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 SA15 1DA
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 |
|---|---|---|---|---|
| 81, Old Castle Road855 m away | 90 m² | 206 m² | +116 m² +129% | 2026 |
| 56, Wern Road554 m away | 59 m² | 146 m² | +87 m² +147% | 2014 |
| 12, Caswell Street347 m away | 88 m² | 167 m² | +79 m² +90% | 2013 |
| 26, Grant Street591 m away | 77 m² | 153 m² | +76 m² +99% | 2013 |
| 4, Clos Yr Ysgol831 m away | 106 m² | 181 m² | +75 m² +71% | 2023 |
| 75, The Mariners945 m away | 54 m² | 128 m² | +74 m² +137% | 2026 |
| 32, Swansea Road902 m away | 64 m² | 137 m² | +73 m² +114% | 2013 |
| 2, Copperworks Road490 m away | 174 m² | 245 m² | +71 m² +41% | 2024 |
| 25, Dillwyn Street103 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.
| 138 m² |
| +70 m² +103% |
| 2024 |
| 29, Nevill Street477 m away | 130 m² | 190 m² | +60 m² +46% | 2024 |
|---|
| 19, Waterloo Street534 m away | 89 m² | 145 m² | +56 m² +63% | 2025 |
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| 62, Brynallt Terrace995 m away | 77 m² | 131 m² | +54 m² +70% | 2022 |
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| 104, New Dock Road681 m away | 94 m² | 142 m² | +48 m² +51% | 2020 |
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| 2, Bryn Place779 m away | 62 m² | 107 m² | +45 m² +73% | 2023 |
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| 11, Richard Street442 m away | 82 m² | 124 m² | +42 m² +51% | 2023 |
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| 20, Glanmor Road529 m away | 80 m² | 122 m² | +42 m² +53% | 2016 |
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| 30, Swansea Road902 m away | 180 m² | 222 m² | +42 m² +23% | 2016 |
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| 6, Bryn Road730 m away | 87 m² | 129 m² | +42 m² +48% | 2015 |
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| 40, Ropewalk Road849 m away | 95 m² | 136 m² | +41 m² +43% | 2016 |
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| 7, Marine Street704 m away | 158 m² | 198 m² | +40 m² +25% | 2026 |
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| 80, Bryn Road730 m away | 81 m² | 120 m² | +39 m² +48% | 2012 |
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| 38, Murray Street541 m away | 53 m² | 91 m² | +38 m² +72% | 2019 |
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| 32, Alban Road864 m away | 73 m² | 111 m² | +38 m² +52% | 2019 |
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| 67, Dillwyn Street103 m away | 91 m² | 129 m² | +38 m² +42% | 2014 |
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| 58, Upper Robinson Street544 m away | 83 m² | 120 m² | +37 m² +45% | 2014 |
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| 9, Nathan Street824 m away | 61 m² | 98 m² | +37 m² +61% | 2013 |
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| 9, Rice Street183 m away | 85 m² | 121 m² | +36 m² +42% | 2025 |
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| 3, Arthur Street363 m away | 76 m² | 112 m² | +36 m² +47% | 2021 |
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| 26, Upper Robinson Street431 m away | 102 m² | 138 m² | +36 m² +35% | 2014 |
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| 3, Elizabeth Street389 m away | 67 m² | 102 m² | +35 m² +52% | 2018 |
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| 1, Westview Terrace135 m away | 96 m² | 131 m² | +35 m² +36% | 2014 |
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| 2, Catherine Street840 m away | 72 m² | 106 m² | +34 m² +47% | 2021 |
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| 20, King Georges Avenue604 m away | 105 m² | 139 m² | +34 m² +32% | 2013 |
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| 3, Coronation Road416 m away | 98 m² | 131 m² | +33 m² +34% | 2011 |
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| 7, Waterloo Street534 m away | 78 m² | 110 m² | +32 m² +41% | 2024 |
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| 85, Llewellyn Street163 m away | 68 m² | 100 m² | +32 m² +47% | 2023 |
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| 61, Glenalla Road939 m away | 107 m² | 139 m² | +32 m² +30% | 2015 |
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| 62, Firth Road592 m away | 69 m² | 101 m² | +32 m² +46% | 2013 |
