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 TW14 9LB
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 |
|---|---|---|---|---|
| 121, Hounslow Road464 m away | 85 m² | 189 m² | +104 m² +122% | 2025 |
| 128, Sparrow Farm Drive999 m away | 68 m² | 168 m² | +100 m² +147% | 2026 |
| 11, Clymping Dene152 m away | 135 m² | 221 m² | +86 m² +64% | 2023 |
| 62, Viola Avenue626 m away | 68 m² | 150 m² | +82 m² +121% | 2023 |
| 117, Hounslow Road464 m away | 61 m² | 134 m² | +73 m² +120% | 2019 |
| 9, Rosslyn Avenue354 m away | 77 m² | 146 m² | +69 m² +90% | 2026 |
| 55, Hanworth Road847 m away | 143 m² | 209 m² | +66 m² +46% | 2022 |
| 186, Hounslow Road703 m away | 72 m² | 138 m² | +66 m² +92% | 2020 |
| 92, Shaftesbury Avenue418 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.
| 71 m² |
| 134 m² |
| +63 m² +89% |
| 2024 |
| 306, Bedfont Lane877 m away | 83 m² | 145 m² | +62 m² +75% | 2025 |
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| 4, Letchworth Avenue877 m away | 72 m² | 131 m² | +59 m² +82% | 2026 |
|---|
| 20, Sandycombe Road605 m away | 99 m² | 156 m² | +57 m² +58% | 2020 |
|---|
| 69, Trevithick Close907 m away | 71 m² | 128 m² | +57 m² +80% | 2013 |
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| 24, Cygnet Avenue911 m away | 90 m² | 144 m² | +54 m² +60% | 2024 |
|---|
| 119, The Drive627 m away | 61 m² | 114 m² | +53 m² +87% | 2022 |
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| 37, The Drive466 m away | 71 m² | 122 m² | +51 m² +72% | 2025 |
|---|
| 115, Carlton Avenue845 m away | 87 m² | 138 m² | +51 m² +59% | 2025 |
|---|
| 16, Sandycombe Road605 m away | 64 m² | 115 m² | +51 m² +80% | 2012 |
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| 107, Tachbrook Road708 m away | 189 m² | 239 m² | +50 m² +26% | 2023 |
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| 7, Buckingham Avenue248 m away | 50 m² | 100 m² | +50 m² +100% | 2020 |
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| 50, Queens Road587 m away | 95 m² | 144 m² | +49 m² +52% | 2021 |
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| 45, Queens Road556 m away | 41 m² | 87 m² | +46 m² +112% | 2018 |
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| 33, Sparrow Farm Drive778 m away | 84 m² | 130 m² | +46 m² +55% | 2014 |
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| 62, Harlington Road East844 m away | 78 m² | 123 m² | +45 m² +58% | 2026 |
|---|
| 38, Helen Avenue0 m away | 99 m² | 144 m² | +45 m² +45% | 2021 |
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| 150, Bedfont Lane554 m away | 110 m² | 155 m² | +45 m² +41% | 2015 |
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| 2, The Green937 m away | 105 m² | 150 m² | +45 m² +43% | 2013 |
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| 94, Fruen Road629 m away | 80 m² | 124 m² | +44 m² +55% | 2021 |
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| 148a, Staines Road549 m away | 33 m² | 77 m² | +44 m² +133% | 2019 |
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| 72, Shaftesbury Avenue185 m away | 65 m² | 108 m² | +43 m² +66% | 2025 |
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| 56, Buckingham Avenue264 m away | 89 m² | 131 m² | +42 m² +47% | 2020 |
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| 249, Westmacott Drive862 m away | 58 m² | 99 m² | +41 m² +71% | 2023 |
|---|
| 31, Durham Road580 m away | 70 m² | 111 m² | +41 m² +59% | 2019 |
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| 41, Cassiobury Avenue805 m away | 85 m² | 125 m² | +40 m² +47% | 2023 |
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| 42, Queens Road587 m away | 85 m² | 125 m² | +40 m² +47% | 2017 |
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| 79, Shaftesbury Avenue356 m away | 89 m² | 128 m² | +39 m² +44% | 2022 |
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| 39, Sparrow Farm Drive778 m away | 74 m² | 112 m² | +38 m² +51% | 2015 |
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| 80, Danesbury Road936 m away | 81 m² | 118 m² | +37 m² +46% | 2026 |
|---|
| 154, Staines Road549 m away | 84 m² | 121 m² | +37 m² +44% | 2025 |
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| 47, Tachbrook Road708 m away | 78 m² | 114 m² | +36 m² +46% | 2026 |
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| 32, Gloucester Road732 m away | 90 m² | 126 m² | +36 m² +40% | 2026 |
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| 17, Buckingham Avenue248 m away | 75 m² | 111 m² | +36 m² +48% | 2025 |
|---|
| 8, Andover Close816 m away | 55 m² | 91 m² | +36 m² +65% | 2014 |
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| 133, Harlington Road West340 m away | 69 m² | 104 m² | +35 m² +51% | 2026 |
