | +68 m² +26% | 2017 |
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| 19, Chesham Crescent432 m away | 105 m² | 172 m² | +67 m² +64% | 2014 |
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| 45, Kingsdale Road260 m away | 64 m² | 128 m² | +64 m² +100% | 2020 |
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| 80, Ravenscroft Road170 m away | 102 m² | 164 m² | +62 m² +61% | 2020 |
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| 48, Barnmead Road429 m away | 117 m² | 179 m² | +62 m² +53% | 2020 |
|---|
| 50, Birkbeck Road252 m away | 106 m² | 166 m² | +60 m² +57% | 2025 |
|---|
| 152, Blandford Road451 m away | 83 m² | 143 m² | +60 m² +72% | 2021 |
|---|
| 35, Hampden Road994 m away | 73 m² | 133 m² | +60 m² +82% | 2018 |
|---|
| 295, Beckenham Road230 m away | 125 m² | 185 m² | +60 m² +48% | 2016 |
|---|
| 5a, Villiers Road570 m away | 92 m² | 151 m² | +59 m² +64% | 2019 |
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| 8, Alexandra Road955 m away | 137 m² | 195 m² | +58 m² +42% | 2020 |
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| 263, Kent House Road613 m away | 131 m² | 187 m² | +56 m² +43% | 2024 |
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| 90, Lennard Road782 m away | 204 m² | 260 m² | +56 m² +27% | 2018 |
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| 214, Kent House Road642 m away | 120 m² | 175 m² | +55 m² +46% | 2026 |
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| 34, Jasmine Grove863 m away | 150 m² | 204 m² | +54 m² +36% | 2024 |
|---|
| 6, Kenilworth Road71 m away | 104 m² | 158 m² | +54 m² +52% | 2020 |
|---|
| 7, Alexandra Road955 m away | 135 m² | 189 m² | +54 m² +40% | 2018 |
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| 29, Kingswood Road976 m away | 93 m² | 146 m² | +53 m² +57% | 2026 |
|---|
| 81, Mackenzie Road395 m away | 60 m² | 113 m² | +53 m² +88% | 2022 |
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| 260, Kent House Road642 m away | 113 m² | 166 m² | +53 m² +47% | 2016 |
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| 43, Chaffinch Road849 m away | 87 m² | 139 m² | +52 m² +60% | 2025 |
|---|
| 27, Phoenix Road893 m away | 126 m² | 178 m² | +52 m² +41% | 2024 |
|---|
| 43, Reddons Road634 m away | 181 m² | 233 m² | +52 m² +29% | 2021 |
|---|
| 5, Southey Street551 m away | 94 m² | 144 m² | +50 m² +53% | 2025 |
|---|
| 86, Barnmead Road288 m away | 97 m² | 146 m² | +49 m² +51% | 2022 |
|---|
| 106, Mackenzie Road351 m away | 76 m² | 125 m² | +49 m² +64% | 2016 |
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| 167, Ravenscroft Road459 m away | 97 m² | 145 m² | +48 m² +49% | 2026 |
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| 5, Kenilworth Road71 m away | 98 m² | 146 m² | +48 m² +49% | 2022 |
|---|
| 87, Chaffinch Road849 m away | 91 m² | 139 m² | +48 m² +53% | 2022 |
|---|
| 34, Pelham Road603 m away | 104 m² | 152 m² | +48 m² +46% | 2021 |
|---|
| 17, Villiers Road570 m away | 101 m² | 148 m² | +47 m² +47% | 2024 |
|---|
| 15, Whateley Road597 m away | 85 m² | 132 m² | +47 m² +55% | 2021 |
|---|
| 34, Hampden Road982 m away | 94 m² | 141 m² | +47 m² +50% | 2021 |
|---|
| 131, Parish Lane570 m away | 75 m² | 122 m² | +47 m² +63% | 2017 |
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| 31, Cromwell Road979 m away | 120 m² | 167 m² | +47 m² +39% | 2016 |
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| 91, Blandford Road479 m away | 72 m² | 118 m² | +46 m² +64% | 2026 |
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| 10a, Avington Grove741 m away | 58 m² | 104 m² | +46 m² +79% | 2025 |
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| 76, Kings Hall Road530 m away | 203 m² | 248 m² | +45 m² +22% | 2026 |
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| 386, Blandford Road744 m away | 71 m² | 116 m² | +45 m² +63% | 2022 |
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| 311, Blandford Road810 m away | 86 m² | 131 m² | +45 m² +52% | 2022 |
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| 32, Hampden Road982 m away | 95 m² | 139 m² | +44 m² +46% | 2022 |
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| 250, Blandford Road517 m away | 66 m² | 109 m² | +43 m² +65% | 2025 |
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| 37, Kingswood Road976 m away | 89 m² | 132 m² | +43 m² +48% | 2024 |