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| 7a, New Dock Road476 m away | 106 m² | 137 m² | +31 m² +29% | 2021 |
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| 5, Cwrt Elusendy534 m away | 61 m² | 92 m² | +31 m² +51% | 2015 |
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| 71, Penyfan Road839 m away | 78 m² | 109 m² | +31 m² +40% | 2015 |
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| 6, Alban Road864 m away | 105 m² | 136 m² | +31 m² +30% | 2015 |
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| 2, Marble Hall Road667 m away | 72 m² | 102 m² | +30 m² +42% | 2024 |
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| 39, High Street682 m away | 59 m² | 89 m² | +30 m² +51% | 2023 |
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| 7, New Dock Street820 m away | 112 m² | 142 m² | +30 m² +27% | 2016 |
|---|
| 1, Rice Street183 m away | 101 m² | 130 m² | +29 m² +29% | 2019 |
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| 4, Ralph Terrace573 m away | 88 m² | 117 m² | +29 m² +33% | 2013 |
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| 88, Mansel Street151 m away | 38 m² | 66 m² | +28 m² +74% | 2019 |
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| 18, Swansea Road902 m away | 58 m² | 86 m² | +28 m² +48% | 2016 |
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| 5, King Georges Avenue604 m away | 139 m² | 167 m² | +28 m² +20% | 2014 |
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| 33, Catherine Street791 m away | 69 m² | 97 m² | +28 m² +41% | 2014 |
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| 50, Caroline Street879 m away | 66 m² | 94 m² | +28 m² +42% | 2014 |
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| 13, Ralph Street414 m away | 74 m² | 101 m² | +27 m² +36% | 2021 |
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| 8, Inkerman Street493 m away | 50 m² | 77 m² | +27 m² +54% | 2016 |
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| 29, Upper William Street706 m away | 100 m² | 127 m² | +27 m² +27% | 2016 |
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| 30, Westbury Street784 m away | 85 m² | 112 m² | +27 m² +32% | 2014 |
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| 5, Prendergast Street263 m away | 108 m² | 134 m² | +26 m² +24% | 2025 |
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| 30, College Hill750 m away | 98 m² | 124 m² | +26 m² +27% | 2025 |
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| 11, Wern Road547 m away | 78 m² | 104 m² | +26 m² +33% | 2015 |
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| 2, Marsh Street220 m away | 102 m² | 128 m² | +26 m² +25% | 2014 |
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| 56, Nevill Street477 m away | 89 m² | 115 m² | +26 m² +29% | 2014 |
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| 48, Brynmor Road782 m away | 110 m² | 136 m² | +26 m² +24% | 2009 |
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| 20, Railway Place852 m away | 77 m² | 102 m² | +25 m² +32% | 2024 |
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| 10, Marble Hall Road667 m away | 51 m² | 76 m² | +25 m² +49% | 2023 |
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| 36, Elizabeth Street389 m away | 86 m² | 111 m² | +25 m² +29% | 2021 |
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| 30, Cedric Street513 m away | 89 m² | 114 m² | +25 m² +28% | 2019 |
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| 6, Copperworks Road490 m away | 94 m² | 119 m² | +25 m² +27% | 2017 |
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| 15, Ropewalk Road866 m away | 123 m² | 148 m² | +25 m² +20% | 2015 |
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| 18, Richard Street442 m away | 85 m² | 109 m² | +24 m² +28% | 2020 |
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| 1, Christopher Street117 m away | 121 m² | 145 m² | +24 m² +20% | 2019 |
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| 18, Trinity Road451 m away | 109 m² | 132 m² | +23 m² +21% | 2026 |
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| 22, Paddock Street423 m away | 84 m² | 107 m² | +23 m² +27% | 2025 |
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| 11, Walters Road393 m away | 29 m² | 52 m² | +23 m² +79% | 2023 |
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| 3, Highfield Terrace239 m away | 96 m² | 119 m² | +23 m² +24% | 2019 |
