Finding extended homes…
These only choose where you start. Every page and every lens is still one tap away.
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 BN21 3DF
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 |
|---|---|---|---|---|
| Flat 1, 13, Arlington Road928 m away | 152 m² | 305 m² | +153 m² +101% | 2022 |
| 20, Furness Road706 m away | 84 m² | 199 m² | +115 m² +137% | 2025 |
| 12a, Grove Road698 m away | 130 m² | 230 m² | +100 m² +77% | 2025 |
| The Tiles, 2, Furness Road706 m away | 120 m² | 212 m² | +92 m² +77% | 2024 |
| 95, Pevensey Road491 m away | 152 m² | 242 m² | +90 m² +59% | 2020 |
| Flat 54, Devonshire Mansions, 54, Grand Parade524 m away | 77 m² | 162 m² | +85 m² +110% | 2011 |
| 97, Ashford Road499 m away | 66 m² | 141 m² | +75 m² +114% | 2023 |
| 8, College Road603 m away | 120 m² | 193 m² | +73 m² +61% | 2012 |
| 38, Winchcombe Road733 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.
| 74 m² |
| 144 m² |
| +70 m² +95% |
| 2013 |
| 7, West Terrace657 m away | 128 m² | 197 m² | +69 m² +54% | 2025 |
|---|
| Flat 2, Ayra Court, 1, South Cliff976 m away | 134 m² | 202 m² | +68 m² +51% | 2011 |
|---|
| 9, Willowfield Square658 m away | 104 m² | 171 m² | +67 m² +64% | 2008 |
|---|
| 68, Grove Road761 m away | 47 m² | 113 m² | +66 m² +140% | 2015 |
|---|
| Flat 10, Lamont Court, 15 - 16, Wilmington Square704 m away | 76 m² | 139 m² | +63 m² +83% | 2025 |
|---|
| Highgates, Cambridge Mews, Rylstone Road951 m away | 169 m² | 229 m² | +60 m² +36% | 2014 |
|---|
| 14, Arlington Road928 m away | 331 m² | 388 m² | +57 m² +17% | 2019 |
|---|
| 35, Pevensey Road219 m away | 37 m² | 92 m² | +55 m² +149% | 2023 |
|---|
| 43, Pevensey Road219 m away | 180 m² | 233 m² | +53 m² +29% | 2025 |
|---|
| 1, Elms Avenue106 m away | 93 m² | 145 m² | +52 m² +56% | 2026 |
|---|
| 24, Grange Road988 m away | 278 m² | 330 m² | +52 m² +19% | 2025 |
|---|
| 18a, Cornfield Terrace339 m away | 137 m² | 189 m² | +52 m² +38% | 2013 |
|---|
| 91, Firle Road900 m away | 59 m² | 109 m² | +50 m² +85% | 2021 |
|---|
| 24, Furness Road706 m away | 238 m² | 288 m² | +50 m² +21% | 2018 |
|---|
| 9, Willowfield Road571 m away | 156 m² | 206 m² | +50 m² +32% | 2010 |
|---|
| 44, Cavendish Place253 m away | 170 m² | 218 m² | +48 m² +28% | 2019 |
|---|
| Flat 1, Pearl Court, Devonshire Place303 m away | 119 m² | 167 m² | +48 m² +40% | 2017 |
|---|
| 158, Ashford Road542 m away | 53 m² | 99 m² | +46 m² +87% | 2020 |
|---|
| 7, Lushington Road448 m away | 72 m² | 118 m² | +46 m² +64% | 2011 |
|---|
| 78, Firle Road904 m away | 49 m² | 94 m² | +45 m² +92% | 2023 |
|---|
| 32, Cambridge Road881 m away | 71 m² | 116 m² | +45 m² +63% | 2011 |
|---|
| 89a, South Street494 m away | 59 m² | 104 m² | +45 m² +76% | 2010 |