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| 94, Durham Road686 m away | 64 m² | 99 m² | +35 m² +55% | 2024 |
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| 102, Carlton Avenue853 m away | 83 m² | 118 m² | +35 m² +42% | 2023 |
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| 28, Cassiobury Avenue813 m away | 90 m² | 125 m² | +35 m² +39% | 2013 |
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| 28, Rosslyn Avenue372 m away | 72 m² | 106 m² | +34 m² +47% | 2025 |
|---|
| 7, Tachbrook Road708 m away | 95 m² | 129 m² | +34 m² +36% | 2023 |
|---|
| 85, Burns Avenue540 m away | 82 m² | 116 m² | +34 m² +41% | 2021 |
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| 1, Clymping Dene152 m away | 120 m² | 154 m² | +34 m² +28% | 2016 |
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| 37, Danesbury Road980 m away | 80 m² | 113 m² | +33 m² +41% | 2026 |
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| 17, Kings Road729 m away | 101 m² | 134 m² | +33 m² +33% | 2023 |
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| 45, Harlington Road West193 m away | 94 m² | 127 m² | +33 m² +35% | 2020 |
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| 159, Sparrow Farm Drive670 m away | 81 m² | 114 m² | +33 m² +41% | 2015 |
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| 149, Field Road343 m away | 55 m² | 88 m² | +33 m² +60% | 2014 |
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| 26, Westminster Close737 m away | 58 m² | 91 m² | +33 m² +57% | 2014 |
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| 108a, Hanover Avenue943 m away | 99 m² | 131 m² | +32 m² +32% | 2019 |
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| 15a, Station Parade303 m away | 60 m² | 92 m² | +32 m² +53% | 2015 |
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| 87, Staines Road571 m away | 89 m² | 120 m² | +31 m² +35% | 2021 |
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| 42, Helen Avenue0 m away | 80 m² | 110 m² | +30 m² +38% | 2015 |
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| 46, Hounslow Road302 m away | 104 m² | 133 m² | +29 m² +28% | 2024 |
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| 31, Beeston Way766 m away | 46 m² | 75 m² | +29 m² +63% | 2021 |
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| 33, Gladstone Avenue186 m away | 70 m² | 99 m² | +29 m² +41% | 2020 |
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| 55, Pentelow Gardens667 m away | 69 m² | 97 m² | +28 m² +41% | 2021 |
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| 127a, Harlington Road West340 m away | 41 m² | 69 m² | +28 m² +68% | 2019 |
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| 15, Southern Avenue618 m away | 84 m² | 111 m² | +27 m² +32% | 2024 |
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| 83, Harlington Road West340 m away | 88 m² | 115 m² | +27 m² +31% | 2014 |
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| 51, Pentelow Gardens667 m away | 95 m² | 121 m² | +26 m² +27% | 2026 |
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| 24, Gloucester Road732 m away | 53 m² | 79 m² | +26 m² +49% | 2026 |
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| 1, Sandycombe Road605 m away | 91 m² | 117 m² | +26 m² +29% | 2024 |
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| 9, Ruskin Avenue649 m away | 80 m² | 106 m² | +26 m² +33% | 2024 |
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| 83, Hanover Avenue989 m away | 60 m² | 86 m² | +26 m² +43% | 2024 |
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| 185, Bedfont Lane665 m away | 128 m² | 154 m² | +26 m² +20% | 2016 |
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| 35, Pentelow Gardens667 m away | 108 m² | 133 m² | +25 m² +23% | 2025 |
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| 23, Sparrow Farm Drive778 m away | 92 m² | 117 m² | +25 m² +27% | 2025 |
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| 93, Hounslow Road464 m away | 40 m² | 65 m² | +25 m² +63% | 2020 |
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| 113, Staines Road571 m away | 33 m² | 58 m² | +25 m² +76% | 2017 |
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| 73, Gladstone Avenue186 m away | 70 m² | 94 m² | +24 m² +34% | 2025 |
|---|
| Flat 67, Azalea House, Bedfont Lane627 m away | 66 m² | 90 m² | +24 m² +36% | 2022 |
|---|
| 34, Buckingham Avenue264 m away | 86 m² | 110 m² | +24 m² +28% | 2021 |
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| 61, Staines Road571 m away | 100 m² | 124 m² | +24 m² +24% | 2014 |
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| Manama, Walsham Road293 m away | 88 m² | 111 m² | +23 m² +26% | 2023 |
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| 260, Westmacott Drive879 m away | 73 m² | 96 m² | +23 m² +32% | 2022 |
