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 DA15 9NN
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 |
|---|---|---|---|---|
| 35, The Drive772 m away | 106 m² | 229 m² | +123 m² +116% | 2023 |
| 45, Sandhurst Road830 m away | 84 m² | 198 m² | +114 m² +136% | 2019 |
| 437, Blackfen Road266 m away | 116 m² | 217 m² | +101 m² +87% | 2019 |
| 22, The Drive626 m away | 91 m² | 179 m² | +88 m² +97% | 2020 |
| 1, Park Mead333 m away | 75 m² | 162 m² | +87 m² +116% | 2026 |
| 30, Brasted Close937 m away | 81 m² | 163 m² | +82 m² +101% | 2023 |
| 57, Harcourt Avenue529 m away | 53 m² | 132 m² | +79 m² +149% | 2014 |
| Campion Cottage, Woodside Lane989 m away | 87 m² | 161 m² | +74 m² +85% | 2020 |
| 22, Radnor Avenue383 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.
| 70 m² |
| 142 m² |
| +72 m² +103% |
| 2025 |
| 12, Dene Avenue783 m away | 105 m² | 174 m² | +69 m² +66% | 2021 |
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| 1, Brook Lane832 m away | 89 m² | 156 m² | +67 m² +75% | 2022 |
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| 63, Penhill Road634 m away | 106 m² | 172 m² | +66 m² +62% | 2025 |
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| 133, Danson Road690 m away | 153 m² | 219 m² | +66 m² +43% | 2025 |
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| 149, Rowley Avenue615 m away | 84 m² | 149 m² | +65 m² +77% | 2026 |
|---|
| 2, Albany Close944 m away | 74 m² | 139 m² | +65 m² +88% | 2020 |
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| 2, Penshurst Avenue496 m away | 51 m² | 116 m² | +65 m² +127% | 2011 |
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| 14, Albany Close944 m away | 70 m² | 134 m² | +64 m² +91% | 2019 |
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| 102, Blendon Road935 m away | 112 m² | 175 m² | +63 m² +56% | 2015 |
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| 190, Rowley Avenue664 m away | 88 m² | 150 m² | +62 m² +70% | 2020 |
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| 28, Beech Avenue900 m away | 86 m² | 147 m² | +61 m² +71% | 2020 |
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| 351, Blackfen Road224 m away | 162 m² | 221 m² | +59 m² +36% | 2013 |
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| 379, Blackfen Road224 m away | 111 m² | 169 m² | +58 m² +52% | 2018 |
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| 29, Montrose Avenue811 m away | 129 m² | 186 m² | +57 m² +44% | 2023 |
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| 46, Elmcroft Avenue977 m away | 81 m² | 138 m² | +57 m² +70% | 2011 |
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| 33, Cavendish Avenue816 m away | 93 m² | 149 m² | +56 m² +60% | 2024 |
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| 57, Ingleton Avenue625 m away | 59 m² | 115 m² | +56 m² +95% | 2023 |
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| 117, Penshurst Avenue524 m away | 58 m² | 114 m² | +56 m² +97% | 2021 |
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| 92, Wellington Avenue709 m away | 71 m² | 127 m² | +56 m² +79% | 2021 |
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| 10, Groombridge Close594 m away | 78 m² | 133 m² | +55 m² +71% | 2026 |
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| 298, Burnt Oak Lane797 m away | 51 m² | 106 m² | +55 m² +108% | 2019 |
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| 15, Wendover Way828 m away | 58 m² | 112 m² | +54 m² +93% | 2024 |
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| 64, Tyrrell Avenue448 m away | 69 m² | 123 m² | +54 m² +78% | 2023 |
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| 170, Sherwood Park Avenue327 m away | 63 m² | 115 m² | +52 m² +83% | 2021 |
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| 49, Cowper Close737 m away | 63 m² | 115 m² | +52 m² +83% | 2018 |
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| 29, Lyndon Avenue810 m away | 52 m² | 102 m² | +50 m² +96% | 2022 |
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| 13, Cavendish Avenue816 m away | 94 m² | 144 m² | +50 m² +53% | 2020 |
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| 294, Westwood Lane841 m away | 85 m² | 134 m² | +49 m² +58% | 2018 |
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| 128, Radnor Avenue542 m away | 89 m² | 137 m² | +48 m² +54% | 2025 |
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| 2a, Burns Avenue421 m away | 94 m² | 141 m² | +47 m² +50% | 2026 |
