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 9RY
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 Road459 m away | 82 m² | 196 m² | +114 m² +139% | 2021 |
| 171, Hatton Road965 m away | 58 m² | 133 m² | +75 m² +129% | 2025 |
| 8, Richmond Avenue418 m away | 86 m² | 160 m² | +74 m² +86% | 2014 |
| 9, Rosslyn Avenue851 m away | 77 m² | 146 m² | +69 m² +90% | 2026 |
| 18, Cedar Road965 m away | 100 m² | 168 m² | +68 m² +68% | 2026 |
| 92, Shaftesbury Avenue698 m away | 71 m² | 134 m² | +63 m² +89% | 2024 |
| 306, Bedfont Lane191 m away | 83 m² | 145 m² | +62 m² +75% | 2025 |
| 4, Letchworth Avenue0 m away | 72 m² | 131 m² | +59 m² +82% | 2026 |
| 20, Sandycombe Road845 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.
| 99 m² |
| 156 m² |
| +57 m² +58% |
| 2020 |
| 69, Trevithick Close589 m away | 71 m² | 128 m² | +57 m² +80% | 2013 |
|---|
| 19, West Road997 m away | 70 m² | 124 m² | +54 m² +77% | 2018 |
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| 28, Bridlepath Way629 m away | 78 m² | 130 m² | +52 m² +67% | 2020 |
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| 39, Richmond Avenue439 m away | 88 m² | 139 m² | +51 m² +58% | 2025 |
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| 16, Sandycombe Road845 m away | 64 m² | 115 m² | +51 m² +80% | 2012 |
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| 107, Tachbrook Road171 m away | 189 m² | 239 m² | +50 m² +26% | 2023 |
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| 7, Buckingham Avenue879 m away | 50 m² | 100 m² | +50 m² +100% | 2020 |
|---|
| 483b, Staines Road392 m away | 73 m² | 122 m² | +49 m² +67% | 2023 |
|---|
| Flat 2, 55a, Lewin Terrace843 m away | 66 m² | 112 m² | +46 m² +70% | 2018 |
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| 10, Colonial Road366 m away | 100 m² | 146 m² | +46 m² +46% | 2015 |
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| 38, Helen Avenue877 m away | 99 m² | 144 m² | +45 m² +45% | 2021 |
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| 150, Bedfont Lane559 m away | 110 m² | 155 m² | +45 m² +41% | 2015 |
|---|
| 94, Fruen Road273 m away | 80 m² | 124 m² | +44 m² +55% | 2021 |
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| 148a, Staines Road818 m away | 33 m² | 77 m² | +44 m² +133% | 2019 |
|---|
| 177, Hatton Road965 m away | 59 m² | 103 m² | +44 m² +75% | 2013 |
|---|
| 72, Shaftesbury Avenue749 m away | 65 m² | 108 m² | +43 m² +66% | 2025 |
|---|
| 1, East Road882 m away | 64 m² | 106 m² | +42 m² +66% | 2023 |
|---|
| 56, Buckingham Avenue905 m away | 89 m² | 131 m² | +42 m² +47% | 2020 |
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| 249, Westmacott Drive673 m away | 58 m² | 99 m² | +41 m² +71% | 2023 |
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| 41, Cassiobury Avenue150 m away | 85 m² | 125 m² | +40 m² +47% | 2023 |
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| 55, Beech Road707 m away | 94 m² | 133 m² | +39 m² +41% | 2023 |
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| 79, Shaftesbury Avenue673 m away | 89 m² | 128 m² | +39 m² +44% | 2022 |
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| 193, Hatton Road965 m away | 61 m² | 99 m² | +38 m² +62% | 2025 |
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| 154, Staines Road818 m away | 84 m² | 121 m² | +37 m² +44% | 2025 |
|---|
| 47, Tachbrook Road171 m away | 78 m² | 114 m² | +36 m² +46% | 2026 |
|---|
| 17, Buckingham Avenue879 m away | 75 m² | 111 m² | +36 m² +48% | 2025 |
|---|
| 8, Andover Close564 m away | 55 m² | 91 m² | +36 m² +65% | 2014 |
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| 172, Hatton Road938 m away | 36 m² | 72 m² | +36 m² +100% | 2013 |
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| 89, Southville Road597 m away | 74 m² | 109 m² | +35 m² +47% | 2026 |
|---|
| 133, Harlington Road West945 m away | 69 m² | 104 m² | +35 m² +51% | 2026 |
|---|
| 13, West Road997 m away | 69 m² | 104 m² | +35 m² +51% | 2020 |
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| 28, Cassiobury Avenue113 m away | 90 m² | 125 m² | +35 m² +39% | 2013 |
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| 28, Rosslyn Avenue796 m away | 72 m² | 106 m² | +34 m² +47% | 2025 |
|---|
| 7, Tachbrook Road171 m away | 95 m² | 129 m² | +34 m² +36% | 2023 |
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| 85, Burns Avenue550 m away | 82 m² | 116 m² | +34 m² +41% | 2021 |
