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 TW14 9XD
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 |
|---|---|---|---|---|
| 9, Warfield Road888 m away | 82 m² | 196 m² | +114 m² +139% | 2021 |
| 11, Clymping Dene880 m away | 135 m² | 221 m² | +86 m² +64% | 2023 |
| 36, Granville Avenue681 m away | 56 m² | 140 m² | +84 m² +150% | 2025 |
| 105, Rochester Avenue686 m away | 69 m² | 149 m² | +80 m² +116% | 2025 |
| 34, Cravan Avenue610 m away | 59 m² | 130 m² | +71 m² +120% | 2026 |
| 9, Rosslyn Avenue955 m away | 77 m² | 146 m² | +69 m² +90% | 2026 |
| 40, Vernon Road733 m away | 71 m² | 135 m² | +64 m² +90% | 2016 |
| 92, Shaftesbury Avenue879 m away | 71 m² | 134 m² | +63 m² +89% | 2024 |
| 306, Bedfont Lane452 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.
| 83 m² |
| 145 m² |
| +62 m² +75% |
| 2025 |
| 4, Letchworth Avenue613 m away | 72 m² | 131 m² | +59 m² +82% | 2026 |
|---|
| 20, Sandycombe Road298 m away | 99 m² | 156 m² | +57 m² +58% | 2020 |
|---|
| 69, Trevithick Close184 m away | 71 m² | 128 m² | +57 m² +80% | 2013 |
|---|
| 13, Vineyard Road945 m away | 51 m² | 106 m² | +55 m² +108% | 2013 |
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| 112, Raleigh Road626 m away | 63 m² | 117 m² | +54 m² +86% | 2016 |
|---|
| 28, Bridlepath Way860 m away | 78 m² | 130 m² | +52 m² +67% | 2020 |
|---|
| 16, Sandycombe Road298 m away | 64 m² | 115 m² | +51 m² +80% | 2012 |
|---|
| 107, Tachbrook Road515 m away | 189 m² | 239 m² | +50 m² +26% | 2023 |
|---|
| 7, Buckingham Avenue905 m away | 50 m² | 100 m² | +50 m² +100% | 2020 |
|---|
| 483b, Staines Road909 m away | 73 m² | 122 m² | +49 m² +67% | 2023 |
|---|
| 50, Queens Road925 m away | 95 m² | 144 m² | +49 m² +52% | 2021 |
|---|
| 45, Queens Road891 m away | 41 m² | 87 m² | +46 m² +112% | 2018 |
|---|
| 51, Percival Road842 m away | 74 m² | 120 m² | +46 m² +62% | 2016 |
|---|
| 10, Colonial Road786 m away | 100 m² | 146 m² | +46 m² +46% | 2015 |
|---|
| 38, Helen Avenue737 m away | 99 m² | 144 m² | +45 m² +45% | 2021 |
|---|
| 150, Bedfont Lane193 m away | 110 m² | 155 m² | +45 m² +41% | 2015 |
|---|
| 20, Southcote Avenue567 m away | 74 m² | 119 m² | +45 m² +61% | 2014 |
|---|
| 2, The Green724 m away | 105 m² | 150 m² | +45 m² +43% | 2013 |
|---|
| 94, Fruen Road422 m away | 80 m² | 124 m² | +44 m² +55% | 2021 |
|---|
| 202, High Street941 m away | 54 m² | 98 m² | +44 m² +81% | 2020 |
|---|
| 72, Shaftesbury Avenue745 m away | 65 m² | 108 m² | +43 m² +66% | 2025 |
|---|
| 56, Buckingham Avenue932 m away | 89 m² | 131 m² | +42 m² +47% | 2020 |
|---|
| 249, Westmacott Drive128 m away | 58 m² | 99 m² | +41 m² +71% | 2023 |
|---|
| 41, Cassiobury Avenue685 m away | 85 m² | 125 m² | +40 m² +47% | 2023 |
|---|
| 42, Queens Road925 m away | 85 m² | 125 m² | +40 m² +47% | 2017 |
|---|
| 55, Beech Road999 m away | 94 m² | 133 m² | +39 m² +41% | 2023 |
|---|
| 79, Shaftesbury Avenue809 m away | 89 m² | 128 m² | +39 m² +44% | 2022 |
|---|
| 47, Tachbrook Road515 m away | 78 m² | 114 m² | +36 m² +46% | 2026 |
|---|
| 17, Buckingham Avenue905 m away | 75 m² | 111 m² | +36 m² +48% | 2025 |
|---|
| 31, Vernon Road774 m away | 74 m² | 110 m² | +36 m² +49% | 2024 |
|---|
| 8, Andover Close102 m away | 55 m² | 91 m² | +36 m² +65% | 2014 |
|---|
