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 7JH
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 Road471 m away | 246 m² | 387 m² | +141 m² +57% | 2012 |
| 130, Maple Road426 m away | 100 m² | 210 m² | +110 m² +110% | 2014 |
| 88, Venner Road815 m away | 340 m² | 448 m² | +108 m² +32% | 2017 |
| 26, Avington Grove558 m away | 192 m² | 290 m² | +98 m² +51% | 2014 |
| 58, Woodbastwick Road749 m away | 130 m² | 226 m² | +96 m² +74% | 2021 |
| 46, Churchfields Road955 m away | 79 m² | 173 m² | +94 m² +119% | 2010 |
| 37, Kings Hall Road447 m away | 187 m² | 280 m² | +93 m² +50% | 2021 |
| 67, Kings Hall Road743 m away | 124 m² | 215 m² | +91 m² +73% | 2020 |
| 29, Wiverton Road636 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.
| 110 m² |
| 197 m² |
| +87 m² +79% |
| 2024 |
| 136, Lennard Road496 m away | 139 m² | 220 m² | +81 m² +58% | 2026 |
|---|
| 29, Maple Road857 m away | 76 m² | 157 m² | +81 m² +107% | 2018 |
|---|
| 194, Beckenham Road673 m away | 337 m² | 418 m² | +81 m² +24% | 2017 |
|---|
| 30, Tannsfeld Road972 m away | 106 m² | 180 m² | +74 m² +70% | 2026 |
|---|
| 10, Alexandra Road385 m away | 129 m² | 200 m² | +71 m² +55% | 2025 |
|---|
| 98, Avenue Road926 m away | 72 m² | 143 m² | +71 m² +99% | 2025 |
|---|
| 59, Anerley Park823 m away | 140 m² | 211 m² | +71 m² +51% | 2024 |
|---|
| 26, Ravenscroft Road721 m away | 89 m² | 157 m² | +68 m² +76% | 2025 |
|---|
| 19, Chesham Crescent917 m away | 105 m² | 172 m² | +67 m² +64% | 2014 |
|---|
| 45, Kingsdale Road311 m away | 64 m² | 128 m² | +64 m² +100% | 2020 |
|---|
| 15, Tredown Road877 m away | 128 m² | 191 m² | +63 m² +49% | 2014 |
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| 48, Barnmead Road683 m away | 117 m² | 179 m² | +62 m² +53% | 2020 |
|---|
| 80, Ravenscroft Road721 m away | 102 m² | 164 m² | +62 m² +61% | 2020 |
|---|
| 50, Birkbeck Road751 m away | 106 m² | 166 m² | +60 m² +57% | 2025 |
|---|
| 56, Woodbastwick Road749 m away | 134 m² | 194 m² | +60 m² +45% | 2022 |
|---|
| 152, Blandford Road992 m away | 83 m² | 143 m² | +60 m² +72% | 2021 |
|---|
| 295, Beckenham Road661 m away | 125 m² | 185 m² | +60 m² +48% | 2016 |
|---|
| 14, Tannsfeld Road972 m away | 120 m² | 179 m² | +59 m² +49% | 2020 |
|---|
| 72, Knighton Park Road861 m away | 61 m² | 119 m² | +58 m² +95% | 2022 |
|---|
| 8, Alexandra Road385 m away | 137 m² | 195 m² | +58 m² +42% | 2020 |
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| 91, Knighton Park Road876 m away | 95 m² | 152 m² | +57 m² +60% | 2014 |
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| 263, Kent House Road322 m away | 131 m² | 187 m² | +56 m² +43% | 2024 |
|---|
| 68a, Newlands Park797 m away | 96 m² | 152 m² | +56 m² +58% | 2023 |
|---|
| 90, Lennard Road250 m away | 204 m² | 260 m² | +56 m² +27% | 2018 |
|---|
| 214, Kent House Road283 m away | 120 m² | 175 m² | +55 m² +46% | 2026 |
|---|
| 6, Kenilworth Road547 m away | 104 m² | 158 m² | +54 m² +52% | 2020 |
|---|
| 7, Alexandra Road385 m away | 135 m² | 189 m² | +54 m² +40% | 2018 |
|---|
| 9, Trewsbury Road902 m away | 165 m² | 219 m² | +54 m² +33% | 2016 |
|---|
| 29, Kingswood Road604 m away | 93 m² | 146 m² | +53 m² +57% | 2026 |
|---|
| 81, Mackenzie Road944 m away | 60 m² | 113 m² | +53 m² +88% | 2022 |
|---|
| 260, Kent House Road283 m away | 113 m² | 166 m² | +53 m² +47% | 2016 |
|---|
| 27, Phoenix Road465 m away | 126 m² | 178 m² | +52 m² +41% | 2024 |
|---|
| 194, Venner Road540 m away | 127 m² | 179 m² | +52 m² +41% | 2024 |
|---|
| 43, Reddons Road420 m away | 181 m² | 233 m² | +52 m² +29% | 2021 |
|---|
| 11, Cator Road540 m away | 265 m² | 317 m² | +52 m² +20% | 2016 |
|---|
| 5, Southey Street186 m away | 94 m² | 144 m² | +50 m² +53% | 2025 |
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| 102, Kent House Road842 m away | 132 m² | 182 m² | +50 m² +38% | 2016 |
|---|
| 43b, Wiverton Road636 m away | 63 m² | 113 m² | +50 m² +79% | 2014 |
|---|
| 86, Barnmead Road516 m away | 97 m² | 146 m² | +49 m² +51% | 2022 |
|---|
| 106, Mackenzie Road899 m away | 76 m² | 125 m² | +49 m² +64% | 2016 |
|---|
| 140, Kent House Road581 m away | 139 m² | 187 m² | +48 m² +35% | 2023 |
