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 TW18 1EP
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 |
|---|---|---|---|---|
| 6, Riverfield Road868 m away | 178 m² | 394 m² | +216 m² +121% | 2017 |
| Elmhurst, Penton Hook Road933 m away | 101 m² | 251 m² | +150 m² +149% | 2022 |
| Heathfield, St Pinnock Avenue810 m away | 114 m² | 245 m² | +131 m² +115% | 2022 |
| 19, Thickthorne Lane587 m away | 106 m² | 229 m² | +123 m² +116% | 2019 |
| Jonmari, Cotswold Close786 m away | 110 m² | 229 m² | +119 m² +108% | 2025 |
| Tanglewood, Penton Hall Drive946 m away | 96 m² | 213 m² | +117 m² +122% | 2026 |
| 61, Penton Road855 m away | 98 m² | 207 m² | +109 m² +111% | 2025 |
| 166, Commercial Road238 m away | 92 m² | 195 m² | +103 m² +112% | 2016 |
| 231, Laleham Road |
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.
| 273 m² |
| 371 m² |
| +98 m² +36% |
| 2015 |
| 181, Staines Road869 m away | 77 m² | 171 m² | +94 m² +122% | 2020 |
|---|
| 73, Worple Avenue331 m away | 83 m² | 174 m² | +91 m² +110% | 2026 |
|---|
| 2, Meadow Croft786 m away | 82 m² | 172 m² | +90 m² +110% | 2015 |
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| 179, Staines Road869 m away | 78 m² | 166 m² | +88 m² +113% | 2012 |
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| 7, Penton Road761 m away | 116 m² | 197 m² | +81 m² +70% | 2015 |
|---|
| Ambleside, Penton Hall Drive946 m away | 81 m² | 161 m² | +80 m² +99% | 2022 |
|---|
| 150, Laleham Road536 m away | 153 m² | 233 m² | +80 m² +52% | 2015 |
|---|
| 1, Meadow Croft, Cotswold Close786 m away | 61 m² | 140 m² | +79 m² +130% | 2024 |
|---|
| 6, Avondale Avenue847 m away | 73 m² | 152 m² | +79 m² +108% | 2023 |
|---|
| 49, Laleham Road947 m away | 123 m² | 202 m² | +79 m² +64% | 2023 |
|---|
| Lockholm, Penton Hall Drive946 m away | 87 m² | 166 m² | +79 m² +91% | 2016 |
|---|
| 65, Penton Road855 m away | 94 m² | 170 m² | +76 m² +81% | 2020 |
|---|
| 18, Cherry Tree Avenue309 m away | 68 m² | 142 m² | +74 m² +109% | 2026 |
|---|
| 185, Commercial Road82 m away | 76 m² | 150 m² | +74 m² +97% | 2020 |
|---|
| 4, Lansdowne Road407 m away | 89 m² | 160 m² | +71 m² +80% | 2024 |
|---|
| 16, Hurstdene Avenue146 m away | 104 m² | 174 m² | +70 m² +67% | 2024 |
|---|
| 5, Ash Grove419 m away | 62 m² | 131 m² | +69 m² +111% | 2023 |
|---|
| 8, Berryscroft Road770 m away | 101 m² | 170 m² | +69 m² +68% | 2020 |
|---|
| 37, Avondale Avenue858 m away | 51 m² | 118 m² | +67 m² +131% | 2016 |
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| 15, Pavilion Gardens373 m away | 89 m² | 154 m² | +65 m² +73% | 2026 |
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| 5, Knightsbridge Crescent184 m away | 105 m² | 169 m² | +64 m² +61% | 2025 |
|---|
| 33, Wheatsheaf Lane643 m away | 87 m² | 148 m² | +61 m² +70% | 2019 |
|---|
| 202, Worple Road468 m away | 69 m² | 129 m² | +60 m² +87% | 2025 |
|---|
| 104, Laleham Road660 m away | 105 m² | 165 m² | +60 m² +57% | 2025 |
|---|
| 157, Staines Road987 m away | 142 m² | 202 m² | +60 m² +42% | 2022 |
|---|
| 12, Grosvenor Road369 m away | 90 m² | 150 m² | +60 m² +67% | 2019 |
|---|
| 6, Greenlake Terrace555 m away | 64 m² | 124 m² | +60 m² +94% | 2016 |
|---|
| 22, Meadway Close677 m away | 83 m² | 141 m² | +58 m² +70% | 2026 |
|---|
| 24, Worple Avenue258 m away | 69 m² | 127 m² | +58 m² +84% | 2019 |
|---|
| 26, Templedene Avenue320 m away | 88 m² | 143 m² | +55 m² +63% | 2024 |
|---|
| 8, Knowle Park Avenue431 m away | 132 m² | 186 m² | +54 m² +41% | 2023 |
|---|
| 135, Elizabeth Avenue709 m away | 81 m² | 134 m² | +53 m² +65% | 2020 |
|---|
| 9, Worple Road261 m away | 79 m² | 130 m² | +51 m² +65% | 2025 |
|---|
| 9, The Avenue866 m away | 141 m² | 192 m² | +51 m² +36% | 2024 |
