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 BL1 6PG
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 |
|---|---|---|---|---|
| 62, Hill Cot Road879 m away | 124 m² | 240 m² | +116 m² +94% | 2015 |
| 106, Ashworth Lane944 m away | 90 m² | 191 m² | +101 m² +112% | 2016 |
| 86, Sharples Avenue968 m away | 71 m² | 160 m² | +89 m² +125% | 2024 |
| 20, Hill Cot Road879 m away | 100 m² | 183 m² | +83 m² +83% | 2018 |
| 7, Ivy Bank Close773 m away | 154 m² | 230 m² | +76 m² +49% | 2023 |
| 31, Hobart Street979 m away | 99 m² | 175 m² | +76 m² +77% | 2016 |
| 17, Huxley Street891 m away | 71 m² | 145 m² | +74 m² +104% | 2011 |
| 189, Belmont Road509 m away | 129 m² | 201 m² | +72 m² +56% | 2015 |
| 5, Ivy Bank Road674 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.
| 62 m² |
| 133 m² |
| +71 m² +115% |
| 2019 |
| 358a, Belmont Road820 m away | 95 m² | 163 m² | +68 m² +72% | 2014 |
|---|
| 9, Loen Crescent871 m away | 127 m² | 189 m² | +62 m² +49% | 2025 |
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| 48, Shoreswood807 m away | 115 m² | 177 m² | +62 m² +54% | 2024 |
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| 43, Seymour Road630 m away | 258 m² | 316 m² | +58 m² +22% | 2022 |
|---|
| 218, Belmont Road654 m away | 100 m² | 157 m² | +57 m² +57% | 2014 |
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| Beechwood, Broad O' Th' Lane163 m away | 163 m² | 215 m² | +52 m² +32% | 2023 |
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| 62, Wolfenden Street930 m away | 68 m² | 120 m² | +52 m² +76% | 2015 |
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| 4, Fewston Close663 m away | 138 m² | 189 m² | +51 m² +37% | 2014 |
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| 121, Holland Street535 m away | 67 m² | 115 m² | +48 m² +72% | 2016 |
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| 135, Belmont Road453 m away | 97 m² | 144 m² | +47 m² +48% | 2015 |
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| 433, Blackburn Road589 m away | 89 m² | 135 m² | +46 m² +52% | 2025 |
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| Apartment 503, Holden Mill, Blackburn Road846 m away | 57 m² | 103 m² | +46 m² +81% | 2025 |
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| 84, Broad O' Th' Lane246 m away | 168 m² | 213 m² | +45 m² +27% | 2013 |
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| 352, Halliwell Road827 m away | 189 m² | 232 m² | +43 m² +23% | 2014 |
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| 330, Halliwell Road890 m away | 83 m² | 125 m² | +42 m² +51% | 2016 |
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| 652, Crompton Way830 m away | 72 m² | 114 m² | +42 m² +58% | 2011 |
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| 89, Ashworth Lane944 m away | 101 m² | 141 m² | +40 m² +40% | 2019 |
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| 4, Eastbank Street989 m away | 92 m² | 132 m² | +40 m² +43% | 2016 |
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| 220, Belmont Road654 m away | 93 m² | 133 m² | +40 m² +43% | 2015 |
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| 50, Wolfenden Street930 m away | 71 m² | 110 m² | +39 m² +55% | 2025 |
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| 57, Crumpsall Street763 m away | 61 m² | 100 m² | +39 m² +64% | 2014 |
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| 697, Blackburn Road608 m away | 160 m² | 197 m² | +37 m² +23% | 2026 |
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| 4, Birley Street516 m away | 53 m² | 90 m² | +37 m² +70% | 2015 |
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| 1, Perendale Rise397 m away | 145 m² | 182 m² | +37 m² +26% | 2014 |
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| 404, Halliwell Road779 m away | 99 m² | 136 m² | +37 m² +37% | 2013 |
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| 12, Orchard Avenue818 m away | 97 m² | 133 m² | +36 m² +37% | 2015 |
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| 79, Grasmere Street958 m away | 213 m² | 249 m² | +36 m² +17% | 2015 |
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| 35, Westminster Road545 m away | 85 m² | 120 m² | +35 m² +41% | 2024 |
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| 49, Sharples Avenue933 m away | 93 m² | 128 m² | +35 m² +38% | 2020 |
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| 15, Rainshaw Street670 m away | 78 m² | 112 m² | +34 m² +44% | 2025 |
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| 200, Eskrick Street906 m away | 123 m² | 157 m² | +34 m² +28% | 2013 |
