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 N9 8DB
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 |
|---|---|---|---|---|
| 46, Cuckoo Hall Lane143 m away | 105 m² | 211 m² | +106 m² +101% | 2019 |
| 76, Cambourne Avenue343 m away | 71 m² | 162 m² | +91 m² +128% | 2025 |
| 189, St Marys Road365 m away | 87 m² | 176 m² | +89 m² +102% | 2026 |
| 19, Bury Street970 m away | 64 m² | 134 m² | +70 m² +109% | 2024 |
| 79, King Edwards Road645 m away | 78 m² | 147 m² | +69 m² +88% | 2025 |
| 1, Lowden Road575 m away | 105 m² | 173 m² | +68 m² +65% | 2020 |
| 228, Bounces Road789 m away | 91 m² | 158 m² | +67 m² +74% | 2023 |
| 24, Cornwallis Grove899 m away | 67 m² | 134 m² | +67 m² +100% | 2014 |
| 13, Gordon Road952 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.
| 71 m² |
| 135 m² |
| +64 m² +90% |
| 2014 |
| 60, Northfield Road799 m away | 103 m² | 166 m² | +63 m² +61% | 2025 |
|---|
| 50, Church Road814 m away | 83 m² | 146 m² | +63 m² +76% | 2025 |
|---|
| 24, Coniston Gardens530 m away | 63 m² | 125 m² | +62 m² +98% | 2026 |
|---|
| 195, St Marys Road365 m away | 91 m² | 153 m² | +62 m² +68% | 2025 |
|---|
| 1, Northfield Road828 m away | 92 m² | 153 m² | +61 m² +66% | 2023 |
|---|
| 129, Cuckoo Hall Lane232 m away | 86 m² | 146 m² | +60 m² +70% | 2025 |
|---|
| 228, Nightingale Road367 m away | 73 m² | 133 m² | +60 m² +82% | 2025 |
|---|
| 92, Chester Road707 m away | 72 m² | 132 m² | +60 m² +83% | 2023 |
|---|
| 37, Woodlands Road418 m away | 80 m² | 139 m² | +59 m² +74% | 2023 |
|---|
| 38, Exeter Road965 m away | 69 m² | 127 m² | +58 m² +84% | 2021 |
|---|
| 102, Nightingale Road200 m away | 121 m² | 177 m² | +56 m² +46% | 2021 |
|---|
| 16, Southfield Road756 m away | 87 m² | 142 m² | +55 m² +63% | 2026 |
|---|
| 54, Dartford Avenue387 m away | 88 m² | 143 m² | +55 m² +63% | 2019 |
|---|
| 49, Lowden Road575 m away | 79 m² | 134 m² | +55 m² +70% | 2014 |
|---|
| 165, Bounces Road730 m away | 81 m² | 134 m² | +53 m² +65% | 2022 |
|---|
| 31, Bury Street970 m away | 85 m² | 137 m² | +52 m² +61% | 2019 |
|---|
| 69, Westminster Road769 m away | 71 m² | 123 m² | +52 m² +73% | 2014 |
|---|
| 20, Warren Close349 m away | 77 m² | 128 m² | +51 m² +66% | 2026 |
|---|
| 20, Orchard Road844 m away | 95 m² | 145 m² | +50 m² +53% | 2026 |
|---|
| 175, Hertford Road770 m away | 92 m² | 142 m² | +50 m² +54% | 2024 |
|---|
| 53, Grosvenor Road621 m away | 74 m² | 123 m² | +49 m² +66% | 2025 |
|---|
| 300, Hertford Road607 m away | 94 m² | 143 m² | +49 m² +52% | 2023 |
|---|
| 21, Findon Road861 m away | 97 m² | 146 m² | +49 m² +51% | 2023 |
|---|
| 50, Shirley Grove273 m away | 75 m² | 122 m² | +47 m² +63% | 2026 |
|---|
