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 7HB
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 |
|---|---|---|---|---|
| 32, Crystal Palace Park Road779 m away | 139 m² | 300 m² | +161 m² +116% | 2019 |
| 18, Reddons Road882 m away | 246 m² | 387 m² | +141 m² +57% | 2012 |
| 130, Maple Road195 m away | 100 m² | 210 m² | +110 m² +110% | 2014 |
| 88, Venner Road694 m away | 340 m² | 448 m² | +108 m² +32% | 2017 |
| 26, Avington Grove138 m away | 192 m² | 290 m² | +98 m² +51% | 2014 |
| 37, Kings Hall Road819 m away | 187 m² | 280 m² | +93 m² +50% | 2021 |
| 29, Wiverton Road565 m away | 110 m² | 197 m² | +87 m² +79% | 2024 |
| 136, Lennard Road914 m away | 139 m² | 220 m² | +81 m² +58% | 2026 |
| 29, Maple Road587 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.
| 76 m² |
| 157 m² |
| +81 m² +107% |
| 2018 |
| 194, Beckenham Road916 m away | 337 m² | 418 m² | +81 m² +24% | 2017 |
|---|
| 10, Alexandra Road569 m away | 129 m² | 200 m² | +71 m² +55% | 2025 |
|---|
| 98, Avenue Road991 m away | 72 m² | 143 m² | +71 m² +99% | 2025 |
|---|
| 59, Anerley Park410 m away | 140 m² | 211 m² | +71 m² +51% | 2024 |
|---|
| 26, Ravenscroft Road858 m away | 89 m² | 157 m² | +68 m² +76% | 2025 |
|---|
| 43, Homecroft Road984 m away | 66 m² | 133 m² | +67 m² +102% | 2024 |
|---|
| 34, Crystal Palace Park Road779 m away | 216 m² | 283 m² | +67 m² +31% | 2022 |
|---|
| 19, Chesham Crescent837 m away | 105 m² | 172 m² | +67 m² +64% | 2014 |
|---|
| 45, Kingsdale Road524 m away | 64 m² | 128 m² | +64 m² +100% | 2020 |
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| 15, Tredown Road869 m away | 128 m² | 191 m² | +63 m² +49% | 2014 |
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| 80, Ravenscroft Road858 m away | 102 m² | 164 m² | +62 m² +61% | 2020 |
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| 48, Barnmead Road990 m away | 117 m² | 179 m² | +62 m² +53% | 2020 |
|---|
| 50, Birkbeck Road935 m away | 106 m² | 166 m² | +60 m² +57% | 2025 |
|---|
| 295, Beckenham Road879 m away | 125 m² | 185 m² | +60 m² +48% | 2016 |
|---|
| 8, Alexandra Road569 m away | 137 m² | 195 m² | +58 m² +42% | 2020 |
|---|
| 263, Kent House Road742 m away | 131 m² | 187 m² | +56 m² +43% | 2024 |
|---|
| 68a, Newlands Park843 m away | 96 m² | 152 m² | +56 m² +58% | 2023 |
|---|
| 90, Lennard Road621 m away | 204 m² | 260 m² | +56 m² +27% | 2018 |
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| 214, Kent House Road708 m away | 120 m² | 175 m² | +55 m² +46% | 2026 |
|---|
| 1, Sydenham Avenue974 m away | 106 m² | 161 m² | +55 m² +52% | 2019 |
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| 34, Jasmine Grove682 m away | 150 m² | 204 m² | +54 m² +36% | 2024 |
|---|
| 6, Kenilworth Road627 m away | 104 m² | 158 m² | +54 m² +52% | 2020 |
|---|
| 7, Alexandra Road569 m away | 135 m² | 189 m² | +54 m² +40% | 2018 |
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| 29, Kingswood Road291 m away | 93 m² | 146 m² | +53 m² +57% | 2026 |
|---|
| 260, Kent House Road708 m away | 113 m² | 166 m² | +53 m² +47% | 2016 |
|---|
| 27, Phoenix Road252 m away | 126 m² | 178 m² | +52 m² +41% | 2024 |
|---|
| 194, Venner Road428 m away | 127 m² | 179 m² | +52 m² +41% | 2024 |
|---|
| 43, Reddons Road837 m away | 181 m² | 233 m² | +52 m² +29% | 2021 |
|---|
| 11, Cator Road758 m away | 265 m² | 317 m² | +52 m² +20% | 2016 |
|---|
| 69, Homecroft Road984 m away | 106 m² | 158 m² | +52 m² +49% | 2014 |
|---|
| 5, Southey Street245 m away | 94 m² | 144 m² | +50 m² +53% | 2025 |
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| 61, Homecroft Road984 m away | 105 m² | 155 m² | +50 m² +48% | 2022 |
|---|
| 43b, Wiverton Road565 m away | 63 m² | 113 m² | +50 m² +79% | 2014 |
|---|
| 86, Barnmead Road801 m away | 97 m² | 146 m² | +49 m² +51% | 2022 |
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| 140, Kent House Road944 m away | 139 m² | 187 m² | +48 m² +35% | 2023 |
|---|
| 5, Kenilworth Road627 m away | 98 m² | 146 m² | +48 m² +49% | 2022 |
|---|
| 15, Whateley Road567 m away | 85 m² | 132 m² | +47 m² +55% | 2021 |
|---|
| 131, Parish Lane425 m away | 75 m² | 122 m² | +47 m² +63% | 2017 |
|---|
| 10a, Avington Grove138 m away | 58 m² | 104 m² | +46 m² +79% | 2025 |
|---|
| 14, Lawrie Park Crescent853 m away | 177 m² | 223 m² | +46 m² +26% | 2022 |
|---|
| 37, Kingswood Road291 m away | 89 m² | 132 m² | +43 m² +48% | 2024 |
|---|
| 96a, Byne Road745 m away | 72 m² | 115 m² | +43 m² +60% | 2021 |