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| 20, Mackenzie Street263 m away | 82 m² | 115 m² | +33 m² +40% | 2023 |
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| 15, Eastbank Street989 m away | 85 m² | 118 m² | +33 m² +39% | 2016 |
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| 15, Cameron Street302 m away | 57 m² | 90 m² | +33 m² +58% | 2015 |
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| 13, Cameron Street302 m away | 57 m² | 90 m² | +33 m² +58% | 2015 |
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| 52, Cameron Street350 m away | 30 m² | 63 m² | +33 m² +110% | 2010 |
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| 6, Roslin Gardens866 m away | 56 m² | 88 m² | +32 m² +57% | 2025 |
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| 1, Thorns Road234 m away | 85 m² | 117 m² | +32 m² +38% | 2023 |
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| 62, Hawarden Street613 m away | 41 m² | 73 m² | +32 m² +78% | 2022 |
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| 16, Westminster Road545 m away | 58 m² | 90 m² | +32 m² +55% | 2013 |
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| 282, Halliwell Road890 m away | 36 m² | 67 m² | +31 m² +86% | 2025 |
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| 16, Linwood House, Seymour Road720 m away | 54 m² | 84 m² | +30 m² +56% | 2024 |
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| 7, Florence Avenue776 m away | 80 m² | 110 m² | +30 m² +38% | 2023 |
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| 38, Ivy Bank Road674 m away | 168 m² | 198 m² | +30 m² +18% | 2021 |
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| 660, Blackburn Road609 m away | 94 m² | 124 m² | +30 m² +32% | 2016 |
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| 70, Ashworth Lane798 m away | 102 m² | 132 m² | +30 m² +29% | 2016 |
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| 30, Mcdonna Street914 m away | 33 m² | 63 m² | +30 m² +91% | 2015 |
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| 19, Sunnymead Avenue914 m away | 92 m² | 121 m² | +29 m² +32% | 2023 |
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| 3, Almond Street720 m away | 65 m² | 94 m² | +29 m² +45% | 2022 |
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| 204, Eskrick Street906 m away | 92 m² | 121 m² | +29 m² +32% | 2015 |
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| 35, Cameron Street350 m away | 66 m² | 95 m² | +29 m² +44% | 2013 |
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| 11, Regan Street695 m away | 69 m² | 97 m² | +28 m² +41% | 2019 |
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| 10, Stonyhurst Avenue881 m away | 109 m² | 137 m² | +28 m² +26% | 2015 |
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| Apartment 250, Holden Mill, Blackburn Road846 m away | 63 m² | 90 m² | +27 m² +43% | 2025 |
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| 105, Moss Bank Way131 m away | 152 m² | 179 m² | +27 m² +18% | 2016 |
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| 283, Halliwell Road961 m away | 84 m² | 111 m² | +27 m² +32% | 2013 |
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| 94, Belmont Road485 m away | 104 m² | 130 m² | +26 m² +25% | 2025 |
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| Apartment 249, Holden Mill, Blackburn Road846 m away | 63 m² | 89 m² | +26 m² +41% | 2018 |
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| 43, Oakworth Drive673 m away | 115 m² | 140 m² | +25 m² +22% | 2024 |
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| 5, Oakworth Drive673 m away | 126 m² | 151 m² | +25 m² +20% | 2023 |
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| 18, Sweetstone Gardens975 m away | 66 m² | 91 m² | +25 m² +38% | 2019 |
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| 20, Chelford Avenue673 m away | 95 m² | 120 m² | +25 m² +26% | 2015 |
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| 100, Grasmere Street958 m away | 73 m² | 98 m² | +25 m² +34% | 2014 |
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| 20, Waverley Road525 m away | 102 m² | 126 m² | +24 m² +24% | 2020 |
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| 18, Moss Bank Close172 m away | 81 m² | 105 m² | +24 m² +30% | 2016 |
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| 6, Hill Top618 m away | 51 m² | 75 m² | +24 m² +47% | 2016 |
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| 199, Belmont Road509 m away | 132 m² | 156 m² | +24 m² +18% | 2015 |