| 89, Southville Road649 m away | 74 m² | 109 m² | +35 m² +47% | 2026 |
|---|
| 28, Cassiobury Avenue656 m away | 90 m² | 125 m² | +35 m² +39% | 2013 |
|---|
| 28, Rosslyn Avenue926 m away | 72 m² | 106 m² | +34 m² +47% | 2025 |
|---|
| 7, Tachbrook Road515 m away | 95 m² | 129 m² | +34 m² +36% | 2023 |
|---|
| 85, Burns Avenue838 m away | 82 m² | 116 m² | +34 m² +41% | 2021 |
|---|
| 1, Clymping Dene880 m away | 120 m² | 154 m² | +34 m² +28% | 2016 |
|---|
| 109, High Street880 m away | 101 m² | 134 m² | +33 m² +33% | 2021 |
|---|
| 45, Harlington Road West931 m away | 94 m² | 127 m² | +33 m² +35% | 2020 |
|---|
| 26, Westminster Close0 m away | 58 m² | 91 m² | +33 m² +57% | 2014 |
|---|
| 1, Appleby Gardens461 m away | 67 m² | 99 m² | +32 m² +48% | 2022 |
|---|
| 108a, Hanover Avenue305 m away | 99 m² | 131 m² | +32 m² +32% | 2019 |
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| 15a, Station Parade754 m away | 60 m² | 92 m² | +32 m² +53% | 2015 |
|---|
| 81, Vernon Road778 m away | 74 m² | 105 m² | +31 m² +42% | 2016 |
|---|
| 67, Vernon Road778 m away | 73 m² | 104 m² | +31 m² +42% | 2016 |
|---|
| 17, Charleston Close990 m away | 44 m² | 75 m² | +31 m² +70% | 2016 |
|---|
| 22, Granville Avenue681 m away | 50 m² | 80 m² | +30 m² +60% | 2023 |
|---|
| 142, Raleigh Road626 m away | 75 m² | 105 m² | +30 m² +40% | 2015 |
|---|
| 42, Helen Avenue737 m away | 80 m² | 110 m² | +30 m² +38% | 2015 |
|---|
| 46, Hounslow Road833 m away | 104 m² | 133 m² | +29 m² +28% | 2024 |
|---|
| 63, Rochester Avenue686 m away | 74 m² | 103 m² | +29 m² +39% | 2020 |
|---|
| 33, Gladstone Avenue805 m away | 70 m² | 99 m² | +29 m² +41% | 2020 |
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| 108, Guildford Avenue377 m away | 68 m² | 96 m² | +28 m² +41% | 2022 |
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| 55, Pentelow Gardens941 m away | 69 m² | 97 m² | +28 m² +41% | 2021 |
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| 103a, High Street880 m away | 20 m² | 48 m² | +28 m² +140% | 2018 |
|---|
| 6, Westbourne Road952 m away | 79 m² | 106 m² | +27 m² +34% | 2026 |
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| 15, Southern Avenue174 m away | 84 m² | 111 m² | +27 m² +32% | 2024 |
|---|
| Flat E, Riverside Court, 332, Staines Road880 m away | 56 m² | 83 m² | +27 m² +48% | 2014 |
|---|
| 51, Pentelow Gardens941 m away | 95 m² | 121 m² | +26 m² +27% | 2026 |
|---|
| 1, Sandycombe Road298 m away | 91 m² | 117 m² | +26 m² +29% | 2024 |
|---|
| 83, Hanover Avenue410 m away | 60 m² | 86 m² | +26 m² +43% | 2024 |
|---|
| 9, Ruskin Avenue712 m away | 80 m² | 106 m² | +26 m² +33% | 2024 |
|---|
| 321, Bedfont Lane746 m away | 87 m² | 113 m² | +26 m² +30% | 2022 |
|---|
| 185, Bedfont Lane146 m away | 128 m² | 154 m² | +26 m² +20% | 2016 |
|---|
| 10, Avenue Road858 m away | 73 m² | 99 m² | +26 m² +36% | 2016 |
|---|
| 35, Pentelow Gardens941 m away | 108 m² | 133 m² | +25 m² +23% | 2025 |
|---|
| 205, Rochester Avenue594 m away | 75 m² | 100 m² | +25 m² +33% | 2021 |
|---|
| 25, Imperial Road913 m away | 86 m² | 111 m² | +25 m² +29% | 2021 |
|---|
| 11, Lancing Road706 m away | 94 m² | 119 m² | +25 m² +27% | 2016 |
|---|
| 151, Redford Close778 m away | 26 m² | 51 m² | +25 m² +96% | 2013 |
|---|