|---|
| 5, Kenilworth Road547 m away | 98 m² | 146 m² | +48 m² +49% | 2022 |
|---|
| 15, Whateley Road143 m away | 85 m² | 132 m² | +47 m² +55% | 2021 |
|---|
| 131, Parish Lane0 m away | 75 m² | 122 m² | +47 m² +63% | 2017 |
|---|
| 10a, Avington Grove558 m away | 58 m² | 104 m² | +46 m² +79% | 2025 |
|---|
| 76, Kings Hall Road673 m away | 203 m² | 248 m² | +45 m² +22% | 2026 |
|---|
| 4, Tannsfeld Road972 m away | 132 m² | 177 m² | +45 m² +34% | 2021 |
|---|
| 37, Kingswood Road604 m away | 89 m² | 132 m² | +43 m² +48% | 2024 |
|---|
| 96a, Byne Road785 m away | 72 m² | 115 m² | +43 m² +60% | 2021 |
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| 39, Queen Adelaide Road284 m away | 31 m² | 74 m² | +43 m² +139% | 2010 |
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| 4, Studland Road663 m away | 139 m² | 181 m² | +42 m² +30% | 2025 |
|---|
| 33, Kenilworth Road547 m away | 91 m² | 133 m² | +42 m² +46% | 2020 |
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| 18, Green Lane169 m away | 49 m² | 91 m² | +42 m² +86% | 2016 |
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| 95, Wiverton Road760 m away | 134 m² | 176 m² | +42 m² +31% | 2015 |
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| 48, Chesham Road916 m away | 121 m² | 162 m² | +41 m² +34% | 2025 |
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| 53, Girton Road938 m away | 89 m² | 130 m² | +41 m² +46% | 2024 |
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| 99, Wiverton Road760 m away | 90 m² | 131 m² | +41 m² +46% | 2017 |
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| 11, Lennard Road306 m away | 72 m² | 113 m² | +41 m² +57% | 2014 |
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| 3, Phoenix Road465 m away | 141 m² | 181 m² | +40 m² +28% | 2025 |
|---|
| 1, Lennard Road375 m away | 94 m² | 134 m² | +40 m² +43% | 2024 |
|---|
| 137, Newlands Park910 m away | 111 m² | 151 m² | +40 m² +36% | 2015 |
|---|
| 30, Avington Grove558 m away | 86 m² | 126 m² | +40 m² +47% | 2014 |
|---|
| 171, Kings Hall Road887 m away | 154 m² | 193 m² | +39 m² +25% | 2025 |
|---|
| 85, Ravenscroft Road741 m away | 91 m² | 130 m² | +39 m² +43% | 2024 |
|---|
| 71, Kingswood Road604 m away | 88 m² | 127 m² | +39 m² +44% | 2022 |
|---|
| 26, Barnmead Road683 m away | 194 m² | 233 m² | +39 m² +20% | 2021 |
|---|
| 285, Beckenham Road661 m away | 59 m² | 97 m² | +38 m² +64% | 2026 |
|---|
| 134, Blandford Road992 m away | 110 m² | 148 m² | +38 m² +35% | 2023 |
|---|
| Flat 61, Queen Adelaide Court, Queen Adelaide Road301 m away | 36 m² | 74 m² | +38 m² +106% | 2020 |
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| 181, High Street332 m away | 32 m² | 70 m² | +38 m² +119% | 2019 |
|---|
| 174, Beckenham Road673 m away | 178 m² | 215 m² | +37 m² +21% | 2026 |
|---|
| 88, Lennard Road250 m away | 204 m² | 241 m² | +37 m² +18% | 2023 |
|---|
| 106, Kent House Road842 m away | 177 m² | 214 m² | +37 m² +21% | 2023 |
|---|
| 37, Kenilworth Road547 m away | 85 m² | 122 m² | +37 m² +44% | 2022 |
|---|
| 25, Kingswood Road604 m away | 86 m² | 122 m² | +36 m² +42% | 2025 |
|---|
| 10, Crampton Road658 m away | 95 m² | 131 m² | +36 m² +38% | 2024 |
|---|
| 40, Barnmead Road683 m away | 164 m² | 200 m² | +36 m² +22% | 2023 |
|---|
| 76, Blandford Road908 m away | 86 m² | 122 m² | +36 m² +42% | 2021 |
|---|
| 9, Elvino Road835 m away | 100 m² | 136 m² | +36 m² +36% | 2012 |
|---|
| 19, Wiverton Road636 m away | 129 m² | 165 m² | +36 m² +28% | 2010 |
|---|
| 73, Ravenscroft Road741 m away | 101 m² | 136 m² | +35 m² +35% | 2022 |
|---|
| 7, Blandford Avenue995 m away | 84 m² | 119 m² | +35 m² +42% | 2017 |
|---|
| 277, Beckenham Road661 m away | 103 m² | 138 m² | +35 m² +34% | 2014 |
|---|
| 68, Oakfield Road916 m away | 88 m² | 123 m² | +35 m² +40% | 2014 |
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| 31, Girton Road938 m away | 88 m² | 122 m² | +34 m² +39% | 2024 |
|---|
| 55, Wordsworth Road128 m away | 89 m² | 123 m² | +34 m² +38% | 2021 |
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| 7, Girton Road938 m away | 80 m² | 114 m² | +34 m² +43% | 2021 |