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| 21, Padbury Close884 m away | 58 m² | 92 m² | +34 m² +59% | 2014 |
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| 110, Northumberland Crescent591 m away | 51 m² | 84 m² | +33 m² +65% | 2014 |
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| 26, Westminster Close613 m away | 58 m² | 91 m² | +33 m² +57% | 2014 |
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| 4, Padbury Close889 m away | 48 m² | 81 m² | +33 m² +69% | 2014 |
|---|
| 183, Northumberland Crescent595 m away | 67 m² | 99 m² | +32 m² +48% | 2024 |
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| 54, Kingston Avenue433 m away | 84 m² | 116 m² | +32 m² +38% | 2023 |
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| 43, New Road663 m away | 66 m² | 98 m² | +32 m² +48% | 2022 |
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| 1, Appleby Gardens789 m away | 67 m² | 99 m² | +32 m² +48% | 2022 |
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| 108a, Hanover Avenue898 m away | 99 m² | 131 m² | +32 m² +32% | 2019 |
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| 42, Helen Avenue877 m away | 80 m² | 110 m² | +30 m² +38% | 2015 |
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| Flat 24, Edith Court, New Road855 m away | 42 m² | 71 m² | +29 m² +69% | 2024 |
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| 33, Gladstone Avenue805 m away | 70 m² | 99 m² | +29 m² +41% | 2020 |
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| 25, Richmond Avenue439 m away | 64 m² | 92 m² | +28 m² +44% | 2026 |
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| Flat 4, 22, Lewin Terrace792 m away | 59 m² | 87 m² | +28 m² +47% | 2024 |
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| 108, Guildford Avenue878 m away | 68 m² | 96 m² | +28 m² +41% | 2022 |
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| 55, Pentelow Gardens570 m away | 69 m² | 97 m² | +28 m² +41% | 2021 |
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| 127a, Harlington Road West945 m away | 41 m² | 69 m² | +28 m² +68% | 2019 |
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| 15, Southern Avenue720 m away | 84 m² | 111 m² | +27 m² +32% | 2024 |
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| Flat E, Riverside Court, 332, Staines Road280 m away | 56 m² | 83 m² | +27 m² +48% | 2014 |
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| 83, Harlington Road West945 m away | 88 m² | 115 m² | +27 m² +31% | 2014 |
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| 51, Pentelow Gardens570 m away | 95 m² | 121 m² | +26 m² +27% | 2026 |
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| 9, Ruskin Avenue328 m away | 80 m² | 106 m² | +26 m² +33% | 2024 |
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| 1, Sandycombe Road845 m away | 91 m² | 117 m² | +26 m² +29% | 2024 |
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| 321, Bedfont Lane251 m away | 87 m² | 113 m² | +26 m² +30% | 2022 |
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| 185, Bedfont Lane484 m away | 128 m² | 154 m² | +26 m² +20% | 2016 |
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| 35, Pentelow Gardens570 m away | 108 m² | 133 m² | +25 m² +23% | 2025 |
|---|
| 25, Imperial Road506 m away | 86 m² | 111 m² | +25 m² +29% | 2021 |
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| 61, Peninsular Close833 m away | 103 m² | 128 m² | +25 m² +24% | 2009 |
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| 6, Northumberland Crescent563 m away | 58 m² | 82 m² | +24 m² +41% | 2025 |
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| 73, Gladstone Avenue805 m away | 70 m² | 94 m² | +24 m² +34% | 2025 |
|---|
| 34, Buckingham Avenue905 m away | 86 m² | 110 m² | +24 m² +28% | 2021 |
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| 34, Oak Way667 m away | 56 m² | 80 m² | +24 m² +43% | 2014 |
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| 260, Westmacott Drive647 m away | 73 m² | 96 m² | +23 m² +32% | 2022 |
|---|
| 4, New Road648 m away | 91 m² | 114 m² | +23 m² +25% | 2021 |
|---|
| 8, Longford Avenue306 m away | 70 m² | 93 m² | +23 m² +33% | 2020 |
|---|
| 98, Fruen Road273 m away | 46 m² | 69 m² | +23 m² +50% | 2015 |
|---|
| 3, North Close908 m away | 70 m² | 93 m² | +23 m² +33% | 2015 |
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| 9, Buckingham Avenue879 m away | 93 m² | 115 m² | +22 m² +24% | 2022 |
|---|