|---|
| 6, Beehive Road915 m away | 47 m² | 98 m² | +51 m² +109% | 2021 |
|---|
| 7, Homestead Road154 m away | 60 m² | 110 m² | +50 m² +83% | 2020 |
|---|
| 20, Duncombe Court, Thames Side943 m away | 92 m² | 142 m² | +50 m² +54% | 2016 |
|---|
| 145, Grosvenor Road342 m away | 101 m² | 150 m² | +49 m² +49% | 2025 |
|---|
| 86, Worple Road73 m away | 62 m² | 111 m² | +49 m² +79% | 2014 |
|---|
| 29, Chestnut Grove434 m away | 68 m² | 117 m² | +49 m² +72% | 2014 |
|---|
| 32, Wheatsheaf Lane712 m away | 90 m² | 136 m² | +46 m² +51% | 2021 |
|---|
| 13, Kingston Crescent956 m away | 96 m² | 140 m² | +44 m² +46% | 2026 |
|---|
| 34, Guildford Street596 m away | 69 m² | 113 m² | +44 m² +64% | 2025 |
|---|
| 44, Gordon Close317 m away | 106 m² | 150 m² | +44 m² +42% | 2024 |
|---|
| 113, Laleham Road802 m away | 134 m² | 178 m² | +44 m² +33% | 2023 |
|---|
| 26, Westbourne Road418 m away | 46 m² | 90 m² | +44 m² +96% | 2020 |
|---|
| 22, Knightsbridge Crescent184 m away | 95 m² | 139 m² | +44 m² +46% | 2015 |
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| Englewick, Penton Hook Road933 m away | 94 m² | 137 m² | +43 m² +46% | 2019 |
|---|
| 44, Hazel Grove359 m away | 70 m² | 113 m² | +43 m² +61% | 2014 |
|---|
| 3, Hurstdene Avenue146 m away | 95 m² | 137 m² | +42 m² +44% | 2026 |
|---|
| 10, Meadway672 m away | 121 m² | 163 m² | +42 m² +35% | 2026 |
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| 30, Penton Hook Road761 m away | 175 m² | 217 m² | +42 m² +24% | 2025 |
|---|
| 2, Stainash Crescent534 m away | 66 m² | 108 m² | +42 m² +64% | 2020 |
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| 30, Warwick Avenue717 m away | 61 m² | 103 m² | +42 m² +69% | 2014 |
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| 12, Cherry Tree Avenue309 m away | 92 m² | 133 m² | +41 m² +45% | 2025 |
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| 97, Strodes Crescent756 m away | 80 m² | 121 m² | +41 m² +51% | 2016 |
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| 25, Carlyle Road685 m away | 114 m² | 154 m² | +40 m² +35% | 2019 |
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| 40, Chestnut Grove419 m away | 74 m² | 114 m² | +40 m² +54% | 2018 |
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| 17, Grosvenor Road411 m away | 84 m² | 123 m² | +39 m² +46% | 2021 |
|---|
| 222, Kingston Road769 m away | 123 m² | 162 m² | +39 m² +32% | 2021 |
|---|
| 5, The Avenue866 m away | 113 m² | 152 m² | +39 m² +35% | 2012 |
|---|
| 172, Commercial Road63 m away | 119 m² | 157 m² | +38 m² +32% | 2024 |
|---|
| 13, Farm Road154 m away | 55 m² | 93 m² | +38 m² +69% | 2024 |
|---|
| 3, Worple Avenue331 m away | 88 m² | 125 m² | +37 m² +42% | 2020 |
|---|
| 26, Farm Road154 m away | 70 m² | 107 m² | +37 m² +53% | 2016 |
|---|
| 17, Parkside Place343 m away | 105 m² | 142 m² | +37 m² +35% | 2016 |
|---|
| 29, Hurstdene Avenue315 m away | 99 m² | 136 m² | +37 m² +37% | 2014 |
|---|
| 87, Worple Avenue331 m away | 79 m² | 115 m² | +36 m² +46% | 2026 |
|---|
| 115, Templedene Avenue510 m away | 91 m² | 127 m² | +36 m² +40% | 2024 |
|---|
| 17, Lansdowne Road407 m away | 91 m² | 127 m² | +36 m² +40% | 2023 |
|---|
| 35, Templedene Avenue332 m away | 81 m² | 117 m² | +36 m² +44% | 2022 |
|---|
| 23, Meadway Close677 m away | 84 m² | 120 m² | +36 m² +43% | 2017 |
|---|
| 19, Penton Road761 m away | 95 m² | 130 m² | +35 m² +37% | 2022 |
|---|
| 1, Penton Road761 m away | 115 m² | 149 m² | +34 m² +30% | 2023 |
|---|
| 9, Ash Grove419 m away | 65 m² | 98 m² | +33 m² +51% | 2020 |
|---|
| 20, Park Avenue678 m away | 107 m² | 139 m² | +32 m² +30% | 2020 |
|---|
| 113, Grosvenor Road342 m away | 116 m² | 147 m² | +31 m² +27% | 2026 |