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| 13, Stodart Road864 m away | 131 m² | 165 m² | +34 m² +26% | 2017 |
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| 17, Padua Road725 m away | 61 m² | 95 m² | +34 m² +56% | 2016 |
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| 16, Padua Road725 m away | 119 m² | 152 m² | +33 m² +28% | 2026 |
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| 27, Montrave Road464 m away | 135 m² | 168 m² | +33 m² +24% | 2024 |
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| 116, Blandford Road992 m away | 85 m² | 118 m² | +33 m² +39% | 2023 |
|---|
| 19, Eastwell Close591 m away | 90 m² | 123 m² | +33 m² +37% | 2021 |
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| 186, Maple Road341 m away | 53 m² | 86 m² | +33 m² +62% | 2020 |
|---|
| 5, Beckett Walk592 m away | 47 m² | 80 m² | +33 m² +70% | 2013 |
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| 38, Birkbeck Road751 m away | 99 m² | 131 m² | +32 m² +32% | 2026 |
|---|
| 114, Anerley Park823 m away | 125 m² | 157 m² | +32 m² +26% | 2026 |
|---|
| 33, Girton Road938 m away | 92 m² | 124 m² | +32 m² +35% | 2024 |
|---|
| 58, Kingswood Road572 m away | 117 m² | 149 m² | +32 m² +27% | 2023 |
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| 130, Lennard Road496 m away | 68 m² | 100 m² | +32 m² +47% | 2022 |
|---|
| 16, Blandford Road908 m away | 95 m² | 127 m² | +32 m² +34% | 2015 |
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| 62, Barnmead Road683 m away | 120 m² | 151 m² | +31 m² +26% | 2026 |
|---|
| 1, Wiverton Road636 m away | 129 m² | 160 m² | +31 m² +24% | 2025 |
|---|
| 31, Torr Road222 m away | 86 m² | 117 m² | +31 m² +36% | 2023 |
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| Ground Floor, 44, Wiverton Road614 m away | 53 m² | 84 m² | +31 m² +58% | 2022 |
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| 50a, Croydon Road590 m away | 69 m² | 100 m² | +31 m² +45% | 2021 |
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| 40, Stodart Road864 m away | 103 m² | 134 m² | +31 m² +30% | 2019 |
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| 1, Birkbeck Road779 m away | 50 m² | 81 m² | +31 m² +62% | 2018 |
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| Flat 4, 47, Newlands Park574 m away | 32 m² | 63 m² | +31 m² +97% | 2016 |
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| 30, Parish Lane283 m away | 42 m² | 73 m² | +31 m² +74% | 2010 |
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| 46, Blandford Road908 m away | 98 m² | 128 m² | +30 m² +31% | 2025 |
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| 2, Lennard Terrace374 m away | 99 m² | 129 m² | +30 m² +30% | 2020 |
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| 5, Elvino Road835 m away | 105 m² | 135 m² | +30 m² +29% | 2020 |
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| 15, Green Lane169 m away | 111 m² | 141 m² | +30 m² +27% | 2015 |
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| 62, Knighton Park Road861 m away | 136 m² | 165 m² | +29 m² +21% | 2025 |
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| 13, Kings Hall Road447 m away | 168 m² | 197 m² | +29 m² +17% | 2024 |
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| 22a, Avington Grove558 m away | 35 m² | 64 m² | +29 m² +83% | 2022 |
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| 150, Beckenham Road673 m away | 178 m² | 207 m² | +29 m² +16% | 2021 |
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| 49, Clevedon Road570 m away | 107 m² | 136 m² | +29 m² +27% | 2018 |
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| 50c, Thicket Road980 m away | 67 m² | 95 m² | +28 m² +42% | 2022 |
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| 265a, Beckenham Road661 m away | 74 m² | 102 m² | +28 m² +38% | 2021 |
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| 35a, Tredown Road877 m away | 37 m² | 65 m² | +28 m² +76% | 2021 |
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| Flat 3, Aintree House, Park Court917 m away | 46 m² | 74 m² | +28 m² +61% | 2019 |
