Finding extended homes…
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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 N12 0AY
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 |
|---|---|---|---|---|
| 612, High Road377 m away | 145 m² | 302 m² | +157 m² +108% | 2025 |
| 104, Nether Street975 m away | 201 m² | 336 m² | +135 m² +67% | 2019 |
| 36, Kenver Avenue263 m away | 104 m² | 239 m² | +135 m² +130% | 2012 |
| 87, Wentworth Avenue914 m away | 90 m² | 210 m² | +120 m² +133% | 2020 |
| 608, High Road377 m away | 265 m² | 370 m² | +105 m² +40% | 2023 |
| 89, Wentworth Avenue914 m away | 111 m² | 210 m² | +99 m² +89% | 2020 |
| 38, Essex Park803 m away | 111 m² | 204 m² | +93 m² +84% | 2014 |
| 72, Ingleway727 m away | 97 m² | 185 m² | +88 m² +91% | 2026 |
| 4, Eton Avenue205 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.
| 200 m² |
| +88 m² +79% |
| 2019 |
| 4, Park Avenue702 m away | 75 m² | 161 m² | +86 m² +115% | 2025 |
|---|
| 35, Alexandra Grove873 m away | 176 m² | 262 m² | +86 m² +49% | 2015 |
|---|
| 65, Crescent Way636 m away | 82 m² | 165 m² | +83 m² +101% | 2021 |
|---|
| 8, Rosemont Avenue592 m away | 128 m² | 209 m² | +81 m² +63% | 2024 |
|---|
| 132, Etchingham Park Road675 m away | 122 m² | 202 m² | +80 m² +66% | 2024 |
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| 26, Claverley Grove944 m away | 109 m² | 186 m² | +77 m² +71% | 2020 |
|---|
| 68, Queens Avenue425 m away | 116 m² | 192 m² | +76 m² +66% | 2024 |
|---|
| 43, Etchingham Park Road509 m away | 205 m² | 281 m² | +76 m² +37% | 2022 |
|---|
| 45, Bramber Road980 m away | 104 m² | 178 m² | +74 m² +71% | 2021 |
|---|
| 51, Bow Lane264 m away | 131 m² | 202 m² | +71 m² +54% | 2020 |
|---|
| 5, Mossborough Close769 m away | 96 m² | 166 m² | +70 m² +73% | 2022 |
|---|
| 45, Holdenhurst Avenue266 m away | 104 m² | 173 m² | +69 m² +66% | 2022 |
|---|
| 46, Moss Hall Grove812 m away | 124 m² | 192 m² | +68 m² +55% | 2021 |
|---|
| 58, Woodlands Avenue504 m away | 93 m² | 161 m² | +68 m² +73% | 2020 |
|---|
| 9, Park Avenue702 m away | 98 m² | 166 m² | +68 m² +69% | 2020 |
|---|
| 46, Hilton Avenue842 m away | 50 m² | 117 m² | +67 m² +134% | 2025 |
|---|
| 2, Nursery Avenue983 m away | 55 m² | 120 m² | +65 m² +118% | 2012 |
|---|
| 38, Hilton Avenue842 m away | 91 m² | 155 m² | +64 m² +70% | 2017 |
|---|
| 19, Lankaster Gardens805 m away | 94 m² | 157 m² | +63 m² +67% | 2024 |
|---|
| 5, Willow Way779 m away | 112 m² | 173 m² | +61 m² +54% | 2014 |
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| 35, Oakfield Road943 m away | 106 m² | 166 m² | +60 m² +57% | 2022 |
|---|
| 26, Glebe Road578 m away | 52 m² | 111 m² | +59 m² +113% | 2019 |
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| 64, Grove Road759 m away | 98 m² | 156 m² | +58 m² +59% | 2020 |
|---|
| 11, Castle Road852 m away | 81 m² | 139 m² | +58 m² +72% | 2020 |
|---|
| 3, St Pauls Way828 m away | 109 m² | 165 m² | +56 m² +51% | 2023 |
|---|
| 9, Queens Road694 m away | 67 m² | 123 m² | +56 m² +84% | 2018 |
|---|
| 12, Upway626 m away | 78 m² | 133 m² | +55 m² +71% | 2024 |
|---|
| 41, Eton Avenue183 m away | 131 m² | 184 m² | +53 m² +40% | 2019 |
|---|
| 41, Grove Road719 m away | 104 m² | 156 m² | +52 m² +50% | 2023 |
|---|
| 3, Bow Lane413 m away | 101 m² | 153 m² | +52 m² +51% | 2018 |
|---|
