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 SE9 3TU
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 |
|---|---|---|---|---|
| 3, Parkhill Road952 m away | 89 m² | 199 m² | +110 m² +124% | 2020 |
| 35, Brownspring Drive708 m away | 81 m² | 184 m² | +103 m² +127% | 2020 |
| 6, Brownspring Drive703 m away | 79 m² | 174 m² | +95 m² +120% | 2021 |
| 49, Harland Avenue910 m away | 80 m² | 172 m² | +92 m² +115% | 2021 |
| 59, Cadwallon Road222 m away | 99 m² | 188 m² | +89 m² +90% | 2024 |
| 65, Southwood Road211 m away | 117 m² | 203 m² | +86 m² +74% | 2019 |
| 106, Imperial Way632 m away | 114 m² | 195 m² | +81 m² +71% | 2021 |
| 93, Montbelle Road839 m away | 96 m² | 177 m² | +81 m² +84% | 2016 |
| 28, Blanmerle Road461 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.
| 81 m² |
| 158 m² |
| +77 m² +95% |
| 2022 |
| 4, Crouch Croft850 m away | 83 m² | 160 m² | +77 m² +93% | 2021 |
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| 18, Clayfarm Road272 m away | 90 m² | 166 m² | +76 m² +84% | 2019 |
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| 29, Cambria Close952 m away | 65 m² | 139 m² | +74 m² +114% | 2026 |
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| 19, Cambria Close952 m away | 76 m² | 150 m² | +74 m² +97% | 2026 |
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| 11, Gravelwood Close688 m away | 86 m² | 160 m² | +74 m² +86% | 2025 |
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| 259, Old Farm Avenue961 m away | 73 m² | 146 m² | +73 m² +100% | 2021 |
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| 36, Telford Road504 m away | 93 m² | 165 m² | +72 m² +77% | 2022 |
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| 7, Gravelwood Close688 m away | 78 m² | 149 m² | +71 m² +91% | 2026 |
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| 109, Domonic Drive879 m away | 80 m² | 151 m² | +71 m² +89% | 2024 |
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| 24, Marechal Niel Avenue851 m away | 79 m² | 149 m² | +70 m² +89% | 2023 |
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| 36, Harland Avenue869 m away | 73 m² | 142 m² | +69 m² +95% | 2022 |
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| 6, Westbrooke Road787 m away | 79 m² | 147 m² | +68 m² +86% | 2024 |
|---|
| 360, Green Lane953 m away | 95 m² | 163 m² | +68 m² +72% | 2013 |
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| 692, Sidcup Road860 m away | 89 m² | 156 m² | +67 m² +75% | 2019 |
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| 321, Main Road868 m away | 64 m² | 131 m² | +67 m² +105% | 2016 |
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| 62, Montbelle Road596 m away | 97 m² | 162 m² | +65 m² +67% | 2023 |
|---|
| 253, Old Farm Avenue961 m away | 54 m² | 119 m² | +65 m² +120% | 2021 |
|---|
| 47, Valliers Wood Road970 m away | 88 m² | 152 m² | +64 m² +73% | 2014 |
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| 34, Tiverton Drive522 m away | 72 m² | 135 m² | +63 m² +88% | 2022 |
|---|
| 57, Gerda Road142 m away | 89 m² | 152 m² | +63 m² +71% | 2021 |
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| 55, Brooklands Avenue831 m away | 125 m² | 187 m² | +62 m² +50% | 2024 |
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| 31, Charldane Road532 m away | 101 m² | 162 m² | +61 m² +60% | 2025 |
|---|
| 57, Harland Avenue910 m away | 88 m² | 148 m² | +60 m² +68% | 2025 |
|---|
| 49, Southwood Road211 m away | 142 m² | 202 m² | +60 m² +42% | 2020 |
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| 377a, Footscray Road293 m away | 63 m² | 122 m² | +59 m² +94% | 2024 |
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| 24, Cambridge Green765 m away | 98 m² | 157 m² | +59 m² +60% | 2020 |
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| 21, Frensham Road565 m away | 96 m² | 154 m² | +58 m² +60% | 2023 |
|---|
| 197, Green Lane672 m away | 91 m² | 146 m² | +55 m² +60% | 2025 |
|---|
| 35, Charldane Road532 m away | 114 m² | 169 m² | +55 m² +48% | 2024 |
|---|
| 16, Castleford Avenue643 m away | 104 m² | 159 m² | +55 m² +53% | 2021 |
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| 117, Harland Avenue707 m away | 110 m² | 164 m² | +54 m² +49% | 2017 |
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| 45, Domonic Drive666 m away | 84 m² | 137 m² | +53 m² +63% | 2012 |
