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 BR1 4AP
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 |
|---|---|---|---|---|
| 79, Coniston Road488 m away | 129 m² | 276 m² | +147 m² +114% | 2021 |
| 84, Avondale Road834 m away | 139 m² | 266 m² | +127 m² +91% | 2019 |
| Flat 1, 220, Bromley Road814 m away | 148 m² | 270 m² | +122 m² +82% | 2022 |
| 27, Farnaby Road488 m away | 184 m² | 299 m² | +115 m² +63% | 2025 |
| 173, Farnaby Road379 m away | 105 m² | 216 m² | +111 m² +106% | 2024 |
| 161, Farnaby Road379 m away | 124 m² | 232 m² | +108 m² +87% | 2025 |
| 23, Valley Road885 m away | 134 m² | 240 m² | +106 m² +79% | 2024 |
| 44, Kinnaird Avenue701 m away | 112 m² | 218 m² | +106 m² +95% | 2023 |
| 74, Avondale Road834 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.
| 129 m² |
| 232 m² |
| +103 m² +80% |
| 2025 |
| 9, Park Avenue493 m away | 104 m² | 200 m² | +96 m² +92% | 2011 |
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| 8, Kinnaird Avenue620 m away | 193 m² | 285 m² | +92 m² +48% | 2018 |
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| 2, Coniston Road755 m away | 67 m² | 153 m² | +86 m² +128% | 2022 |
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| 126, Farnaby Road239 m away | 149 m² | 234 m² | +85 m² +57% | 2021 |
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| 74, Madeira Avenue150 m away | 98 m² | 180 m² | +82 m² +84% | 2017 |
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| 124, Madeira Avenue150 m away | 85 m² | 163 m² | +78 m² +92% | 2026 |
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| 54, Farnaby Road545 m away | 130 m² | 208 m² | +78 m² +60% | 2023 |
|---|
| 187, Farnaby Road379 m away | 121 m² | 198 m² | +77 m² +64% | 2013 |
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| Flat 3, 22, Oaklands Road362 m away | 111 m² | 186 m² | +75 m² +68% | 2021 |
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| 103, Coniston Road488 m away | 103 m² | 177 m² | +74 m² +72% | 2023 |
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| 18, Ravensbourne Avenue560 m away | 116 m² | 187 m² | +71 m² +61% | 2025 |
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| 96, Avondale Road834 m away | 132 m² | 202 m² | +70 m² +53% | 2025 |
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| Hillary Mount, Crab Hill847 m away | 158 m² | 228 m² | +70 m² +44% | 2023 |
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| 202, Farnaby Road386 m away | 101 m² | 170 m² | +69 m² +68% | 2021 |
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| 18, Scotts Lane964 m away | 147 m² | 216 m² | +69 m² +47% | 2015 |
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| 45, Alexandra Crescent846 m away | 194 m² | 263 m² | +69 m² +36% | 2014 |
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| 16, Ravensbourne Avenue560 m away | 119 m² | 187 m² | +68 m² +57% | 2026 |
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| 9, Hildenborough Gardens796 m away | 106 m² | 174 m² | +68 m² +64% | 2025 |
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| 47, Alexandra Crescent846 m away | 103 m² | 170 m² | +67 m² +65% | 2014 |
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| 90, Farnaby Road239 m away | 147 m² | 212 m² | +65 m² +44% | 2024 |
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| 93, Farnaby Road210 m away | 85 m² | 149 m² | +64 m² +75% | 2024 |
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| 103, Highland Road413 m away | 110 m² | 171 m² | +61 m² +55% | 2016 |
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| 41, London Lane509 m away | 93 m² | 154 m² | +61 m² +66% | 2014 |
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| 46, Bromley Hill707 m away | 87 m² | 147 m² | +60 m² +69% | 2025 |
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| 14, Warren Avenue186 m away | 91 m² | 151 m² | +60 m² +66% | 2023 |
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| 6, Bromley Avenue111 m away | 82 m² | 141 m² | +59 m² +72% | 2021 |
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| 11, Glebe Road968 m away | 113 m² | 170 m² | +57 m² +50% | 2026 |
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| 49, Alexandra Crescent846 m away | 136 m² | 191 m² | +55 m² +40% | 2026 |
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| 88, Avondale Road834 m away | 177 m² | 232 m² | +55 m² +31% | 2022 |
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| 192, Farnaby Road386 m away | 126 m² | 181 m² | +55 m² +44% | 2020 |