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| 23, Olga Street876 m away | 72 m² | 96 m² | +24 m² +33% | 2015 |
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| 43, Crumpsall Street763 m away | 61 m² | 85 m² | +24 m² +39% | 2013 |
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| 15, Primula Street723 m away | 79 m² | 103 m² | +24 m² +30% | 2011 |
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| 593, Halliwell Road911 m away | 63 m² | 87 m² | +24 m² +38% | 2011 |
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| 5, Embsay Close611 m away | 82 m² | 105 m² | +23 m² +28% | 2026 |
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| Apartment 26, Holden Mill, Blackburn Road846 m away | 91 m² | 114 m² | +23 m² +25% | 2023 |
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| 11, Thornhill Close771 m away | 73 m² | 96 m² | +23 m² +32% | 2022 |
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| 80, Seymour Road765 m away | 132 m² | 155 m² | +23 m² +17% | 2013 |
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| 75, Crumpsall Street763 m away | 76 m² | 98 m² | +22 m² +29% | 2026 |
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| 402, Halliwell Road779 m away | 98 m² | 120 m² | +22 m² +22% | 2026 |
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| Apartment 410, Holden Mill, Blackburn Road846 m away | 59 m² | 81 m² | +22 m² +37% | 2022 |
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| 5, Greenleigh Close546 m away | 103 m² | 125 m² | +22 m² +21% | 2021 |
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| 50, Seymour Road765 m away | 132 m² | 154 m² | +22 m² +17% | 2019 |
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| 320, Temple Drive819 m away | 113 m² | 135 m² | +22 m² +19% | 2016 |
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| 123, Seymour Road940 m away | 114 m² | 136 m² | +22 m² +19% | 2016 |
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| 14, Rushford Grove704 m away | 102 m² | 124 m² | +22 m² +22% | 2015 |
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| 10, Elsworth Drive792 m away | 83 m² | 105 m² | +22 m² +27% | 2014 |
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| 104, Belmont Road485 m away | 105 m² | 126 m² | +21 m² +20% | 2018 |
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| 22, Hill Cot Road879 m away | 84 m² | 105 m² | +21 m² +25% | 2016 |
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| 9, Anson Street917 m away | 55 m² | 76 m² | +21 m² +38% | 2016 |
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| 649, Crompton Way823 m away | 100 m² | 121 m² | +21 m² +21% | 2013 |
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| 5, Uttley Street956 m away | 55 m² | 75 m² | +20 m² +36% | 2026 |
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| 32, Florence Avenue802 m away | 69 m² | 89 m² | +20 m² +29% | 2025 |
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| Apartment 245, Holden Mill, Blackburn Road846 m away | 61 m² | 81 m² | +20 m² +33% | 2024 |
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| 462, Halliwell Road779 m away | 83 m² | 103 m² | +20 m² +24% | 2021 |
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| 355, Blackburn Road840 m away | 125 m² | 145 m² | +20 m² +16% | 2013 |
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| 20, Uttley Street956 m away | 51 m² | 71 m² | +20 m² +39% | 2013 |
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| 648, Blackburn Road506 m away | 97 m² | 117 m² | +20 m² +21% | 2011 |
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| 40, Waverley Road525 m away | 123 m² | 143 m² | +20 m² +16% | 2011 |
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| 1, Old Road488 m away | 123 m² | 142 m² | +19 m² +15% | 2017 |
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| 8, Rock Avenue935 m away | 64 m² | 83 m² | +19 m² +30% | 2016 |
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| 57, Rushey Fold Lane882 m away | 96 m² | 115 m² | +19 m² +20% | 2015 |
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| 41, Wordsworth Street973 m away | 69 m² | 88 m² | +19 m² +28% | 2015 |
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| 7, Hurstwood578 m away | 93 m² | 112 m² | +19 m² +20% | 2014 |
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| 9, Hurstwood578 m away | 101 m² | 120 m² | +19 m² +19% | 2014 |
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| 1, Elsham Close587 m away | 95 m² | 114 m² | +19 m² +20% | 2014 |
