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 NN1 4QP
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 |
|---|---|---|---|---|
| 10, The Crescent226 m away | 109 m² | 254 m² | +145 m² +133% | 2019 |
| 22, Abington Grove80 m away | 233 m² | 334 m² | +101 m² +43% | 2026 |
| 108, Adams Avenue565 m away | 110 m² | 205 m² | +95 m² +86% | 2016 |
| 54, East Park Parade106 m away | 264 m² | 347 m² | +83 m² +31% | 2014 |
| 236, Abington Avenue591 m away | 141 m² | 223 m² | +82 m² +58% | 2021 |
| 123, Milton Street North665 m away | 92 m² | 173 m² | +81 m² +88% | 2021 |
| 78, The Drive767 m away | 81 m² | 160 m² | +79 m² +98% | 2018 |
| 21, St Michaels Mount530 m away | 99 m² | 178 m² | +79 m² +80% | 2016 |
| 19, St Matthews Parade208 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.
| 333 m² |
| 409 m² |
| +76 m² +23% |
| 2022 |
| 63a, The Drive445 m away | 181 m² | 254 m² | +73 m² +40% | 2013 |
|---|
| 68, Shelley Street555 m away | 52 m² | 121 m² | +69 m² +133% | 2019 |
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| 149, Kingsley Road988 m away | 45 m² | 112 m² | +67 m² +149% | 2023 |
|---|
| 69, Birchfield Road420 m away | 141 m² | 208 m² | +67 m² +48% | 2018 |
|---|
| 51, Poole Street932 m away | 74 m² | 140 m² | +66 m² +89% | 2021 |
|---|
| 45, St Matthews Parade462 m away | 164 m² | 230 m² | +66 m² +40% | 2012 |
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| 26, East Park Parade152 m away | 42 m² | 105 m² | +63 m² +150% | 2011 |
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| 68, Kingsley Road360 m away | 187 m² | 247 m² | +60 m² +32% | 2023 |
|---|
| 130, Artizan Road593 m away | 68 m² | 128 m² | +60 m² +88% | 2020 |
|---|
| 162, Abington Avenue255 m away | 119 m² | 178 m² | +59 m² +50% | 2020 |
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| 37, Park Avenue North663 m away | 152 m² | 211 m² | +59 m² +39% | 2012 |
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| 70, Kingsley Road360 m away | 200 m² | 258 m² | +58 m² +29% | 2020 |
|---|
| 45a, Bostock Avenue708 m away | 130 m² | 188 m² | +58 m² +45% | 2016 |
|---|
| 105, Abington Avenue188 m away | 104 m² | 161 m² | +57 m² +55% | 2024 |
|---|
| 14, Birchfield Road235 m away | 82 m² | 139 m² | +57 m² +70% | 2022 |
|---|
| 84, St Georges Avenue498 m away | 206 m² | 263 m² | +57 m² +28% | 2022 |
|---|
| 16, Christchurch Road965 m away | 168 m² | 224 m² | +56 m² +33% | 2020 |
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| 82, Park Avenue North786 m away | 133 m² | 188 m² | +55 m² +41% | 2023 |
|---|
| 24, Malcolm Road866 m away | 71 m² | 126 m² | +55 m² +77% | 2014 |
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| 19, The Drive215 m away | 290 m² | 344 m² | +54 m² +19% | 2013 |
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| 73, Derby Road300 m away | 89 m² | 141 m² | +52 m² +58% | 2021 |
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| 4, Ivy Road124 m away | 114 m² | 165 m² | +51 m² +45% | 2025 |
|---|
| 6, Sheriff Road579 m away | 84 m² | 134 m² | +50 m² +60% | 2022 |
|---|
| 66, Byron Street500 m away | 73 m² | 122 m² | +49 m² +67% | 2023 |
|---|
| Flat 2, Spencer Warehouse, 22 - 28, Spencer Road734 m away | 111 m² | 160 m² | +49 m² +44% | 2021 |
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| 110a, Clarke Road467 m away | 33 m² | 82 m² | +49 m² +148% | 2018 |
|---|
| 6, Artizan Road750 m away | 51 m² | 99 m² | +48 m² +94% | 2021 |
|---|
| Apartment 7, The Normal Boot & Shoe Factory, 34 - 48, Talbot Road619 m away | 81 m² | 129 m² | +48 m² +59% | 2019 |
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| 33, St Michaels Mount530 m away | 101 m² | 148 m² | +47 m² +47% | 2024 |
|---|
| 44, Murray Avenue929 m away | 65 m² | 111 m² | +46 m² +71% | 2022 |
|---|
| 27, Bostock Avenue708 m away | 121 m² | 167 m² | +46 m² +38% | 2021 |
|---|
| 226, Abington Avenue591 m away | 150 m² | 195 m² | +45 m² +30% | 2024 |
|---|
| 83, Broadway East883 m away | 94 m² | 139 m² | +45 m² +48% | 2024 |
|---|
| 26, Wantage Road616 m away | 65 m² | 110 m² | +45 m² +69% | 2019 |