| 21, Lankaster Gardens805 m away | 95 m² | 146 m² | +51 m² +54% | 2024 |
|---|
| 179, Summers Lane963 m away | 82 m² | 132 m² | +50 m² +61% | 2026 |
|---|
| 95, Woodlands Avenue534 m away | 96 m² | 146 m² | +50 m² +52% | 2023 |
|---|
| 90, Woodlands Avenue504 m away | 98 m² | 148 m² | +50 m² +51% | 2022 |
|---|
| 682, High Road694 m away | 70 m² | 120 m² | +50 m² +71% | 2020 |
|---|
| 47, Fallow Court Avenue243 m away | 122 m² | 171 m² | +49 m² +40% | 2023 |
|---|
| 7, Queens Avenue467 m away | 113 m² | 162 m² | +49 m² +43% | 2016 |
|---|
| 75, Etchingham Park Road558 m away | 60 m² | 109 m² | +49 m² +82% | 2013 |
|---|
| 88, Queens Avenue425 m away | 113 m² | 161 m² | +48 m² +42% | 2026 |
|---|
| 54, Grove Road759 m away | 107 m² | 155 m² | +48 m² +45% | 2023 |
|---|
| 22, Rosemont Avenue592 m away | 109 m² | 157 m² | +48 m² +44% | 2018 |
|---|
| 61, Wentworth Park876 m away | 123 m² | 168 m² | +45 m² +37% | 2023 |
|---|
| 18, Hilton Avenue842 m away | 126 m² | 171 m² | +45 m² +36% | 2022 |
|---|
| 45, Alexandra Grove873 m away | 121 m² | 166 m² | +45 m² +37% | 2020 |
|---|
| 76, Old Farm Road633 m away | 36 m² | 81 m² | +45 m² +125% | 2014 |
|---|
| 118, Summers Lane591 m away | 84 m² | 128 m² | +44 m² +52% | 2025 |
|---|
| 42, Addington Drive384 m away | 109 m² | 153 m² | +44 m² +40% | 2024 |
|---|
| 90, Woodgrange Avenue472 m away | 142 m² | 186 m² | +44 m² +31% | 2024 |
|---|
| Flat 18, 706, High Road770 m away | 53 m² | 97 m² | +44 m² +83% | 2021 |
|---|
| 14, Chislehurst Avenue333 m away | 125 m² | 169 m² | +44 m² +35% | 2020 |
|---|
| 47, Wentworth Park876 m away | 118 m² | 161 m² | +43 m² +36% | 2025 |
|---|
| 57, Bramber Road980 m away | 123 m² | 166 m² | +43 m² +35% | 2022 |
|---|
| 114, Granville Road86 m away | 63 m² | 106 m² | +43 m² +68% | 2017 |
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| 47, Wentworth Avenue914 m away | 107 m² | 149 m² | +42 m² +39% | 2025 |
|---|
| 3, Percy Road993 m away | 51 m² | 93 m² | +42 m² +82% | 2024 |
|---|
| 38, Claverley Grove944 m away | 123 m² | 165 m² | +42 m² +34% | 2021 |
|---|
| 1, Percy Road993 m away | 50 m² | 92 m² | +42 m² +84% | 2019 |
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| 23, Queens Avenue467 m away | 96 m² | 137 m² | +41 m² +43% | 2022 |
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| 22, Eton Avenue205 m away | 130 m² | 171 m² | +41 m² +32% | 2020 |
|---|
| 39, Nether Street825 m away | 119 m² | 160 m² | +41 m² +34% | 2020 |
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| 29, Essex Park804 m away | 109 m² | 149 m² | +40 m² +37% | 2017 |
|---|
| 57, Long Lane807 m away | 34 m² | 74 m² | +40 m² +118% | 2015 |
|---|
| 47, Clifton Road434 m away | 101 m² | 140 m² | +39 m² +39% | 2025 |
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| 7, Stanhope Road907 m away | 88 m² | 127 m² | +39 m² +44% | 2025 |
|---|
| 3, Garthway704 m away | 87 m² | 126 m² | +39 m² +45% | 2023 |
|---|
| 62, Churchfield Avenue545 m away | 140 m² | 179 m² | +39 m² +28% | 2017 |
|---|
| 39, Hillcourt Avenue857 m away | 191 m² | 230 m² | +39 m² +20% | 2011 |
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| 24, Lankaster Gardens767 m away | 89 m² | 127 m² | +38 m² +43% | 2024 |
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| 14, Sandringham Gardens453 m away | 158 m² | 196 m² | +38 m² +24% | 2022 |
|---|
