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 BN42 4DF
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 |
|---|---|---|---|---|
| 31, Croft Avenue529 m away | 129 m² | 260 m² | +131 m² +102% | 2015 |
| 8, St Julians Lane444 m away | 122 m² | 236 m² | +114 m² +93% | 2025 |
| 2, Southwick Street331 m away | 125 m² | 232 m² | +107 m² +86% | 2014 |
| 36, Oldfield Crescent405 m away | 128 m² | 229 m² | +101 m² +79% | 2024 |
| 1, Old Rectory Gardens496 m away | 86 m² | 187 m² | +101 m² +117% | 2024 |
| 7, Southdown Road443 m away | 220 m² | 306 m² | +86 m² +39% | 2021 |
| 26, Manor Hall Road682 m away | 87 m² | 161 m² | +74 m² +85% | 2015 |
| The Old Rectory Cottage, 55c, Kingston Lane405 m away | 75 m² | 147 m² | +72 m² +96% | 2021 |
| 4, Roman Road865 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.
| 69 m² |
| 140 m² |
| +71 m² +103% |
| 2020 |
| 5, Sandown Road519 m away | 70 m² | 141 m² | +71 m² +101% | 2017 |
|---|
| 19, Southview Close940 m away | 70 m² | 136 m² | +66 m² +94% | 2011 |
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| 36, Cross Road676 m away | 94 m² | 158 m² | +64 m² +68% | 2015 |
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| 81, The Crescent867 m away | 100 m² | 163 m² | +63 m² +63% | 2022 |
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| 8, Old Shoreham Road933 m away | 74 m² | 132 m² | +58 m² +78% | 2015 |
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| 11, The Crescent867 m away | 97 m² | 151 m² | +54 m² +56% | 2025 |
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| 24, Rectory Road579 m away | 91 m² | 143 m² | +52 m² +57% | 2026 |
|---|
| 70, Underdown Road731 m away | 107 m² | 158 m² | +51 m² +48% | 2025 |
|---|
| 39, The Green189 m away | 38 m² | 85 m² | +47 m² +124% | 2023 |
|---|
| 84, Southview Road801 m away | 135 m² | 182 m² | +47 m² +35% | 2022 |
|---|
| 5, Park Way909 m away | 67 m² | 114 m² | +47 m² +70% | 2019 |
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| 19, Seaview Estate835 m away | 106 m² | 151 m² | +45 m² +42% | 2024 |
|---|
| 6, Phoenix Way720 m away | 59 m² | 102 m² | +43 m² +73% | 2022 |
|---|
| 48, Roman Way740 m away | 94 m² | 137 m² | +43 m² +46% | 2020 |
|---|
| 2, Larke Close678 m away | 77 m² | 119 m² | +42 m² +55% | 2022 |
|---|
| 2, Old Rectory Gardens496 m away | 103 m² | 144 m² | +41 m² +40% | 2018 |
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| 317, Albion Street623 m away | 81 m² | 118 m² | +37 m² +46% | 2026 |
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| 5, Spinnals Grove325 m away | 128 m² | 165 m² | +37 m² +29% | 2022 |
|---|
| 20, Sandown Road519 m away | 103 m² | 138 m² | +35 m² +34% | 2018 |
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| 23, The Gardens653 m away | 60 m² | 94 m² | +34 m² +57% | 2026 |
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| 2, The Barn, The Green313 m away | 106 m² | 139 m² | +33 m² +31% | 2017 |
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| 46, Southwick Street571 m away | 93 m² | 126 m² | +33 m² +35% | 2014 |
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| 311, Albion Street623 m away | 77 m² | 109 m² | +32 m² +42% | 2019 |
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| 17, Southview Road623 m away | 49 m² | 81 m² | +32 m² +65% | 2016 |
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| 77, Meadway Court495 m away | 45 m² | 77 m² | +32 m² +71% | 2015 |
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| 110, Southwick Street813 m away | 82 m² | 114 m² | +32 m² +39% | 2015 |
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| 23, Orchard Close911 m away | 72 m² | 104 m² | +32 m² +44% | 2014 |
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| 49, Kingston Lane757 m away | 137 m² | 169 m² | +32 m² +23% | 2013 |
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| 34, Roman Way740 m away | 85 m² | 115 m² | +30 m² +35% | 2024 |
|---|
| 71, Franklin Road982 m away | 64 m² | 94 m² | +30 m² +47% | 2024 |
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| 21, Underdown Road766 m away | 88 m² | 117 m² | +29 m² +33% | 2026 |
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| 15, Querneby Close555 m away | 88 m² | 117 m² | +29 m² +33% | 2015 |
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| 82, The Gardens676 m away | 81 m² | 110 m² | +29 m² +36% | 2014 |
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| 19, The Green114 m away | 130 m² | 158 m² | +28 m² +22% | 2025 |
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| 56, Kingston Lane831 m away | 88 m² | 116 m² | +28 m² +32% | 2025 |
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| 19, Cross Road615 m away | 123 m² | 151 m² | +28 m² +23% | 2018 |