| 73, Gladstone Avenue805 m away | 70 m² | 94 m² | +24 m² +34% | 2025 |
|---|
| Flat 67, Azalea House, Bedfont Lane561 m away | 66 m² | 90 m² | +24 m² +36% | 2022 |
|---|
| 34, Buckingham Avenue932 m away | 86 m² | 110 m² | +24 m² +28% | 2021 |
|---|
| 394, Redford Close786 m away | 62 m² | 86 m² | +24 m² +39% | 2020 |
|---|
| 10, Westbourne Road952 m away | 92 m² | 116 m² | +24 m² +26% | 2016 |
|---|
| 34, Oak Way603 m away | 56 m² | 80 m² | +24 m² +43% | 2014 |
|---|
| 260, Westmacott Drive141 m away | 73 m² | 96 m² | +23 m² +32% | 2022 |
|---|
| 38, Guildford Avenue453 m away | 67 m² | 90 m² | +23 m² +34% | 2020 |
|---|
| 8, Longford Avenue917 m away | 70 m² | 93 m² | +23 m² +33% | 2020 |
|---|
| 47, Park Way926 m away | 88 m² | 111 m² | +23 m² +26% | 2016 |
|---|
| 98, Fruen Road422 m away | 46 m² | 69 m² | +23 m² +50% | 2015 |
|---|
| 69, Hanover Avenue410 m away | 70 m² | 92 m² | +22 m² +31% | 2025 |
|---|
| 206, High Street941 m away | 68 m² | 90 m² | +22 m² +32% | 2025 |
|---|
| 9, Buckingham Avenue905 m away | 93 m² | 115 m² | +22 m² +24% | 2022 |
|---|
| 84, Queens Road925 m away | 76 m² | 98 m² | +22 m² +29% | 2022 |
|---|
| Flat 19, Azalea House, Bedfont Lane561 m away | 71 m² | 93 m² | +22 m² +31% | 2020 |
|---|
| 24, Clive Road998 m away | 92 m² | 114 m² | +22 m² +24% | 2018 |
|---|
| 15, Trevithick Close184 m away | 51 m² | 73 m² | +22 m² +43% | 2015 |
|---|
| 13, Trevithick Close184 m away | 62 m² | 84 m² | +22 m² +35% | 2015 |
|---|
| 64, Trevithick Close184 m away | 56 m² | 78 m² | +22 m² +39% | 2014 |
|---|
| 49, Pentelow Gardens941 m away | 101 m² | 123 m² | +22 m² +22% | 2013 |
|---|
| 75, Tachbrook Road515 m away | 87 m² | 109 m² | +22 m² +25% | 2012 |
|---|
| 33, Queens Road891 m away | 70 m² | 92 m² | +22 m² +31% | 2012 |
|---|
| 3, Cassiobury Avenue685 m away | 63 m² | 84 m² | +21 m² +33% | 2026 |
|---|
| 30, Imperial Road880 m away | 107 m² | 128 m² | +21 m² +20% | 2025 |
|---|
| 8, Ashmead Road121 m away | 73 m² | 94 m² | +21 m² +29% | 2024 |
|---|
| 31, Queens Road891 m away | 91 m² | 112 m² | +21 m² +23% | 2024 |
|---|
| 4, Beech Road910 m away | 71 m² | 92 m² | +21 m² +30% | 2023 |
|---|
| 483, Redford Close939 m away | 88 m² | 109 m² | +21 m² +24% | 2023 |
|---|
| Flat 6, 225, Westmacott Drive128 m away | 40 m² | 61 m² | +21 m² +53% | 2021 |
|---|
| 36, Percival Road845 m away | 74 m² | 95 m² | +21 m² +28% | 2016 |
|---|
| 71, Southville Road649 m away | 50 m² | 71 m² | +21 m² +42% | 2011 |
|---|
| 207, Westmacott Drive453 m away | 69 m² | 89 m² | +20 m² +29% | 2026 |
|---|
| Flat 22, Camellia House, Tilley Road477 m away | 64 m² | 84 m² | +20 m² +31% | 2026 |
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| 9, Elsworth Close915 m away | 58 m² | 78 m² | +20 m² +34% | 2023 |
|---|
| 9, Kingston Avenue973 m away | 44 m² | 64 m² | +20 m² +45% | 2023 |
|---|
| 70, Tachbrook Road487 m away | 91 m² | 111 m² | +20 m² +22% | 2021 |
|---|
| 83, Southville Road649 m away | 68 m² | 88 m² | +20 m² +29% | 2021 |
|---|
| 14, Queens Road925 m away | 91 m² | 111 m² | +20 m² +22% | 2021 |
|---|
| Flat 66, Hamlyn House, High Street517 m away | 43 m² | 63 m² | +20 m² +47% | 2016 |
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| 8, Hounslow Road833 m away | 48 m² | 68 m² | +20 m² +42% | 2015 |