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| Flat 9, Coniston Court, Springfield Road934 m away | 45 m² | 73 m² | +28 m² +62% | 2018 |
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| 159b, Venner Road523 m away | 53 m² | 81 m² | +28 m² +53% | 2017 |
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| 28, Green Lane204 m away | 88 m² | 116 m² | +28 m² +32% | 2015 |
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| 51, Kent House Road998 m away | 73 m² | 101 m² | +28 m² +38% | 2014 |
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| Flat 10, Queen Adelaide Court, Queen Adelaide Road244 m away | 45 m² | 72 m² | +27 m² +60% | 2025 |
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| Flat 10, 2 - 4, Trewsbury Road960 m away | 118 m² | 145 m² | +27 m² +23% | 2025 |
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| 70, Wordsworth Road91 m away | 91 m² | 118 m² | +27 m² +30% | 2024 |
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| 36, Somerville Road226 m away | 95 m² | 122 m² | +27 m² +28% | 2022 |
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| 49b, Parish Lane276 m away | 41 m² | 68 m² | +27 m² +66% | 2022 |
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| 26, Churchfields Road955 m away | 86 m² | 113 m² | +27 m² +31% | 2022 |
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| 50, Barnmead Road683 m away | 150 m² | 177 m² | +27 m² +18% | 2021 |
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| 105, Avenue Road890 m away | 71 m² | 98 m² | +27 m² +38% | 2020 |
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| 76, Ravenscroft Road721 m away | 114 m² | 141 m² | +27 m² +24% | 2017 |
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| 94, Ravenscroft Road721 m away | 113 m² | 140 m² | +27 m² +24% | 2017 |
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| 198b, Venner Road540 m away | 47 m² | 74 m² | +27 m² +57% | 2014 |
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| Flat 5, 101a, Parish Lane264 m away | 36 m² | 62 m² | +26 m² +72% | 2025 |
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| Flat 5, Parcell House, Newlands Park479 m away | 56 m² | 82 m² | +26 m² +46% | 2025 |
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| 68, Lennard Road250 m away | 169 m² | 195 m² | +26 m² +15% | 2023 |
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| 34, Kings Hall Road420 m away | 114 m² | 140 m² | +26 m² +23% | 2023 |
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| 56a, Knighton Park Road861 m away | 60 m² | 86 m² | +26 m² +43% | 2023 |
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| 23, Cottingham Road250 m away | 78 m² | 104 m² | +26 m² +33% | 2022 |
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| Flat 6, Strood House, Evelina Road382 m away | 19 m² | 45 m² | +26 m² +137% | 2020 |
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| 2c, Hawthorn Grove916 m away | 96 m² | 122 m² | +26 m² +27% | 2014 |
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| 22, Green Lane169 m away | 42 m² | 67 m² | +25 m² +60% | 2020 |
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| 124, Blandford Road992 m away | 74 m² | 99 m² | +25 m² +34% | 2020 |
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| 29, Chesham Road916 m away | 55 m² | 80 m² | +25 m² +45% | 2019 |
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| 8, Green Lane169 m away | 83 m² | 108 m² | +25 m² +30% | 2009 |
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| 76, Mackenzie Road899 m away | 86 m² | 110 m² | +24 m² +28% | 2025 |
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| 40, Kenilworth Road547 m away | 126 m² | 150 m² | +24 m² +19% | 2024 |
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| 30, Birkbeck Road751 m away | 89 m² | 113 m² | +24 m² +27% | 2022 |
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| 27, Albert Road169 m away | 44 m² | 68 m² | +24 m² +55% | 2021 |
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| 19, Chaffinch Road976 m away | 93 m² | 117 m² | +24 m² +26% | 2018 |
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| Flat 5, 26, Chestnut Grove765 m away | 45 m² | 69 m² | +24 m² +53% | 2017 |