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| 39, Queen Adelaide Road179 m away | 31 m² | 74 m² | +43 m² +139% | 2010 |
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| 4, Studland Road736 m away | 139 m² | 181 m² | +42 m² +30% | 2025 |
|---|
| 33, Kenilworth Road627 m away | 91 m² | 133 m² | +42 m² +46% | 2020 |
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| 18, Green Lane412 m away | 49 m² | 91 m² | +42 m² +86% | 2016 |
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| 95, Wiverton Road732 m away | 134 m² | 176 m² | +42 m² +31% | 2015 |
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| 48, Chesham Road883 m away | 121 m² | 162 m² | +41 m² +34% | 2025 |
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| 99, Wiverton Road732 m away | 90 m² | 131 m² | +41 m² +46% | 2017 |
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| 11, Lennard Road434 m away | 72 m² | 113 m² | +41 m² +57% | 2014 |
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| 3, Phoenix Road252 m away | 141 m² | 181 m² | +40 m² +28% | 2025 |
|---|
| 1, Lennard Road448 m away | 94 m² | 134 m² | +40 m² +43% | 2024 |
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| 137, Newlands Park918 m away | 111 m² | 151 m² | +40 m² +36% | 2015 |
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| 30, Avington Grove138 m away | 86 m² | 126 m² | +40 m² +47% | 2014 |
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| Flat 4, 11, Thicket Road940 m away | 35 m² | 75 m² | +40 m² +114% | 2012 |
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| Ground Floor Shop, 125, Anerley Road895 m away | 42 m² | 82 m² | +40 m² +95% | 2010 |
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| 85, Ravenscroft Road892 m away | 91 m² | 130 m² | +39 m² +43% | 2024 |
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| 71, Kingswood Road291 m away | 88 m² | 127 m² | +39 m² +44% | 2022 |
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| 26, Barnmead Road990 m away | 194 m² | 233 m² | +39 m² +20% | 2021 |
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| 285, Beckenham Road879 m away | 59 m² | 97 m² | +38 m² +64% | 2026 |
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| Flat 61, Queen Adelaide Court, Queen Adelaide Road234 m away | 36 m² | 74 m² | +38 m² +106% | 2020 |
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| 181, High Street466 m away | 32 m² | 70 m² | +38 m² +119% | 2019 |
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| 5, Border Road907 m away | 94 m² | 132 m² | +38 m² +40% | 2018 |
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| Flat 2, 87, Anerley Road996 m away | 63 m² | 101 m² | +38 m² +60% | 2017 |
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| 174, Beckenham Road916 m away | 178 m² | 215 m² | +37 m² +21% | 2026 |
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| 88, Lennard Road621 m away | 204 m² | 241 m² | +37 m² +18% | 2023 |
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| 37, Kenilworth Road627 m away | 85 m² | 122 m² | +37 m² +44% | 2022 |
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| 25, Kingswood Road291 m away | 86 m² | 122 m² | +36 m² +42% | 2025 |
|---|
| 10, Crampton Road327 m away | 95 m² | 131 m² | +36 m² +38% | 2024 |
|---|
| 40, Barnmead Road990 m away | 164 m² | 200 m² | +36 m² +22% | 2023 |
|---|
| 19, Wiverton Road565 m away | 129 m² | 165 m² | +36 m² +28% | 2010 |
|---|
| 73, Ravenscroft Road892 m away | 101 m² | 136 m² | +35 m² +35% | 2022 |
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| 7, Homecroft Road984 m away | 128 m² | 163 m² | +35 m² +27% | 2015 |
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| 68, Oakfield Road528 m away | 88 m² | 123 m² | +35 m² +40% | 2014 |
|---|
| 277, Beckenham Road879 m away | 103 m² | 138 m² | +35 m² +34% | 2014 |
|---|
| Inchbare, Maple Road800 m away | 34 m² | 68 m² | +34 m² +100% | 2023 |
|---|
| 55, Wordsworth Road306 m away | 89 m² | 123 m² | +34 m² +38% | 2021 |
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| 13, Stodart Road651 m away | 131 m² | 165 m² | +34 m² +26% | 2017 |
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| 17, Padua Road527 m away | 61 m² | 95 m² | +34 m² +56% | 2016 |
|---|
| Flat 2, 10, Thicket Road871 m away | 39 m² | 73 m² | +34 m² +87% | 2016 |
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| 70, Anerley Park635 m away | 52 m² | 86 m² | +34 m² +65% | 2010 |
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| 16, Padua Road527 m away | 119 m² | 152 m² | +33 m² +28% | 2026 |