|---|
| 28, The Drive445 m away | 77 m² | 122 m² | +45 m² +58% | 2015 |
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| 53, Wantage Road616 m away | 84 m² | 128 m² | +44 m² +52% | 2023 |
|---|
| 107, Kingsley Road988 m away | 94 m² | 138 m² | +44 m² +47% | 2023 |
|---|
| 24, Collingwood Road338 m away | 94 m² | 137 m² | +43 m² +46% | 2022 |
|---|
| 47, Colwyn Road678 m away | 166 m² | 209 m² | +43 m² +26% | 2021 |
|---|
| 35, Manfield Road641 m away | 41 m² | 83 m² | +42 m² +102% | 2019 |
|---|
| 1, Sheriff Road579 m away | 69 m² | 111 m² | +42 m² +61% | 2014 |
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| 117, Hunter Street793 m away | 88 m² | 129 m² | +41 m² +47% | 2023 |
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| 37, Holly Road157 m away | 131 m² | 172 m² | +41 m² +31% | 2018 |
|---|
| 60, Moore Street610 m away | 28 m² | 68 m² | +40 m² +143% | 2025 |
|---|
| 8, The Crescent226 m away | 62 m² | 102 m² | +40 m² +65% | 2012 |
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| 55, East Park Parade106 m away | 61 m² | 100 m² | +39 m² +64% | 2022 |
|---|
| 114, Colwyn Road522 m away | 101 m² | 140 m² | +39 m² +39% | 2022 |
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| 167, Wycliffe Road881 m away | 72 m² | 111 m² | +39 m² +54% | 2020 |
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| 131, Colwyn Road471 m away | 57 m² | 96 m² | +39 m² +68% | 2015 |
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| 53, Derby Road300 m away | 101 m² | 139 m² | +38 m² +38% | 2026 |
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| 184, Cedar Road East853 m away | 105 m² | 143 m² | +38 m² +36% | 2023 |
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| 50, Christchurch Road965 m away | 103 m² | 141 m² | +38 m² +37% | 2023 |
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| 13, Chestnut Road949 m away | 61 m² | 99 m² | +38 m² +62% | 2022 |
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| 8, Hunter Street881 m away | 71 m² | 109 m² | +38 m² +54% | 2018 |
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| 40, Florence Road725 m away | 88 m² | 126 m² | +38 m² +43% | 2014 |
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| 21, Albany Road996 m away | 103 m² | 140 m² | +37 m² +36% | 2023 |
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| 111, Loyd Road898 m away | 99 m² | 136 m² | +37 m² +37% | 2016 |
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| 89, Oliver Street401 m away | 82 m² | 119 m² | +37 m² +45% | 2015 |
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| 21, Ardington Road961 m away | 137 m² | 173 m² | +36 m² +26% | 2026 |
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| 14, Broadway432 m away | 197 m² | 233 m² | +36 m² +18% | 2022 |
|---|
| 106, Birchfield Road422 m away | 79 m² | 115 m² | +36 m² +46% | 2018 |
|---|
| 94, Colwyn Road522 m away | 79 m² | 115 m² | +36 m² +46% | 2018 |
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| 27, Burns Street715 m away | 40 m² | 76 m² | +36 m² +90% | 2018 |
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| 53, Collingwood Road338 m away | 84 m² | 120 m² | +36 m² +43% | 2012 |
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| Flat 5, 23, Clarke Road447 m away | 24 m² | 60 m² | +36 m² +150% | 2010 |
|---|
| 58, Kingsley Road360 m away | 215 m² | 250 m² | +35 m² +16% | 2021 |
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| 51, Cowper Street613 m away | 87 m² | 122 m² | +35 m² +40% | 2021 |
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| 42, The Vale502 m away | 89 m² | 124 m² | +35 m² +39% | 2018 |
|---|
| 36, Austin Street936 m away | 75 m² | 110 m² | +35 m² +47% | 2014 |
|---|
| 65, Murray Avenue929 m away | 74 m² | 108 m² | +34 m² +46% | 2012 |
|---|
| 28, Clarke Road467 m away | 90 m² | 123 m² | +33 m² +37% | 2026 |
|---|
| 21, Austin Street936 m away | 41 m² | 74 m² | +33 m² +80% | 2025 |
|---|
| 69b, Kettering Road956 m away | 38 m² | 70 m² | +32 m² +84% | 2025 |
|---|