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| 29, Ash Grove665 m away | 85 m² | 128 m² | +43 m² +51% | 2022 |
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| 39, Queen Adelaide Road698 m away | 31 m² | 74 m² | +43 m² +139% | 2010 |
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| 155, Churchfields Road667 m away | 84 m² | 126 m² | +42 m² +50% | 2023 |
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| 116, Mackenzie Road460 m away | 104 m² | 146 m² | +42 m² +40% | 2022 |
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| 33, Kenilworth Road71 m away | 91 m² | 133 m² | +42 m² +46% | 2020 |
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| 18, Green Lane406 m away | 49 m² | 91 m² | +42 m² +86% | 2016 |
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| 65, Kendall Road712 m away | 82 m² | 123 m² | +41 m² +50% | 2026 |
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| 48, Chesham Road389 m away | 121 m² | 162 m² | +41 m² +34% | 2025 |
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| 235, Birkbeck Road717 m away | 64 m² | 105 m² | +41 m² +64% | 2025 |
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| 30, Felmingham Road933 m away | 72 m² | 113 m² | +41 m² +57% | 2023 |
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| 42, Clock House Road810 m away | 139 m² | 180 m² | +41 m² +29% | 2020 |
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| 11, Lennard Road860 m away | 72 m² | 113 m² | +41 m² +57% | 2014 |
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| 36, Pelham Road603 m away | 108 m² | 148 m² | +40 m² +37% | 2025 |
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| 3, Phoenix Road893 m away | 141 m² | 181 m² | +40 m² +28% | 2025 |
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| 1, Lennard Road922 m away | 94 m² | 134 m² | +40 m² +43% | 2024 |
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| 25, Clement Road674 m away | 82 m² | 122 m² | +40 m² +49% | 2023 |
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| 84, Clock House Road871 m away | 123 m² | 162 m² | +39 m² +32% | 2026 |
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| 171, Kings Hall Road976 m away | 154 m² | 193 m² | +39 m² +25% | 2025 |
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| 85, Ravenscroft Road204 m away | 91 m² | 130 m² | +39 m² +43% | 2024 |
|---|
| 71, Kingswood Road976 m away | 88 m² | 127 m² | +39 m² +44% | 2022 |
|---|
| 26, Barnmead Road429 m away | 194 m² | 233 m² | +39 m² +20% | 2021 |
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| 285, Beckenham Road230 m away | 59 m² | 97 m² | +38 m² +64% | 2026 |
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| 134, Blandford Road451 m away | 110 m² | 148 m² | +38 m² +35% | 2023 |
|---|
| Flat 61, Queen Adelaide Court, Queen Adelaide Road761 m away | 36 m² | 74 m² | +38 m² +106% | 2020 |
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| 181, High Street253 m away | 32 m² | 70 m² | +38 m² +119% | 2019 |
|---|
| 174, Beckenham Road286 m away | 178 m² | 215 m² | +37 m² +21% | 2026 |
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| 130, Mackenzie Road460 m away | 95 m² | 132 m² | +37 m² +39% | 2026 |
|---|
| 2, Kendall Road686 m away | 125 m² | 162 m² | +37 m² +30% | 2024 |
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| 88, Lennard Road782 m away | 204 m² | 241 m² | +37 m² +18% | 2023 |
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| 37, Kenilworth Road71 m away | 85 m² | 122 m² | +37 m² +44% | 2022 |
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| 25, Kingswood Road976 m away | 86 m² | 122 m² | +36 m² +42% | 2025 |
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| 40, Barnmead Road429 m away | 164 m² | 200 m² | +36 m² +22% | 2023 |
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| 76, Blandford Road448 m away | 86 m² | 122 m² | +36 m² +42% | 2021 |
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| 49, Hampden Road994 m away | 93 m² | 129 m² | +36 m² +39% | 2019 |
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| 1, Birkbeck Road287 m away | 45 m² | 81 m² | +36 m² +80% | 2018 |
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| 50, Allen Road656 m away | 90 m² | 125 m² | +35 m² +39% | 2025 |