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| 26, Hillbrow Road522 m away | 134 m² | 188 m² | +54 m² +40% | 2024 |
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| 33, Howard Road697 m away | 105 m² | 158 m² | +53 m² +50% | 2020 |
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| 43, Madeira Avenue0 m away | 88 m² | 140 m² | +52 m² +59% | 2026 |
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| 40a, Hammelton Road753 m away | 37 m² | 89 m² | +52 m² +141% | 2024 |
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| 64, Warren Avenue186 m away | 104 m² | 153 m² | +49 m² +47% | 2017 |
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| 68, Warren Avenue186 m away | 89 m² | 137 m² | +48 m² +54% | 2024 |
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| 78, Kings Avenue572 m away | 182 m² | 230 m² | +48 m² +26% | 2024 |
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| 39a, Ullswater Close414 m away | 48 m² | 96 m² | +48 m² +100% | 2010 |
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| 101, Ravensbourne Avenue525 m away | 73 m² | 119 m² | +46 m² +63% | 2026 |
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| 4, Farnaby Road545 m away | 144 m² | 189 m² | +45 m² +31% | 2024 |
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| 23, Calmont Road592 m away | 88 m² | 133 m² | +45 m² +51% | 2020 |
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| 2, Ullswater Close414 m away | 91 m² | 135 m² | +44 m² +48% | 2024 |
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| 57, Downs Hill715 m away | 124 m² | 168 m² | +44 m² +35% | 2019 |
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| 25, Avondale Road825 m away | 226 m² | 269 m² | +43 m² +19% | 2018 |
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| 4, London Lane553 m away | 83 m² | 126 m² | +43 m² +52% | 2015 |
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| 37, Aldermary Road943 m away | 82 m² | 124 m² | +42 m² +51% | 2025 |
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| 74, The Heights987 m away | 105 m² | 147 m² | +42 m² +40% | 2022 |
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| 41, Kinnaird Avenue620 m away | 116 m² | 157 m² | +41 m² +35% | 2023 |
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| 5, Glebe Road968 m away | 111 m² | 152 m² | +41 m² +37% | 2022 |
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| 25, Fairfield Road853 m away | 91 m² | 132 m² | +41 m² +45% | 2020 |
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| 71, Madeira Avenue246 m away | 60 m² | 101 m² | +41 m² +68% | 2014 |
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| 19, Shortlands Gardens629 m away | 86 m² | 126 m² | +40 m² +47% | 2025 |
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| 120, Farnaby Road239 m away | 143 m² | 183 m² | +40 m² +28% | 2019 |
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| 6, Saxon Road615 m away | 98 m² | 137 m² | +39 m² +40% | 2021 |
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| 25, Glebe Road968 m away | 62 m² | 101 m² | +39 m² +63% | 2013 |
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| 50, Coniston Road755 m away | 153 m² | 191 m² | +38 m² +25% | 2026 |
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| 90, Beckenham Lane679 m away | 64 m² | 102 m² | +38 m² +59% | 2018 |
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| Flat 2, 34, College Road858 m away | 42 m² | 79 m² | +37 m² +88% | 2026 |
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| 17, Bromley Avenue108 m away | 105 m² | 142 m² | +37 m² +35% | 2022 |
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| 46a, Morgan Road724 m away | 65 m² | 102 m² | +37 m² +57% | 2019 |
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| 3, Quernmore Road938 m away | 130 m² | 167 m² | +37 m² +28% | 2014 |
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| 87, Park End406 m away | 86 m² | 122 m² | +36 m² +42% | 2020 |
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| 138, Farmfield Road988 m away | 60 m² | 96 m² | +36 m² +60% | 2014 |
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| 6b, Bromley Hill964 m away | 50 m² | 86 m² | +36 m² +72% | 2010 |
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| 94, College Road923 m away | 97 m² | 132 m² | +35 m² +36% | 2026 |
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| 39, Meadow Road607 m away | 100 m² | 135 m² | +35 m² +35% | 2021 |
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| 51, London Lane509 m away | 227 m² | 262 m² | +35 m² +15% | 2019 |