|---|
| 66, Knightsbridge Crescent184 m away | 95 m² | 126 m² | +31 m² +33% | 2025 |
|---|
| 29, Manor Place787 m away | 44 m² | 74 m² | +30 m² +68% | 2026 |
|---|
| 21, Florence Gardens540 m away | 94 m² | 124 m² | +30 m² +32% | 2025 |
|---|
| 1, Chiltern Close727 m away | 110 m² | 140 m² | +30 m² +27% | 2025 |
|---|
| 80, Edgell Road805 m away | 73 m² | 103 m² | +30 m² +41% | 2023 |
|---|
| 15, Hurstdene Avenue146 m away | 133 m² | 163 m² | +30 m² +23% | 2021 |
|---|
| 22, Worple Road285 m away | 103 m² | 133 m² | +30 m² +29% | 2021 |
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| 45, Pavilion Gardens373 m away | 92 m² | 122 m² | +30 m² +33% | 2019 |
|---|
| 49, Cherry Tree Avenue309 m away | 84 m² | 113 m² | +29 m² +35% | 2025 |
|---|
| 70, Petersfield Road701 m away | 62 m² | 91 m² | +29 m² +47% | 2020 |
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| 67, Lansdowne Road407 m away | 106 m² | 134 m² | +28 m² +26% | 2023 |
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| 34, Ash Grove450 m away | 93 m² | 121 m² | +28 m² +30% | 2023 |
|---|
| 32, Guildford Street596 m away | 86 m² | 113 m² | +27 m² +31% | 2024 |
|---|
| 2, Broadacre755 m away | 113 m² | 140 m² | +27 m² +24% | 2023 |
|---|
| 64a, Avondale Avenue935 m away | 52 m² | 79 m² | +27 m² +52% | 2023 |
|---|
| 152, Laleham Road536 m away | 150 m² | 177 m² | +27 m² +18% | 2019 |
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| 35, Worple Road190 m away | 84 m² | 110 m² | +26 m² +31% | 2025 |
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| 57, Nursery Gardens293 m away | 79 m² | 105 m² | +26 m² +33% | 2025 |
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| 63, Lansdowne Road407 m away | 126 m² | 152 m² | +26 m² +21% | 2025 |
|---|
| 55, Brookside Avenue961 m away | 74 m² | 100 m² | +26 m² +35% | 2023 |
|---|
| 53, Gordon Close280 m away | 83 m² | 109 m² | +26 m² +31% | 2021 |
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| 43, Meadway691 m away | 74 m² | 100 m² | +26 m² +35% | 2015 |
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| 58, Templedene Avenue442 m away | 117 m² | 142 m² | +25 m² +21% | 2026 |
|---|
| 10, Murdoch Close858 m away | 74 m² | 99 m² | +25 m² +34% | 2023 |
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| 216, Staines Road635 m away | 129 m² | 154 m² | +25 m² +19% | 2019 |
|---|
| 1, Bramley Close480 m away | 43 m² | 68 m² | +25 m² +58% | 2014 |
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| 131, Grosvenor Road342 m away | 122 m² | 146 m² | +24 m² +20% | 2025 |
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| 20, Worple Road285 m away | 83 m² | 107 m² | +24 m² +29% | 2022 |
|---|
| 52, Knightsbridge Crescent184 m away | 93 m² | 117 m² | +24 m² +26% | 2019 |
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| 77, Gresham Road941 m away | 42 m² | 66 m² | +24 m² +57% | 2017 |
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| 12, Knightsbridge Crescent184 m away | 48 m² | 71 m² | +23 m² +48% | 2026 |
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| 83, Nursery Gardens129 m away | 78 m² | 101 m² | +23 m² +29% | 2025 |
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| 1, Templedene Avenue332 m away | 140 m² | 163 m² | +23 m² +16% | 2022 |
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| 134, Laleham Road581 m away | 95 m² | 118 m² | +23 m² +24% | 2020 |
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| 23, Arnold Road756 m away | 75 m² | 98 m² | +23 m² +31% | 2020 |
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| 9, Guildford Street596 m away | 81 m² | 104 m² | +23 m² +28% | 2014 |
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| 9, Duncombe Court, Thames Side943 m away | 47 m² | 70 m² | +23 m² +49% | 2014 |