|---|
| 20, Arlington Road928 m away | 43 m² | 86 m² | +43 m² +100% | 2014 |
|---|
| 2, Hampden Terrace816 m away | 34 m² | 77 m² | +43 m² +126% | 2009 |
|---|
| Flat 37, Westdown House, Hartington Place110 m away | 74 m² | 116 m² | +42 m² +57% | 2024 |
|---|
| 7, Cavendish Avenue685 m away | 120 m² | 162 m² | +42 m² +35% | 2023 |
|---|
| 7, Bedfordwell Road962 m away | 115 m² | 156 m² | +41 m² +36% | 2025 |
|---|
| 85, Langney Road377 m away | 116 m² | 157 m² | +41 m² +35% | 2024 |
|---|
| 64, Seaside571 m away | 64 m² | 105 m² | +41 m² +64% | 2022 |
|---|
| 15, St Aubyns Road718 m away | 145 m² | 186 m² | +41 m² +28% | 2014 |
|---|
| 93, Pevensey Road491 m away | 35 m² | 74 m² | +39 m² +111% | 2012 |
|---|
| Flat 4, 24, Upperton Gardens890 m away | 74 m² | 112 m² | +38 m² +51% | 2025 |
|---|
| 19, Western Road961 m away | 83 m² | 121 m² | +38 m² +46% | 2022 |
|---|
| 11, West Terrace657 m away | 56 m² | 94 m² | +38 m² +68% | 2020 |
|---|
| 28, St Leonards Road682 m away | 40 m² | 78 m² | +38 m² +95% | 2015 |
|---|
| Flat 2, 26, Seaside Road100 m away | 59 m² | 96 m² | +37 m² +63% | 2024 |
|---|
| 46, Longstone Road402 m away | 64 m² | 101 m² | +37 m² +58% | 2023 |
|---|
| Flat 3, 4, Upperton Gardens890 m away | 74 m² | 111 m² | +37 m² +50% | 2016 |
|---|
| 30, Old Orchard Road807 m away | 72 m² | 109 m² | +37 m² +51% | 2015 |
|---|
| 15, Hoad Road923 m away | 66 m² | 103 m² | +37 m² +56% | 2014 |
|---|
| 2, Chawbrook Mews, Chawbrook Road967 m away | 47 m² | 84 m² | +37 m² +79% | 2014 |
|---|
| 87, Bourne Street616 m away | 90 m² | 126 m² | +36 m² +40% | 2022 |
|---|
| Flat 5, 1c, Susans Road133 m away | 33 m² | 68 m² | +35 m² +106% | 2022 |
|---|
| Flat 1, Alastair Court, 30, Compton Street908 m away | 104 m² | 139 m² | +35 m² +34% | 2022 |
|---|
| Flat 1, 11, Southfields Road922 m away | 95 m² | 130 m² | +35 m² +37% | 2018 |
|---|
| 25, Elms Avenue106 m away | 153 m² | 187 m² | +34 m² +22% | 2021 |
|---|
| 176 - 180, Terminus Road105 m away | 43 m² | 77 m² | +34 m² +79% | 2013 |
|---|
| 87, Firle Road880 m away | 120 m² | 153 m² | +33 m² +28% | 2026 |
|---|
| 3, Oxford Road930 m away | 67 m² | 100 m² | +33 m² +49% | 2015 |
|---|
| 11, West Street Mews604 m away | 31 m² | 63 m² | +32 m² +103% | 2024 |
|---|
| 38, Willowfield Road810 m away | 48 m² | 80 m² | +32 m² +67% | 2018 |
|---|
| Flat 4a, Avenue Mansions, Elms Avenue129 m away | 80 m² | 111 m² | +31 m² +39% | 2025 |
|---|
| 9, Winchcombe Road733 m away | 93 m² | 124 m² | +31 m² +33% | 2023 |
|---|
| 23, Cavendish Avenue685 m away | 99 m² | 130 m² | +31 m² +31% | 2022 |
|---|
| Flat 24a, Victoria Mansions, 208, Terminus Road0 m away | 78 m² | 109 m² | +31 m² +40% | 2021 |
|---|