| 18, Birchfield Road235 m away | 124 m² | 156 m² | +32 m² +26% | 2023 |
|---|
| 34, Park Avenue North733 m away | 173 m² | 205 m² | +32 m² +18% | 2021 |
|---|
| 32, Raeburn Road819 m away | 52 m² | 84 m² | +32 m² +62% | 2021 |
|---|
| 44, Bostock Avenue708 m away | 160 m² | 192 m² | +32 m² +20% | 2020 |
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| 42, Hunter Street785 m away | 68 m² | 100 m² | +32 m² +47% | 2020 |
|---|
| 17, Whitworth Road727 m away | 88 m² | 120 m² | +32 m² +36% | 2011 |
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| 81, Ashburnham Road425 m away | 96 m² | 127 m² | +31 m² +32% | 2026 |
|---|
| 4, Gray Street772 m away | 87 m² | 118 m² | +31 m² +36% | 2018 |
|---|
| 32, Ivy Road124 m away | 105 m² | 135 m² | +30 m² +29% | 2026 |
|---|
| 31, St Michaels Mount530 m away | 118 m² | 148 m² | +30 m² +25% | 2024 |
|---|
| 152, Ashburnham Road561 m away | 92 m² | 122 m² | +30 m² +33% | 2024 |
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| 138, Kingsley Road620 m away | 94 m² | 124 m² | +30 m² +32% | 2024 |
|---|
| 73, Lea Road340 m away | 75 m² | 105 m² | +30 m² +40% | 2023 |
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| 74, Talbot Road623 m away | 67 m² | 97 m² | +30 m² +45% | 2022 |
|---|
| 135, Whitworth Road565 m away | 91 m² | 121 m² | +30 m² +33% | 2021 |
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| 12, Carlton Road720 m away | 81 m² | 111 m² | +30 m² +37% | 2018 |
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| 101, Kingsley Road988 m away | 56 m² | 86 m² | +30 m² +54% | 2018 |
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| 17, Holly Road157 m away | 138 m² | 167 m² | +29 m² +21% | 2022 |
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| 17, Masefield Way929 m away | 48 m² | 77 m² | +29 m² +60% | 2015 |
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| 68, Henry Street593 m away | 85 m² | 114 m² | +29 m² +34% | 2009 |
|---|
| Apartment 18, Martonia Buildings, 62 - 68, Artizan Road593 m away | 46 m² | 74 m² | +28 m² +61% | 2020 |
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| 31, Queens Road788 m away | 99 m² | 126 m² | +27 m² +27% | 2025 |
|---|
| 91, Broadway East883 m away | 83 m² | 110 m² | +27 m² +33% | 2024 |
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| 85, Bostock Avenue559 m away | 116 m² | 143 m² | +27 m² +23% | 2023 |
|---|
| 22, Hawthorn Road932 m away | 106 m² | 133 m² | +27 m² +25% | 2022 |
|---|
| Flat 8, Galliard Court, 48, Baronson Gardens388 m away | 34 m² | 61 m² | +27 m² +79% | 2021 |
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| 86, Moore Street610 m away | 81 m² | 108 m² | +27 m² +33% | 2021 |
|---|
| 100, Ashburnham Road425 m away | 149 m² | 176 m² | +27 m² +18% | 2020 |
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| 62, Roe Road432 m away | 84 m² | 111 m² | +27 m² +32% | 2014 |
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| 38 - 44, Artizan Road750 m away | 112 m² | 139 m² | +27 m² +24% | 2010 |
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| 28 - 30, Hunter Street881 m away | 47 m² | 74 m² | +27 m² +57% | 2010 |
|---|
| 108, St Georges Avenue498 m away | 42 m² | 69 m² | +27 m² +64% | 2008 |
|---|
| 2, Kingsley Gardens608 m away | 111 m² | 137 m² | +26 m² +23% | 2026 |
|---|
| 65, Holly Road29 m away | 152 m² | 178 m² | +26 m² +17% | 2023 |
|---|
| 96, Whitworth Road574 m away | 82 m² | 108 m² | +26 m² +32% | 2023 |
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| 13, Bostock Avenue708 m away | 134 m² | 160 m² | +26 m² +19% | 2022 |
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| 100, Lea Road349 m away | 117 m² | 143 m² | +26 m² +22% | 2021 |
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| 8, Oliver Street414 m away | 97 m² | 123 m² | +26 m² +27% | 2021 |
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| 43, Bostock Avenue708 m away | 58 m² | 84 m² | +26 m² +45% | 2021 |
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| 121, Colwyn Road471 m away | 30 m² | 56 m² | +26 m² +87% | 2019 |