|---|
| 319a, Footscray Road447 m away | 95 m² | 147 m² | +52 m² +55% | 2026 |
|---|
| 5, Cradley Road571 m away | 74 m² | 126 m² | +52 m² +70% | 2021 |
|---|
| 57, Slades Drive779 m away | 65 m² | 116 m² | +51 m² +78% | 2019 |
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| 103, Domonic Drive879 m away | 77 m² | 128 m² | +51 m² +66% | 2015 |
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| 50, Telford Road504 m away | 95 m² | 145 m² | +50 m² +53% | 2021 |
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| 42, Sidewood Road643 m away | 94 m² | 144 m² | +50 m² +53% | 2019 |
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| 671, Sidcup Road855 m away | 103 m² | 152 m² | +49 m² +48% | 2022 |
|---|
| 55, Domonic Drive666 m away | 34 m² | 83 m² | +49 m² +144% | 2018 |
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| 84, Longlands Park Crescent893 m away | 85 m² | 134 m² | +49 m² +58% | 2016 |
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| 50, Valliers Wood Road921 m away | 85 m² | 134 m² | +49 m² +58% | 2015 |
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| 38, Brownspring Drive703 m away | 95 m² | 143 m² | +48 m² +51% | 2025 |
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| 3, Overmead987 m away | 117 m² | 165 m² | +48 m² +41% | 2019 |
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| 15, Sparrows Lane534 m away | 67 m² | 115 m² | +48 m² +72% | 2017 |
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| 62, Gerda Road212 m away | 106 m² | 153 m² | +47 m² +44% | 2026 |
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| 91, Domonic Drive879 m away | 84 m² | 131 m² | +47 m² +56% | 2026 |
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| 60, Green Lane934 m away | 105 m² | 152 m² | +47 m² +45% | 2020 |
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| 67, Longlands Park Crescent990 m away | 82 m² | 128 m² | +46 m² +56% | 2024 |
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| 61, Montbelle Road674 m away | 115 m² | 161 m² | +46 m² +40% | 2022 |
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| 57, Ellison Road781 m away | 85 m² | 131 m² | +46 m² +54% | 2019 |
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| 322, Green Lane790 m away | 144 m² | 189 m² | +45 m² +31% | 2026 |
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| 59, Gerda Road142 m away | 89 m² | 134 m² | +45 m² +51% | 2020 |
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| 44, Montbelle Road596 m away | 101 m² | 146 m² | +45 m² +45% | 2014 |
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| 6, Bernards Court, Ellison Road998 m away | 41 m² | 85 m² | +44 m² +107% | 2024 |
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| 74, Domonic Drive733 m away | 84 m² | 127 m² | +43 m² +51% | 2026 |
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| 194, Footscray Road805 m away | 67 m² | 110 m² | +43 m² +64% | 2021 |
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| 81, Imperial Way860 m away | 75 m² | 117 m² | +42 m² +56% | 2025 |
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| 34, Westbrooke Road787 m away | 91 m² | 133 m² | +42 m² +46% | 2021 |
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| 91, Imperial Way632 m away | 119 m² | 161 m² | +42 m² +35% | 2016 |
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| 26, Mervyn Avenue362 m away | 92 m² | 133 m² | +41 m² +45% | 2022 |
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| 73, Sparrows Lane534 m away | 74 m² | 115 m² | +41 m² +55% | 2019 |
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| 105, Gerda Road293 m away | 86 m² | 127 m² | +41 m² +48% | 2017 |
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| 42, Cadwallon Road259 m away | 95 m² | 136 m² | +41 m² +43% | 2015 |
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| 6, Agaton Road287 m away | 101 m² | 141 m² | +40 m² +40% | 2026 |
|---|
| 38, Charldane Road557 m away | 96 m² | 136 m² | +40 m² +42% | 2018 |
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| 82, Domonic Drive733 m away | 86 m² | 126 m² | +40 m² +47% | 2015 |
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| 15, Avery Hill Road230 m away | 59 m² | 98 m² | +39 m² +66% | 2023 |
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| 22, Felhampton Road670 m away | 96 m² | 135 m² | +39 m² +41% | 2017 |
