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 SE20 8AR
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 |
|---|---|---|---|---|
| 7, Tudor Road827 m away | 370 m² | 535 m² | +165 m² +45% | 2025 |
| 32, Crystal Palace Park Road942 m away | 139 m² | 300 m² | +161 m² +116% | 2019 |
| 130, Maple Road939 m away | 100 m² | 210 m² | +110 m² +110% | 2014 |
| 26, Avington Grove771 m away | 192 m² | 290 m² | +98 m² +51% | 2014 |
| 33, Belvedere Road790 m away | 189 m² | 277 m² | +88 m² +47% | 2025 |
| 29, Maple Road752 m away | 76 m² | 157 m² | +81 m² +107% | 2018 |
| 39, Stambourne Way824 m away | 82 m² | 162 m² | +80 m² +98% | 2022 |
| 4, Nesbitt Square983 m away | 159 m² | 232 m² | +73 m² +46% | 2025 |
| 59, Anerley Park582 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.
| 140 m² |
| 211 m² |
| +71 m² +51% |
| 2024 |
| 1, Pleydell Avenue537 m away | 102 m² | 172 m² | +70 m² +69% | 2009 |
|---|
| 115, Croydon Road961 m away | 261 m² | 329 m² | +68 m² +26% | 2017 |
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| 34, Crystal Palace Park Road942 m away | 216 m² | 283 m² | +67 m² +31% | 2022 |
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| 14, Milestone Road713 m away | 125 m² | 190 m² | +65 m² +52% | 2024 |
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| 39, Pleydell Avenue537 m away | 62 m² | 127 m² | +65 m² +105% | 2023 |
|---|
| 7, Lansdowne Place858 m away | 153 m² | 214 m² | +61 m² +40% | 2021 |
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| 19, Milestone Road713 m away | 83 m² | 139 m² | +56 m² +67% | 2017 |
|---|
| 22, Milestone Road713 m away | 71 m² | 126 m² | +55 m² +77% | 2022 |
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| 34, Jasmine Grove543 m away | 150 m² | 204 m² | +54 m² +36% | 2024 |
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| 29, Kingswood Road882 m away | 93 m² | 146 m² | +53 m² +57% | 2026 |
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| 11, Pleydell Avenue537 m away | 43 m² | 96 m² | +53 m² +123% | 2023 |
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| 120, Sylvan Road813 m away | 73 m² | 121 m² | +48 m² +66% | 2023 |
|---|
| 25, Milestone Road713 m away | 87 m² | 135 m² | +48 m² +55% | 2021 |
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| 10a, Avington Grove771 m away | 58 m² | 104 m² | +46 m² +79% | 2025 |
|---|
| 1, The Dell842 m away | 85 m² | 131 m² | +46 m² +54% | 2023 |
|---|
| 18, Cintra Park617 m away | 86 m² | 130 m² | +44 m² +51% | 2020 |
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| 37, Kingswood Road882 m away | 89 m² | 132 m² | +43 m² +48% | 2024 |
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| 20, Hamlet Road387 m away | 164 m² | 205 m² | +41 m² +25% | 2017 |
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| 116, Sylvan Road813 m away | 34 m² | 74 m² | +40 m² +118% | 2025 |
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| 8, The Dell842 m away | 90 m² | 130 m² | +40 m² +44% | 2020 |
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| Flat 4, 11, Thicket Road97 m away | 35 m² | 75 m² | +40 m² +114% | 2012 |
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| 71, Kingswood Road882 m away | 88 m² | 127 m² | +39 m² +44% | 2022 |
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| 21, Patterson Road754 m away | 127 m² | 166 m² | +39 m² +31% | 2011 |
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| Flat 2, 87, Anerley Road94 m away | 63 m² | 101 m² | +38 m² +60% | 2017 |
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| 2, Stambourne Way824 m away | 99 m² | 136 m² | +37 m² +37% | 2024 |
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| Flat C, 25, Hamlet Road337 m away | 38 m² | 75 m² | +37 m² +97% | 2021 |
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| Flat 19, Brooklyn, Anerley Road162 m away | 46 m² | 83 m² | +37 m² +80% | 2014 |
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| 25, Kingswood Road882 m away | 86 m² | 122 m² | +36 m² +42% | 2025 |
|---|
| 10, Crampton Road841 m away | 95 m² | 131 m² | +36 m² +38% | 2024 |
|---|
| 8, Tree View Close971 m away | 114 m² | 150 m² | +36 m² +32% | 2024 |
|---|
| 9, The Dell842 m away | 90 m² | 125 m² | +35 m² +39% | 2025 |
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| 129, Croydon Road961 m away | 227 m² | 262 m² | +35 m² +15% | 2024 |
|---|
| 68, Oakfield Road466 m away | 88 m² | 123 m² | +35 m² +40% | 2014 |