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| 10, Brasted Close937 m away | 105 m² | 152 m² | +47 m² +45% | 2023 |
|---|
| 3, Cedar Grove696 m away | 94 m² | 141 m² | +47 m² +50% | 2021 |
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| 131, Oakley Park711 m away | 60 m² | 106 m² | +46 m² +77% | 2025 |
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| 25, Somerhill Avenue731 m away | 91 m² | 137 m² | +46 m² +51% | 2022 |
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| 30, Albany Close944 m away | 75 m² | 121 m² | +46 m² +61% | 2019 |
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| 141, Oakley Park711 m away | 92 m² | 138 m² | +46 m² +50% | 2018 |
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| 5, Lyndon Avenue810 m away | 64 m² | 110 m² | +46 m² +72% | 2015 |
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| 197, Ramillies Road585 m away | 96 m² | 141 m² | +45 m² +47% | 2021 |
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| 73, Birch Grove936 m away | 108 m² | 152 m² | +44 m² +41% | 2026 |
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| 51, Cowper Close737 m away | 84 m² | 128 m² | +44 m² +52% | 2025 |
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| 4, Sandhurst Road830 m away | 184 m² | 227 m² | +43 m² +23% | 2024 |
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| 47, Radnor Avenue367 m away | 92 m² | 135 m² | +43 m² +47% | 2014 |
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| 13, Rowley Avenue716 m away | 99 m² | 141 m² | +42 m² +42% | 2020 |
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| 9, Sycamore Avenue910 m away | 79 m² | 121 m² | +42 m² +53% | 2020 |
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| 35, Albany Close944 m away | 51 m² | 93 m² | +42 m² +82% | 2014 |
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| 33, Margaret Road952 m away | 89 m² | 130 m² | +41 m² +46% | 2025 |
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| 16, Meadow View502 m away | 77 m² | 118 m² | +41 m² +53% | 2021 |
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| 99, Ramillies Road317 m away | 66 m² | 107 m² | +41 m² +62% | 2020 |
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| 36, Brasted Close937 m away | 100 m² | 141 m² | +41 m² +41% | 2012 |
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| 46, Sycamore Avenue910 m away | 72 m² | 112 m² | +40 m² +56% | 2026 |
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| 52, Cowper Close737 m away | 114 m² | 154 m² | +40 m² +35% | 2024 |
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| 47, Beechway890 m away | 92 m² | 132 m² | +40 m² +43% | 2024 |
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| 6, Ramillies Road257 m away | 58 m² | 98 m² | +40 m² +69% | 2023 |
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| 28, Wellington Avenue683 m away | 75 m² | 115 m² | +40 m² +53% | 2023 |
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| 183, Penhill Road943 m away | 101 m² | 139 m² | +38 m² +38% | 2023 |
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| 31, Montrose Avenue811 m away | 101 m² | 139 m² | +38 m² +38% | 2017 |
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| 48, Lyndon Avenue836 m away | 69 m² | 106 m² | +37 m² +54% | 2026 |
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| 77, Ingleton Avenue625 m away | 60 m² | 97 m² | +37 m² +62% | 2022 |
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| 5, Elmcroft Avenue935 m away | 80 m² | 117 m² | +37 m² +46% | 2022 |
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| 111, Blendon Road636 m away | 139 m² | 176 m² | +37 m² +27% | 2015 |
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| 50, Ramillies Road257 m away | 66 m² | 102 m² | +36 m² +55% | 2019 |
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| 42, Park Mead153 m away | 72 m² | 107 m² | +35 m² +49% | 2026 |
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| 300, Burnt Oak Lane797 m away | 58 m² | 93 m² | +35 m² +60% | 2026 |
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| 36, Wellington Avenue683 m away | 65 m² | 100 m² | +35 m² +54% | 2021 |
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| 79, Birch Grove936 m away | 67 m² | 102 m² | +35 m² +52% | 2019 |
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| 46, The Drive626 m away | 138 m² | 173 m² | +35 m² +25% | 2013 |
