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 PO1 3JH
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 |
|---|---|---|---|---|
| 229 - 231, Commercial Road940 m away | 68 m² | 112 m² | +44 m² +65% | 2025 |
| 1, The Gieves Apartments, 23, The Hard461 m away | 57 m² | 93 m² | +36 m² +63% | 2021 |
| 27, The Vulcan, Gunwharf Quays833 m away | 98 m² | 134 m² | +36 m² +37% | 2019 |
| Apartment 19, Charter House, Lord Montgomery Way774 m away | 56 m² | 90 m² | +34 m² +61% | 2020 |
| 6, St Thomass Court973 m away | 55 m² | 89 m² | +34 m² +62% | 2008 |
| 86, Astley Street992 m away | 42 m² | 75 m² | +33 m² +79% | 2021 |
| 1, Nobbs Lane908 m away | 109 m² | 141 m² | +32 m² +29% | 2015 |
| 4, Minerva Crescent821 m away | 123 m² | 154 m² | +31 m² +25% | 2024 |
| Flat 44, Arethusa House, Gunwharf Quays |
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.
| 72 m² |
| 103 m² |
| +31 m² +43% |
| 2020 |
| 10, Unicorn House, Cross Street171 m away | 40 m² | 70 m² | +30 m² +75% | 2024 |
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| 70x, St Pauls Road946 m away | 69 m² | 97 m² | +28 m² +41% | 2019 |
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| Flat 25, Jupiter Court, Gunwharf Quays810 m away | 50 m² | 77 m² | +27 m² +54% | 2018 |
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| 113, St Pauls Road912 m away | 67 m² | 93 m² | +26 m² +39% | 2025 |
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| 34, The Vulcan, Gunwharf Quays833 m away | 76 m² | 102 m² | +26 m² +34% | 2020 |
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| Lower Maisonette, 20, Queen Street222 m away | 53 m² | 79 m² | +26 m² +49% | 2017 |
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| 26, Mermaid House, Cross Street161 m away | 43 m² | 66 m² | +23 m² +53% | 2021 |
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| 70a, St Pauls Road946 m away | 67 m² | 90 m² | +23 m² +34% | 2021 |
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| 1, Perseus Terrace893 m away | 141 m² | 164 m² | +23 m² +16% | 2020 |
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| 19, Mermaid House, Cross Street161 m away | 43 m² | 65 m² | +22 m² +51% | 2026 |
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| 4, Perseus Terrace893 m away | 144 m² | 166 m² | +22 m² +15% | 2024 |
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| 8, The Annexe, Landport Street982 m away | 79 m² | 101 m² | +22 m² +28% | 2022 |
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| 3, Bishop Street209 m away | 62 m² | 84 m² | +22 m² +35% | 2021 |
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| 8, Centurion Court, The Canalside692 m away | 60 m² | 82 m² | +22 m² +37% | 2021 |
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| 67, St Pauls Road912 m away | 86 m² | 107 m² | +21 m² +24% | 2025 |
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| 21, Admiralty Tower, Queen Street250 m away | 42 m² | 63 m² | +21 m² +50% | 2019 |
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| Flat 26, Arethusa House, Gunwharf Quays932 m away | 87 m² | 108 m² | +21 m² +24% | 2008 |
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| Flat 25, Blake House, Gunwharf Quays881 m away | 105 m² | 125 m² | +20 m² +19% | 2026 |
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| 38, Mermaid House, Cross Street161 m away | 43 m² | 63 m² | +20 m² +47% | 2021 |
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| 8, Neptune Court, Gunwharf Quays867 m away | 64 m² | 84 m² | +20 m² +31% | 2021 |
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| 5, Brunswick House, Queen Street216 m away | 41 m² | 61 m² | +20 m² +49% | 2019 |
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| 12, Marlborough House, Admiralty Road244 m away | 26 m² | 46 m² | +20 m² +77% | 2019 |
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| Flat 23, Jacob House, Aylward Street236 m away | 47 m² | 67 m² | +20 m² +43% | 2009 |
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| Flat 4, Harbour Ridge, 163, Queen Street122 m away | 56 m² | 75 m² | +19 m² +34% | 2008 |
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| 25, Marlborough House, Admiralty Road244 m away | 47 m² | 65 m² | +18 m² +38% | 2025 |
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| Flat 36, Arethusa House, Gunwharf Quays932 m away | 69 m² | 87 m² | +18 m² +26% | 2025 |
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| 39, Armory Lane833 m away | 117 m² | 135 m² | +18 m² +15% | 2020 |
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| Flat 6, Walton Court, King Charles Street952 m away | 60 m² | 78 m² | +18 m² +30% | 2020 |
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| Flat 2, The Round House, Gunwharf Quays575 m away | 60 m² | 78 m² | +18 m² +30% | 2018 |
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| 38, Hamburg House, Cross Street155 m away | 49 m² | 66 m² | +17 m² +35% | 2020 |
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| Flat 3, Centurion Court, The Canalside692 m away | 54 m² | 71 m² | +17 m² +31% | 2020 |
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| Flat 13, Harbour Ridge, 163, Queen Street122 m away | 46 m² | 63 m² | +17 m² +37% | 2019 |
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| 109, St Pauls Road912 m away | 87 m² | 104 m² | +17 m² +20% | 2019 |
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| 28, Marlborough House, Admiralty Road244 m away | 26 m² | 43 m² | +17 m² +65% | 2018 |
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| 13, Cumberland Street115 m away | 73 m² | 90 m² | +17 m² +23% | 2015 |
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| Flat 3, Warrior House, 12 - 14, The Hard464 m away | 70 m² | 87 m² | +17 m² +24% | 2011 |
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| Flat 10, Avalon House, 2, Surrey Street746 m away | 42 m² | 59 m² | +17 m² +40% | 2009 |
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| Flat 3, 1, Prince George Street114 m away | 35 m² | 51 m² | +16 m² +46% | 2021 |
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| Flat 29, Blake House, Gunwharf Quays881 m away | 87 m² | 103 m² | +16 m² +18% | 2021 |
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| 17, Gloucester House, Queen Street186 m away | 62 m² | 78 m² | +16 m² +26% | 2020 |
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| 28, Regency Court, King Charles Street978 m away | 62 m² | 78 m² | +16 m² +26% | 2020 |
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| Flat 9, 12, Hampshire Terrace866 m away | 62 m² | 78 m² | +16 m² +26% | 2019 |
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| Apartment 31, Charter House, Lord Montgomery Way774 m away | 54 m² | 70 m² | +16 m² +30% | 2010 |
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| 6, St James'S Street189 m away | 73 m² | 88 m² | +15 m² +21% | 2025 |
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| Flat 27, Harbour Ridge, 163, Queen Street122 m away | 65 m² | 80 m² | +15 m² +23% | 2024 |
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| 103, St Pauls Road912 m away | 91 m² | 106 m² | +15 m² +16% | 2022 |
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| 1, Victory Road464 m away | 64 m² | 79 m² | +15 m² +23% | 2021 |
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| 5, A'Becket Court938 m away | 88 m² | 103 m² | +15 m² +17% | 2020 |
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| 30, Mermaid House, Cross Street161 m away | 43 m² | 58 m² | +15 m² +35% | 2019 |
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| Flat 6, Blake House, Gunwharf Quays881 m away | 69 m² | 84 m² | +15 m² +22% | 2019 |
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