| 9a, Chislehurst Avenue333 m away | 80 m² | 118 m² | +38 m² +48% | 2020 |
|---|
| 96, Summers Lane591 m away | 73 m² | 111 m² | +38 m² +52% | 2013 |
|---|
| 9, Hillcourt Avenue857 m away | 73 m² | 111 m² | +38 m² +52% | 2012 |
|---|
| 31, Bramber Road980 m away | 101 m² | 139 m² | +38 m² +38% | 2012 |
|---|
| 16, Hillcourt Avenue830 m away | 101 m² | 138 m² | +37 m² +37% | 2023 |
|---|
| 1, Holdenhurst Avenue266 m away | 111 m² | 148 m² | +37 m² +33% | 2018 |
|---|
| 57, Bow Lane264 m away | 121 m² | 158 m² | +37 m² +31% | 2016 |
|---|
| 13, Dickens Avenue633 m away | 34 m² | 70 m² | +36 m² +106% | 2026 |
|---|
| 54, Stanhope Road949 m away | 86 m² | 122 m² | +36 m² +42% | 2025 |
|---|
| 8, Derby Avenue884 m away | 98 m² | 134 m² | +36 m² +37% | 2022 |
|---|
| 12, St Pauls Way828 m away | 108 m² | 144 m² | +36 m² +33% | 2020 |
|---|
| 11, Woodlands Avenue534 m away | 61 m² | 97 m² | +36 m² +59% | 2018 |
|---|
| 142, Long Lane840 m away | 41 m² | 77 m² | +36 m² +88% | 2011 |
|---|
| 35, Hillcourt Avenue857 m away | 149 m² | 184 m² | +35 m² +23% | 2026 |
|---|
| 8, Holdenhurst Avenue299 m away | 94 m² | 129 m² | +35 m² +37% | 2025 |
|---|
| 46, Queens Avenue425 m away | 54 m² | 89 m² | +35 m² +65% | 2025 |
|---|
| 16a, Gruneisen Road799 m away | 57 m² | 92 m² | +35 m² +61% | 2023 |
|---|
| 85, Etchingham Park Road558 m away | 137 m² | 172 m² | +35 m² +26% | 2021 |
|---|
| 28, Lankaster Gardens767 m away | 91 m² | 126 m² | +35 m² +38% | 2020 |
|---|
| 27, Hillcourt Avenue857 m away | 114 m² | 149 m² | +35 m² +31% | 2020 |
|---|
| 83, Glebelands Close420 m away | 48 m² | 83 m² | +35 m² +73% | 2019 |
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| 87, Sandringham Gardens411 m away | 111 m² | 145 m² | +34 m² +31% | 2026 |
|---|
| 21a, Grove Road719 m away | 54 m² | 88 m² | +34 m² +63% | 2020 |
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| Flat 33, Etchingham Court, Etchingham Park Road400 m away | 41 m² | 75 m² | +34 m² +83% | 2018 |
|---|
| Flat 24, Kings Lodge, Kingsway644 m away | 44 m² | 77 m² | +33 m² +75% | 2026 |
|---|
| 42, Woodhouse Road601 m away | 92 m² | 125 m² | +33 m² +36% | 2023 |
|---|
| 24, Vines Avenue916 m away | 103 m² | 136 m² | +33 m² +32% | 2023 |
|---|
| 26, Queens Avenue425 m away | 111 m² | 144 m² | +33 m² +30% | 2019 |
|---|
| 39, Stanhope Road907 m away | 52 m² | 85 m² | +33 m² +63% | 2019 |
|---|
| 63, Woodlands Avenue534 m away | 112 m² | 145 m² | +33 m² +29% | 2018 |
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| 55, Sandringham Gardens510 m away | 48 m² | 81 m² | +33 m² +69% | 2013 |
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| 6, Nursery Avenue983 m away | 54 m² | 86 m² | +32 m² +59% | 2018 |
|---|
| 85, Woodgrange Avenue502 m away | 126 m² | 157 m² | +31 m² +25% | 2025 |
|---|
| 84, Queens Avenue425 m away | 111 m² | 142 m² | +31 m² +28% | 2023 |
|---|
| 18a, Brownlow Road775 m away | 55 m² | 86 m² | +31 m² +56% | 2023 |
|---|
| 67, Grove Road944 m away | 95 m² | 126 m² | +31 m² +33% | 2020 |
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| 40, Lankaster Gardens767 m away | 86 m² | 116 m² | +30 m² +35% | 2026 |
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| 46, Sylvester Road934 m away | 95 m² | 125 m² | +30 m² +32% | 2024 |
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| 30, Fallow Court Avenue275 m away | 134 m² | 163 m² | +29 m² +22% | 2025 |