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| 55, Ellison Road781 m away | 84 m² | 123 m² | +39 m² +46% | 2012 |
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| 54, Telford Road504 m away | 91 m² | 129 m² | +38 m² +42% | 2022 |
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| 796, Sidcup Road529 m away | 110 m² | 148 m² | +38 m² +35% | 2021 |
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| 113, Domonic Drive879 m away | 89 m² | 127 m² | +38 m² +43% | 2021 |
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| 257, Old Farm Avenue961 m away | 85 m² | 123 m² | +38 m² +45% | 2020 |
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| 74, Brooklands Avenue805 m away | 70 m² | 108 m² | +38 m² +54% | 2019 |
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| 6, Dulverton Road551 m away | 94 m² | 131 m² | +37 m² +39% | 2023 |
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| 376, Green Lane953 m away | 144 m² | 181 m² | +37 m² +26% | 2023 |
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| 8, Brentwood Close402 m away | 36 m² | 73 m² | +37 m² +103% | 2022 |
|---|
| 32, Parkview Road600 m away | 85 m² | 122 m² | +37 m² +44% | 2019 |
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| 129, Brooklands Avenue831 m away | 100 m² | 137 m² | +37 m² +37% | 2019 |
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| 2, Brownspring Drive703 m away | 110 m² | 145 m² | +35 m² +32% | 2026 |
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| 77, Brownspring Drive708 m away | 78 m² | 113 m² | +35 m² +45% | 2026 |
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| 43, Gerda Road142 m away | 80 m² | 115 m² | +35 m² +44% | 2025 |
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| 8, Bercta Road114 m away | 148 m² | 183 m² | +35 m² +24% | 2021 |
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| 124, Imperial Way632 m away | 76 m² | 111 m² | +35 m² +46% | 2020 |
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| 11, Green Lane890 m away | 79 m² | 113 m² | +34 m² +43% | 2026 |
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| 689, Sidcup Road855 m away | 122 m² | 156 m² | +34 m² +28% | 2023 |
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| 438, Footscray Road0 m away | 101 m² | 135 m² | +34 m² +34% | 2020 |
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| 20, Sidewood Road643 m away | 96 m² | 130 m² | +34 m² +35% | 2018 |
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| 43, Montbelle Road674 m away | 135 m² | 168 m² | +33 m² +24% | 2026 |
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| 14, Valliers Wood Road921 m away | 88 m² | 121 m² | +33 m² +38% | 2022 |
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| 81, Parkview Road535 m away | 110 m² | 143 m² | +33 m² +30% | 2020 |
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| 41, Marechal Niel Avenue826 m away | 76 m² | 109 m² | +33 m² +43% | 2017 |
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| 37, Sidewood Road686 m away | 95 m² | 127 m² | +32 m² +34% | 2024 |
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| 42, Brownspring Drive703 m away | 117 m² | 149 m² | +32 m² +27% | 2020 |
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| 38, Valliers Wood Road921 m away | 85 m² | 117 m² | +32 m² +38% | 2020 |
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| 192, Footscray Road805 m away | 70 m² | 102 m² | +32 m² +46% | 2019 |
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| 826, Sidcup Road529 m away | 96 m² | 128 m² | +32 m² +33% | 2018 |
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| 15, Brentwood Close402 m away | 72 m² | 104 m² | +32 m² +44% | 2015 |
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| 47, Frensham Road565 m away | 98 m² | 129 m² | +31 m² +32% | 2026 |
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| 402a, Footscray Road0 m away | 63 m² | 94 m² | +31 m² +49% | 2024 |
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| 440, Footscray Road0 m away | 104 m² | 135 m² | +31 m² +30% | 2020 |
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| 287, Old Farm Avenue961 m away | 81 m² | 112 m² | +31 m² +38% | 2017 |
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| 19, Green Lane890 m away | 102 m² | 132 m² | +30 m² +29% | 2019 |