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| 27, Montrave Road142 m away | 135 m² | 168 m² | +33 m² +24% | 2024 |
|---|
| 19, Eastwell Close956 m away | 90 m² | 123 m² | +33 m² +37% | 2021 |
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| 186, Maple Road136 m away | 53 m² | 86 m² | +33 m² +62% | 2020 |
|---|
| 5, Beckett Walk992 m away | 47 m² | 80 m² | +33 m² +70% | 2013 |
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| Flat 7, Park House, Anerley Park883 m away | 57 m² | 90 m² | +33 m² +58% | 2009 |
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| 114, Anerley Park410 m away | 125 m² | 157 m² | +32 m² +26% | 2026 |
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| 38, Birkbeck Road935 m away | 99 m² | 131 m² | +32 m² +32% | 2026 |
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| 58, Kingswood Road262 m away | 117 m² | 149 m² | +32 m² +27% | 2023 |
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| 130, Lennard Road914 m away | 68 m² | 100 m² | +32 m² +47% | 2022 |
|---|
| 28, Oak Grove Road899 m away | 80 m² | 112 m² | +32 m² +40% | 2021 |
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| 62, Barnmead Road990 m away | 120 m² | 151 m² | +31 m² +26% | 2026 |
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| 1, Wiverton Road565 m away | 129 m² | 160 m² | +31 m² +24% | 2025 |
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| 31, Torr Road511 m away | 86 m² | 117 m² | +31 m² +36% | 2023 |
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| Ground Floor, 44, Wiverton Road571 m away | 53 m² | 84 m² | +31 m² +58% | 2022 |
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| 50a, Croydon Road479 m away | 69 m² | 100 m² | +31 m² +45% | 2021 |
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| 40, Stodart Road651 m away | 103 m² | 134 m² | +31 m² +30% | 2019 |
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| 1, Birkbeck Road969 m away | 50 m² | 81 m² | +31 m² +62% | 2018 |
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| Flat 4, 47, Newlands Park562 m away | 32 m² | 63 m² | +31 m² +97% | 2016 |
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| 49b, Anerley Park635 m away | 80 m² | 111 m² | +31 m² +39% | 2015 |
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| 30, Parish Lane358 m away | 42 m² | 73 m² | +31 m² +74% | 2010 |
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| 2, Lennard Terrace403 m away | 99 m² | 129 m² | +30 m² +30% | 2020 |
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| 15, Green Lane412 m away | 111 m² | 141 m² | +30 m² +27% | 2015 |
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| 13, Kings Hall Road819 m away | 168 m² | 197 m² | +29 m² +17% | 2024 |
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| 22a, Avington Grove138 m away | 35 m² | 64 m² | +29 m² +83% | 2022 |
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| 150, Beckenham Road916 m away | 178 m² | 207 m² | +29 m² +16% | 2021 |
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| 49, Clevedon Road688 m away | 107 m² | 136 m² | +29 m² +27% | 2018 |
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| 50c, Thicket Road567 m away | 67 m² | 95 m² | +28 m² +42% | 2022 |
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| 35a, Tredown Road869 m away | 37 m² | 65 m² | +28 m² +76% | 2021 |
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| 265a, Beckenham Road879 m away | 74 m² | 102 m² | +28 m² +38% | 2021 |
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| Flat 3, Aintree House, Park Court610 m away | 46 m² | 74 m² | +28 m² +61% | 2019 |
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| Flat 9, Coniston Court, Springfield Road667 m away | 45 m² | 73 m² | +28 m² +62% | 2018 |
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| 159b, Venner Road453 m away | 53 m² | 81 m² | +28 m² +53% | 2017 |
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| 28, Green Lane431 m away | 88 m² | 116 m² | +28 m² +32% | 2015 |
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| Flat 10, Queen Adelaide Court, Queen Adelaide Road258 m away | 45 m² | 72 m² | +27 m² +60% | 2025 |
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| 70, Wordsworth Road359 m away | 91 m² | 118 m² | +27 m² +30% | 2024 |
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| 49b, Parish Lane395 m away | 41 m² | 68 m² | +27 m² +66% | 2022 |
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| 36, Somerville Road646 m away | 95 m² | 122 m² | +27 m² +28% | 2022 |