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| 70, Heathfield Road562 m away | 89 m² | 124 m² | +35 m² +39% | 2014 |
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| 25, Morgan Road696 m away | 79 m² | 113 m² | +34 m² +43% | 2023 |
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| 1, Scotts Lane964 m away | 70 m² | 104 m² | +34 m² +49% | 2021 |
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| 32, Saxon Road615 m away | 81 m² | 115 m² | +34 m² +42% | 2020 |
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| 20, Kings Avenue831 m away | 96 m² | 130 m² | +34 m² +35% | 2015 |
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| 1, Ullswater Close414 m away | 162 m² | 196 m² | +34 m² +21% | 2013 |
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| 29, Gilbert Road741 m away | 85 m² | 118 m² | +33 m² +39% | 2025 |
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| 77, College Road906 m away | 149 m² | 182 m² | +33 m² +22% | 2023 |
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| 20, Meadow Road607 m away | 76 m² | 109 m² | +33 m² +43% | 2020 |
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| 123, Avondale Road611 m away | 85 m² | 118 m² | +33 m² +39% | 2015 |
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| Tanti, 107, Ravensbourne Avenue525 m away | 78 m² | 111 m² | +33 m² +42% | 2014 |
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| 143, Ravensbourne Avenue525 m away | 107 m² | 140 m² | +33 m² +31% | 2010 |
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| 64, London Road515 m away | 40 m² | 72 m² | +32 m² +80% | 2025 |
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| 46, College Road858 m away | 113 m² | 145 m² | +32 m² +28% | 2019 |
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| 27, Ravensmead Road546 m away | 98 m² | 130 m² | +32 m² +33% | 2018 |
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| 40, Valley Road997 m away | 56 m² | 88 m² | +32 m² +57% | 2009 |
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| 4, Brackenridge, Bracken Hill Lane598 m away | 135 m² | 166 m² | +31 m² +23% | 2026 |
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| Flat 6, Hill House, 113, Foxgrove Road968 m away | 48 m² | 79 m² | +31 m² +65% | 2025 |
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| 30, Ashgrove Road920 m away | 108 m² | 138 m² | +30 m² +28% | 2026 |
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| 81, Martins Road848 m away | 79 m² | 109 m² | +30 m² +38% | 2023 |
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| Flat 6, Waveney Court, 49, The Avenue990 m away | 34 m² | 64 m² | +30 m² +88% | 2022 |
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| Flat 8, Blyth Wood Park, 20, Blyth Road626 m away | 100 m² | 129 m² | +29 m² +29% | 2021 |
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| 80, Park End406 m away | 83 m² | 112 m² | +29 m² +35% | 2019 |
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| 7, Ashcroft Court, 10, Oaklands Road202 m away | 117 m² | 146 m² | +29 m² +25% | 2016 |
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| 2a, Hammelton Road753 m away | 52 m² | 81 m² | +29 m² +56% | 2013 |
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| 138, Farnaby Road147 m away | 117 m² | 145 m² | +28 m² +24% | 2025 |
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| 68, Howard Road697 m away | 90 m² | 118 m² | +28 m² +31% | 2024 |
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| 7b, Farnaby Road488 m away | 61 m² | 89 m² | +28 m² +46% | 2021 |
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| 86, Beckenham Lane679 m away | 72 m² | 100 m² | +28 m² +39% | 2021 |
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| 171, Farnaby Road379 m away | 110 m² | 138 m² | +28 m² +25% | 2017 |
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| Flat 3, Rushden House, 33, Park Hill Road965 m away | 81 m² | 109 m² | +28 m² +35% | 2015 |
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| 6, Ravensbourne Avenue560 m away | 93 m² | 120 m² | +27 m² +29% | 2025 |
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| Flat 1, Windermere Court, 26, Oaklands Road317 m away | 61 m² | 88 m² | +27 m² +44% | 2024 |
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| Flat 6, Hill House, Hill House Mews849 m away | 55 m² | 82 m² | +27 m² +49% | 2020 |
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| 194, Farnaby Road386 m away | 73 m² | 100 m² | +27 m² +37% | 2016 |
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| 16, Cadogan Close796 m away | 47 m² | 74 m² | +27 m² +57% | 2013 |