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| 65, High Street682 m away | 87 m² | 110 m² | +23 m² +26% | 2015 |
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| 4, Heol Elli683 m away | 87 m² | 110 m² | +23 m² +26% | 2013 |
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| 67, Queen Victoria Road684 m away | 116 m² | 139 m² | +23 m² +20% | 2013 |
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| 14, Clos Yr Ysgol831 m away | 71 m² | 93 m² | +22 m² +31% | 2026 |
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| A home on Coldstream Street951 m away | 115 m² | 137 m² | +22 m² +19% | 2026 |
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| 17, Railway Terrace504 m away | 59 m² | 81 m² | +22 m² +37% | 2023 |
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| 1, Arthur Street363 m away | 93 m² | 115 m² | +22 m² +24% | 2021 |
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| 49, Biddulph Estate973 m away | 70 m² | 92 m² | +22 m² +31% | 2021 |
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| 47, Princess Street814 m away | 93 m² | 115 m² | +22 m² +24% | 2020 |
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| 24, Ann Street367 m away | 82 m² | 104 m² | +22 m² +27% | 2019 |
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| 9, Marsh Street220 m away | 94 m² | 116 m² | +22 m² +23% | 2016 |
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| 99, Station Road280 m away | 53 m² | 75 m² | +22 m² +42% | 2015 |
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| 5, George Street539 m away | 56 m² | 78 m² | +22 m² +39% | 2015 |
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| 12, Ropewalk Road849 m away | 107 m² | 129 m² | +22 m² +21% | 2013 |
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| 68, Albert Street920 m away | 102 m² | 124 m² | +22 m² +22% | 2011 |
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| 40, Elizabeth Street389 m away | 84 m² | 105 m² | +21 m² +25% | 2024 |
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| 32, Pen Y Fon Street604 m away | 69 m² | 90 m² | +21 m² +30% | 2021 |
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| 36, Station Road411 m away | 39 m² | 60 m² | +21 m² +54% | 2020 |
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| 6, Hick Street171 m away | 106 m² | 127 m² | +21 m² +20% | 2014 |
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| 42, Andrew Street948 m away | 66 m² | 87 m² | +21 m² +32% | 2013 |
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| 38, Swansea Road902 m away | 73 m² | 94 m² | +21 m² +29% | 2010 |
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| 78, James Street965 m away | 92 m² | 112 m² | +20 m² +22% | 2025 |
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| 7, Lower Cross Road869 m away | 75 m² | 95 m² | +20 m² +27% | 2020 |
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| 4, Lakefield Road505 m away | 69 m² | 89 m² | +20 m² +29% | 2015 |
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| 22, Glanmor Terrace542 m away | 62 m² | 82 m² | +20 m² +32% | 2015 |
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| 46, New Dock Road456 m away | 76 m² | 96 m² | +20 m² +26% | 2013 |
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| 67, Princess Street814 m away | 114 m² | 133 m² | +19 m² +17% | 2026 |
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| 2, Rice Street183 m away | 79 m² | 98 m² | +19 m² +24% | 2023 |
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| 16, Trinity Road451 m away | 109 m² | 128 m² | +19 m² +17% | 2020 |
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| 73, Llewellyn Street163 m away | 79 m² | 98 m² | +19 m² +24% | 2016 |
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| 23, Russell Street261 m away | 79 m² | 98 m² | +19 m² +24% | 2015 |
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| 50, Marble Hall Road667 m away | 71 m² | 90 m² | +19 m² +27% | 2014 |
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| 1, George Street539 m away | 95 m² | 114 m² | +19 m² +20% | 2013 |
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| 21, Stanley Street728 m away | 77 m² | 96 m² | +19 m² +25% | 2013 |
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| 63, Glenalla Road939 m away | 90 m² | 108 m² | +18 m² +20% | 2026 |