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| 170, Wycliffe Road903 m away | 91 m² | 116 m² | +25 m² +27% | 2026 |
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| 36, Roe Road432 m away | 80 m² | 105 m² | +25 m² +31% | 2024 |
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| 97, Ashburnham Road425 m away | 96 m² | 121 m² | +25 m² +26% | 2023 |
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| 112, Cedar Road East853 m away | 102 m² | 127 m² | +25 m² +25% | 2023 |
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| 52, Hervey Street792 m away | 98 m² | 123 m² | +25 m² +26% | 2022 |
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| 6, Chestnut Road949 m away | 84 m² | 109 m² | +25 m² +30% | 2021 |
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| 16, Artizan Road750 m away | 88 m² | 113 m² | +25 m² +28% | 2020 |
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| 35, Stimpson Avenue713 m away | 107 m² | 132 m² | +25 m² +23% | 2019 |
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| 76, Clarke Road467 m away | 44 m² | 69 m² | +25 m² +57% | 2018 |
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| 160, Birchfield Road557 m away | 127 m² | 152 m² | +25 m² +20% | 2018 |
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| 18, Wilby Street894 m away | 75 m² | 100 m² | +25 m² +33% | 2009 |
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| 35, Cedar Road426 m away | 110 m² | 134 m² | +24 m² +22% | 2026 |
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| 107, Lea Road340 m away | 122 m² | 146 m² | +24 m² +20% | 2022 |
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| 10, The Archway760 m away | 78 m² | 102 m² | +24 m² +31% | 2022 |
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| 51, Derby Road300 m away | 97 m² | 121 m² | +24 m² +25% | 2021 |
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| 9, Clarke Road447 m away | 79 m² | 103 m² | +24 m² +30% | 2021 |
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| 49, Hood Street543 m away | 131 m² | 155 m² | +24 m² +18% | 2021 |
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| 44, Broadway576 m away | 102 m² | 126 m² | +24 m² +24% | 2020 |
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| 35, Artizan Road750 m away | 76 m² | 100 m² | +24 m² +32% | 2019 |
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| 46, Whitworth Road574 m away | 85 m² | 108 m² | +23 m² +27% | 2025 |
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| 77, Lea Road340 m away | 77 m² | 100 m² | +23 m² +30% | 2022 |
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| 44, Hervey Street792 m away | 73 m² | 96 m² | +23 m² +32% | 2021 |
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| 75, Ivy Road95 m away | 90 m² | 113 m² | +23 m² +26% | 2020 |
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| 111, Adams Avenue565 m away | 129 m² | 152 m² | +23 m² +18% | 2018 |
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| 18, The Crescent226 m away | 96 m² | 119 m² | +23 m² +24% | 2010 |
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| 151, Ashburnham Road561 m away | 91 m² | 113 m² | +22 m² +24% | 2026 |
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| 44, Clare Street899 m away | 106 m² | 128 m² | +22 m² +21% | 2026 |
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| 33b, Junction Road606 m away | 102 m² | 124 m² | +22 m² +22% | 2025 |
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| Flat 6, Galliard Court, 48, Baronson Gardens388 m away | 31 m² | 53 m² | +22 m² +71% | 2024 |
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| 14, Lime Avenue913 m away | 120 m² | 142 m² | +22 m² +18% | 2024 |
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| 26, Clare Street899 m away | 43 m² | 65 m² | +22 m² +51% | 2023 |
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| 5, Clare Street941 m away | 35 m² | 57 m² | +22 m² +63% | 2023 |
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| 12, The Archway760 m away | 70 m² | 92 m² | +22 m² +31% | 2022 |