| 7, Willowfield Road571 m away | 147 m² | 177 m² | +30 m² +20% | 2025 |
|---|
| Flat 1, 5, Spencer Road553 m away | 55 m² | 85 m² | +30 m² +55% | 2019 |
|---|
| Flat 7, Delamere Court, Hyde Road588 m away | 54 m² | 84 m² | +30 m² +56% | 2015 |
|---|
| 10, College Road603 m away | 182 m² | 211 m² | +29 m² +16% | 2025 |
|---|
| 8, Montgomery Mews, Commercial Road622 m away | 61 m² | 90 m² | +29 m² +48% | 2025 |
|---|
| Flat 26, Sussex House, Hartington Place162 m away | 49 m² | 78 m² | +29 m² +59% | 2018 |
|---|
| 21, Willowfield Square658 m away | 130 m² | 159 m² | +29 m² +22% | 2014 |
|---|
| Flat 4, 9, Grange Gardens876 m away | 130 m² | 159 m² | +29 m² +22% | 2014 |
|---|
| 11, Carlisle Road594 m away | 32 m² | 61 m² | +29 m² +91% | 2010 |
|---|
| Flat 6, Valentine Court, South Street473 m away | 68 m² | 96 m² | +28 m² +41% | 2020 |
|---|
| 35, Willowfield Road666 m away | 110 m² | 138 m² | +28 m² +25% | 2020 |
|---|
| 14, Cornfield Terrace339 m away | 39 m² | 67 m² | +28 m² +72% | 2009 |
|---|
| 44, Susans Road360 m away | 99 m² | 126 m² | +27 m² +27% | 2024 |
|---|
| 68, Susans Road438 m away | 68 m² | 95 m² | +27 m² +40% | 2023 |
|---|
| Flat 4, Pebble Court, 16, Bourne Street401 m away | 20 m² | 47 m² | +27 m² +135% | 2019 |
|---|
| Flat 2, Hadley House, Upperton Road851 m away | 84 m² | 111 m² | +27 m² +32% | 2013 |
|---|
| Flat 2, 58, Tideswell Road331 m away | 51 m² | 77 m² | +26 m² +51% | 2025 |
|---|
| Flat 5, Pegasus Court, 29, St Leonards Road746 m away | 43 m² | 69 m² | +26 m² +60% | 2023 |
|---|
| Flat 1, 17, Old Orchard Road807 m away | 107 m² | 133 m² | +26 m² +24% | 2022 |
|---|
| 3, Susans Road133 m away | 79 m² | 105 m² | +26 m² +33% | 2017 |
|---|
| 123, Tideswell Road348 m away | 131 m² | 157 m² | +26 m² +20% | 2014 |
|---|
| Flat 6, Hadley House, Upperton Road851 m away | 85 m² | 111 m² | +26 m² +31% | 2013 |
|---|
| Flat 5, Miramar House West, 2, Grand Parade230 m away | 44 m² | 70 m² | +26 m² +59% | 2012 |
|---|
| Flat 9, Metropole Court, Royal Parade578 m away | 99 m² | 124 m² | +25 m² +25% | 2023 |
|---|
| 20, Dursley Road713 m away | 63 m² | 88 m² | +25 m² +40% | 2014 |
|---|
| 20, Eversfield Road898 m away | 39 m² | 64 m² | +25 m² +64% | 2010 |
|---|
| 6, Marine Parade357 m away | 43 m² | 68 m² | +25 m² +58% | 2009 |
|---|
| 8b, Willowfield Road571 m away | 68 m² | 92 m² | +24 m² +35% | 2023 |
|---|
| 91, Langney Road377 m away | 122 m² | 146 m² | +24 m² +20% | 2022 |
|---|
| Flat 4, Central Court, 13, South Street739 m away | 52 m² | 76 m² | +24 m² +46% | 2021 |
|---|
| 48, Winchcombe Road733 m away | 72 m² | 96 m² | +24 m² +33% | 2019 |
|---|
| 68, Cavendish Avenue816 m away | 141 m² | 165 m² | +24 m² +17% | 2015 |
|---|
| Flat 14, Eversfield House, The Avenue845 m away | 61 m² | 85 m² | +24 m² +39% | 2013 |
