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 1NN
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 |
|---|---|---|---|---|
| 98, Felinfoel Road801 m away | 154 m² | 324 m² | +170 m² +110% | 2015 |
| 94, Felinfoel Road801 m away | 199 m² | 306 m² | +107 m² +54% | 2018 |
| 56, Wern Road151 m away | 59 m² | 146 m² | +87 m² +147% | 2014 |
| 20, Goring Road712 m away | 87 m² | 172 m² | +85 m² +98% | 2026 |
| 12, Caswell Street873 m away | 88 m² | 167 m² | +79 m² +90% | 2013 |
| 26, Grant Street845 m away | 77 m² | 153 m² | +76 m² +99% | 2013 |
| 4, Clos Yr Ysgol288 m away | 106 m² | 181 m² | +75 m² +71% | 2023 |
| 32, Swansea Road277 m away | 64 m² | 137 m² | +73 m² +114% | 2013 |
| 25, Dillwyn Street750 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 |
| 19, Waterloo Street788 m away | 89 m² | 145 m² | +56 m² +63% | 2025 |
|---|
| 4, Woodend Road416 m away | 83 m² | 138 m² | +55 m² +66% | 2014 |
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| 62, Brynallt Terrace451 m away | 77 m² | 131 m² | +54 m² +70% | 2022 |
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| 3, Corporation Avenue575 m away | 98 m² | 148 m² | +50 m² +51% | 2021 |
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| 36, Station Road760 m away | 39 m² | 87 m² | +48 m² +123% | 2020 |
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| 7, Evans Terrace401 m away | 68 m² | 116 m² | +48 m² +71% | 2015 |
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| 12, Capel Terrace744 m away | 97 m² | 143 m² | +46 m² +47% | 2026 |
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| 2, Woodend Road416 m away | 110 m² | 152 m² | +42 m² +38% | 2024 |
|---|
| 11, Richard Street508 m away | 82 m² | 124 m² | +42 m² +51% | 2023 |
|---|
| 30, Swansea Road277 m away | 180 m² | 222 m² | +42 m² +23% | 2016 |
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| Merrivale, Penygaer Road800 m away | 65 m² | 107 m² | +42 m² +65% | 2013 |
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| 46, Gilbert Road652 m away | 102 m² | 143 m² | +41 m² +40% | 2016 |
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| 7, Cysgod Y Llan821 m away | 259 m² | 299 m² | +40 m² +15% | 2011 |
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| 32, Alban Road248 m away | 73 m² | 111 m² | +38 m² +52% | 2019 |
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| 67, Dillwyn Street750 m away | 91 m² | 129 m² | +38 m² +42% | 2014 |
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| 58, Upper Robinson Street209 m away | 83 m² | 120 m² | +37 m² +45% | 2014 |
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| 9, Rice Street725 m away | 85 m² | 121 m² | +36 m² +42% | 2025 |
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| 18, New Road877 m away | 108 m² | 144 m² | +36 m² +33% | 2025 |
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| 3, Arthur Street466 m away | 76 m² | 112 m² | +36 m² +47% | 2021 |
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| 26, Upper Robinson Street364 m away | 102 m² | 138 m² | +36 m² +35% | 2014 |
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| 3, Elizabeth Street370 m away | 67 m² | 102 m² | +35 m² +52% | 2018 |
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| 1, Westview Terrace546 m away | 96 m² | 131 m² | +35 m² +36% | 2014 |
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| 20, King Georges Avenue313 m away | 105 m² | 139 m² | +34 m² +32% | 2013 |
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| 3, Coedcae Uchaf743 m away | 93 m² | 126 m² | +33 m² +35% | 2019 |
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| 3, Coronation Road400 m away | 98 m² | 131 m² | +33 m² +34% | 2011 |
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| 11, Waun Road892 m away | 61 m² | 93 m² | +32 m² +52% | 2025 |
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| 7, Waterloo Street788 m away | 78 m² | 110 m² | +32 m² +41% | 2024 |
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| 85, Llewellyn Street812 m away | 68 m² | 100 m² | +32 m² +47% | 2023 |
|---|
| 36, Thomas Street566 m away | 44 m² | 76 m² | +32 m² +73% | 2022 |
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| 7, Brynhyfryd694 m away | 83 m² | 115 m² | +32 m² +39% | 2016 |
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| 61, Glenalla Road273 m away | 107 m² | 139 m² | +32 m² +30% | 2015 |
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| 62, Firth Road712 m away | 69 m² | 101 m² | +32 m² +46% | 2013 |
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| 5, Cwrt Elusendy153 m away | 61 m² | 92 m² | +31 m² +51% | 2015 |
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| 6, Alban Road248 m away | 105 m² | 136 m² | +31 m² +30% | 2015 |
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| 71, Penyfan Road833 m away | 78 m² | 109 m² | +31 m² +40% | 2015 |
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| 2, Marble Hall Road0 m away | 72 m² | 102 m² | +30 m² +42% | 2024 |
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| 41, New Road995 m away | 192 m² | 221 m² | +29 m² +15% | 2025 |
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| 1, Rice Street725 m away | 101 m² | 130 m² | +29 m² +29% | 2019 |
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| 88, Mansel Street751 m away | 38 m² | 66 m² | +28 m² +74% | 2019 |
