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 SG5 4LL
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 |
|---|---|---|---|---|
| 71, Vaughan Road635 m away | 62 m² | 153 m² | +91 m² +147% | 2026 |
| 7, Alexander Road310 m away | 92 m² | 182 m² | +90 m² +98% | 2020 |
| 38, Hitchin Road215 m away | 105 m² | 194 m² | +89 m² +85% | 2020 |
| 61, Vaughan Road518 m away | 85 m² | 173 m² | +88 m² +104% | 2020 |
| 1, Castles Close884 m away | 96 m² | 179 m² | +83 m² +86% | 2023 |
| 29, Coppice Mead391 m away | 72 m² | 143 m² | +71 m² +99% | 2021 |
| 15, The Green752 m away | 54 m² | 122 m² | +68 m² +126% | 2018 |
| 46, High Street0 m away | 113 m² | 180 m² | +67 m² +59% | 2023 |
| 42a, The Avenue215 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.
| 86 m² |
| 152 m² |
| +66 m² +77% |
| 2025 |
| 11, The Gardens448 m away | 99 m² | 163 m² | +64 m² +65% | 2018 |
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| 17, Home Close474 m away | 91 m² | 151 m² | +60 m² +66% | 2022 |
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| 25, The Crofts382 m away | 62 m² | 120 m² | +58 m² +94% | 2015 |
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| 20, Hitchin Road215 m away | 96 m² | 153 m² | +57 m² +59% | 2015 |
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| 8, The Gardens448 m away | 73 m² | 129 m² | +56 m² +77% | 2012 |
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| 16a, Church Road375 m away | 74 m² | 126 m² | +52 m² +70% | 2020 |
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| 11, Astwick Road963 m away | 88 m² | 139 m² | +51 m² +58% | 2025 |
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| 27, Valerian Way616 m away | 106 m² | 155 m² | +49 m² +46% | 2017 |
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| 54, Tansy Avenue519 m away | 113 m² | 160 m² | +47 m² +42% | 2026 |
|---|
| 34, Baldock Road870 m away | 161 m² | 206 m² | +45 m² +28% | 2019 |
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| 30, Rook Tree Lane603 m away | 121 m² | 166 m² | +45 m² +37% | 2018 |
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| 3, Melbourne Close196 m away | 73 m² | 117 m² | +44 m² +60% | 2026 |
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| 13, Hazel Grove431 m away | 129 m² | 173 m² | +44 m² +34% | 2024 |
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| 16, Dane Close973 m away | 72 m² | 116 m² | +44 m² +61% | 2017 |
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| 12, Netherstones648 m away | 100 m² | 142 m² | +42 m² +42% | 2021 |
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| 2, Campion Avenue567 m away | 170 m² | 212 m² | +42 m² +25% | 2020 |
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| 26, Tansy Avenue519 m away | 83 m² | 124 m² | +41 m² +49% | 2026 |
|---|
| 16a, High Street0 m away | 104 m² | 145 m² | +41 m² +39% | 2019 |
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| 14, Common Road730 m away | 86 m² | 125 m² | +39 m² +45% | 2014 |
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| 32, Grange Drive322 m away | 156 m² | 192 m² | +36 m² +23% | 2026 |
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| 18, Common Road730 m away | 79 m² | 115 m² | +36 m² +46% | 2025 |
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| 36, Valerian Way474 m away | 129 m² | 165 m² | +36 m² +28% | 2020 |
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| 188, Hitchin Road758 m away | 70 m² | 106 m² | +36 m² +51% | 2019 |
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| 19, The Gardens448 m away | 76 m² | 111 m² | +35 m² +46% | 2017 |
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| 5, Chamomile Way352 m away | 115 m² | 149 m² | +34 m² +30% | 2020 |
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| 6, Saxon Avenue994 m away | 82 m² | 116 m² | +34 m² +41% | 2020 |
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| 2, Cowslip Drive570 m away | 76 m² | 110 m² | +34 m² +45% | 2010 |
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| 6, Mill Close682 m away | 76 m² | 109 m² | +33 m² +43% | 2025 |
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| 38, Common Road845 m away | 98 m² | 131 m² | +33 m² +34% | 2022 |
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| 4, The Coppens777 m away | 84 m² | 116 m² | +32 m² +38% | 2026 |
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| 10, Queen Annes Close542 m away | 107 m² | 139 m² | +32 m² +30% | 2024 |