| 49, South Street996 m away | 118 m² | 165 m² | +47 m² +40% | 2019 |
|---|
| 15, St Peters Road667 m away | 90 m² | 136 m² | +46 m² +51% | 2026 |
|---|
| 118, St Josephs Road293 m away | 85 m² | 131 m² | +46 m² +54% | 2025 |
|---|
| 157, Cuckoo Hall Lane232 m away | 71 m² | 117 m² | +46 m² +65% | 2023 |
|---|
| 23, Rosemary Avenue762 m away | 79 m² | 124 m² | +45 m² +57% | 2020 |
|---|
| 15, St Michaels Avenue47 m away | 60 m² | 104 m² | +44 m² +73% | 2026 |
|---|
| 208, Bounces Road789 m away | 77 m² | 121 m² | +44 m² +57% | 2026 |
|---|
| 7, Falcon Road938 m away | 76 m² | 120 m² | +44 m² +58% | 2024 |
|---|
| 36, Colville Road806 m away | 72 m² | 116 m² | +44 m² +61% | 2023 |
|---|
| 57, Grosvenor Road621 m away | 77 m² | 121 m² | +44 m² +57% | 2022 |
|---|
| 14, Grosvenor Road700 m away | 69 m² | 113 m² | +44 m² +64% | 2021 |
|---|
| 47, Bridlington Road649 m away | 77 m² | 121 m² | +44 m² +57% | 2015 |
|---|
| 42, Oxford Road976 m away | 75 m² | 117 m² | +42 m² +56% | 2023 |
|---|
| 52, Clarence Road900 m away | 95 m² | 137 m² | +42 m² +44% | 2019 |
|---|
| 85, Charlton Road449 m away | 80 m² | 120 m² | +40 m² +50% | 2026 |
|---|
| 40, Dover Road944 m away | 87 m² | 126 m² | +39 m² +45% | 2024 |
|---|
| 1, Brierley Avenue545 m away | 92 m² | 130 m² | +38 m² +41% | 2025 |
|---|
| 9, Clarence Road926 m away | 74 m² | 112 m² | +38 m² +51% | 2023 |
|---|
| 40, Exeter Road965 m away | 81 m² | 119 m² | +38 m² +47% | 2023 |
|---|
| 42, Dartford Avenue387 m away | 87 m² | 124 m² | +37 m² +43% | 2022 |
|---|
| 244, Hertford Road691 m away | 59 m² | 96 m² | +37 m² +63% | 2021 |
|---|
| 20, Coniston Gardens530 m away | 68 m² | 105 m² | +37 m² +54% | 2017 |
|---|
| 23, Chester Road697 m away | 82 m² | 118 m² | +36 m² +44% | 2022 |
|---|
| 48, Forest Road506 m away | 76 m² | 112 m² | +36 m² +47% | 2014 |
|---|
| 66, St Peters Road643 m away | 42 m² | 77 m² | +35 m² +83% | 2026 |
|---|
| 189, Bounces Road730 m away | 88 m² | 123 m² | +35 m² +40% | 2023 |
|---|
| 3, Northfield Road828 m away | 102 m² | 137 m² | +35 m² +34% | 2022 |
|---|
| 126, Sandhurst Road544 m away | 94 m² | 129 m² | +35 m² +37% | 2019 |
|---|
| 16, Oxford Road976 m away | 80 m² | 115 m² | +35 m² +44% | 2019 |
|---|
| 51, Southfield Road735 m away | 84 m² | 119 m² | +35 m² +42% | 2015 |
|---|
| 178, Bounces Road789 m away | 109 m² | 144 m² | +35 m² +32% | 2010 |
|---|
| 49, Gordon Road952 m away | 82 m² | 116 m² | +34 m² +41% | 2022 |
|---|
| 121, Charlton Road449 m away | 80 m² | 114 m² | +34 m² +43% | 2016 |
|---|
| 51, Chester Road697 m away | 74 m² | 108 m² | +34 m² +46% | 2015 |
|---|
| 53, Westminster Road769 m away | 106 m² | 139 m² | +33 m² +31% | 2025 |
|---|
| 12, Oxford Road976 m away | 88 m² | 121 m² | +33 m² +38% | 2025 |