|---|
| 122, Seaside Road347 m away | 29 m² | 53 m² | +24 m² +83% | 2012 |
|---|
| 98a, Ashford Road447 m away | 63 m² | 87 m² | +24 m² +38% | 2011 |
|---|
| 31, Pevensey Road219 m away | 30 m² | 54 m² | +24 m² +80% | 2009 |
|---|
| 21, Pearl Court, Cornfield Terrace303 m away | 125 m² | 148 m² | +23 m² +18% | 2025 |
|---|
| 12, Sheen Road809 m away | 71 m² | 94 m² | +23 m² +32% | 2024 |
|---|
| 25, Firle Road849 m away | 74 m² | 97 m² | +23 m² +31% | 2023 |
|---|
| 5, St Georges Road805 m away | 83 m² | 106 m² | +23 m² +28% | 2021 |
|---|
| Flat 5, Thornwood, The Avenue827 m away | 51 m² | 74 m² | +23 m² +45% | 2021 |
|---|
| 5, Eton Mews670 m away | 69 m² | 92 m² | +23 m² +33% | 2020 |
|---|
| Flat 2, 26b, Cavendish Place227 m away | 103 m² | 126 m² | +23 m² +22% | 2011 |
|---|
| 105, Whitley Road989 m away | 132 m² | 154 m² | +22 m² +17% | 2026 |
|---|
| Flat 4, 5, Compton Street285 m away | 38 m² | 60 m² | +22 m² +58% | 2024 |
|---|
| Flat 2, Central Court, 13, South Street739 m away | 51 m² | 73 m² | +22 m² +43% | 2022 |
|---|
| 7b, Bolton Road287 m away | 34 m² | 56 m² | +22 m² +65% | 2019 |
|---|
| Flat 6, 32, Grange Road988 m away | 53 m² | 75 m² | +22 m² +42% | 2014 |
|---|
| Flat 5c, Clovelly, 20, Blackwater Road694 m away | 55 m² | 77 m² | +22 m² +40% | 2010 |
|---|
| 4a, Wellesley Road400 m away | 59 m² | 80 m² | +21 m² +36% | 2025 |
|---|
| Flat 8, Chartwell House, 1a, Wharf Road801 m away | 47 m² | 68 m² | +21 m² +45% | 2024 |
|---|
| 16, Cavendish Avenue664 m away | 124 m² | 145 m² | +21 m² +17% | 2023 |
|---|
| Flat 8, The Church, 16, Ceylon Place350 m away | 127 m² | 148 m² | +21 m² +17% | 2022 |
|---|
| 65, Seaside Road144 m away | 30 m² | 51 m² | +21 m² +70% | 2021 |
|---|
| 16a, Compton Street758 m away | 66 m² | 87 m² | +21 m² +32% | 2020 |
|---|
| Flat 10, Eversfield House, The Avenue845 m away | 64 m² | 85 m² | +21 m² +33% | 2013 |
|---|
| 243, Terminus Road57 m away | 42 m² | 63 m² | +21 m² +50% | 2012 |
|---|
| 30, Grove Road690 m away | 64 m² | 85 m² | +21 m² +33% | 2010 |
|---|
| Flat 10, Jevington Place, Jevington Gardens913 m away | 105 m² | 125 m² | +20 m² +19% | 2026 |
|---|
| Flat 2, Grand Mansions 1-3, Silverdale Road955 m away | 78 m² | 98 m² | +20 m² +26% | 2021 |
|---|
| 3, Western Road932 m away | 82 m² | 102 m² | +20 m² +24% | 2020 |
|---|
| 11, Hyde Road680 m away | 39 m² | 59 m² | +20 m² +51% | 2018 |
|---|
| 24, Belmore Road727 m away | 33 m² | 53 m² | +20 m² +61% | 2018 |
|---|
| Flat 29, Grand Mansions 1-3, Silverdale Road955 m away | 63 m² | 83 m² | +20 m² +32% | 2016 |
|---|
| 171, Terminus Road122 m away | 31 m² | 51 m² | +20 m² +65% | 2015 |
|---|
