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 CB21 5HJ
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 |
|---|---|---|---|---|
| 60, Cow Lane790 m away | 200 m² | 344 m² | +144 m² +72% | 2023 |
| 26, Impetts Lane832 m away | 156 m² | 300 m² | +144 m² +92% | 2021 |
| 14, Cambridge Road346 m away | 92 m² | 224 m² | +132 m² +143% | 2026 |
| 16, Teversham Road869 m away | 88 m² | 204 m² | +116 m² +132% | 2015 |
| 9a, Haggis Gap443 m away | 133 m² | 232 m² | +99 m² +74% | 2022 |
| 1, Greater Foxes741 m away | 85 m² | 171 m² | +86 m² +101% | 2026 |
| 38, Cow Lane790 m away | 160 m² | 246 m² | +86 m² +54% | 2025 |
| 40, Pierce Lane615 m away | 146 m² | 219 m² | +73 m² +50% | 2025 |
| 57, Cambridge Road137 m away | 83 m² | 144 m² | +61 m² +73% | 2020 |
| 1, Highfield Gate948 m away | 157 m² | 209 m² | +52 m² +33% | 2012 |
| 15, Cow Lane790 m away | 145 m² | 196 m² | +51 m² +35% | 2022 |
| 20, Dunmowe Way306 m away | 86 m² | 131 m² | +45 m² +52% | 2021 |
| 35, Hinton Road637 m away | 166 m² | 211 m² | +45 m² +27% | 2020 |
| 13, Cow Lane790 m away | 158 m² | 202 m² | +44 m² +28% | 2024 |
| 17, Bird Farm Road496 m away | 89 m² | 132 m² | +43 m² +48% | 2020 |
| 31, Pierce Lane534 m away | 86 m² | 129 m² | +43 m² +50% | 2014 |
| 10, The Croft411 m away | 97 m² | 137 m² | +40 m² +41% | 2024 |
| 1, Rushden Close726 m away | 73 m² | 110 m² | +37 m² +51% | 2021 |
| 24, Fromont Close88 m away | 86 m² | 121 m² | +35 m² +41% | 2019 |
| 18, Apthorpe Street830 m away | 165 m² | 194 m² | +29 m² +18% | 2022 |
| 52, Haggis Gap443 m away | 122 m² | 150 m² | +28 m² +23% | 2020 |
| 4, The Maples562 m away | 87 m² | 115 m² | +28 m² +32% | 2020 |
| 9, Cambridge Walk181 m away | 95 m² | 122 m² | +27 m² +28% | 2026 |
| 5, Bird Farm Road496 m away | 83 m² | 108 m² | +25 m² +30% | 2017 |
| 16, Bird Farm Road496 m away | 113 m² | 138 m² | +25 m² +22% | 2015 |
| 8, Greater Foxes741 m away | 79 m² | 104 m² | +25 m² +32% | 2015 |
| Stableyard, 16a, High Street771 m away | 112 m² | 136 m² | +24 m² +21% | 2020 |
| 12, Cambridge Road346 m away | 70 m² | 94 m² | +24 m² +34% | 2015 |
| 33, Huntsmill130 m away | 99 m² | 122 m² | +23 m² +23% | 2024 |
| 5, Oslars Way364 m away | 87 m² | 109 m² | +22 m² +25% | 2015 |
| 10, Huntsmill130 m away | 80 m² | 98 m² | +18 m² +23% | 2024 |
| 29, Huntsmill130 m away | 79 m² | 97 m² | +18 m² +23% | 2014 |
| 2, Manor Walk746 m away | 111 m² | 128 m² | +17 m² +15% | 2015 |
| 4, Impetts Lane832 m away | 100 m² | 116 m² | +16 m² +16% | 2022 |
| 9, Hinton Road637 m away | 88 m² | 104 m² | +16 m² +18% | 2012 |
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.