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| 73, Crumpsall Street763 m away | 66 m² | 85 m² | +19 m² +29% | 2014 |
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| 36, Florence Avenue802 m away | 68 m² | 87 m² | +19 m² +28% | 2011 |
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| Apartment 120, Holden Mill, Blackburn Road846 m away | 47 m² | 65 m² | +18 m² +38% | 2024 |
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| Apartment 639, Holden Mill, Blackburn Road846 m away | 93 m² | 111 m² | +18 m² +19% | 2024 |
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| Apartment 519, Holden Mill, Blackburn Road846 m away | 63 m² | 81 m² | +18 m² +29% | 2023 |
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| 26, Bar Lane577 m away | 89 m² | 107 m² | +18 m² +20% | 2020 |
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| 58, Ashworth Lane798 m away | 81 m² | 99 m² | +18 m² +22% | 2017 |
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| 201, Eskrick Street906 m away | 93 m² | 111 m² | +18 m² +19% | 2014 |
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| Little Acorns, 120, Seymour Road940 m away | 49 m² | 67 m² | +18 m² +37% | 2014 |
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| 12, Douglas Street548 m away | 58 m² | 76 m² | +18 m² +31% | 2012 |
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| 62, Rawsthorne Street956 m away | 53 m² | 70 m² | +17 m² +32% | 2024 |
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| 12, Hawarden Street563 m away | 76 m² | 93 m² | +17 m² +22% | 2023 |
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| 16, Sutcliffe Street794 m away | 103 m² | 120 m² | +17 m² +17% | 2015 |
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| 64, Astley Street841 m away | 98 m² | 115 m² | +17 m² +17% | 2015 |
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| 69, Old Road335 m away | 67 m² | 84 m² | +17 m² +25% | 2014 |
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| 41, Oakworth Drive673 m away | 92 m² | 109 m² | +17 m² +18% | 2014 |
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| 9, Eastbank Street989 m away | 56 m² | 73 m² | +17 m² +30% | 2014 |
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| 92, Belmont Road485 m away | 111 m² | 128 m² | +17 m² +15% | 2013 |
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| 102, Ashworth Lane944 m away | 99 m² | 116 m² | +17 m² +17% | 2013 |
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| 52, Temple Road741 m away | 90 m² | 106 m² | +16 m² +18% | 2026 |
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| 9, Rock Avenue935 m away | 42 m² | 58 m² | +16 m² +38% | 2023 |
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| 15, Thornydyke Avenue720 m away | 72 m² | 88 m² | +16 m² +22% | 2022 |
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| 40, Eastbank Street989 m away | 80 m² | 96 m² | +16 m² +20% | 2016 |
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| 668, Crompton Way830 m away | 86 m² | 102 m² | +16 m² +19% | 2014 |
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| 14, Mitre Street287 m away | 44 m² | 60 m² | +16 m² +36% | 2012 |
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| Apartment 522, Holden Mill, Blackburn Road846 m away | 71 m² | 86 m² | +15 m² +21% | 2026 |
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| 34, Oldhams Terrace389 m away | 58 m² | 73 m² | +15 m² +26% | 2025 |
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| 12, Bar Lane577 m away | 90 m² | 105 m² | +15 m² +17% | 2025 |
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| 32, Sharples Avenue968 m away | 96 m² | 111 m² | +15 m² +16% | 2018 |
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| 11, Old Road488 m away | 96 m² | 111 m² | +15 m² +16% | 2016 |
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| 27, Primula Street723 m away | 73 m² | 88 m² | +15 m² +21% | 2016 |
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| 20, Raimond Street908 m away | 81 m² | 96 m² | +15 m² +19% | 2016 |
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| 13, Thorns Road234 m away | 97 m² | 112 m² | +15 m² +15% | 2014 |
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| 9, Douglas Street548 m away | 85 m² | 100 m² | +15 m² +18% | 2014 |
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| 684, Crompton Way830 m away | 80 m² | 95 m² | +15 m² +19% | 2014 |
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| 40, Sharples Avenue968 m away | 74 m² | 89 m² | +15 m² +20% | 2014 |
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