|---|
| 7, Nash Road864 m away | 83 m² | 116 m² | +33 m² +40% | 2022 |
|---|
| 199, Galliard Road879 m away | 79 m² | 112 m² | +33 m² +42% | 2021 |
|---|
| 70, Lowden Road550 m away | 69 m² | 101 m² | +32 m² +46% | 2024 |
|---|
| 34, Elmcroft Avenue680 m away | 99 m² | 131 m² | +32 m² +32% | 2024 |
|---|
| 31, Westminster Road769 m away | 90 m² | 122 m² | +32 m² +36% | 2023 |
|---|
| 45, Cornwallis Road933 m away | 94 m² | 126 m² | +32 m² +34% | 2022 |
|---|
| 97, Grosvenor Road621 m away | 43 m² | 75 m² | +32 m² +74% | 2019 |
|---|
| 32, Wellstead Avenue328 m away | 73 m² | 104 m² | +31 m² +42% | 2025 |
|---|
| 4, Northfield Road799 m away | 111 m² | 142 m² | +31 m² +28% | 2025 |
|---|
| 115a, High Street949 m away | 82 m² | 113 m² | +31 m² +38% | 2025 |
|---|
| 35, Bury Street970 m away | 76 m² | 107 m² | +31 m² +41% | 2024 |
|---|
| 28, South Road951 m away | 71 m² | 102 m² | +31 m² +44% | 2023 |
|---|
| 1, Kingsmead Avenue832 m away | 129 m² | 160 m² | +31 m² +24% | 2022 |
|---|
| 14, Chelsfield Green420 m away | 70 m² | 101 m² | +31 m² +44% | 2021 |
|---|
| 47, Oxford Road966 m away | 40 m² | 71 m² | +31 m² +78% | 2021 |
|---|
| 292, Nightingale Road564 m away | 65 m² | 96 m² | +31 m² +48% | 2016 |
|---|
| 214, Hertford Road804 m away | 59 m² | 90 m² | +31 m² +53% | 2016 |
|---|
| 24, Church Road814 m away | 91 m² | 121 m² | +30 m² +33% | 2026 |
|---|
| 15, North Road684 m away | 74 m² | 104 m² | +30 m² +41% | 2025 |
|---|
| 131, St Marys Road365 m away | 67 m² | 97 m² | +30 m² +45% | 2023 |
|---|
| 7, St Alphege Road218 m away | 89 m² | 119 m² | +30 m² +34% | 2021 |
|---|
| 1a, Norfolk Road982 m away | 42 m² | 72 m² | +30 m² +71% | 2021 |
|---|
| 40, Denny Road753 m away | 76 m² | 106 m² | +30 m² +39% | 2014 |
|---|
| 282, Nightingale Road564 m away | 86 m² | 115 m² | +29 m² +34% | 2024 |
|---|
| 19, Elstree Gardens815 m away | 85 m² | 114 m² | +29 m² +34% | 2024 |
|---|
| 28, Turin Road88 m away | 114 m² | 143 m² | +29 m² +25% | 2023 |
|---|
| 62, Tramway Avenue289 m away | 63 m² | 92 m² | +29 m² +46% | 2019 |
|---|
| 8, Grosvenor Road700 m away | 76 m² | 105 m² | +29 m² +38% | 2019 |
|---|
| 7, Shirley Grove250 m away | 59 m² | 88 m² | +29 m² +49% | 2018 |
|---|
| 24, Findon Road861 m away | 92 m² | 121 m² | +29 m² +32% | 2017 |
|---|
| 21, Chelsfield Avenue444 m away | 88 m² | 117 m² | +29 m² +33% | 2015 |
|---|
| 133, St Marys Road365 m away | 71 m² | 99 m² | +28 m² +39% | 2025 |
|---|
| 35, Doncaster Road540 m away | 87 m² | 115 m² | +28 m² +32% | 2025 |
|---|
| 38, Dover Road944 m away | 96 m² | 124 m² | +28 m² +29% | 2021 |
|---|
| 13, Oxford Road966 m away | 68 m² | 96 m² | +28 m² +41% | 2014 |
|---|
| 23, Grosvenor Road621 m away | 118 m² | 146 m² | +28 m² +24% | 2013 |