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| 484, Blackfen Road279 m away | 75 m² | 109 m² | +34 m² +45% | 2023 |
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| 64, Elmcroft Avenue977 m away | 89 m² | 122 m² | +33 m² +37% | 2025 |
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| 11, Meadow View502 m away | 146 m² | 179 m² | +33 m² +23% | 2023 |
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| 49, Beechway890 m away | 89 m² | 122 m² | +33 m² +37% | 2023 |
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| 49, Ingleton Avenue625 m away | 69 m² | 102 m² | +33 m² +48% | 2018 |
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| 2, Elmcroft Avenue977 m away | 88 m² | 120 m² | +32 m² +36% | 2020 |
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| 16, Birch Grove970 m away | 68 m² | 100 m² | +32 m² +47% | 2015 |
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| 28, Cowper Close737 m away | 100 m² | 131 m² | +31 m² +31% | 2021 |
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| 128, Sherwood Park Avenue335 m away | 64 m² | 95 m² | +31 m² +48% | 2020 |
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| 16, Rowley Avenue716 m away | 94 m² | 125 m² | +31 m² +33% | 2019 |
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| 157, Sutherland Avenue977 m away | 79 m² | 109 m² | +30 m² +38% | 2021 |
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| 17, Birch Grove936 m away | 63 m² | 93 m² | +30 m² +48% | 2017 |
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| 108, Ramillies Road340 m away | 76 m² | 105 m² | +29 m² +38% | 2026 |
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| 85, Danson Road847 m away | 176 m² | 205 m² | +29 m² +16% | 2026 |
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| 38, Ingleton Avenue660 m away | 56 m² | 85 m² | +29 m² +52% | 2020 |
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| 29, Beech Avenue900 m away | 92 m² | 121 m² | +29 m² +32% | 2014 |
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| 109, Rowley Avenue615 m away | 35 m² | 63 m² | +28 m² +80% | 2023 |
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| 131, Sutherland Avenue977 m away | 76 m² | 104 m² | +28 m² +37% | 2021 |
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| 68, Elmcroft Avenue977 m away | 116 m² | 144 m² | +28 m² +24% | 2019 |
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| 1, Wellan Close288 m away | 99 m² | 126 m² | +27 m² +27% | 2026 |
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| 39, Montrose Avenue811 m away | 100 m² | 127 m² | +27 m² +27% | 2025 |
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| 24, Brook Lane832 m away | 104 m² | 131 m² | +27 m² +26% | 2023 |
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| 87, Penshurst Avenue524 m away | 62 m² | 88 m² | +26 m² +42% | 2022 |
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| 171, Burnt Oak Lane698 m away | 132 m² | 157 m² | +25 m² +19% | 2024 |
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| 4, Rochester Close263 m away | 79 m² | 104 m² | +25 m² +32% | 2020 |
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| 33, Portland Avenue547 m away | 72 m² | 97 m² | +25 m² +35% | 2019 |
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| 29, Brook Lane832 m away | 63 m² | 87 m² | +24 m² +38% | 2025 |
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| 6, Sycamore Avenue910 m away | 79 m² | 103 m² | +24 m² +30% | 2024 |
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| 132, Sherwood Park Avenue335 m away | 119 m² | 143 m² | +24 m² +20% | 2022 |
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| 159, Ramillies Road585 m away | 53 m² | 77 m² | +24 m² +45% | 2022 |
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| 8, Penshurst Avenue496 m away | 88 m² | 112 m² | +24 m² +27% | 2020 |
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| 255, Burnt Oak Lane831 m away | 86 m² | 110 m² | +24 m² +28% | 2020 |
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| 240, Sherwood Park Avenue327 m away | 88 m² | 112 m² | +24 m² +27% | 2018 |
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| 81, Sherwood Park Avenue290 m away | 92 m² | 115 m² | +23 m² +25% | 2025 |
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| 19, Westerham Drive223 m away | 61 m² | 84 m² | +23 m² +38% | 2022 |
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| 81, Burns Avenue393 m away | 59 m² | 82 m² | +23 m² +39% | 2021 |