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| Inchbare, Maple Road727 m away | 34 m² | 68 m² | +34 m² +100% | 2023 |
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| 2, Nesbitt Square983 m away | 151 m² | 185 m² | +34 m² +23% | 2019 |
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| 9, Milestone Road713 m away | 90 m² | 124 m² | +34 m² +38% | 2018 |
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| 13, Stodart Road871 m away | 131 m² | 165 m² | +34 m² +26% | 2017 |
|---|
| Flat 2, 10, Thicket Road83 m away | 39 m² | 73 m² | +34 m² +87% | 2016 |
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| 17, Padua Road895 m away | 61 m² | 95 m² | +34 m² +56% | 2016 |
|---|
| 16, Padua Road895 m away | 119 m² | 152 m² | +33 m² +28% | 2026 |
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| 27, Montrave Road925 m away | 135 m² | 168 m² | +33 m² +24% | 2024 |
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| 186, Maple Road993 m away | 53 m² | 86 m² | +33 m² +62% | 2020 |
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| 22, Hamlet Road387 m away | 153 m² | 186 m² | +33 m² +22% | 2017 |
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| 70, Anerley Park283 m away | 53 m² | 86 m² | +33 m² +62% | 2010 |
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| Flat 7, Park House, Anerley Park100 m away | 57 m² | 90 m² | +33 m² +58% | 2009 |
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| 47, Pleydell Avenue537 m away | 135 m² | 167 m² | +32 m² +24% | 2026 |
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| 114, Anerley Park582 m away | 125 m² | 157 m² | +32 m² +26% | 2026 |
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| 58, Kingswood Road896 m away | 117 m² | 149 m² | +32 m² +27% | 2023 |
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| 5, Milestone Road713 m away | 94 m² | 125 m² | +31 m² +33% | 2026 |
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| 40, Stodart Road871 m away | 103 m² | 134 m² | +31 m² +30% | 2019 |
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| 1, Wadhurst Close933 m away | 56 m² | 87 m² | +31 m² +55% | 2016 |
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| 49b, Anerley Park283 m away | 80 m² | 111 m² | +31 m² +39% | 2015 |
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| 105, Seymour Villas591 m away | 62 m² | 92 m² | +30 m² +48% | 2026 |
|---|
| 1, Brunel Close969 m away | 78 m² | 108 m² | +30 m² +38% | 2015 |
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| Flat 25, Brooklyn, Anerley Road162 m away | 40 m² | 70 m² | +30 m² +75% | 2013 |
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| Flat 32, Hanover Court, Anerley Road463 m away | 38 m² | 67 m² | +29 m² +76% | 2023 |
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| 2, Shelford Rise916 m away | 75 m² | 104 m² | +29 m² +39% | 2023 |
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| 22a, Avington Grove771 m away | 35 m² | 64 m² | +29 m² +83% | 2022 |
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| 42a, Fox Hill603 m away | 97 m² | 126 m² | +29 m² +30% | 2021 |
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| Flat F, 9, Hamlet Road337 m away | 31 m² | 60 m² | +29 m² +94% | 2017 |
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| 14, Shelford Rise916 m away | 88 m² | 117 m² | +29 m² +33% | 2015 |
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| 50c, Thicket Road479 m away | 67 m² | 95 m² | +28 m² +42% | 2022 |
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| Flat 3, Aintree House, Park Court861 m away | 46 m² | 74 m² | +28 m² +61% | 2019 |
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| Flat 9, Coniston Court, Springfield Road964 m away | 45 m² | 73 m² | +28 m² +62% | 2018 |
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| 37b, Waldegrave Road392 m away | 37 m² | 63 m² | +26 m² +70% | 2023 |
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| Flat D, 108, Auckland Road914 m away | 60 m² | 86 m² | +26 m² +43% | 2022 |
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| 48, Fox Hill603 m away | 110 m² | 136 m² | +26 m² +24% | 2020 |
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| 2c, Hawthorn Grove540 m away | 96 m² | 122 m² | +26 m² +27% | 2014 |
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| 36, Sylvan Road813 m away | 45 m² | 71 m² | +26 m² +58% | 2014 |
|---|
| Flat 5, 110, Auckland Road914 m away | 79 m² | 104 m² | +25 m² +32% | 2020 |