|---|
| 463, Lincoln Road964 m away | 72 m² | 100 m² | +28 m² +39% | 2013 |
|---|
| 24, Southfield Road756 m away | 57 m² | 85 m² | +28 m² +49% | 2011 |
|---|
| 26, Gordon Road948 m away | 78 m² | 105 m² | +27 m² +35% | 2025 |
|---|
| 90, Forest Road506 m away | 78 m² | 105 m² | +27 m² +35% | 2023 |
|---|
| 194, Galliard Road543 m away | 98 m² | 125 m² | +27 m² +28% | 2020 |
|---|
| 100, Forest Road506 m away | 73 m² | 100 m² | +27 m² +37% | 2014 |
|---|
| 57, Lowden Road575 m away | 44 m² | 71 m² | +27 m² +61% | 2014 |
|---|
| 61, Clarence Road926 m away | 110 m² | 136 m² | +26 m² +24% | 2026 |
|---|
| 393, Hertford Road411 m away | 95 m² | 121 m² | +26 m² +27% | 2025 |
|---|
| 266a, St Marys Road437 m away | 63 m² | 89 m² | +26 m² +41% | 2024 |
|---|
| 94, Sandhurst Road485 m away | 88 m² | 114 m² | +26 m² +30% | 2024 |
|---|
| 16, Mayfield Crescent921 m away | 67 m² | 93 m² | +26 m² +39% | 2024 |
|---|
| 64, Cambourne Avenue343 m away | 64 m² | 90 m² | +26 m² +41% | 2023 |
|---|
| 7, Dover Road944 m away | 93 m² | 119 m² | +26 m² +28% | 2022 |
|---|
| 45, Penfold Road406 m away | 82 m² | 108 m² | +26 m² +32% | 2019 |
|---|
| 11, Kingsmead Avenue832 m away | 77 m² | 103 m² | +26 m² +34% | 2016 |
|---|
| 59, Lowden Road575 m away | 45 m² | 71 m² | +26 m² +58% | 2014 |
|---|
| 8, Bury Street927 m away | 81 m² | 107 m² | +26 m² +32% | 2012 |
|---|
| 19, Sutherland Road864 m away | 74 m² | 100 m² | +26 m² +35% | 2010 |
|---|
| 18, Norfolk Road982 m away | 81 m² | 107 m² | +26 m² +32% | 2010 |
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| 57, Bath Road843 m away | 79 m² | 104 m² | +25 m² +32% | 2025 |
|---|
| 37, Cornwallis Road933 m away | 70 m² | 95 m² | +25 m² +36% | 2022 |
|---|
| 39, Norfolk Road982 m away | 70 m² | 95 m² | +25 m² +36% | 2021 |
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| 44, Chaffinch Close582 m away | 44 m² | 69 m² | +25 m² +57% | 2012 |
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| 520, Hertford Road386 m away | 47 m² | 72 m² | +25 m² +53% | 2010 |
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| 13, Cornwallis Grove922 m away | 35 m² | 60 m² | +25 m² +71% | 2008 |
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| 50, Norfolk Road982 m away | 81 m² | 105 m² | +24 m² +30% | 2026 |
|---|
| 58, Cornwallis Grove899 m away | 87 m² | 111 m² | +24 m² +28% | 2025 |
|---|
| 128, Oaklands Avenue739 m away | 56 m² | 80 m² | +24 m² +43% | 2021 |
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| 7, Elstree Gardens815 m away | 85 m² | 109 m² | +24 m² +28% | 2014 |
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| 1, Martin Close650 m away | 20 m² | 44 m² | +24 m² +120% | 2012 |