|---|
| 22, The Drive453 m away | 49 m² | 72 m² | +23 m² +47% | 2021 |
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| 47, Park Way431 m away | 88 m² | 111 m² | +23 m² +26% | 2016 |
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| 97, The Drive627 m away | 63 m² | 86 m² | +23 m² +37% | 2016 |
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| 98, Fruen Road629 m away | 46 m² | 69 m² | +23 m² +50% | 2015 |
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| 69, Hanover Avenue989 m away | 70 m² | 92 m² | +22 m² +31% | 2025 |
|---|
| 9, Buckingham Avenue248 m away | 93 m² | 115 m² | +22 m² +24% | 2022 |
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| 116, Field Road334 m away | 61 m² | 83 m² | +22 m² +36% | 2022 |
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| 84, Queens Road587 m away | 76 m² | 98 m² | +22 m² +29% | 2022 |
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| Flat 19, Azalea House, Bedfont Lane627 m away | 71 m² | 93 m² | +22 m² +31% | 2020 |
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| 24, Clive Road610 m away | 92 m² | 114 m² | +22 m² +24% | 2018 |
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| 15, Trevithick Close907 m away | 51 m² | 73 m² | +22 m² +43% | 2015 |
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| 13, Trevithick Close907 m away | 62 m² | 84 m² | +22 m² +35% | 2015 |
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| 105, Carlton Avenue845 m away | 95 m² | 117 m² | +22 m² +23% | 2014 |
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| 64, Trevithick Close907 m away | 56 m² | 78 m² | +22 m² +39% | 2014 |
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| 49, Pentelow Gardens667 m away | 101 m² | 123 m² | +22 m² +22% | 2013 |
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| 33, Queens Road556 m away | 70 m² | 92 m² | +22 m² +31% | 2012 |
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| 75, Tachbrook Road708 m away | 87 m² | 109 m² | +22 m² +25% | 2012 |
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| 3, Cassiobury Avenue805 m away | 63 m² | 84 m² | +21 m² +33% | 2026 |
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| 31, Queens Road556 m away | 91 m² | 112 m² | +21 m² +23% | 2024 |
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| 137, Hounslow Road585 m away | 77 m² | 98 m² | +21 m² +27% | 2024 |
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| 8, Ashmead Road623 m away | 73 m² | 94 m² | +21 m² +29% | 2024 |
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| 124, Sparrow Farm Drive999 m away | 87 m² | 108 m² | +21 m² +24% | 2022 |
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| Flat 6, 225, Westmacott Drive862 m away | 40 m² | 61 m² | +21 m² +53% | 2021 |
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| 17, Salisbury Road949 m away | 87 m² | 108 m² | +21 m² +24% | 2020 |
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| 69, Viola Avenue729 m away | 97 m² | 118 m² | +21 m² +22% | 2015 |
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| 71, Harlington Road West340 m away | 114 m² | 134 m² | +20 m² +18% | 2026 |
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| Flat 22, Camellia House, Tilley Road674 m away | 64 m² | 84 m² | +20 m² +31% | 2026 |
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| 19, Hereford Road828 m away | 98 m² | 118 m² | +20 m² +20% | 2026 |
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| 14, Queens Road587 m away | 91 m² | 111 m² | +20 m² +22% | 2021 |
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| 70, Tachbrook Road687 m away | 91 m² | 111 m² | +20 m² +22% | 2021 |
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| 55, Carlton Avenue595 m away | 83 m² | 103 m² | +20 m² +24% | 2019 |
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| Flat 66, Hamlyn House, High Street668 m away | 43 m² | 63 m² | +20 m² +47% | 2016 |
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| 8, Hounslow Road302 m away | 48 m² | 68 m² | +20 m² +42% | 2015 |
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| 132, Field Road334 m away | 41 m² | 61 m² | +20 m² +49% | 2015 |
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| 251a, Staines Road591 m away | 75 m² | 95 m² | +20 m² +27% | 2012 |
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| 61, Shaftesbury Avenue139 m away | 84 m² | 103 m² | +19 m² +23% | 2026 |
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| 51, Tachbrook Road708 m away | 76 m² | 95 m² | +19 m² +25% | 2025 |
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| 50, Ruskin Avenue649 m away | 74 m² | 93 m² | +19 m² +26% | 2023 |
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| 53, Ruskin Avenue649 m away | 81 m² | 100 m² | +19 m² +23% | 2022 |