| 24, Clive Road690 m away | 92 m² | 114 m² | +22 m² +24% | 2018 |
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| 32, Grovestile Waye931 m away | 100 m² | 122 m² | +22 m² +22% | 2018 |
|---|
| 15, Trevithick Close589 m away | 51 m² | 73 m² | +22 m² +43% | 2015 |
|---|
| 13, Trevithick Close589 m away | 62 m² | 84 m² | +22 m² +35% | 2015 |
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| 64, Trevithick Close589 m away | 56 m² | 78 m² | +22 m² +39% | 2014 |
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| 49, Pentelow Gardens570 m away | 101 m² | 123 m² | +22 m² +22% | 2013 |
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| 75, Tachbrook Road171 m away | 87 m² | 109 m² | +22 m² +25% | 2012 |
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| 3, Cassiobury Avenue150 m away | 63 m² | 84 m² | +21 m² +33% | 2026 |
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| 30, Imperial Road517 m away | 107 m² | 128 m² | +21 m² +20% | 2025 |
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| 47, Northumberland Crescent529 m away | 49 m² | 70 m² | +21 m² +43% | 2025 |
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| 8, Ashmead Road640 m away | 73 m² | 94 m² | +21 m² +29% | 2024 |
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| 4, Beech Road647 m away | 71 m² | 92 m² | +21 m² +30% | 2023 |
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| Flat 6, 225, Westmacott Drive673 m away | 40 m² | 61 m² | +21 m² +53% | 2021 |
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| Flat B, 388 - 394, Staines Road540 m away | 65 m² | 86 m² | +21 m² +32% | 2014 |
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| 71, Southville Road597 m away | 50 m² | 71 m² | +21 m² +42% | 2011 |
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| 207, Westmacott Drive695 m away | 69 m² | 89 m² | +20 m² +29% | 2026 |
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| 71, Harlington Road West945 m away | 114 m² | 134 m² | +20 m² +18% | 2026 |
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| 9, Kingston Avenue364 m away | 44 m² | 64 m² | +20 m² +45% | 2023 |
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| 9, Elsworth Close849 m away | 58 m² | 78 m² | +20 m² +34% | 2023 |
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| 70, Tachbrook Road197 m away | 91 m² | 111 m² | +20 m² +22% | 2021 |
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| 83, Southville Road597 m away | 68 m² | 88 m² | +20 m² +29% | 2021 |
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| Flat 6, 21, Page Road731 m away | 50 m² | 70 m² | +20 m² +40% | 2020 |
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| 19, Peacock Avenue988 m away | 89 m² | 109 m² | +20 m² +22% | 2014 |
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| 8, Missenden Close676 m away | 60 m² | 80 m² | +20 m² +33% | 2013 |
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| 251a, Staines Road548 m away | 75 m² | 95 m² | +20 m² +27% | 2012 |
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| 64, Page Road758 m away | 47 m² | 67 m² | +20 m² +43% | 2010 |
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| 61, Shaftesbury Avenue756 m away | 84 m² | 103 m² | +19 m² +23% | 2026 |
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| 51, Tachbrook Road171 m away | 76 m² | 95 m² | +19 m² +25% | 2025 |
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| 313, Bedfont Lane251 m away | 69 m² | 88 m² | +19 m² +28% | 2024 |
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| 45, Longford Avenue330 m away | 48 m² | 67 m² | +19 m² +40% | 2024 |
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| 50, Ruskin Avenue328 m away | 74 m² | 93 m² | +19 m² +26% | 2023 |
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| 53, Ruskin Avenue328 m away | 81 m² | 100 m² | +19 m² +23% | 2022 |
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| 534, Staines Road932 m away | 85 m² | 104 m² | +19 m² +22% | 2022 |
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| 53, Trevithick Close589 m away | 46 m² | 65 m² | +19 m² +41% | 2015 |
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| 44, Southville Road324 m away | 95 m² | 113 m² | +18 m² +19% | 2025 |
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| 274, Westmacott Drive647 m away | 72 m² | 90 m² | +18 m² +25% | 2025 |
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| 324, Bedfont Lane191 m away | 71 m² | 89 m² | +18 m² +25% | 2024 |