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| 15, Martins Road848 m away | 104 m² | 130 m² | +26 m² +25% | 2024 |
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| 3, Hawkshead Close267 m away | 94 m² | 120 m² | +26 m² +28% | 2021 |
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| 71, Kings Avenue572 m away | 99 m² | 124 m² | +25 m² +25% | 2025 |
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| 79, Madeira Avenue246 m away | 119 m² | 144 m² | +25 m² +21% | 2021 |
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| 39, Heathfield Road562 m away | 66 m² | 91 m² | +25 m² +38% | 2018 |
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| 99d, Albemarle Road931 m away | 113 m² | 138 m² | +25 m² +22% | 2009 |
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| 15, Recreation Road785 m away | 74 m² | 98 m² | +24 m² +32% | 2023 |
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| 39, Park End490 m away | 88 m² | 112 m² | +24 m² +27% | 2022 |
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| 91, Park End406 m away | 87 m² | 111 m² | +24 m² +28% | 2019 |
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| 60, Hope Park574 m away | 65 m² | 89 m² | +24 m² +37% | 2018 |
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| 6, River Park Gardens569 m away | 66 m² | 90 m² | +24 m² +36% | 2016 |
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| Flat 39, Blyth Wood Park, 20, Blyth Road626 m away | 147 m² | 171 m² | +24 m² +16% | 2014 |
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| 43, Park Avenue898 m away | 124 m² | 147 m² | +23 m² +19% | 2021 |
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| 48, Recreation Road769 m away | 62 m² | 85 m² | +23 m² +37% | 2019 |
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| Flat 7, Robins Court, 77, Bromley Road969 m away | 97 m² | 120 m² | +23 m² +24% | 2017 |
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| 12, Hawkshead Close267 m away | 81 m² | 104 m² | +23 m² +28% | 2014 |
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| 28, Heathfield Road494 m away | 91 m² | 113 m² | +22 m² +24% | 2024 |
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| 6, Ravensmead Road519 m away | 96 m² | 118 m² | +22 m² +23% | 2018 |
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| 6, Glebe Road968 m away | 83 m² | 105 m² | +22 m² +27% | 2014 |
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| 33, Martins Road848 m away | 75 m² | 97 m² | +22 m² +29% | 2013 |
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| 83a, Foxgrove Road968 m away | 102 m² | 123 m² | +21 m² +21% | 2026 |
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| Flat 3, 220, Bromley Road814 m away | 102 m² | 123 m² | +21 m² +21% | 2025 |
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| Flat 2, Blyth Wood Park, 20, Blyth Road626 m away | 89 m² | 110 m² | +21 m² +24% | 2021 |
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| 10, Bromley Hill964 m away | 37 m² | 58 m² | +21 m² +57% | 2019 |
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| 16, Ullswater Close414 m away | 88 m² | 108 m² | +20 m² +23% | 2026 |
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| Flat 3, 30, Hammelton Road753 m away | 56 m² | 76 m² | +20 m² +36% | 2024 |
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| 101, Highland Road413 m away | 89 m² | 109 m² | +20 m² +22% | 2021 |
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| 16, Hammelton Road753 m away | 89 m² | 109 m² | +20 m² +22% | 2021 |
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| 13, Spencer Road243 m away | 105 m² | 125 m² | +20 m² +19% | 2020 |
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| Flat 11, Mavery Court, Grasmere Road296 m away | 51 m² | 71 m² | +20 m² +39% | 2018 |
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| 40, Coniston Road755 m away | 115 m² | 135 m² | +20 m² +17% | 2016 |
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| 36, Bromley Hill964 m away | 76 m² | 96 m² | +20 m² +26% | 2014 |
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| 1a, Hazelhurst953 m away | 60 m² | 79 m² | +19 m² +32% | 2022 |
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| 38, Arcus Road878 m away | 81 m² | 100 m² | +19 m² +23% | 2021 |
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| 50, Madeira Avenue293 m away | 123 m² | 142 m² | +19 m² +15% | 2020 |
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| 4, Chart Close536 m away | 115 m² | 134 m² | +19 m² +17% | 2019 |