| Flat 38, Westdown House, Hartington Place110 m away | 100 m² | 120 m² | +20 m² +20% | 2014 |
|---|
| 1, Cambridge Road913 m away | 15 m² | 35 m² | +20 m² +133% | 2013 |
|---|
| 18, Upperton Gardens890 m away | 26 m² | 46 m² | +20 m² +77% | 2009 |
|---|
| Flat 3, Saffrons Mead, 2, Grassington Road951 m away | 60 m² | 79 m² | +19 m² +32% | 2026 |
|---|
| Flat 1, 15, Ceylon Place329 m away | 53 m² | 72 m² | +19 m² +36% | 2025 |
|---|
| Flat 1, 56, Grove Road742 m away | 45 m² | 64 m² | +19 m² +42% | 2024 |
|---|
| 10, Bolton Road250 m away | 36 m² | 55 m² | +19 m² +53% | 2023 |
|---|
| Flat 2, Stafford House, Southfields Road761 m away | 82 m² | 101 m² | +19 m² +23% | 2023 |
|---|
| 25, Gildredge Road584 m away | 51 m² | 70 m² | +19 m² +37% | 2021 |
|---|
| 4, Willowfield Square658 m away | 105 m² | 124 m² | +19 m² +18% | 2021 |
|---|
| Flat 11, Southdown Heights, 38, St Leonards Road682 m away | 35 m² | 54 m² | +19 m² +54% | 2019 |
|---|
| 17, Manifold Road815 m away | 87 m² | 106 m² | +19 m² +22% | 2019 |
|---|
| 131a, Seaside913 m away | 24 m² | 43 m² | +19 m² +79% | 2019 |
|---|
| 21, Arlington Road928 m away | 103 m² | 122 m² | +19 m² +18% | 2016 |
|---|
| Ground Floor, 122 - 134, Seaside696 m away | 51 m² | 70 m² | +19 m² +37% | 2013 |
|---|
| 27, Longstone Road402 m away | 93 m² | 112 m² | +19 m² +20% | 2012 |
|---|
| 13, The Avenue786 m away | 61 m² | 80 m² | +19 m² +31% | 2012 |
|---|
| Flat 2, 11, Upper Avenue817 m away | 35 m² | 54 m² | +19 m² +54% | 2010 |
|---|
| Flat 4, Birley House, 13, College Road640 m away | 62 m² | 80 m² | +18 m² +29% | 2023 |
|---|
| 183, Langney Road587 m away | 40 m² | 58 m² | +18 m² +45% | 2022 |
|---|
| Flat 5, 10, Saffrons Road947 m away | 86 m² | 104 m² | +18 m² +21% | 2022 |
|---|
| Flat 3, 14, College Road603 m away | 44 m² | 62 m² | +18 m² +41% | 2021 |
|---|
| Flat 1, 11, Upper Avenue817 m away | 91 m² | 109 m² | +18 m² +20% | 2021 |
|---|
| 52, Longstone Road437 m away | 109 m² | 127 m² | +18 m² +17% | 2019 |
|---|
| 12, Jevington Gardens875 m away | 83 m² | 101 m² | +18 m² +22% | 2019 |
|---|
| Flat 10, Victoria Court, 24 - 26, Burlington Place352 m away | 48 m² | 66 m² | +18 m² +38% | 2018 |
|---|
| Flat 16, Carew Court, 1, Carew Road873 m away | 83 m² | 101 m² | +18 m² +22% | 2018 |
|---|
| 25, Beltring Road981 m away | 83 m² | 101 m² | +18 m² +22% | 2018 |
|---|
| 41, Pevensey Road219 m away | 37 m² | 55 m² | +18 m² +49% | 2016 |
|---|
| 18, Susans Road133 m away | 39 m² | 57 m² | +18 m² +46% | 2010 |
|---|
| 34, Grove Road690 m away | 44 m² | 61 m² | +17 m² +39% | 2026 |
|---|
| Flat 56, Park Gates, Chiswick Place378 m away | 82 m² | 99 m² | +17 m² +21% | 2024 |
|---|
| Flat 2, Berkeley Court, 1 - 9, Wilmington Square631 m away | 66 m² | 83 m² | +17 m² +26% | 2022 |
|---|