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| 50, Barnmead Road990 m away | 150 m² | 177 m² | +27 m² +18% | 2021 |
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| 105, Avenue Road969 m away | 71 m² | 98 m² | +27 m² +38% | 2020 |
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| 76, Ravenscroft Road858 m away | 114 m² | 141 m² | +27 m² +24% | 2017 |
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| 94, Ravenscroft Road858 m away | 113 m² | 140 m² | +27 m² +24% | 2017 |
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| 198b, Venner Road428 m away | 47 m² | 74 m² | +27 m² +57% | 2014 |
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| Flat 5, Parcell House, Newlands Park474 m away | 56 m² | 82 m² | +26 m² +46% | 2025 |
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| Flat 5, 101a, Parish Lane635 m away | 36 m² | 62 m² | +26 m² +72% | 2025 |
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| 68, Lennard Road621 m away | 169 m² | 195 m² | +26 m² +15% | 2023 |
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| 34, Kings Hall Road775 m away | 114 m² | 140 m² | +26 m² +23% | 2023 |
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| 23, Cottingham Road463 m away | 78 m² | 104 m² | +26 m² +33% | 2022 |
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| Flat 6, Strood House, Evelina Road286 m away | 19 m² | 45 m² | +26 m² +137% | 2020 |
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| 2c, Hawthorn Grove559 m away | 96 m² | 122 m² | +26 m² +27% | 2014 |
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| 22, Green Lane412 m away | 42 m² | 67 m² | +25 m² +60% | 2020 |
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| 29, Chesham Road883 m away | 55 m² | 80 m² | +25 m² +45% | 2019 |
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| 8, Green Lane412 m away | 83 m² | 108 m² | +25 m² +30% | 2009 |
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| 24, Trenholme Road606 m away | 75 m² | 99 m² | +24 m² +32% | 2026 |
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| 40, Kenilworth Road627 m away | 126 m² | 150 m² | +24 m² +19% | 2024 |
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| 30, Birkbeck Road935 m away | 89 m² | 113 m² | +24 m² +27% | 2022 |
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| 27, Albert Road400 m away | 44 m² | 68 m² | +24 m² +55% | 2021 |
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| 1, Border Road907 m away | 136 m² | 160 m² | +24 m² +18% | 2021 |
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| Flat 8, Wicklow Court, 45, Lawrie Park Road861 m away | 45 m² | 69 m² | +24 m² +53% | 2018 |
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| Flat 5, 26, Chestnut Grove433 m away | 45 m² | 69 m² | +24 m² +53% | 2017 |
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| 93, Tannsfeld Road890 m away | 91 m² | 115 m² | +24 m² +26% | 2015 |
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| 25, Whateley Road567 m away | 90 m² | 113 m² | +23 m² +26% | 2026 |
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| 152, Maple Road195 m away | 52 m² | 75 m² | +23 m² +44% | 2025 |
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| 76, Birkbeck Road953 m away | 92 m² | 115 m² | +23 m² +25% | 2022 |
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| 222, Venner Road428 m away | 118 m² | 141 m² | +23 m² +19% | 2021 |
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| 25, Tennyson Road547 m away | 89 m² | 112 m² | +23 m² +26% | 2021 |
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| Flat 4, 9, St Johns Road95 m away | 37 m² | 60 m² | +23 m² +62% | 2018 |
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| Flat 10, Golden Mews, 15, Howard Road438 m away | 71 m² | 94 m² | +23 m² +32% | 2018 |
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| 58, Hawthorn Grove559 m away | 52 m² | 75 m² | +23 m² +44% | 2017 |
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| 61, Venner Road668 m away | 55 m² | 78 m² | +23 m² +42% | 2010 |
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| Flat 21, The Firs, 43, Venner Road900 m away | 91 m² | 113 m² | +22 m² +24% | 2025 |
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| 11, Trenholme Road606 m away | 87 m² | 109 m² | +22 m² +25% | 2023 |
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| 7a, Howard Road438 m away | 85 m² | 107 m² | +22 m² +26% | 2020 |
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| Flat 7, 56, Thicket Road567 m away | 41 m² | 63 m² | +22 m² +54% | 2020 |