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| 93, Tannsfeld Road795 m away | 91 m² | 115 m² | +24 m² +26% | 2015 |
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| 25, Whateley Road143 m away | 90 m² | 113 m² | +23 m² +26% | 2026 |
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| 152, Maple Road426 m away | 52 m² | 75 m² | +23 m² +44% | 2025 |
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| 76, Birkbeck Road835 m away | 92 m² | 115 m² | +23 m² +25% | 2022 |
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| 25, Tennyson Road127 m away | 89 m² | 112 m² | +23 m² +26% | 2021 |
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| 222, Venner Road540 m away | 118 m² | 141 m² | +23 m² +19% | 2021 |
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| 98c, Newlands Park978 m away | 59 m² | 82 m² | +23 m² +39% | 2021 |
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| Flat 4, 9, St Johns Road426 m away | 37 m² | 60 m² | +23 m² +62% | 2018 |
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| Flat 10, Golden Mews, 15, Howard Road611 m away | 71 m² | 94 m² | +23 m² +32% | 2018 |
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| 58, Hawthorn Grove916 m away | 52 m² | 75 m² | +23 m² +44% | 2017 |
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| 61, Venner Road770 m away | 55 m² | 78 m² | +23 m² +42% | 2010 |
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| Flat 21, The Firs, 43, Venner Road951 m away | 91 m² | 113 m² | +22 m² +24% | 2025 |
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| 4, Mackenzie Road815 m away | 103 m² | 125 m² | +22 m² +21% | 2023 |
|---|
| 30, Blandford Avenue995 m away | 74 m² | 96 m² | +22 m² +30% | 2021 |
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| 7a, Howard Road611 m away | 85 m² | 107 m² | +22 m² +26% | 2020 |
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| Flat 7, 56, Thicket Road980 m away | 41 m² | 63 m² | +22 m² +54% | 2020 |
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| 112b, Lennard Road366 m away | 90 m² | 112 m² | +22 m² +24% | 2019 |
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| 19, High Street671 m away | 78 m² | 100 m² | +22 m² +28% | 2019 |
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| 3, Tennyson Road127 m away | 49 m² | 71 m² | +22 m² +45% | 2016 |
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| 43, Tannsfeld Road968 m away | 125 m² | 147 m² | +22 m² +18% | 2016 |
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| Flat 26, Roberts Court, Maple Road787 m away | 39 m² | 61 m² | +22 m² +56% | 2014 |
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| 88, Tannsfeld Road806 m away | 121 m² | 143 m² | +22 m² +18% | 2011 |
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| 14, Parkside Close422 m away | 60 m² | 81 m² | +21 m² +35% | 2025 |
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| 8, Queen Adelaide Road284 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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| 11, Broseley Grove910 m away | 71 m² | 92 m² | +21 m² +30% | 2024 |
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| 35, Cottingham Road250 m away | 78 m² | 99 m² | +21 m² +27% | 2022 |
|---|
| 13, Elvino Road835 m away | 100 m² | 121 m² | +21 m² +21% | 2022 |
|---|
| 152, Ravenscroft Road991 m away | 66 m² | 87 m² | +21 m² +32% | 2022 |
|---|
| 198a, Venner Road540 m away | 66 m² | 87 m² | +21 m² +32% | 2020 |
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| 45b, Royston Road685 m away | 67 m² | 88 m² | +21 m² +31% | 2020 |
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| 115, Newlands Park910 m away | 69 m² | 90 m² | +21 m² +30% | 2018 |
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| 10, Graveney Grove706 m away | 82 m² | 103 m² | +21 m² +26% | 2014 |
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| Flat 49, Deverill Court, Avenue Road737 m away | 59 m² | 79 m² | +20 m² +34% | 2026 |
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| 8, Thayers Farm Road936 m away | 68 m² | 88 m² | +20 m² +29% | 2026 |
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