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| 127, Brownspring Drive949 m away | 76 m² | 106 m² | +30 m² +39% | 2016 |
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| 34, Cradley Road571 m away | 96 m² | 125 m² | +29 m² +30% | 2026 |
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| 129, Avery Hill Road613 m away | 117 m² | 146 m² | +29 m² +25% | 2018 |
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| 79, Montbelle Road674 m away | 99 m² | 128 m² | +29 m² +29% | 2016 |
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| 115, Southwood Road509 m away | 102 m² | 130 m² | +28 m² +27% | 2026 |
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| 41, Green Lane890 m away | 84 m² | 112 m² | +28 m² +33% | 2026 |
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| 1, Cadwallon Road222 m away | 109 m² | 137 m² | +28 m² +26% | 2022 |
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| 13, Molescroft500 m away | 95 m² | 123 m² | +28 m² +29% | 2022 |
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| 106, Blanmerle Road657 m away | 84 m² | 112 m² | +28 m² +33% | 2020 |
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| 59, Imperial Way860 m away | 80 m² | 108 m² | +28 m² +35% | 2019 |
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| 14, Ivor Grove514 m away | 100 m² | 128 m² | +28 m² +28% | 2017 |
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| 35, Agaton Road248 m away | 109 m² | 137 m² | +28 m² +26% | 2016 |
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| 53, Merchland Road344 m away | 79 m² | 106 m² | +27 m² +34% | 2024 |
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| 6a, Parkview Road600 m away | 60 m² | 87 m² | +27 m² +45% | 2024 |
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| 92, Imperial Way860 m away | 77 m² | 104 m² | +27 m² +35% | 2021 |
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| 98, Domonic Drive733 m away | 91 m² | 117 m² | +26 m² +29% | 2025 |
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| 22, Cadwallon Road259 m away | 89 m² | 115 m² | +26 m² +29% | 2023 |
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| 18, Alverstone Gardens564 m away | 78 m² | 104 m² | +26 m² +33% | 2023 |
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| 2a, Dulverton Road551 m away | 119 m² | 145 m² | +26 m² +22% | 2021 |
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| 4, Keightley Drive435 m away | 77 m² | 103 m² | +26 m² +34% | 2014 |
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| 47, Sparrows Lane534 m away | 109 m² | 134 m² | +25 m² +23% | 2023 |
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| 361, Old Farm Avenue669 m away | 68 m² | 93 m² | +25 m² +37% | 2019 |
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| 19, Sparrows Lane534 m away | 73 m² | 98 m² | +25 m² +34% | 2018 |
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| 321, Old Farm Avenue669 m away | 64 m² | 89 m² | +25 m² +39% | 2015 |
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| 46, Westbrooke Road787 m away | 95 m² | 119 m² | +24 m² +25% | 2022 |
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| 6, Sparrows Lane556 m away | 125 m² | 149 m² | +24 m² +19% | 2013 |
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| 41, Reventlow Road354 m away | 78 m² | 101 m² | +23 m² +29% | 2026 |
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| 85, Brownspring Drive708 m away | 140 m² | 163 m² | +23 m² +16% | 2026 |
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| 111, Parkview Road535 m away | 49 m² | 71 m² | +22 m² +45% | 2023 |
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| 243, Old Farm Avenue961 m away | 93 m² | 115 m² | +22 m² +24% | 2022 |
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| 28, Stanley Close372 m away | 92 m² | 113 m² | +21 m² +23% | 2025 |
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| 39, Crombie Road838 m away | 95 m² | 116 m² | +21 m² +22% | 2024 |
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| 109, Brownspring Drive949 m away | 83 m² | 104 m² | +21 m² +25% | 2024 |
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| 34, County Gate469 m away | 113 m² | 134 m² | +21 m² +19% | 2023 |
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| 25, Reventlow Road354 m away | 46 m² | 67 m² | +21 m² +46% | 2019 |