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| 284, Burnt Oak Lane797 m away | 65 m² | 87 m² | +22 m² +34% | 2024 |
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| 35, Beechway890 m away | 93 m² | 115 m² | +22 m² +24% | 2022 |
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| 660, East Rochester Way905 m away | 105 m² | 127 m² | +22 m² +21% | 2012 |
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| 425, Blackfen Road0 m away | 69 m² | 91 m² | +22 m² +32% | 2011 |
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| 175, Blendon Road518 m away | 66 m² | 87 m² | +21 m² +32% | 2024 |
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| 100, Park Mead214 m away | 36 m² | 57 m² | +21 m² +58% | 2021 |
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| 171, Sherwood Park Avenue274 m away | 52 m² | 73 m² | +21 m² +40% | 2021 |
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| 121, Oakley Park711 m away | 91 m² | 112 m² | +21 m² +23% | 2009 |
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| 172, Rowley Avenue656 m away | 63 m² | 83 m² | +20 m² +32% | 2025 |
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| 151, Merlin Road741 m away | 89 m² | 108 m² | +19 m² +21% | 2026 |
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| 81, Blendon Road843 m away | 121 m² | 140 m² | +19 m² +16% | 2026 |
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| 20, Beechway857 m away | 111 m² | 130 m² | +19 m² +17% | 2026 |
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| 120, Sherwood Park Avenue335 m away | 116 m² | 135 m² | +19 m² +16% | 2024 |
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| 108, Burns Avenue350 m away | 65 m² | 84 m² | +19 m² +29% | 2020 |
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| 82, Penhill Road792 m away | 104 m² | 123 m² | +19 m² +18% | 2020 |
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| 54, Wendover Way862 m away | 62 m² | 81 m² | +19 m² +31% | 2015 |
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| 193, Sherwood Park Avenue274 m away | 39 m² | 58 m² | +19 m² +49% | 2011 |
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| 73, Ramillies Road317 m away | 60 m² | 78 m² | +18 m² +30% | 2017 |
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| 56, Oakley Park783 m away | 84 m² | 102 m² | +18 m² +21% | 2013 |
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| 34, Birch Grove970 m away | 90 m² | 107 m² | +17 m² +19% | 2026 |
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| 10, Rochester Close263 m away | 53 m² | 70 m² | +17 m² +32% | 2024 |
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| 233, Yorkland Avenue963 m away | 64 m² | 81 m² | +17 m² +27% | 2020 |
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| 147, Ramillies Road460 m away | 67 m² | 84 m² | +17 m² +25% | 2019 |
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| 19, Ingleton Avenue625 m away | 60 m² | 77 m² | +17 m² +28% | 2014 |
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| 22, Margaret Road981 m away | 100 m² | 116 m² | +16 m² +16% | 2026 |
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| 98, Burns Avenue350 m away | 90 m² | 106 m² | +16 m² +18% | 2024 |
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| 43, Westerham Drive223 m away | 55 m² | 71 m² | +16 m² +29% | 2022 |
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| 93, Woodside Lane656 m away | 49 m² | 65 m² | +16 m² +33% | 2022 |
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| 64, Radnor Avenue383 m away | 94 m² | 110 m² | +16 m² +17% | 2021 |
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| 89, Rowley Avenue648 m away | 70 m² | 86 m² | +16 m² +23% | 2020 |
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| 46, Ramillies Road257 m away | 63 m² | 79 m² | +16 m² +25% | 2016 |
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| 57, Ashcroft Avenue774 m away | 92 m² | 108 m² | +16 m² +17% | 2015 |
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| 213, Westwood Lane866 m away | 45 m² | 61 m² | +16 m² +36% | 2013 |
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| 492, Blackfen Road279 m away | 82 m² | 97 m² | +15 m² +18% | 2026 |
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| 161, Harcourt Avenue767 m away | 49 m² | 64 m² | +15 m² +31% | 2020 |
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| 38, Penshurst Avenue496 m away | 96 m² | 111 m² | +15 m² +16% | 2014 |
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