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| 18, Swansea Road277 m away | 58 m² | 86 m² | +28 m² +48% | 2016 |
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| 17, Llys Fran952 m away | 79 m² | 107 m² | +28 m² +35% | 2015 |
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| 5, King Georges Avenue313 m away | 139 m² | 167 m² | +28 m² +20% | 2014 |
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| 3, Union Buildings823 m away | 52 m² | 80 m² | +28 m² +54% | 2012 |
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| 13, Ralph Street563 m away | 74 m² | 101 m² | +27 m² +36% | 2021 |
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| 29, Upper William Street165 m away | 100 m² | 127 m² | +27 m² +27% | 2016 |
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| 8, Inkerman Street638 m away | 50 m² | 77 m² | +27 m² +54% | 2016 |
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| 30, College Hill90 m away | 98 m² | 124 m² | +26 m² +27% | 2025 |
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| 5, Prendergast Street405 m away | 108 m² | 134 m² | +26 m² +24% | 2025 |
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| 2, Cae Cotton756 m away | 96 m² | 122 m² | +26 m² +27% | 2023 |
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| 11, Wern Road169 m away | 78 m² | 104 m² | +26 m² +33% | 2015 |
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| 2, Marsh Street868 m away | 102 m² | 128 m² | +26 m² +25% | 2014 |
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| The Mews, 41, Old Road910 m away | 58 m² | 84 m² | +26 m² +45% | 2014 |
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| 10, Marble Hall Road0 m away | 51 m² | 76 m² | +25 m² +49% | 2023 |
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| 36, Elizabeth Street370 m away | 86 m² | 111 m² | +25 m² +29% | 2021 |
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| 30, Cedric Street279 m away | 89 m² | 114 m² | +25 m² +28% | 2019 |
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| 97, James Street309 m away | 102 m² | 127 m² | +25 m² +25% | 2015 |
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| 79, Swansea Road375 m away | 80 m² | 104 m² | +24 m² +30% | 2021 |
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| 10, West End814 m away | 112 m² | 136 m² | +24 m² +21% | 2021 |
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| 18, Richard Street508 m away | 85 m² | 109 m² | +24 m² +28% | 2020 |
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| The Barn, Capel Isaf Road980 m away | 111 m² | 135 m² | +24 m² +22% | 2020 |
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| 1, Christopher Street693 m away | 121 m² | 145 m² | +24 m² +20% | 2019 |
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| 8, Frondeg Terrace791 m away | 86 m² | 110 m² | +24 m² +28% | 2014 |
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| 22, Paddock Street881 m away | 84 m² | 107 m² | +23 m² +27% | 2025 |
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| 11, Walters Road310 m away | 29 m² | 52 m² | +23 m² +79% | 2023 |
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| 33, Frondeg Terrace870 m away | 102 m² | 125 m² | +23 m² +23% | 2023 |
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| 5, Frondeg Terrace791 m away | 68 m² | 91 m² | +23 m² +34% | 2021 |
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| 3, Highfield Terrace671 m away | 96 m² | 119 m² | +23 m² +24% | 2019 |
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| 36, Gelli Deg882 m away | 104 m² | 127 m² | +23 m² +22% | 2016 |
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| 4, Heol Elli394 m away | 87 m² | 110 m² | +23 m² +26% | 2013 |
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| 14, Clos Yr Ysgol288 m away | 71 m² | 93 m² | +22 m² +31% | 2026 |
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| 42, Penallt Terrace610 m away | 93 m² | 115 m² | +22 m² +24% | 2026 |
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| 106, James Street429 m away | 50 m² | 72 m² | +22 m² +44% | 2021 |
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| 1, Arthur Street466 m away | 93 m² | 115 m² | +22 m² +24% | 2021 |
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| 24, Ann Street339 m away | 82 m² | 104 m² | +22 m² +27% | 2019 |
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| 93, Felinfoel Road757 m away | 102 m² | 124 m² | +22 m² +22% | 2016 |
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| 9, Marsh Street868 m away | 94 m² | 116 m² | +22 m² +23% | 2016 |
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| 99, Station Road933 m away | 53 m² | 75 m² | +22 m² +42% | 2015 |
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| 40, Elizabeth Street370 m away | 84 m² | 105 m² | +21 m² +25% | 2024 |
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| 5, New Road995 m away | 139 m² | 160 m² | +21 m² +15% | 2024 |
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| 32, Penallt Terrace610 m away | 93 m² | 114 m² | +21 m² +23% | 2016 |
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| 29, Clifton Terrace513 m away | 98 m² | 119 m² | +21 m² +21% | 2014 |
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| 6, Hick Street799 m away | 106 m² | 127 m² | +21 m² +20% | 2014 |
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| 42, Andrew Street352 m away | 66 m² | 87 m² | +21 m² +32% | 2013 |