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| 8, Missenden Close322 m away | 60 m² | 80 m² | +20 m² +33% | 2013 |
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| 251a, Staines Road873 m away | 75 m² | 95 m² | +20 m² +27% | 2012 |
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| 43, Granville Avenue645 m away | 47 m² | 66 m² | +19 m² +40% | 2026 |
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| 61, Shaftesbury Avenue704 m away | 84 m² | 103 m² | +19 m² +23% | 2026 |
|---|
| 51, Tachbrook Road515 m away | 76 m² | 95 m² | +19 m² +25% | 2025 |
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| 313, Bedfont Lane746 m away | 69 m² | 88 m² | +19 m² +28% | 2024 |
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| 45, Longford Avenue935 m away | 48 m² | 67 m² | +19 m² +40% | 2024 |
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| 50, Ruskin Avenue712 m away | 74 m² | 93 m² | +19 m² +26% | 2023 |
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| 53, Ruskin Avenue712 m away | 81 m² | 100 m² | +19 m² +23% | 2022 |
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| 8, Westbourne Road952 m away | 73 m² | 92 m² | +19 m² +26% | 2016 |
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| 53, Trevithick Close184 m away | 46 m² | 65 m² | +19 m² +41% | 2015 |
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| 159, Redford Close732 m away | 54 m² | 72 m² | +18 m² +33% | 2026 |
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| Flat 9, Mercury House, 59, High Street733 m away | 74 m² | 92 m² | +18 m² +24% | 2026 |
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| 274, Westmacott Drive141 m away | 72 m² | 90 m² | +18 m² +25% | 2025 |
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| 44, Southville Road592 m away | 95 m² | 113 m² | +18 m² +19% | 2025 |
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| 324, Bedfont Lane452 m away | 71 m² | 89 m² | +18 m² +25% | 2024 |
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| 16, Kendal Close465 m away | 55 m² | 73 m² | +18 m² +33% | 2024 |
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| 112, Guildford Avenue377 m away | 51 m² | 69 m² | +18 m² +35% | 2023 |
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| 44, Eldridge Close166 m away | 80 m² | 98 m² | +18 m² +23% | 2022 |
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| 23, Fruen Road374 m away | 95 m² | 113 m² | +18 m² +19% | 2020 |
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| 51, Helen Avenue795 m away | 84 m² | 102 m² | +18 m² +21% | 2017 |
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| 35, Westminster Close0 m away | 73 m² | 91 m² | +18 m² +25% | 2014 |
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| Flat 47, Camellia House, Tilley Road477 m away | 49 m² | 66 m² | +17 m² +35% | 2023 |
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| 375, Redford Close713 m away | 44 m² | 61 m² | +17 m² +39% | 2022 |
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| 24, Queens Road925 m away | 93 m² | 110 m² | +17 m² +18% | 2022 |
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| 94, Guildford Avenue453 m away | 51 m² | 68 m² | +17 m² +33% | 2021 |
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| Flat 12, Hamlyn House, High Street517 m away | 60 m² | 77 m² | +17 m² +28% | 2020 |