|---|
| 2, Crampton Road841 m away | 86 m² | 111 m² | +25 m² +29% | 2019 |
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| 29a, Westow Street981 m away | 86 m² | 111 m² | +25 m² +29% | 2017 |
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| 24, Trenholme Road304 m away | 75 m² | 99 m² | +24 m² +32% | 2026 |
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| 20, Cintra Park617 m away | 88 m² | 112 m² | +24 m² +27% | 2024 |
|---|
| 1, Seymour Terrace675 m away | 138 m² | 162 m² | +24 m² +17% | 2024 |
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| Flat 1, 68, Belvedere Road444 m away | 89 m² | 113 m² | +24 m² +27% | 2023 |
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| 38, Pleydell Avenue568 m away | 87 m² | 111 m² | +24 m² +28% | 2022 |
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| 197, Church Road978 m away | 156 m² | 180 m² | +24 m² +15% | 2022 |
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| Flat 5, 26, Chestnut Grove668 m away | 45 m² | 69 m² | +24 m² +53% | 2017 |
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| 71, Church Road880 m away | 52 m² | 76 m² | +24 m² +46% | 2012 |
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| 20e, Anerley Hill677 m away | 63 m² | 86 m² | +23 m² +37% | 2026 |
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| 152, Maple Road939 m away | 52 m² | 75 m² | +23 m² +44% | 2025 |
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| 30, Seymour Villas556 m away | 74 m² | 97 m² | +23 m² +31% | 2024 |
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| Flat 4, 9, St Johns Road937 m away | 37 m² | 60 m² | +23 m² +62% | 2018 |
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| Flat 10, Golden Mews, 15, Howard Road938 m away | 71 m² | 94 m² | +23 m² +32% | 2018 |
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| 58, Hawthorn Grove540 m away | 52 m² | 75 m² | +23 m² +44% | 2017 |
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| 65, William Booth Road294 m away | 40 m² | 63 m² | +23 m² +57% | 2014 |
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| 41, William Booth Road294 m away | 40 m² | 63 m² | +23 m² +57% | 2014 |
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| Flat 29, Carlton Court, Auckland Road814 m away | 47 m² | 70 m² | +23 m² +49% | 2014 |
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| Flat 22, Brooklyn, Anerley Road162 m away | 66 m² | 89 m² | +23 m² +35% | 2012 |
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| 11, Trenholme Road304 m away | 87 m² | 109 m² | +22 m² +25% | 2023 |
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| Flat 7, 56, Thicket Road479 m away | 41 m² | 63 m² | +22 m² +54% | 2020 |
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| 24a, Jasmine Grove543 m away | 31 m² | 53 m² | +22 m² +71% | 2020 |
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| 7a, Howard Road938 m away | 85 m² | 107 m² | +22 m² +26% | 2020 |
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| Flat 2, 11, Thicket Road97 m away | 35 m² | 57 m² | +22 m² +63% | 2019 |
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| 19, High Street753 m away | 78 m² | 100 m² | +22 m² +28% | 2019 |
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| Flat C, 9, Hamlet Road337 m away | 42 m² | 64 m² | +22 m² +52% | 2017 |
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| Flat 6b, Ellesmere Court, Seymour Villas757 m away | 70 m² | 92 m² | +22 m² +31% | 2017 |
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| Flat 26, Roberts Court, Maple Road808 m away | 39 m² | 61 m² | +22 m² +56% | 2014 |
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| 14, Parkside Close906 m away | 60 m² | 81 m² | +21 m² +35% | 2025 |
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| 30, Pleydell Avenue568 m away | 94 m² | 115 m² | +21 m² +22% | 2023 |
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| 2a, Milestone Road713 m away | 98 m² | 119 m² | +21 m² +21% | 2023 |
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| Flat 4, 19, Thicket Road97 m away | 30 m² | 51 m² | +21 m² +70% | 2019 |
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| Flat 5, 3, Anerley Hill578 m away | 69 m² | 90 m² | +21 m² +30% | 2019 |
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| Flat 6, 4, Lansdowne Place861 m away | 91 m² | 112 m² | +21 m² +23% | 2019 |
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| Flat 2, Brooklyn, Anerley Road162 m away | 49 m² | 70 m² | +21 m² +43% | 2014 |