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| 16, Kendal Close712 m away | 55 m² | 73 m² | +18 m² +33% | 2024 |
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| 112, Guildford Avenue878 m away | 51 m² | 69 m² | +18 m² +35% | 2023 |
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| Flat 7, 19, Page Road731 m away | 59 m² | 77 m² | +18 m² +31% | 2022 |
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| 44, Eldridge Close778 m away | 80 m² | 98 m² | +18 m² +23% | 2022 |
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| 23, Fruen Road251 m away | 95 m² | 113 m² | +18 m² +19% | 2020 |
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| 79, West Road997 m away | 73 m² | 91 m² | +18 m² +25% | 2019 |
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| 51, Helen Avenue920 m away | 84 m² | 102 m² | +18 m² +21% | 2017 |
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| 35, Westminster Close613 m away | 73 m² | 91 m² | +18 m² +25% | 2014 |
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| 268, Westmacott Drive647 m away | 74 m² | 91 m² | +17 m² +23% | 2015 |
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| 495, Staines Road456 m away | 22 m² | 39 m² | +17 m² +77% | 2012 |
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| 93, Harlington Road West945 m away | 103 m² | 119 m² | +16 m² +16% | 2026 |
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| 31, Kingston Avenue364 m away | 63 m² | 79 m² | +16 m² +25% | 2025 |
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| Flat 5, 22, Lewin Terrace792 m away | 47 m² | 63 m² | +16 m² +34% | 2025 |
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| 253, Westmacott Drive673 m away | 86 m² | 102 m² | +16 m² +19% | 2024 |
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| 55, Guildford Avenue915 m away | 77 m² | 93 m² | +16 m² +21% | 2024 |
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| 44, Letchworth Avenue0 m away | 69 m² | 85 m² | +16 m² +23% | 2023 |
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| 264, Westmacott Drive647 m away | 78 m² | 94 m² | +16 m² +21% | 2023 |
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| 27, Shaftesbury Avenue756 m away | 79 m² | 95 m² | +16 m² +20% | 2023 |
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| 13, Warfield Road459 m away | 92 m² | 108 m² | +16 m² +17% | 2021 |
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| 78, Page Road758 m away | 96 m² | 112 m² | +16 m² +17% | 2021 |
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| 26, Southville Road324 m away | 93 m² | 109 m² | +16 m² +17% | 2016 |
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| 278, Westmacott Drive647 m away | 62 m² | 78 m² | +16 m² +26% | 2015 |
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| 103, New Road940 m away | 78 m² | 94 m² | +16 m² +21% | 2015 |
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| 28, Jubilee Way726 m away | 70 m² | 86 m² | +16 m² +23% | 2014 |
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| 68, Kilross Road807 m away | 69 m² | 85 m² | +16 m² +23% | 2014 |
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| 48, Gladstone Avenue823 m away | 67 m² | 83 m² | +16 m² +24% | 2014 |
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| 23, Kilross Road825 m away | 39 m² | 55 m² | +16 m² +41% | 2014 |
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| 2, Missenden Close676 m away | 64 m² | 80 m² | +16 m² +25% | 2013 |
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| 247, Westmacott Drive673 m away | 69 m² | 84 m² | +15 m² +22% | 2026 |
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| 107, Fruen Road269 m away | 95 m² | 110 m² | +15 m² +16% | 2021 |
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| Flat 2, Carlton House, 413 - 419, Staines Road182 m away | 40 m² | 55 m² | +15 m² +38% | 2020 |
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| 264, Bedfont Lane191 m away | 87 m² | 102 m² | +15 m² +17% | 2018 |
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| 127, Northumberland Crescent707 m away | 50 m² | 65 m² | +15 m² +30% | 2016 |
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| 103, Beech Road558 m away | 88 m² | 103 m² | +15 m² +17% | 2015 |
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| 26, Bridlepath Way629 m away | 82 m² | 97 m² | +15 m² +18% | 2013 |
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