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| 268, Westmacott Drive141 m away | 74 m² | 91 m² | +17 m² +23% | 2015 |
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| 495, Staines Road945 m away | 22 m² | 39 m² | +17 m² +77% | 2012 |
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| 31, Kingston Avenue973 m away | 63 m² | 79 m² | +16 m² +25% | 2025 |
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| 253, Westmacott Drive128 m away | 86 m² | 102 m² | +16 m² +19% | 2024 |
|---|
| 55, Guildford Avenue384 m away | 77 m² | 93 m² | +16 m² +21% | 2024 |
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| 58, Raleigh Road801 m away | 55 m² | 71 m² | +16 m² +29% | 2024 |
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| 53, Elmwood Avenue900 m away | 77 m² | 93 m² | +16 m² +21% | 2024 |
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| 48, Cromwell Road966 m away | 97 m² | 113 m² | +16 m² +16% | 2024 |
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| 264, Westmacott Drive141 m away | 78 m² | 94 m² | +16 m² +21% | 2023 |
|---|
| 44, Letchworth Avenue613 m away | 69 m² | 85 m² | +16 m² +23% | 2023 |
|---|
| 27, Shaftesbury Avenue704 m away | 79 m² | 95 m² | +16 m² +20% | 2023 |
|---|
| 13, Warfield Road888 m away | 92 m² | 108 m² | +16 m² +17% | 2021 |
|---|
| 89, Percival Road842 m away | 99 m² | 115 m² | +16 m² +16% | 2020 |
|---|
| 6, Redford Close953 m away | 59 m² | 75 m² | +16 m² +27% | 2019 |
|---|
| 26, Southville Road592 m away | 93 m² | 109 m² | +16 m² +17% | 2016 |
|---|
| 8, Park Way845 m away | 54 m² | 70 m² | +16 m² +30% | 2016 |
|---|
| 278, Westmacott Drive141 m away | 62 m² | 78 m² | +16 m² +26% | 2015 |
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| 28, Jubilee Way158 m away | 70 m² | 86 m² | +16 m² +23% | 2014 |
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| 48, Gladstone Avenue841 m away | 67 m² | 83 m² | +16 m² +24% | 2014 |
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| 23, Kilross Road998 m away | 39 m² | 55 m² | +16 m² +41% | 2014 |
|---|
| 2, Missenden Close322 m away | 64 m² | 80 m² | +16 m² +25% | 2013 |
|---|
| 247, Westmacott Drive128 m away | 69 m² | 84 m² | +15 m² +22% | 2026 |
|---|
| 107, Fruen Road527 m away | 95 m² | 110 m² | +15 m² +16% | 2021 |
|---|
| 60, Bertelli Place845 m away | 84 m² | 99 m² | +15 m² +18% | 2021 |
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| Flat 29, Azalea House, Bedfont Lane561 m away | 72 m² | 87 m² | +15 m² +21% | 2020 |
|---|
| 206, Redford Close690 m away | 43 m² | 58 m² | +15 m² +35% | 2020 |
|---|
| Flat 2, Carlton House, 413 - 419, Staines Road794 m away | 40 m² | 55 m² | +15 m² +38% | 2020 |
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| 264, Bedfont Lane452 m away | 87 m² | 102 m² | +15 m² +17% | 2018 |
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| 5, Vernon Road774 m away | 74 m² | 89 m² | +15 m² +20% | 2016 |
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| 16, Queens Park Gardens957 m away | 87 m² | 102 m² | +15 m² +17% | 2016 |
|---|
| 103, Beech Road857 m away | 88 m² | 103 m² | +15 m² +17% | 2015 |
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| 26, Bridlepath Way860 m away | 82 m² | 97 m² | +15 m² +18% | 2013 |
|---|