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| 57, Lansbury Avenue464 m away | 70 m² | 89 m² | +19 m² +27% | 2021 |
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| 117, Sparrow Farm Drive938 m away | 101 m² | 120 m² | +19 m² +19% | 2021 |
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| 53, Trevithick Close907 m away | 46 m² | 65 m² | +19 m² +41% | 2015 |
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| 274, Westmacott Drive879 m away | 72 m² | 90 m² | +18 m² +25% | 2025 |
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| 20, Salisbury Road949 m away | 89 m² | 107 m² | +18 m² +20% | 2025 |
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| 324, Bedfont Lane877 m away | 71 m² | 89 m² | +18 m² +25% | 2024 |
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| 44, Eldridge Close785 m away | 80 m² | 98 m² | +18 m² +23% | 2022 |
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| 23, Fruen Road711 m away | 95 m² | 113 m² | +18 m² +19% | 2020 |
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| 51, Helen Avenue58 m away | 84 m² | 102 m² | +18 m² +21% | 2017 |
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| 35, Westminster Close737 m away | 73 m² | 91 m² | +18 m² +25% | 2014 |
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| 28, Durham Road522 m away | 49 m² | 66 m² | +17 m² +35% | 2025 |
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| 56, Harlington Road East844 m away | 69 m² | 86 m² | +17 m² +25% | 2025 |
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| 12, Danesbury Road936 m away | 79 m² | 96 m² | +17 m² +22% | 2025 |
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| Flat 47, Camellia House, Tilley Road674 m away | 49 m² | 66 m² | +17 m² +35% | 2023 |
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| 24, Queens Road587 m away | 93 m² | 110 m² | +17 m² +18% | 2022 |
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| Flat 12, Hamlyn House, High Street668 m away | 60 m² | 77 m² | +17 m² +28% | 2020 |
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| 268, Westmacott Drive879 m away | 74 m² | 91 m² | +17 m² +23% | 2015 |
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| 93, Harlington Road West340 m away | 103 m² | 119 m² | +16 m² +16% | 2026 |
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| 48, Cromwell Road662 m away | 97 m² | 113 m² | +16 m² +16% | 2024 |
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| 253, Westmacott Drive862 m away | 86 m² | 102 m² | +16 m² +19% | 2024 |
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| 27, Shaftesbury Avenue139 m away | 79 m² | 95 m² | +16 m² +20% | 2023 |
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| 182, Hounslow Road703 m away | 102 m² | 118 m² | +16 m² +16% | 2023 |
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| 44, Letchworth Avenue877 m away | 69 m² | 85 m² | +16 m² +23% | 2023 |
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| 264, Westmacott Drive879 m away | 78 m² | 94 m² | +16 m² +21% | 2023 |
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| 220, Sparrow Farm Drive751 m away | 96 m² | 112 m² | +16 m² +17% | 2019 |
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| 8, Park Way389 m away | 54 m² | 70 m² | +16 m² +30% | 2016 |
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| 278, Westmacott Drive879 m away | 62 m² | 78 m² | +16 m² +26% | 2015 |
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| 48, Gladstone Avenue214 m away | 67 m² | 83 m² | +16 m² +24% | 2014 |
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| 28, Jubilee Way876 m away | 70 m² | 86 m² | +16 m² +23% | 2014 |
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| 126, Durham Road686 m away | 77 m² | 92 m² | +15 m² +19% | 2026 |
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| 247, Westmacott Drive862 m away | 69 m² | 84 m² | +15 m² +22% | 2026 |
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| 107, Fruen Road609 m away | 95 m² | 110 m² | +15 m² +16% | 2021 |
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| 60, Bertelli Place840 m away | 84 m² | 99 m² | +15 m² +18% | 2021 |
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| Flat 29, Azalea House, Bedfont Lane627 m away | 72 m² | 87 m² | +15 m² +21% | 2020 |
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| Flat 2, Carlton House, 413 - 419, Staines Road1000 m away | 40 m² | 55 m² | +15 m² +38% | 2020 |
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| 1, Byward Avenue716 m away | 65 m² | 80 m² | +15 m² +23% | 2019 |
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| 264, Bedfont Lane877 m away | 87 m² | 102 m² | +15 m² +17% | 2018 |
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