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| 38, Swansea Road277 m away | 73 m² | 94 m² | +21 m² +29% | 2010 |
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| 78, James Street298 m away | 92 m² | 112 m² | +20 m² +22% | 2025 |
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| 11, Cae Terrace561 m away | 133 m² | 153 m² | +20 m² +15% | 2025 |
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| 22, Felinfoel Road709 m away | 70 m² | 90 m² | +20 m² +29% | 2025 |
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| 29, Bryntirion574 m away | 113 m² | 133 m² | +20 m² +18% | 2022 |
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| 7, Lower Cross Road493 m away | 75 m² | 95 m² | +20 m² +27% | 2020 |
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| 4, Lakefield Road848 m away | 69 m² | 89 m² | +20 m² +29% | 2015 |
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| 2, Rice Street725 m away | 79 m² | 98 m² | +19 m² +24% | 2023 |
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| 73, Llewellyn Street812 m away | 79 m² | 98 m² | +19 m² +24% | 2016 |
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| 23, Russell Street901 m away | 79 m² | 98 m² | +19 m² +24% | 2015 |
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| 50, Marble Hall Road0 m away | 71 m² | 90 m² | +19 m² +27% | 2014 |
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| 63, Glenalla Road273 m away | 90 m² | 108 m² | +18 m² +20% | 2026 |
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| 16, Clos Yr Ysgol288 m away | 106 m² | 124 m² | +18 m² +17% | 2023 |
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| 47, Coronation Road400 m away | 74 m² | 92 m² | +18 m² +24% | 2023 |
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| 53, Tyr Fran Avenue996 m away | 107 m² | 125 m² | +18 m² +17% | 2022 |
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| 36, Bigyn Road444 m away | 93 m² | 111 m² | +18 m² +19% | 2015 |
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| 52, Dillwyn Street765 m away | 63 m² | 81 m² | +18 m² +29% | 2014 |
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| 30, Waterloo Street788 m away | 75 m² | 93 m² | +18 m² +24% | 2014 |
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| 2, Arthur Street466 m away | 109 m² | 126 m² | +17 m² +16% | 2026 |
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| 28, Prospect Place488 m away | 72 m² | 89 m² | +17 m² +24% | 2026 |
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| 34, Gilbert Crescent571 m away | 66 m² | 83 m² | +17 m² +26% | 2026 |
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| 24, Ridgewood Park956 m away | 96 m² | 113 m² | +17 m² +18% | 2025 |
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| 11a, New Road995 m away | 91 m² | 108 m² | +17 m² +19% | 2025 |
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| 19, Pencae Terrace455 m away | 82 m² | 99 m² | +17 m² +21% | 2023 |
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| 34, Marble Hall Road0 m away | 78 m² | 95 m² | +17 m² +22% | 2016 |
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| 6, Rice Street725 m away | 81 m² | 98 m² | +17 m² +21% | 2016 |
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| Loft 19, Pugh Buildings, Cowell Street609 m away | 35 m² | 52 m² | +17 m² +49% | 2015 |
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| 73, Felinfoel Road757 m away | 85 m² | 102 m² | +17 m² +20% | 2015 |
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| 44, Gilbert Crescent571 m away | 112 m² | 129 m² | +17 m² +15% | 2014 |
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| 59, Tyisha Road703 m away | 92 m² | 108 m² | +16 m² +17% | 2025 |
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| 8, Ann Street339 m away | 72 m² | 88 m² | +16 m² +22% | 2024 |
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| 10, Pottery Place246 m away | 69 m² | 85 m² | +16 m² +23% | 2021 |
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| 3 - 5, Goring Road745 m away | 30 m² | 46 m² | +16 m² +53% | 2020 |
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| 17, Old Castle Road811 m away | 92 m² | 108 m² | +16 m² +17% | 2018 |
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| 5, Robinson Street554 m away | 73 m² | 89 m² | +16 m² +22% | 2015 |
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| 57, Robinson Street666 m away | 77 m² | 93 m² | +16 m² +21% | 2013 |
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| 19, Mansel Street667 m away | 74 m² | 89 m² | +15 m² +20% | 2026 |
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| 14, Andrew Street352 m away | 81 m² | 96 m² | +15 m² +19% | 2025 |
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| 61, Wern Road169 m away | 52 m² | 67 m² | +15 m² +29% | 2023 |
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| Flat 1, Marshfield House, 92, Station Road928 m away | 52 m² | 67 m² | +15 m² +29% | 2023 |
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| 10, Hick Street799 m away | 74 m² | 89 m² | +15 m² +20% | 2022 |
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| 22, Bigyn Road332 m away | 100 m² | 115 m² | +15 m² +15% | 2013 |
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| 41, Old Castle Road811 m away | 74 m² | 89 m² | +15 m² +20% | 2013 |
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