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| 24a, Jasmine Grove682 m away | 31 m² | 53 m² | +22 m² +71% | 2020 |
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| 19, High Street288 m away | 78 m² | 100 m² | +22 m² +28% | 2019 |
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| 112b, Lennard Road763 m away | 90 m² | 112 m² | +22 m² +24% | 2019 |
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| Flat 2, 11, Thicket Road940 m away | 35 m² | 57 m² | +22 m² +63% | 2019 |
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| 3, Tennyson Road547 m away | 49 m² | 71 m² | +22 m² +45% | 2016 |
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| Flat 26, Roberts Court, Maple Road541 m away | 39 m² | 61 m² | +22 m² +56% | 2014 |
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| 88, Tannsfeld Road880 m away | 121 m² | 143 m² | +22 m² +18% | 2011 |
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| 14, Parkside Close35 m away | 60 m² | 81 m² | +21 m² +35% | 2025 |
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| 8, Queen Adelaide Road179 m away | 85 m² | 106 m² | +21 m² +25% | 2024 |
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| 74, Wiverton Road758 m away | 129 m² | 150 m² | +21 m² +16% | 2024 |
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| 35, Cottingham Road463 m away | 78 m² | 99 m² | +21 m² +27% | 2022 |
|---|
| 152, Ravenscroft Road974 m away | 66 m² | 87 m² | +21 m² +32% | 2022 |
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| 198a, Venner Road428 m away | 66 m² | 87 m² | +21 m² +32% | 2020 |
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| 45b, Royston Road798 m away | 67 m² | 88 m² | +21 m² +31% | 2020 |
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| Flat 4, 19, Thicket Road940 m away | 30 m² | 51 m² | +21 m² +70% | 2019 |
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| 115, Newlands Park918 m away | 69 m² | 90 m² | +21 m² +30% | 2018 |
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| 10, Graveney Grove346 m away | 82 m² | 103 m² | +21 m² +26% | 2014 |
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| Flat 49, Deverill Court, Avenue Road691 m away | 59 m² | 79 m² | +20 m² +34% | 2026 |
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| 59, Edward Road431 m away | 65 m² | 85 m² | +20 m² +31% | 2025 |
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| 58, Byne Road745 m away | 128 m² | 148 m² | +20 m² +16% | 2023 |
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| 14, Green Lane412 m away | 118 m² | 138 m² | +20 m² +17% | 2022 |
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| 16a, Avington Grove138 m away | 84 m² | 104 m² | +20 m² +24% | 2021 |
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| 47a, Anerley Park635 m away | 101 m² | 121 m² | +20 m² +20% | 2021 |
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| 85, Parish Lane659 m away | 90 m² | 110 m² | +20 m² +22% | 2019 |
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| Flat 1, Foxley Manor, 24, Anerley Park812 m away | 27 m² | 47 m² | +20 m² +74% | 2015 |
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| 102a, Croydon Road723 m away | 76 m² | 96 m² | +20 m² +26% | 2014 |
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| 50, Tennyson Road547 m away | 66 m² | 85 m² | +19 m² +29% | 2026 |
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| 18, Phoenix Road252 m away | 114 m² | 133 m² | +19 m² +17% | 2025 |
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| 29, Tennyson Road547 m away | 92 m² | 111 m² | +19 m² +21% | 2025 |
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| 192a, Anerley Road917 m away | 40 m² | 59 m² | +19 m² +48% | 2025 |
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| 249, Beckenham Road987 m away | 18 m² | 37 m² | +19 m² +106% | 2025 |
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| 5, Trenholme Terrace601 m away | 46 m² | 65 m² | +19 m² +41% | 2024 |
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| 85a, Royston Road798 m away | 68 m² | 87 m² | +19 m² +28% | 2024 |
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| Flat 6, Mayne Court, 48, Crystal Palace Park Road841 m away | 51 m² | 70 m² | +19 m² +37% | 2024 |
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| Flat 12, Sycamore House, 53a, Lennard Road515 m away | 40 m² | 59 m² | +19 m² +48% | 2020 |
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| 20a, Castledine Road717 m away | 57 m² | 76 m² | +19 m² +33% | 2018 |
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