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| 10, Graveney Grove669 m away | 82 m² | 103 m² | +21 m² +26% | 2014 |
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| Flat 10, Isis House, 5, Worcester Close341 m away | 64 m² | 84 m² | +20 m² +31% | 2025 |
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| Flat 20, Isis House, 5, Worcester Close341 m away | 64 m² | 84 m² | +20 m² +31% | 2023 |
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| 47a, Anerley Park283 m away | 101 m² | 121 m² | +20 m² +20% | 2021 |
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| 16a, Avington Grove771 m away | 84 m² | 104 m² | +20 m² +24% | 2021 |
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| 46, Crystal Palace Park Road942 m away | 37 m² | 57 m² | +20 m² +54% | 2021 |
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| Flat 1, Foxley Manor, 24, Anerley Park120 m away | 27 m² | 47 m² | +20 m² +74% | 2015 |
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| 82c, Westow Hill906 m away | 52 m² | 72 m² | +20 m² +38% | 2015 |
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| 102a, Croydon Road943 m away | 76 m² | 96 m² | +20 m² +26% | 2014 |
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| 68, Sylvan Road813 m away | 73 m² | 93 m² | +20 m² +27% | 2013 |
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| 21a, Waldegrave Road392 m away | 110 m² | 129 m² | +19 m² +17% | 2025 |
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| 192a, Anerley Road556 m away | 40 m² | 59 m² | +19 m² +48% | 2025 |
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| 5, Trenholme Terrace310 m away | 46 m² | 65 m² | +19 m² +41% | 2024 |
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| Flat 6, Mayne Court, 48, Crystal Palace Park Road960 m away | 51 m² | 70 m² | +19 m² +37% | 2024 |
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| 11, Carberry Road983 m away | 73 m² | 92 m² | +19 m² +26% | 2019 |
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| 20a, Castledine Road209 m away | 57 m² | 76 m² | +19 m² +33% | 2018 |
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| 23, Ridsdale Road227 m away | 45 m² | 64 m² | +19 m² +42% | 2015 |
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| 5, Cranleigh Close705 m away | 38 m² | 57 m² | +19 m² +50% | 2014 |
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| 83d, Anerley Road94 m away | 94 m² | 113 m² | +19 m² +20% | 2012 |
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| 9, Owen Walk193 m away | 56 m² | 74 m² | +18 m² +32% | 2024 |
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| Flat 16, Readman Court, 42, Jasmine Grove651 m away | 37 m² | 55 m² | +18 m² +49% | 2022 |
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| Flat 11, 175, Anerley Road533 m away | 42 m² | 60 m² | +18 m² +43% | 2020 |
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| Flat 2, Fountain Court, Lawrie Park Road860 m away | 46 m² | 64 m² | +18 m² +39% | 2019 |
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| 101, Tovil Close949 m away | 82 m² | 100 m² | +18 m² +22% | 2019 |
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| 12, Sheldon Close600 m away | 43 m² | 61 m² | +18 m² +42% | 2015 |
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| 6, Parkside Close906 m away | 69 m² | 87 m² | +18 m² +26% | 2014 |
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| Flat 12, Ellesmere Court, Seymour Villas757 m away | 69 m² | 87 m² | +18 m² +26% | 2012 |
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| 185a, Anerley Road688 m away | 70 m² | 88 m² | +18 m² +26% | 2011 |
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| Flat 1, 141, Auckland Road848 m away | 70 m² | 87 m² | +17 m² +24% | 2026 |
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| 9, Trenholme Road304 m away | 87 m² | 104 m² | +17 m² +20% | 2022 |
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| Flat 7, Fountain Court, Lawrie Park Road860 m away | 50 m² | 67 m² | +17 m² +34% | 2020 |
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| 2, Buckleigh Way865 m away | 86 m² | 103 m² | +17 m² +20% | 2019 |
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| 12, Maberley Road584 m away | 57 m² | 74 m² | +17 m² +30% | 2018 |
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| 9, Brunel Close969 m away | 73 m² | 90 m² | +17 m² +23% | 2015 |