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| 5, Cambourne Avenue318 m away | 67 m² | 90 m² | +23 m² +34% | 2022 |
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| 72, Westminster Road735 m away | 87 m² | 110 m² | +23 m² +26% | 2022 |
|---|
| 86, Southfield Road756 m away | 85 m² | 108 m² | +23 m² +27% | 2022 |
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| 27, Chester Gardens954 m away | 73 m² | 96 m² | +23 m² +32% | 2022 |
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| 288, Hertford Road607 m away | 72 m² | 95 m² | +23 m² +32% | 2020 |
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| 53, Southfield Road735 m away | 103 m² | 126 m² | +23 m² +22% | 2019 |
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| 5, Scarborough Road225 m away | 72 m² | 95 m² | +23 m² +32% | 2014 |
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| 83, High Street882 m away | 105 m² | 128 m² | +23 m² +22% | 2013 |
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| 54, Oxford Road976 m away | 43 m² | 65 m² | +22 m² +51% | 2025 |
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| 43, King Edwards Road508 m away | 91 m² | 113 m² | +22 m² +24% | 2024 |
|---|
| 189, Sandhurst Road649 m away | 84 m² | 106 m² | +22 m² +26% | 2023 |
|---|
| 39, Devonshire Road576 m away | 80 m² | 102 m² | +22 m² +28% | 2022 |
|---|
| 51, Beatrice Road318 m away | 113 m² | 135 m² | +22 m² +19% | 2019 |
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| 94, Oaklands Avenue739 m away | 70 m² | 92 m² | +22 m² +31% | 2019 |
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| 29, Colville Road826 m away | 98 m² | 120 m² | +22 m² +22% | 2016 |
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| 29, Dover Road944 m away | 88 m² | 110 m² | +22 m² +25% | 2014 |
|---|
| 14, Shirley Grove273 m away | 66 m² | 88 m² | +22 m² +33% | 2011 |
|---|
| 140, Nightingale Road153 m away | 71 m² | 93 m² | +22 m² +31% | 2010 |
|---|
| 103, Charlton Road449 m away | 68 m² | 89 m² | +21 m² +31% | 2025 |
|---|
| 37, Denny Road770 m away | 89 m² | 110 m² | +21 m² +24% | 2025 |
|---|
| 20, Cornwallis Grove899 m away | 73 m² | 94 m² | +21 m² +29% | 2024 |
|---|
| 13, Cornwallis Avenue981 m away | 72 m² | 93 m² | +21 m² +29% | 2024 |
|---|
| 102, Charlton Road416 m away | 103 m² | 124 m² | +21 m² +20% | 2022 |
|---|
| 300, Nightingale Road564 m away | 78 m² | 99 m² | +21 m² +27% | 2021 |
|---|
| 28, Church Road814 m away | 85 m² | 106 m² | +21 m² +25% | 2021 |
|---|
| 70, Clarence Road900 m away | 116 m² | 137 m² | +21 m² +18% | 2012 |
|---|
| 86, Chester Road707 m away | 90 m² | 110 m² | +20 m² +22% | 2026 |
|---|
| 296, Nightingale Road564 m away | 78 m² | 98 m² | +20 m² +26% | 2025 |
|---|