|---|
| 36a, Queens Avenue425 m away | 52 m² | 81 m² | +29 m² +56% | 2020 |
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| 381, High Road717 m away | 102 m² | 131 m² | +29 m² +28% | 2020 |
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| 36, Claverley Grove944 m away | 118 m² | 147 m² | +29 m² +25% | 2019 |
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| 92, Long Lane840 m away | 34 m² | 63 m² | +29 m² +85% | 2017 |
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| 36, Eton Avenue205 m away | 157 m² | 185 m² | +28 m² +18% | 2024 |
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| 25, Oakfield Road943 m away | 129 m² | 157 m² | +28 m² +22% | 2024 |
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| 6, Crescent Way837 m away | 86 m² | 114 m² | +28 m² +33% | 2022 |
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| 51, Sandringham Gardens510 m away | 104 m² | 131 m² | +27 m² +26% | 2020 |
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| 22, Hamilton Square444 m away | 65 m² | 92 m² | +27 m² +42% | 2018 |
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| 108, Grove Road936 m away | 82 m² | 109 m² | +27 m² +33% | 2018 |
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| Flat 7, 322, High Road905 m away | 48 m² | 75 m² | +27 m² +56% | 2017 |
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| 22a, Woodlands Avenue504 m away | 51 m² | 78 m² | +27 m² +53% | 2016 |
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| 3, Thyra Grove667 m away | 97 m² | 124 m² | +27 m² +28% | 2012 |
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| Flat 1, 728, High Road830 m away | 23 m² | 50 m² | +27 m² +117% | 2012 |
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| 31, Sandringham Gardens510 m away | 139 m² | 165 m² | +26 m² +19% | 2023 |
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| 40, Moss Hall Grove812 m away | 139 m² | 165 m² | +26 m² +19% | 2023 |
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| 150, Summers Lane746 m away | 62 m² | 88 m² | +26 m² +42% | 2022 |
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| 52, Queens Avenue425 m away | 122 m² | 148 m² | +26 m² +21% | 2015 |
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| 42, Old Farm Road633 m away | 95 m² | 121 m² | +26 m² +27% | 2015 |
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| 37, Bow Lane413 m away | 130 m² | 155 m² | +25 m² +19% | 2023 |
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| Flat 1, 53, Long Lane807 m away | 61 m² | 86 m² | +25 m² +41% | 2023 |
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| 30, Nether Street816 m away | 24 m² | 49 m² | +25 m² +104% | 2022 |
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| 13, Stanhope Road907 m away | 35 m² | 60 m² | +25 m² +71% | 2022 |
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| 16, Crossway585 m away | 29 m² | 54 m² | +25 m² +86% | 2021 |
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| Flat B, 76, Granville Road282 m away | 38 m² | 63 m² | +25 m² +66% | 2020 |
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| 80, Woodhouse Road613 m away | 73 m² | 98 m² | +25 m² +34% | 2020 |
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| Flat 2, 3, Alexandra Grove650 m away | 34 m² | 59 m² | +25 m² +74% | 2020 |