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| 71, Maple Road787 m away | 76 m² | 93 m² | +17 m² +22% | 2014 |
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| Flat 43, Brooklyn, Anerley Road162 m away | 53 m² | 70 m² | +17 m² +32% | 2013 |
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| Flat 1, 110, Oakfield Road619 m away | 55 m² | 71 m² | +16 m² +29% | 2026 |
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| Flat D, 35, Anerley Park83 m away | 54 m² | 70 m² | +16 m² +30% | 2025 |
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| Flat 6, Golden Mews, 15, Howard Road938 m away | 54 m² | 70 m² | +16 m² +30% | 2025 |
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| Flat B, 44, Fox Hill603 m away | 52 m² | 68 m² | +16 m² +31% | 2021 |
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| 21a, Padua Road895 m away | 38 m² | 54 m² | +16 m² +42% | 2021 |
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| Flat 2, 32, Anerley Park115 m away | 58 m² | 74 m² | +16 m² +28% | 2020 |
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| Flat 2, 56a, Church Road905 m away | 74 m² | 90 m² | +16 m² +22% | 2020 |
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| Flat 4, 141, Croydon Road961 m away | 41 m² | 57 m² | +16 m² +39% | 2020 |
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| 6a, Avington Grove771 m away | 86 m² | 102 m² | +16 m² +19% | 2016 |
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| 4, Stoneleigh, Mosslea Road927 m away | 38 m² | 54 m² | +16 m² +42% | 2013 |
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| 16, Summit Way953 m away | 95 m² | 110 m² | +15 m² +16% | 2026 |
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| 48, Anerley Park115 m away | 95 m² | 110 m² | +15 m² +16% | 2025 |
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| 20c, Castledine Road209 m away | 35 m² | 50 m² | +15 m² +43% | 2025 |
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| Flat 12, Howard House, Howard Road871 m away | 46 m² | 61 m² | +15 m² +33% | 2025 |
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| 190b, Anerley Road556 m away | 40 m² | 55 m² | +15 m² +38% | 2022 |
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| Flat 9, New Church Court, Waldegrave Road406 m away | 38 m² | 53 m² | +15 m² +39% | 2021 |
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| Flat C, 13, Crystal Palace Park Road687 m away | 77 m² | 92 m² | +15 m² +19% | 2021 |
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| 5, Patterson Road791 m away | 100 m² | 115 m² | +15 m² +15% | 2021 |
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| Flat 2, 95, Anerley Road129 m away | 32 m² | 47 m² | +15 m² +47% | 2020 |
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| 7b, Belvedere Road790 m away | 85 m² | 100 m² | +15 m² +18% | 2019 |
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| 13, Castledine Road209 m away | 46 m² | 61 m² | +15 m² +33% | 2018 |
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| Flat 1, 120, Oakfield Road619 m away | 54 m² | 69 m² | +15 m² +28% | 2018 |
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| 160, Croydon Road912 m away | 32 m² | 47 m² | +15 m² +47% | 2018 |
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| 19, Church Road860 m away | 49 m² | 64 m² | +15 m² +31% | 2017 |
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| 10, Sylvan Hill965 m away | 95 m² | 110 m² | +15 m² +16% | 2017 |
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| 44, Braybrooke Gardens879 m away | 91 m² | 106 m² | +15 m² +16% | 2016 |
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| Flat 25, Anerley Court, Anerley Park413 m away | 33 m² | 48 m² | +15 m² +45% | 2015 |
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| Flat 30, Sherborne Court, Elmers End Road968 m away | 35 m² | 50 m² | +15 m² +43% | 2015 |
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| Flat 2, 47b, Anerley Park283 m away | 44 m² | 59 m² | +15 m² +34% | 2012 |
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| Flat 5, 56, Thicket Road479 m away | 55 m² | 70 m² | +15 m² +27% | 2011 |
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| Flat 5, 175, Anerley Road533 m away | 50 m² | 65 m² | +15 m² +30% | 2011 |
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| 9, High Street753 m away | 30 m² | 45 m² | +15 m² +50% | 2008 |
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