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| 97, Grosvenor Road342 m away | 131 m² | 153 m² | +22 m² +17% | 2026 |
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| 48, Parkside Place343 m away | 78 m² | 100 m² | +22 m² +28% | 2026 |
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| 132, Riverbank, Laleham Road780 m away | 68 m² | 90 m² | +22 m² +32% | 2024 |
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| 23, Ruskin Road692 m away | 83 m² | 105 m² | +22 m² +27% | 2021 |
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| 53, Worple Road190 m away | 100 m² | 122 m² | +22 m² +22% | 2014 |
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| 16, Cherry Tree Avenue309 m away | 81 m² | 102 m² | +21 m² +26% | 2025 |
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| 43, Hurstdene Avenue315 m away | 78 m² | 99 m² | +21 m² +27% | 2025 |
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| 12, Lansdowne Road430 m away | 48 m² | 69 m² | +21 m² +44% | 2025 |
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| 73, Penton Road855 m away | 100 m² | 121 m² | +21 m² +21% | 2025 |
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| 160, Worple Road170 m away | 70 m² | 91 m² | +21 m² +30% | 2024 |
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| 31, Riverbank, Laleham Road861 m away | 60 m² | 81 m² | +21 m² +35% | 2023 |
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| 68, Kingston Road968 m away | 118 m² | 139 m² | +21 m² +18% | 2023 |
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| 7, Pavilion Gardens373 m away | 115 m² | 136 m² | +21 m² +18% | 2022 |
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| 54, Nursery Gardens195 m away | 59 m² | 80 m² | +21 m² +36% | 2019 |
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| 72, Brightside Avenue624 m away | 65 m² | 85 m² | +20 m² +31% | 2024 |
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| 50, Avondale Avenue847 m away | 66 m² | 86 m² | +20 m² +30% | 2024 |
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| 13, Gordon Close280 m away | 86 m² | 106 m² | +20 m² +23% | 2023 |
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| 19, Gresham Road790 m away | 122 m² | 142 m² | +20 m² +16% | 2023 |
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| 1, Wessex Terrace928 m away | 87 m² | 107 m² | +20 m² +23% | 2023 |
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| 8, Chiltern Close727 m away | 117 m² | 137 m² | +20 m² +17% | 2021 |
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| 142, Kingston Road394 m away | 51 m² | 71 m² | +20 m² +39% | 2018 |
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| 246a, Staines Road635 m away | 73 m² | 93 m² | +20 m² +27% | 2017 |
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| 109, Strodes Crescent756 m away | 102 m² | 121 m² | +19 m² +19% | 2026 |
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| 127, Elizabeth Avenue709 m away | 119 m² | 138 m² | +19 m² +16% | 2020 |
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| 9, Templedene Avenue332 m away | 88 m² | 107 m² | +19 m² +22% | 2018 |
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| 18, Stuart Way0 m away | 56 m² | 75 m² | +19 m² +34% | 2016 |
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| Flat 3, Houghton, Rookery Road533 m away | 47 m² | 66 m² | +19 m² +40% | 2012 |
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| 56, The Glade181 m away | 93 m² | 111 m² | +18 m² +19% | 2026 |
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| 45, Meadway691 m away | 67 m² | 85 m² | +18 m² +27% | 2026 |