| 1, Elms Road67 m away | 42 m² | 59 m² | +17 m² +40% | 2020 |
|---|
| Flat 3, 13, Arlington Road928 m away | 104 m² | 121 m² | +17 m² +16% | 2020 |
|---|
| Flat 2, 5a, Ivy Terrace648 m away | 60 m² | 77 m² | +17 m² +28% | 2019 |
|---|
| Flat 3, 13, Bedfordwell Road962 m away | 36 m² | 53 m² | +17 m² +47% | 2018 |
|---|
| Flat 1, 9a, Spencer Road553 m away | 71 m² | 88 m² | +17 m² +24% | 2017 |
|---|
| 6, Trinity Trees233 m away | 56 m² | 73 m² | +17 m² +30% | 2015 |
|---|
| 30, Lushington Road449 m away | 27 m² | 44 m² | +17 m² +63% | 2010 |
|---|
| 3, College Road640 m away | 94 m² | 111 m² | +17 m² +18% | 2010 |
|---|
| 18 - 20, Trinity Trees131 m away | 67 m² | 84 m² | +17 m² +25% | 2009 |
|---|
| 1, Chelsea Mews514 m away | 73 m² | 89 m² | +16 m² +22% | 2023 |
|---|
| 1, St Georges Road805 m away | 66 m² | 82 m² | +16 m² +24% | 2022 |
|---|
| Flat 3, Avenue Mansions, Elms Avenue129 m away | 68 m² | 84 m² | +16 m² +24% | 2021 |
|---|
| Flat 4, 26, Bedfordwell Road988 m away | 79 m² | 95 m² | +16 m² +20% | 2020 |
|---|
| Flat 2, 12, Grange Gardens876 m away | 80 m² | 96 m² | +16 m² +20% | 2019 |
|---|
| Flat 1, Cambridge Court, Cambridge Road881 m away | 88 m² | 104 m² | +16 m² +18% | 2018 |
|---|
| 89, Ashford Road447 m away | 96 m² | 112 m² | +16 m² +17% | 2013 |
|---|
| 74, Langney Road389 m away | 42 m² | 58 m² | +16 m² +38% | 2009 |
|---|
| 23, Lushington Road448 m away | 42 m² | 58 m² | +16 m² +38% | 2009 |
|---|
| 66, Langney Road389 m away | 26 m² | 41 m² | +15 m² +58% | 2026 |
|---|
| 4, Bath Road697 m away | 73 m² | 88 m² | +15 m² +21% | 2026 |
|---|
| Flat 1, Regency Court, 4 - 5, South Cliff976 m away | 85 m² | 100 m² | +15 m² +18% | 2026 |
|---|
| 10, Marine Road638 m away | 84 m² | 99 m² | +15 m² +18% | 2024 |
|---|
| Flat 5, Spencer House, 8, Spencer Road516 m away | 38 m² | 53 m² | +15 m² +39% | 2023 |
|---|
| Flat 4a, Spencer Court, Spencer Road551 m away | 72 m² | 87 m² | +15 m² +21% | 2023 |
|---|
| Flat 7, Saffrons Mead, 2, Grassington Road951 m away | 66 m² | 81 m² | +15 m² +23% | 2022 |
|---|
| Flat 2, Sussex House, Hartington Place162 m away | 71 m² | 86 m² | +15 m² +21% | 2020 |
|---|
| 26b, York Road664 m away | 40 m² | 55 m² | +15 m² +38% | 2019 |
|---|
| 11a, Arlington Road928 m away | 92 m² | 107 m² | +15 m² +16% | 2016 |
|---|
| Flat 1, 18, Lushington Road449 m away | 79 m² | 94 m² | +15 m² +19% | 2013 |
|---|
| 79, Willowfield Road810 m away | 81 m² | 96 m² | +15 m² +19% | 2013 |
|---|
| Flat 6, Pegasus Court, 29, St Leonards Road746 m away | 47 m² | 62 m² | +15 m² +32% | 2011 |
|---|
| Flat 1, 15, The Avenue786 m away | 63 m² | 78 m² | +15 m² +24% | 2011 |
|---|
| Flat 8, 45, Blackwater Road999 m away | 46 m² | 61 m² | +15 m² +33% | 2011 |
|---|