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| 39, Underdown Road766 m away | 85 m² | 112 m² | +27 m² +32% | 2020 |
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| 25, Roman Way740 m away | 101 m² | 127 m² | +26 m² +26% | 2025 |
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| 104, Southwick Street813 m away | 81 m² | 107 m² | +26 m² +32% | 2024 |
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| 7, Parklands985 m away | 25 m² | 51 m² | +26 m² +104% | 2023 |
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| 32, Victoria Road100 m away | 122 m² | 148 m² | +26 m² +21% | 2022 |
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| 4, Ashcroft Close536 m away | 62 m² | 88 m² | +26 m² +42% | 2020 |
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| 26, Cross Road676 m away | 87 m² | 113 m² | +26 m² +30% | 2019 |
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| 21, Cross Road615 m away | 115 m² | 141 m² | +26 m² +23% | 2017 |
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| 35, Franklin Road982 m away | 82 m² | 107 m² | +25 m² +30% | 2026 |
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| 107, Manor Hall Road986 m away | 145 m² | 170 m² | +25 m² +17% | 2026 |
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| 60, Southwick Street813 m away | 110 m² | 135 m² | +25 m² +23% | 2025 |
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| 59, Kingston Lane405 m away | 74 m² | 99 m² | +25 m² +34% | 2021 |
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| 23, Whiterock Place434 m away | 62 m² | 87 m² | +25 m² +40% | 2021 |
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| 58, Underdown Road731 m away | 69 m² | 94 m² | +25 m² +36% | 2015 |
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| 28, Croft Avenue500 m away | 124 m² | 149 m² | +25 m² +20% | 2014 |
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| 74, Downland Avenue997 m away | 89 m² | 114 m² | +25 m² +28% | 2012 |
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| 275, Albion Street623 m away | 89 m² | 113 m² | +24 m² +27% | 2020 |
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| 49, The Gardens653 m away | 79 m² | 102 m² | +23 m² +29% | 2021 |
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| 43, Kingston Lane757 m away | 75 m² | 98 m² | +23 m² +31% | 2015 |
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| 17, Querneby Close555 m away | 57 m² | 78 m² | +21 m² +37% | 2022 |
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| 155b, Middle Road848 m away | 69 m² | 90 m² | +21 m² +30% | 2022 |
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| 12, Amelia Close424 m away | 61 m² | 82 m² | +21 m² +34% | 2019 |
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| 4, Albert Road185 m away | 96 m² | 116 m² | +20 m² +21% | 2026 |
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| 28a, Victoria Road100 m away | 49 m² | 69 m² | +20 m² +41% | 2025 |
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| Flat 2, 96, Cross Road849 m away | 43 m² | 63 m² | +20 m² +47% | 2020 |
|---|
| 1, Twitten Close213 m away | 104 m² | 124 m² | +20 m² +19% | 2019 |
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| 114, Old Shoreham Road911 m away | 104 m² | 123 m² | +19 m² +18% | 2018 |
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| 36, Stoney Lane992 m away | 83 m² | 102 m² | +19 m² +23% | 2016 |
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| 163, Middle Road848 m away | 83 m² | 101 m² | +18 m² +22% | 2020 |
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| 3, Albert Road185 m away | 95 m² | 112 m² | +17 m² +18% | 2026 |
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| 126, The Gardens863 m away | 72 m² | 89 m² | +17 m² +24% | 2020 |
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| 94, Old Shoreham Road933 m away | 78 m² | 95 m² | +17 m² +22% | 2020 |
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| 42, Phoenix Way614 m away | 85 m² | 101 m² | +16 m² +19% | 2025 |
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| 7, Water Dyke Avenue0 m away | 60 m² | 76 m² | +16 m² +27% | 2022 |
|---|
| 53, The Green189 m away | 75 m² | 91 m² | +16 m² +21% | 2021 |
|---|
| 133, The Gardens889 m away | 72 m² | 88 m² | +16 m² +22% | 2020 |
|---|
| 18, Southview Close940 m away | 68 m² | 83 m² | +15 m² +22% | 2025 |
|---|
| 9, Southview Close940 m away | 74 m² | 89 m² | +15 m² +20% | 2016 |
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| 37, King George Road929 m away | 70 m² | 85 m² | +15 m² +21% | 2015 |
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