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| 26, Worple Road285 m away | 80 m² | 98 m² | +18 m² +23% | 2025 |
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| 16, Ruskin Road692 m away | 91 m² | 109 m² | +18 m² +20% | 2024 |
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| 29, Florence Gardens540 m away | 75 m² | 93 m² | +18 m² +24% | 2022 |
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| 223, Kingston Road803 m away | 101 m² | 119 m² | +18 m² +18% | 2020 |
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| Flat 5, Houghton, Rookery Road533 m away | 44 m² | 62 m² | +18 m² +41% | 2019 |
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| 186, Commercial Road63 m away | 78 m² | 96 m² | +18 m² +23% | 2017 |
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| 7b, Riverfield Road868 m away | 63 m² | 81 m² | +18 m² +29% | 2013 |
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| 41, Cherry Tree Avenue309 m away | 112 m² | 129 m² | +17 m² +15% | 2023 |
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| 5, Whiteways Court, Pavilion Gardens341 m away | 47 m² | 64 m² | +17 m² +36% | 2022 |
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| 1, Farm Road154 m away | 56 m² | 73 m² | +17 m² +30% | 2021 |
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| 45, Cherry Orchard806 m away | 79 m² | 96 m² | +17 m² +22% | 2020 |
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| 5, Wythegate, Riverside Road976 m away | 56 m² | 73 m² | +17 m² +30% | 2014 |
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| 103, Nursery Gardens129 m away | 75 m² | 91 m² | +16 m² +21% | 2026 |
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| 168, Worple Road170 m away | 90 m² | 106 m² | +16 m² +18% | 2022 |
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| 32, Stainash Crescent534 m away | 74 m² | 90 m² | +16 m² +22% | 2021 |
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| 49, Kenilworth Gardens652 m away | 65 m² | 81 m² | +16 m² +25% | 2019 |
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| Flat 8, Onslow Lodge, Riverside Road976 m away | 40 m² | 56 m² | +16 m² +40% | 2019 |
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| 11, Thickthorne Lane587 m away | 73 m² | 89 m² | +16 m² +22% | 2018 |
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| 38, Brightside Avenue647 m away | 76 m² | 92 m² | +16 m² +21% | 2018 |
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| 40, Edinburgh Drive862 m away | 73 m² | 89 m² | +16 m² +22% | 2014 |
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| 28, The Glade181 m away | 54 m² | 69 m² | +15 m² +28% | 2024 |
|---|
| 39, Chestnut Grove434 m away | 87 m² | 102 m² | +15 m² +17% | 2024 |
|---|
| 10, Broadacre755 m away | 87 m² | 102 m² | +15 m² +17% | 2022 |
|---|
| 202, Staines Road635 m away | 89 m² | 104 m² | +15 m² +17% | 2021 |
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| 5, Hazel Grove331 m away | 99 m² | 114 m² | +15 m² +15% | 2020 |
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| 1, Fenton Avenue564 m away | 58 m² | 73 m² | +15 m² +26% | 2020 |
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| 98, Edgell Road805 m away | 40 m² | 55 m² | +15 m² +38% | 2020 |
|---|
| 24, Garrick Close806 m away | 77 m² | 92 m² | +15 m² +19% | 2018 |
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| 194a, Laleham Road559 m away | 70 m² | 85 m² | +15 m² +21% | 2016 |
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| 9, Brightside Avenue629 m away | 79 m² | 94 m² | +15 m² +19% | 2016 |
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| 19, Duncombe Court, Thames Side943 m away | 77 m² | 92 m² | +15 m² +19% | 2014 |
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