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| 17, Derby Avenue884 m away | 93 m² | 118 m² | +25 m² +27% | 2018 |
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| 12, Grove Road759 m away | 125 m² | 150 m² | +25 m² +20% | 2017 |
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| 101, Nether Street933 m away | 58 m² | 83 m² | +25 m² +43% | 2010 |
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| 20, Woodberry Grove364 m away | 128 m² | 152 m² | +24 m² +19% | 2025 |
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| 64, Woodgrange Avenue472 m away | 94 m² | 118 m² | +24 m² +26% | 2025 |
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| 8, Clifton Road439 m away | 119 m² | 143 m² | +24 m² +20% | 2024 |
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| 108, Woodhouse Road613 m away | 72 m² | 96 m² | +24 m² +33% | 2024 |
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| 40, Grove Road759 m away | 125 m² | 149 m² | +24 m² +19% | 2024 |
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| 10, Woodberry Way366 m away | 53 m² | 77 m² | +24 m² +45% | 2023 |
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| Flat 22, Witcomb Lodge, 64, Lankaster Gardens767 m away | 67 m² | 91 m² | +24 m² +36% | 2023 |
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| 112, Long Lane840 m away | 82 m² | 106 m² | +24 m² +29% | 2023 |
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| 49a, Stanhope Road907 m away | 42 m² | 66 m² | +24 m² +57% | 2022 |
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| 1, The Woodlands, High Road332 m away | 73 m² | 97 m² | +24 m² +33% | 2021 |
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| Flat 1507, 100, Kingsway700 m away | 87 m² | 111 m² | +24 m² +28% | 2021 |
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| 32, Old Farm Road607 m away | 97 m² | 121 m² | +24 m² +25% | 2015 |
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| 78, Long Lane831 m away | 73 m² | 97 m² | +24 m² +33% | 2014 |
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| 52, Lankaster Gardens767 m away | 100 m² | 124 m² | +24 m² +24% | 2013 |
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| Flat 3, The Fountains, Ballards Lane665 m away | 71 m² | 95 m² | +24 m² +34% | 2010 |
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| 31, Woodhouse Road669 m away | 38 m² | 62 m² | +24 m² +63% | 2010 |
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| Flat 3, 656a, High Road587 m away | 44 m² | 67 m² | +23 m² +52% | 2026 |
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| 34, Avondale Road824 m away | 121 m² | 144 m² | +23 m² +19% | 2025 |
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| 23a, Woodhouse Road669 m away | 94 m² | 117 m² | +23 m² +24% | 2024 |
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| 8, Ingleway885 m away | 55 m² | 78 m² | +23 m² +42% | 2024 |
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| 8a, Chislehurst Avenue333 m away | 53 m² | 76 m² | +23 m² +43% | 2023 |
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| 38, Lankaster Gardens767 m away | 88 m² | 111 m² | +23 m² +26% | 2022 |
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| 10, Gruneisen Road799 m away | 58 m² | 81 m² | +23 m² +40% | 2021 |
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| 71, Hutton Grove836 m away | 113 m² | 136 m² | +23 m² +20% | 2021 |