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| 129, Croydon Road853 m away | 227 m² | 262 m² | +35 m² +15% | 2024 |
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| 73, Ravenscroft Road204 m away | 101 m² | 136 m² | +35 m² +35% | 2022 |
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| 120, Elmers End Road816 m away | 106 m² | 141 m² | +35 m² +33% | 2022 |
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| 7, Blandford Avenue518 m away | 84 m² | 119 m² | +35 m² +42% | 2017 |
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| 277, Beckenham Road230 m away | 103 m² | 138 m² | +35 m² +34% | 2014 |
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| 68, Oakfield Road882 m away | 88 m² | 123 m² | +35 m² +40% | 2014 |
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| 16, Elmers End Road736 m away | 124 m² | 158 m² | +34 m² +27% | 2026 |
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| 132, Birkbeck Road478 m away | 117 m² | 151 m² | +34 m² +29% | 2024 |
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| Inchbare, Maple Road802 m away | 34 m² | 68 m² | +34 m² +100% | 2023 |
|---|
| 55, Wordsworth Road537 m away | 89 m² | 123 m² | +34 m² +38% | 2021 |
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| 18, Hampden Avenue999 m away | 100 m² | 134 m² | +34 m² +34% | 2020 |
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| 172, Birkbeck Road478 m away | 84 m² | 118 m² | +34 m² +40% | 2019 |
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| 119, Mackenzie Road479 m away | 110 m² | 144 m² | +34 m² +31% | 2018 |
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| 13, Stodart Road557 m away | 131 m² | 165 m² | +34 m² +26% | 2017 |
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| 17, Padua Road469 m away | 61 m² | 95 m² | +34 m² +56% | 2016 |
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| 16, Padua Road469 m away | 119 m² | 152 m² | +33 m² +28% | 2026 |
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| 27, Montrave Road818 m away | 135 m² | 168 m² | +33 m² +24% | 2024 |
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| 116, Blandford Road451 m away | 85 m² | 118 m² | +33 m² +39% | 2023 |
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| 19, Eastwell Close526 m away | 90 m² | 123 m² | +33 m² +37% | 2021 |
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| 186, Maple Road556 m away | 53 m² | 86 m² | +33 m² +62% | 2020 |
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| 38, Birkbeck Road252 m away | 99 m² | 131 m² | +32 m² +32% | 2026 |
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| 63, Chaffinch Road849 m away | 90 m² | 122 m² | +32 m² +36% | 2025 |
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| 28, Bourdon Road875 m away | 99 m² | 131 m² | +32 m² +32% | 2024 |
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| 58, Kingswood Road945 m away | 117 m² | 149 m² | +32 m² +27% | 2023 |
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| 29, Pelham Road639 m away | 102 m² | 134 m² | +32 m² +31% | 2022 |
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| 130, Lennard Road862 m away | 68 m² | 100 m² | +32 m² +47% | 2022 |
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| 28, Oak Grove Road599 m away | 80 m² | 112 m² | +32 m² +40% | 2021 |
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| 5, Piquet Road867 m away | 118 m² | 150 m² | +32 m² +27% | 2018 |
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| 16, Blandford Road448 m away | 95 m² | 127 m² | +32 m² +34% | 2015 |
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| 62, Barnmead Road429 m away | 120 m² | 151 m² | +31 m² +26% | 2026 |
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| 31, Torr Road358 m away | 86 m² | 117 m² | +31 m² +36% | 2023 |
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| 50a, Croydon Road329 m away | 69 m² | 100 m² | +31 m² +45% | 2021 |
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| 40, Stodart Road557 m away | 103 m² | 134 m² | +31 m² +30% | 2019 |
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| Flat 7, Clock House Court, Clock House Road804 m away | 39 m² | 70 m² | +31 m² +79% | 2019 |
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| 72a, Samos Road950 m away | 79 m² | 110 m² | +31 m² +39% | 2019 |