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| 47, Coronation Road416 m away | 74 m² | 92 m² | +18 m² +24% | 2023 |
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| 16, Clos Yr Ysgol831 m away | 106 m² | 124 m² | +18 m² +17% | 2023 |
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| 2, George Street539 m away | 119 m² | 137 m² | +18 m² +15% | 2022 |
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| 36, Bigyn Road277 m away | 93 m² | 111 m² | +18 m² +19% | 2015 |
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| 52, Dillwyn Street108 m away | 63 m² | 81 m² | +18 m² +29% | 2014 |
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| 30, Waterloo Street534 m away | 75 m² | 93 m² | +18 m² +24% | 2014 |
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| 2, Arthur Street363 m away | 109 m² | 126 m² | +17 m² +16% | 2026 |
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| 50, Railway Terrace504 m away | 30 m² | 47 m² | +17 m² +57% | 2026 |
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| 19, Pencae Terrace946 m away | 82 m² | 99 m² | +17 m² +21% | 2023 |
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| 60, Trinity Road451 m away | 77 m² | 94 m² | +17 m² +22% | 2022 |
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| 34, Pen Y Fon Street604 m away | 65 m² | 82 m² | +17 m² +26% | 2017 |
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| 6, Rice Street183 m away | 81 m² | 98 m² | +17 m² +21% | 2016 |
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| 36, Stafford Street566 m away | 111 m² | 128 m² | +17 m² +15% | 2016 |
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| 34, Marble Hall Road667 m away | 78 m² | 95 m² | +17 m² +22% | 2016 |
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| 2, Amos Street716 m away | 100 m² | 117 m² | +17 m² +17% | 2016 |
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| Loft 19, Pugh Buildings, Cowell Street652 m away | 35 m² | 52 m² | +17 m² +49% | 2015 |
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| 69, Princess Street814 m away | 103 m² | 120 m² | +17 m² +17% | 2014 |
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| 59, Tyisha Road247 m away | 92 m² | 108 m² | +16 m² +17% | 2025 |
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| 8, Ann Street367 m away | 72 m² | 88 m² | +16 m² +22% | 2024 |
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| 27, Brynmor Road791 m away | 85 m² | 101 m² | +16 m² +19% | 2024 |
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| 44, New Dock Street791 m away | 87 m² | 103 m² | +16 m² +18% | 2023 |
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| 10, Pottery Place602 m away | 69 m² | 85 m² | +16 m² +23% | 2021 |
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| 17, Old Castle Road717 m away | 92 m² | 108 m² | +16 m² +17% | 2018 |
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| 5, Robinson Street373 m away | 73 m² | 89 m² | +16 m² +22% | 2015 |
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| 3, Great Western Crescent379 m away | 71 m² | 87 m² | +16 m² +23% | 2014 |
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| 57, Robinson Street388 m away | 77 m² | 93 m² | +16 m² +21% | 2013 |
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| 19, Mansel Street0 m away | 74 m² | 89 m² | +15 m² +20% | 2026 |
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| 14, Andrew Street948 m away | 81 m² | 96 m² | +15 m² +19% | 2025 |
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| Flat 1, Marshfield House, 92, Station Road294 m away | 52 m² | 67 m² | +15 m² +29% | 2023 |
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| 61, Wern Road547 m away | 52 m² | 67 m² | +15 m² +29% | 2023 |
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| 10, Hick Street171 m away | 74 m² | 89 m² | +15 m² +20% | 2022 |
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| 28, Nelson Terrace669 m away | 47 m² | 62 m² | +15 m² +32% | 2018 |
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| 3, Heol Morfa807 m away | 83 m² | 98 m² | +15 m² +18% | 2016 |
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| 22, Bigyn Road335 m away | 100 m² | 115 m² | +15 m² +15% | 2013 |
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| 41, Old Castle Road717 m away | 74 m² | 89 m² | +15 m² +20% | 2013 |
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