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| Flat 913, 100, Kingsway700 m away | 86 m² | 109 m² | +23 m² +27% | 2020 |
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| 2, School Way663 m away | 51 m² | 74 m² | +23 m² +45% | 2016 |
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| 1, Woodberry Way395 m away | 115 m² | 138 m² | +23 m² +20% | 2014 |
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| Flat 13, Sherbrook House, 174, Ballards Lane653 m away | 87 m² | 110 m² | +23 m² +26% | 2013 |
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| 88, Bow Lane243 m away | 108 m² | 130 m² | +22 m² +20% | 2023 |
|---|
| 62, Stanhope Road949 m away | 45 m² | 67 m² | +22 m² +49% | 2022 |
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| 12, Lewis Gardens888 m away | 83 m² | 105 m² | +22 m² +27% | 2019 |
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| 57a, Nether Street933 m away | 52 m² | 74 m² | +22 m² +42% | 2015 |
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| 44a, Derby Avenue884 m away | 44 m² | 66 m² | +22 m² +50% | 2014 |
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| 40, Granville Road453 m away | 49 m² | 70 m² | +21 m² +43% | 2025 |
|---|
| 48, Holdenhurst Avenue299 m away | 132 m² | 153 m² | +21 m² +16% | 2024 |
|---|
| 98, Ingleway579 m away | 99 m² | 120 m² | +21 m² +21% | 2023 |
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| 2, Churchfield Avenue545 m away | 44 m² | 65 m² | +21 m² +48% | 2020 |
|---|
| Flat 1, Hartley House, Ballards Lane614 m away | 46 m² | 67 m² | +21 m² +46% | 2019 |
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| 28, Crescent Way701 m away | 77 m² | 98 m² | +21 m² +27% | 2019 |
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| 30, Crossway585 m away | 76 m² | 96 m² | +20 m² +26% | 2023 |
|---|
| 39, Claverley Grove964 m away | 128 m² | 148 m² | +20 m² +16% | 2023 |
|---|
| 22, Lankaster Gardens767 m away | 99 m² | 119 m² | +20 m² +20% | 2022 |
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| Flat 6a, Etchingham Court, Etchingham Park Road400 m away | 59 m² | 79 m² | +20 m² +34% | 2019 |
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| Melville House, 8 - 12, Woodhouse Road624 m away | 46 m² | 66 m² | +20 m² +43% | 2015 |
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| 65, Long Lane807 m away | 69 m² | 89 m² | +20 m² +29% | 2015 |
|---|
| 29, Woodgrange Avenue502 m away | 92 m² | 111 m² | +19 m² +21% | 2026 |
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| 18, Park View Road673 m away | 94 m² | 113 m² | +19 m² +20% | 2026 |
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| 211, Ballards Lane751 m away | 77 m² | 96 m² | +19 m² +25% | 2026 |
|---|
| 141b, Long Lane859 m away | 54 m² | 73 m² | +19 m² +35% | 2026 |
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| 59, Nether Street933 m away | 106 m² | 125 m² | +19 m² +18% | 2025 |
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| Flat 20, Sherbrook House, 174, Ballards Lane653 m away | 65 m² | 84 m² | +19 m² +29% | 2023 |
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| 66, Glebelands Close408 m away | 62 m² | 81 m² | +19 m² +31% | 2020 |
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| 52, Woodlands Avenue504 m away | 101 m² | 120 m² | +19 m² +19% | 2018 |
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