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| 30, Parish Lane814 m away | 42 m² | 73 m² | +31 m² +74% | 2010 |
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| 22, Hampden Avenue999 m away | 103 m² | 133 m² | +30 m² +29% | 2026 |
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| 46, Blandford Road448 m away | 98 m² | 128 m² | +30 m² +31% | 2025 |
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| 41, Arrol Road827 m away | 75 m² | 105 m² | +30 m² +40% | 2022 |
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| 2, Lennard Terrace906 m away | 99 m² | 129 m² | +30 m² +30% | 2020 |
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| 60, Rowden Road821 m away | 106 m² | 136 m² | +30 m² +28% | 2018 |
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| 15, Green Lane406 m away | 111 m² | 141 m² | +30 m² +27% | 2015 |
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| 13, Kings Hall Road472 m away | 168 m² | 197 m² | +29 m² +17% | 2024 |
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| 22a, Avington Grove741 m away | 35 m² | 64 m² | +29 m² +83% | 2022 |
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| 150, Beckenham Road286 m away | 178 m² | 207 m² | +29 m² +16% | 2021 |
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| 170, Birkbeck Road478 m away | 86 m² | 115 m² | +29 m² +34% | 2020 |
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| 49, Clevedon Road0 m away | 107 m² | 136 m² | +29 m² +27% | 2018 |
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| 109, Elmers End Road795 m away | 51 m² | 79 m² | +28 m² +55% | 2023 |
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| 265a, Beckenham Road230 m away | 74 m² | 102 m² | +28 m² +38% | 2021 |
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| 27, Hampden Road994 m away | 93 m² | 121 m² | +28 m² +30% | 2019 |
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| 28, Green Lane370 m away | 88 m² | 116 m² | +28 m² +32% | 2015 |
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| 123, Ravenscroft Road459 m away | 85 m² | 112 m² | +27 m² +32% | 2026 |
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| Flat 10, Queen Adelaide Court, Queen Adelaide Road722 m away | 45 m² | 72 m² | +27 m² +60% | 2025 |
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| 70, Wordsworth Road513 m away | 91 m² | 118 m² | +27 m² +30% | 2024 |
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| 26, Churchfields Road538 m away | 86 m² | 113 m² | +27 m² +31% | 2022 |
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| 36, Somerville Road679 m away | 95 m² | 122 m² | +27 m² +28% | 2022 |
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| 49b, Parish Lane822 m away | 41 m² | 68 m² | +27 m² +66% | 2022 |
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| 50, Barnmead Road429 m away | 150 m² | 177 m² | +27 m² +18% | 2021 |
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| 105, Avenue Road320 m away | 71 m² | 98 m² | +27 m² +38% | 2020 |
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| 87, Clock House Road841 m away | 124 m² | 151 m² | +27 m² +22% | 2019 |
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| 76, Ravenscroft Road170 m away | 114 m² | 141 m² | +27 m² +24% | 2017 |
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| 94, Ravenscroft Road170 m away | 113 m² | 140 m² | +27 m² +24% | 2017 |
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| Flat 5, 101a, Parish Lane434 m away | 36 m² | 62 m² | +26 m² +72% | 2025 |
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| 34, Kings Hall Road416 m away | 114 m² | 140 m² | +26 m² +23% | 2023 |
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| 68, Lennard Road782 m away | 169 m² | 195 m² | +26 m² +15% | 2023 |
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| 23, Cottingham Road321 m away | 78 m² | 104 m² | +26 m² +33% | 2022 |
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| Flat 6, Strood House, Evelina Road404 m away | 19 m² | 45 m² | +26 m² +137% | 2020 |
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| 166, Birkbeck Road478 m away | 87 m² | 113 m² | +26 m² +30% | 2020 |
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| 2c, Hawthorn Grove815 m away | 96 m² | 122 m² | +26 m² +27% | 2014 |