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| 55, Brownspring Drive708 m away | 77 m² | 98 m² | +21 m² +27% | 2017 |
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| 33, Westbrooke Road787 m away | 96 m² | 117 m² | +21 m² +22% | 2012 |
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| 15, Oaktree Gardens908 m away | 83 m² | 103 m² | +20 m² +24% | 2024 |
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| 135, Harland Avenue707 m away | 77 m² | 97 m² | +20 m² +26% | 2021 |
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| 20, Broad Lawn977 m away | 100 m² | 120 m² | +20 m² +20% | 2021 |
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| 53, Blanmerle Road452 m away | 79 m² | 99 m² | +20 m² +25% | 2018 |
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| 23, Slades Drive882 m away | 66 m² | 86 m² | +20 m² +30% | 2015 |
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| 19, Crombie Road838 m away | 121 m² | 141 m² | +20 m² +17% | 2014 |
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| 56, Slades Drive779 m away | 120 m² | 139 m² | +19 m² +16% | 2026 |
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| 672, Sidcup Road860 m away | 113 m² | 132 m² | +19 m² +17% | 2022 |
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| 82b, Green Lane854 m away | 45 m² | 64 m² | +19 m² +42% | 2021 |
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| 332, Footscray Road447 m away | 73 m² | 91 m² | +18 m² +25% | 2025 |
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| 86, Green Lane854 m away | 64 m² | 82 m² | +18 m² +28% | 2025 |
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| 25, Gerda Road142 m away | 108 m² | 126 m² | +18 m² +17% | 2021 |
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| 34, Slades Drive779 m away | 64 m² | 82 m² | +18 m² +28% | 2017 |
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| 50, Larchwood Road308 m away | 78 m² | 96 m² | +18 m² +23% | 2011 |
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| 106, Edgehill Road898 m away | 57 m² | 74 m² | +17 m² +30% | 2025 |
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| 323, Old Farm Avenue669 m away | 71 m² | 88 m² | +17 m² +24% | 2023 |
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| 23, Cadwallon Road222 m away | 91 m² | 108 m² | +17 m² +19% | 2022 |
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| 9, Brentwood Close402 m away | 90 m² | 107 m² | +17 m² +19% | 2021 |
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| 132b, Blanmerle Road657 m away | 78 m² | 95 m² | +17 m² +22% | 2021 |
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| 27, Marechal Niel Avenue826 m away | 89 m² | 106 m² | +17 m² +19% | 2021 |
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| 111, Avery Hill Road613 m away | 84 m² | 101 m² | +17 m² +20% | 2016 |
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| 14, Ellison Road869 m away | 89 m² | 105 m² | +16 m² +18% | 2026 |
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| 126, Imperial Way632 m away | 75 m² | 91 m² | +16 m² +21% | 2025 |
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| 40, Lannoy Road383 m away | 60 m² | 76 m² | +16 m² +27% | 2022 |
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| 3, Bernards Court, Ellison Road998 m away | 30 m² | 46 m² | +16 m² +53% | 2022 |
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| 324, Old Farm Avenue630 m away | 93 m² | 109 m² | +16 m² +17% | 2018 |
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| 23, Brooklands Avenue671 m away | 76 m² | 92 m² | +16 m² +21% | 2017 |
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| 5, Brownspring Drive708 m away | 87 m² | 102 m² | +15 m² +17% | 2026 |
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| Flat 1, 79, Southwood Road383 m away | 66 m² | 81 m² | +15 m² +23% | 2021 |
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| Flat 86, Heath Court, Stanley Close392 m away | 45 m² | 60 m² | +15 m² +33% | 2020 |
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| 472a, Footscray Road300 m away | 53 m² | 68 m² | +15 m² +28% | 2014 |
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| 59, Keightley Drive407 m away | 93 m² | 108 m² | +15 m² +16% | 2014 |
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