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| 27, Kingsway557 m away | 84 m² | 115 m² | +31 m² +37% | 2015 |
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| 9, Harebell Avenue295 m away | 67 m² | 96 m² | +29 m² +43% | 2018 |
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| 11, Rook Tree Lane603 m away | 84 m² | 113 m² | +29 m² +35% | 2016 |
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| 12, Castles Close918 m away | 92 m² | 121 m² | +29 m² +32% | 2016 |
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| 50, Trinity Road582 m away | 93 m² | 121 m² | +28 m² +30% | 2024 |
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| 30, High Street0 m away | 176 m² | 204 m² | +28 m² +16% | 2022 |
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| 1, Upperstone Close178 m away | 42 m² | 70 m² | +28 m² +67% | 2010 |
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| 10, Mill Close682 m away | 81 m² | 107 m² | +26 m² +32% | 2022 |
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| 61, Rook Tree Lane548 m away | 104 m² | 130 m² | +26 m² +25% | 2021 |
|---|
| 36, Meadowsweet Way259 m away | 67 m² | 92 m² | +25 m² +37% | 2025 |
|---|
| 18, Brayes Manor506 m away | 48 m² | 73 m² | +25 m² +52% | 2024 |
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| 7, St Marys Avenue507 m away | 119 m² | 144 m² | +25 m² +21% | 2022 |
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| 63, Mowbray Crescent452 m away | 107 m² | 132 m² | +25 m² +23% | 2021 |
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| 40, Baldock Road870 m away | 127 m² | 152 m² | +25 m² +20% | 2020 |
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| 97, The Green643 m away | 110 m² | 135 m² | +25 m² +23% | 2016 |
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| 12, Coppice Mead275 m away | 100 m² | 125 m² | +25 m² +25% | 2015 |
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| 162b, Hitchin Road758 m away | 42 m² | 66 m² | +24 m² +57% | 2023 |
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| 43, Baldock Road870 m away | 82 m² | 105 m² | +23 m² +28% | 2014 |
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| 21, Arlesey Road368 m away | 139 m² | 161 m² | +22 m² +16% | 2026 |
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| 19, Church Road286 m away | 58 m² | 80 m² | +22 m² +38% | 2024 |
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| 2, Blacksmiths Close567 m away | 64 m² | 85 m² | +21 m² +33% | 2024 |
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| 1, Speedwell Way573 m away | 68 m² | 89 m² | +21 m² +31% | 2024 |
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| 11, The Green752 m away | 57 m² | 78 m² | +21 m² +37% | 2022 |
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| 116, Hitchin Road495 m away | 82 m² | 103 m² | +21 m² +26% | 2016 |
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| 5, Roe Close477 m away | 95 m² | 115 m² | +20 m² +21% | 2021 |
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| 2, Chequers Close576 m away | 57 m² | 77 m² | +20 m² +35% | 2016 |
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| 51, Coppice Mead391 m away | 72 m² | 92 m² | +20 m² +28% | 2014 |
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| 142, Hitchin Road758 m away | 82 m² | 101 m² | +19 m² +23% | 2019 |
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| 20, Hyde Avenue754 m away | 78 m² | 96 m² | +18 m² +23% | 2010 |
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| 14, Baldock Road684 m away | 89 m² | 106 m² | +17 m² +19% | 2023 |
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| 13, Netherstones648 m away | 86 m² | 103 m² | +17 m² +20% | 2022 |
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| 2a, Regent Street204 m away | 87 m² | 104 m² | +17 m² +20% | 2021 |
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| 14, Hyde Avenue754 m away | 76 m² | 92 m² | +16 m² +21% | 2026 |
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| 21, The Mixies87 m away | 68 m² | 84 m² | +16 m² +24% | 2021 |
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| 4, Trinity Road411 m away | 71 m² | 87 m² | +16 m² +23% | 2017 |
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| 11, Heron Way342 m away | 82 m² | 98 m² | +16 m² +20% | 2016 |
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| 96, Vaughan Road751 m away | 79 m² | 95 m² | +16 m² +20% | 2016 |
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