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| Flat 3, Foxleas Court, 4, Spencer Road282 m away | 52 m² | 71 m² | +19 m² +37% | 2017 |
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| 85, Calmont Road592 m away | 89 m² | 108 m² | +19 m² +21% | 2016 |
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| 17, Downs Hill539 m away | 116 m² | 134 m² | +18 m² +16% | 2026 |
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| 28, Morgan Road724 m away | 39 m² | 57 m² | +18 m² +46% | 2026 |
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| 4, Garden Court, Oaklands Road309 m away | 111 m² | 129 m² | +18 m² +16% | 2025 |
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| 70, Howard Road697 m away | 82 m² | 100 m² | +18 m² +22% | 2025 |
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| 11, The Glen818 m away | 100 m² | 118 m² | +18 m² +18% | 2025 |
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| 4, Shortlands Road948 m away | 110 m² | 128 m² | +18 m² +16% | 2025 |
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| 75, Park End406 m away | 64 m² | 82 m² | +18 m² +28% | 2024 |
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| 31a, Highland Road413 m away | 81 m² | 99 m² | +18 m² +22% | 2023 |
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| 9, Bracken Hill Lane588 m away | 96 m² | 114 m² | +18 m² +19% | 2021 |
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| 26c, Hammelton Road753 m away | 59 m² | 77 m² | +18 m² +31% | 2019 |
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| 11, Bracken Hill Lane588 m away | 97 m² | 115 m² | +18 m² +19% | 2016 |
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| 19, Park End490 m away | 68 m² | 85 m² | +17 m² +25% | 2026 |
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| 35, College Road824 m away | 78 m² | 95 m² | +17 m² +22% | 2025 |
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| 32, Fairfield Road798 m away | 84 m² | 101 m² | +17 m² +20% | 2024 |
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| 48a, Alexandra Crescent846 m away | 106 m² | 123 m² | +17 m² +16% | 2023 |
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| 17, Hawkshead Close267 m away | 96 m² | 113 m² | +17 m² +18% | 2022 |
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| 28, Bromley Avenue111 m away | 111 m² | 128 m² | +17 m² +15% | 2021 |
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| 16, West Oak798 m away | 80 m² | 97 m² | +17 m² +21% | 2021 |
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| Flat 4, St James Court, Edison Road972 m away | 72 m² | 89 m² | +17 m² +24% | 2020 |
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| 7, Glebe Road968 m away | 51 m² | 68 m² | +17 m² +33% | 2015 |
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| 18, Shortlands Gardens629 m away | 77 m² | 94 m² | +17 m² +22% | 2012 |
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| 42, Hope Park574 m away | 64 m² | 81 m² | +17 m² +27% | 2011 |
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| Flat 1, 47, Howard Road697 m away | 47 m² | 63 m² | +16 m² +34% | 2023 |
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| Flat 3, 5, Cambridge Road983 m away | 56 m² | 72 m² | +16 m² +29% | 2023 |
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| 12, Ullswater Close414 m away | 84 m² | 100 m² | +16 m² +19% | 2022 |
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| Flat 4, Ibis Court, 135, Albemarle Road690 m away | 62 m² | 78 m² | +16 m² +26% | 2022 |
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| Flat 1, 34, College Road858 m away | 73 m² | 88 m² | +15 m² +21% | 2026 |
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| 36, Howard Road697 m away | 75 m² | 90 m² | +15 m² +20% | 2024 |
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| Flat 5, Redlands Court, 21, London Lane509 m away | 60 m² | 75 m² | +15 m² +25% | 2020 |
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| 125, Coniston Road488 m away | 81 m² | 96 m² | +15 m² +19% | 2019 |
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| 1, Ravendale, Spencer Road327 m away | 61 m² | 76 m² | +15 m² +25% | 2014 |
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| Flat 10, Maplehurst, 45, Park Hill Road764 m away | 55 m² | 70 m² | +15 m² +27% | 2014 |
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| Flat 6, 57 - 59, London Lane836 m away | 73 m² | 88 m² | +15 m² +21% | 2011 |
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