| 253, Hertford Road662 m away | 93 m² | 113 m² | +20 m² +22% | 2024 |
|---|
| 16, Forest Road506 m away | 71 m² | 91 m² | +20 m² +28% | 2021 |
|---|
| 34, Oaklands Avenue577 m away | 76 m² | 96 m² | +20 m² +26% | 2020 |
|---|
| 10, Allens Road934 m away | 77 m² | 97 m² | +20 m² +26% | 2020 |
|---|
| 22, Coniston Gardens530 m away | 115 m² | 135 m² | +20 m² +17% | 2019 |
|---|
| 445, Lincoln Road964 m away | 71 m² | 91 m² | +20 m² +28% | 2018 |
|---|
| 63, Lowden Road575 m away | 55 m² | 75 m² | +20 m² +36% | 2014 |
|---|
| 19, Nash Road864 m away | 77 m² | 97 m² | +20 m² +26% | 2014 |
|---|
| 99, Charlton Road449 m away | 67 m² | 87 m² | +20 m² +30% | 2011 |
|---|
| 34, Northfield Road799 m away | 75 m² | 95 m² | +20 m² +27% | 2010 |
|---|
| 2, Warren Close349 m away | 88 m² | 107 m² | +19 m² +22% | 2026 |
|---|
| 111, Nightingale Road162 m away | 76 m² | 95 m² | +19 m² +25% | 2025 |
|---|
| 23, Bath Road843 m away | 65 m² | 84 m² | +19 m² +29% | 2024 |
|---|
| 16, Bunting Close649 m away | 42 m² | 61 m² | +19 m² +45% | 2021 |
|---|
| 220, Bounces Road789 m away | 78 m² | 97 m² | +19 m² +24% | 2021 |
|---|
| 30, North Road668 m away | 81 m² | 100 m² | +19 m² +23% | 2020 |
|---|
| 29, Rydal Way714 m away | 40 m² | 59 m² | +19 m² +48% | 2020 |
|---|
| 72, Bounces Road852 m away | 64 m² | 83 m² | +19 m² +30% | 2020 |
|---|
| 43, Cornwallis Grove922 m away | 73 m² | 92 m² | +19 m² +26% | 2020 |
|---|
| 106, Church Road603 m away | 97 m² | 116 m² | +19 m² +20% | 2019 |
|---|
| 75, St Peters Road667 m away | 66 m² | 85 m² | +19 m² +29% | 2018 |
|---|
| 116, Church Road603 m away | 38 m² | 57 m² | +19 m² +50% | 2017 |
|---|
| 314, Nightingale Road564 m away | 74 m² | 92 m² | +18 m² +24% | 2026 |
|---|
| 165, Charlton Road466 m away | 92 m² | 110 m² | +18 m² +20% | 2025 |
|---|
| 87, Southfield Road735 m away | 89 m² | 107 m² | +18 m² +20% | 2023 |
|---|
| 2, Exeter Road852 m away | 82 m² | 100 m² | +18 m² +22% | 2021 |
|---|
| 13, Brierley Avenue545 m away | 59 m² | 77 m² | +18 m² +31% | 2019 |
|---|
| 40, Devonshire Road519 m away | 64 m² | 82 m² | +18 m² +28% | 2018 |
|---|
| 32, Cambourne Avenue343 m away | 64 m² | 82 m² | +18 m² +28% | 2016 |
|---|
| 7, Gordon Road952 m away | 65 m² | 83 m² | +18 m² +28% | 2015 |
|---|
| 15, Gordon Road952 m away | 78 m² | 96 m² | +18 m² +23% | 2014 |
|---|
| 49, Oxford Road966 m away | 73 m² | 91 m² | +18 m² +25% | 2014 |
|---|
| 182, Nightingale Road153 m away | 74 m² | 91 m² | +17 m² +23% | 2026 |
|---|
| 24, Elmcroft Avenue680 m away | 104 m² | 121 m² | +17 m² +16% | 2026 |
|---|
| 90, St Josephs Road293 m away | 72 m² | 89 m² | +17 m² +24% | 2025 |
|---|
| 259, Galliard Road665 m away | 72 m² | 89 m² | +17 m² +24% | 2025 |
|---|