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| 88, Whitworth Road574 m away | 98 m² | 120 m² | +22 m² +22% | 2021 |
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| Flat 4, The Plaza, 4, Grove Road875 m away | 48 m² | 70 m² | +22 m² +46% | 2020 |
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| 7, Queens Road788 m away | 76 m² | 98 m² | +22 m² +29% | 2019 |
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| 141, Adnitt Road513 m away | 62 m² | 84 m² | +22 m² +35% | 2016 |
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| Ivy Court, 20, Abington Grove121 m away | 52 m² | 74 m² | +22 m² +42% | 2014 |
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| 83, Colwyn Road471 m away | 22 m² | 44 m² | +22 m² +100% | 2014 |
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| 65, Artizan Road570 m away | 88 m² | 110 m² | +22 m² +25% | 2014 |
|---|
| 84, Hood Street536 m away | 60 m² | 82 m² | +22 m² +37% | 2012 |
|---|
| 20, Stimpson Avenue713 m away | 90 m² | 112 m² | +22 m² +24% | 2011 |
|---|
| 28, Birchfield Road235 m away | 114 m² | 135 m² | +21 m² +18% | 2024 |
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| 171, Milton Street North817 m away | 72 m² | 93 m² | +21 m² +29% | 2024 |
|---|
| 29, Austin Street936 m away | 65 m² | 86 m² | +21 m² +32% | 2023 |
|---|
| 47, Poole Street932 m away | 57 m² | 78 m² | +21 m² +37% | 2022 |
|---|
| 30, Melbourne Walk921 m away | 59 m² | 80 m² | +21 m² +36% | 2021 |
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| 89, Adams Avenue565 m away | 118 m² | 139 m² | +21 m² +18% | 2017 |
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| 15, Masefield Way929 m away | 45 m² | 66 m² | +21 m² +47% | 2015 |
|---|
| 114, Park Avenue North884 m away | 115 m² | 136 m² | +21 m² +18% | 2014 |
|---|
| 30, Collingwood Road338 m away | 120 m² | 141 m² | +21 m² +18% | 2012 |
|---|
| 57, Whitworth Road565 m away | 76 m² | 96 m² | +20 m² +26% | 2025 |
|---|
| 34, Burns Street715 m away | 106 m² | 126 m² | +20 m² +19% | 2025 |
|---|
| 151, Adnitt Road513 m away | 75 m² | 95 m² | +20 m² +27% | 2024 |
|---|
| 41, Clarke Road447 m away | 76 m² | 96 m² | +20 m² +26% | 2023 |
|---|
| 47, Wantage Road616 m away | 83 m² | 103 m² | +20 m² +24% | 2023 |
|---|
| 90, Birchfield Road422 m away | 125 m² | 145 m² | +20 m² +16% | 2020 |
|---|
| 46, Milton Street450 m away | 64 m² | 84 m² | +20 m² +31% | 2019 |
|---|
| 65, Adams Avenue565 m away | 88 m² | 108 m² | +20 m² +23% | 2019 |
|---|
| Apartment 5, Top Boot Factory, 20, Henry Street593 m away | 51 m² | 71 m² | +20 m² +39% | 2019 |
|---|
| Flat 15, Grove Works, 74, Clare Street806 m away | 72 m² | 92 m² | +20 m² +28% | 2019 |
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| 107, Raeburn Road931 m away | 66 m² | 86 m² | +20 m² +30% | 2019 |
|---|
| 41, Hervey Street801 m away | 78 m² | 98 m² | +20 m² +26% | 2018 |
|---|
| 41, The Vale536 m away | 91 m² | 111 m² | +20 m² +22% | 2013 |
|---|
| 3, Gray Street772 m away | 40 m² | 60 m² | +20 m² +50% | 2009 |
|---|
| 66, Ashburnham Road425 m away | 93 m² | 112 m² | +19 m² +20% | 2026 |
|---|
| 65, Stimpson Avenue584 m away | 113 m² | 132 m² | +19 m² +17% | 2025 |
|---|
| 5, Gray Street772 m away | 96 m² | 115 m² | +19 m² +20% | 2023 |
|---|
| 50, Bostock Avenue559 m away | 96 m² | 115 m² | +19 m² +20% | 2022 |
|---|
| 80, Artizan Road593 m away | 89 m² | 108 m² | +19 m² +21% | 2022 |
|---|
| 25, Ashburnham Road250 m away | 73 m² | 92 m² | +19 m² +26% | 2020 |
|---|
| 44, The Vale502 m away | 86 m² | 105 m² | +19 m² +22% | 2020 |
|---|
| 108, Adnitt Road504 m away | 102 m² | 121 m² | +19 m² +19% | 2020 |
|---|
| 77, Hunter Street793 m away | 77 m² | 96 m² | +19 m² +25% | 2020 |
|---|
| 5, East Street894 m away | 57 m² | 76 m² | +19 m² +33% | 2020 |
|---|
| 6, Derby Road320 m away | 81 m² | 100 m² | +19 m² +23% | 2019 |
|---|
| 101, Whitworth Road565 m away | 78 m² | 97 m² | +19 m² +24% | 2019 |
|---|
| 92, Cedar Road566 m away | 39 m² | 58 m² | +19 m² +49% | 2016 |
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