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| 193, Birkbeck Road544 m away | 94 m² | 119 m² | +25 m² +27% | 2026 |
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| 14, Villiers Road570 m away | 73 m² | 98 m² | +25 m² +34% | 2024 |
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| 4, Hampden Road982 m away | 131 m² | 156 m² | +25 m² +19% | 2023 |
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| 22, Green Lane406 m away | 42 m² | 67 m² | +25 m² +60% | 2020 |
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| 124, Blandford Road451 m away | 74 m² | 99 m² | +25 m² +34% | 2020 |
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| 29, Chesham Road389 m away | 55 m² | 80 m² | +25 m² +45% | 2019 |
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| 8, Green Lane406 m away | 83 m² | 108 m² | +25 m² +30% | 2009 |
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| 76, Mackenzie Road351 m away | 86 m² | 110 m² | +24 m² +28% | 2025 |
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| 40, Kenilworth Road71 m away | 126 m² | 150 m² | +24 m² +19% | 2024 |
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| 59, Cromwell Road979 m away | 82 m² | 106 m² | +24 m² +29% | 2023 |
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| 30, Birkbeck Road252 m away | 89 m² | 113 m² | +24 m² +27% | 2022 |
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| Flat 4, 180, Birkbeck Road478 m away | 49 m² | 73 m² | +24 m² +49% | 2022 |
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| 27, Albert Road728 m away | 44 m² | 68 m² | +24 m² +55% | 2021 |
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| 19, Chaffinch Road696 m away | 93 m² | 117 m² | +24 m² +26% | 2018 |
|---|
| 18, Piquet Road893 m away | 106 m² | 130 m² | +24 m² +23% | 2018 |
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| Flat 5, 26, Chestnut Grove680 m away | 45 m² | 69 m² | +24 m² +53% | 2017 |
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| 25, Whateley Road597 m away | 90 m² | 113 m² | +23 m² +26% | 2026 |
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| 152, Maple Road511 m away | 52 m² | 75 m² | +23 m² +44% | 2025 |
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| 76, Birkbeck Road275 m away | 92 m² | 115 m² | +23 m² +25% | 2022 |
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| 12, Villiers Road570 m away | 74 m² | 97 m² | +23 m² +31% | 2022 |
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| 27, Ash Grove665 m away | 101 m² | 124 m² | +23 m² +23% | 2022 |
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| 25, Tennyson Road628 m away | 89 m² | 112 m² | +23 m² +26% | 2021 |
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| Flat 10, Golden Mews, 15, Howard Road410 m away | 71 m² | 94 m² | +23 m² +32% | 2018 |
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| Flat 4, 9, St Johns Road764 m away | 37 m² | 60 m² | +23 m² +62% | 2018 |
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| 58, Hawthorn Grove815 m away | 52 m² | 75 m² | +23 m² +44% | 2017 |
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| 4, Mackenzie Road337 m away | 103 m² | 125 m² | +22 m² +21% | 2023 |
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| 20a, Ash Grove665 m away | 48 m² | 70 m² | +22 m² +46% | 2023 |
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| 30, Blandford Avenue518 m away | 74 m² | 96 m² | +22 m² +30% | 2021 |
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| 20, Kimberley Road558 m away | 64 m² | 86 m² | +22 m² +34% | 2021 |
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| 7a, Howard Road410 m away | 85 m² | 107 m² | +22 m² +26% | 2020 |
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| 24a, Jasmine Grove863 m away | 31 m² | 53 m² | +22 m² +71% | 2020 |
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| 112b, Lennard Road833 m away | 90 m² | 112 m² | +22 m² +24% | 2019 |
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| 19, High Street968 m away | 78 m² | 100 m² | +22 m² +28% | 2019 |
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| Flat 26, Roberts Court, Maple Road562 m away | 39 m² | 61 m² | +22 m² +56% | 2014 |
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| Flat 15, Penceat Court, 17, Bourdon Road840 m away | 29 m² | 51 m² | +22 m² +76% | 2013 |
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