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 N11 3EB
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 |
|---|---|---|---|---|
| 23, Bellevue Road654 m away | 87 m² | 193 m² | +106 m² +122% | 2025 |
| 10, The Crescent895 m away | 118 m² | 216 m² | +98 m² +83% | 2022 |
| 7, Ferncroft Avenue672 m away | 130 m² | 221 m² | +91 m² +70% | 2022 |
| 32, Ferncroft Avenue672 m away | 93 m² | 172 m² | +79 m² +85% | 2024 |
| 9, Carlisle Place916 m away | 137 m² | 216 m² | +79 m² +58% | 2016 |
| 34, Friern Barnet Lane828 m away | 107 m² | 182 m² | +75 m² +70% | 2019 |
| 36, Thurlestone Avenue635 m away | 94 m² | 168 m² | +74 m² +79% | 2025 |
| 19, Goldsmith Road665 m away | 196 m² | 270 m² | +74 m² +38% | 2018 |
| 112, Sydney Road865 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.
| 75 m² |
| 147 m² |
| +72 m² +96% |
| 2016 |
| 4, St Johns Villas557 m away | 105 m² | 175 m² | +70 m² +67% | 2018 |
|---|
| 26, Friern Barnet Lane828 m away | 102 m² | 167 m² | +65 m² +64% | 2026 |
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| 94, George Crescent811 m away | 84 m² | 146 m² | +62 m² +74% | 2026 |
|---|
| 3, Goldsmith Road665 m away | 98 m² | 160 m² | +62 m² +63% | 2023 |
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| 273, Colney Hatch Lane469 m away | 95 m² | 157 m² | +62 m² +65% | 2017 |
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| 26, Albion Avenue946 m away | 78 m² | 138 m² | +60 m² +77% | 2016 |
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| 32, Goldsmith Road693 m away | 127 m² | 186 m² | +59 m² +46% | 2018 |
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| Flat 44, Princess Park Manor, Royal Drive553 m away | 168 m² | 226 m² | +58 m² +35% | 2016 |
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| 5, Holly Park Road825 m away | 111 m² | 168 m² | +57 m² +51% | 2023 |
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| 28, Friern Barnet Lane828 m away | 101 m² | 158 m² | +57 m² +56% | 2022 |
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| 113, Sydney Road865 m away | 102 m² | 159 m² | +57 m² +56% | 2020 |
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| 25, Ferncroft Avenue672 m away | 94 m² | 151 m² | +57 m² +61% | 2019 |
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| 44, Macdonald Road563 m away | 103 m² | 158 m² | +55 m² +53% | 2019 |
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| 4, Petworth Road977 m away | 121 m² | 174 m² | +53 m² +44% | 2026 |
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| 7, Woodleigh Avenue739 m away | 99 m² | 152 m² | +53 m² +54% | 2023 |
|---|
| 26, Crescent Road865 m away | 92 m² | 145 m² | +53 m² +58% | 2023 |
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| 17, Priory Villas, Colney Hatch Lane568 m away | 87 m² | 140 m² | +53 m² +61% | 2017 |
|---|
| 16, Pembroke Road464 m away | 102 m² | 153 m² | +51 m² +50% | 2021 |
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| Flat 327, Princess Park Manor East Wing, Royal Drive637 m away | 72 m² | 123 m² | +51 m² +71% | 2011 |
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| 179, Summers Lane911 m away | 82 m² | 132 m² | +50 m² +61% | 2026 |
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| 66, Petworth Road977 m away | 89 m² | 139 m² | +50 m² +56% | 2018 |
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| 8, Hopkins Close457 m away | 60 m² | 109 m² | +49 m² +82% | 2021 |
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| 8, Friern Barnet Lane828 m away | 124 m² | 172 m² | +48 m² +39% | 2023 |
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| 14, Ferncroft Avenue672 m away | 94 m² | 141 m² | +47 m² +50% | 2023 |
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| 147, Colney Hatch Lane883 m away | 58 m² | 105 m² | +47 m² +81% | 2021 |
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| 283, Colney Hatch Lane469 m away | 95 m² | 142 m² | +47 m² +49% | 2011 |
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| 7, Summers Row818 m away | 75 m² | 121 m² | +46 m² +61% | 2026 |
|---|
| 29, Newton Avenue899 m away | 82 m² | 128 m² | +46 m² +56% | 2021 |
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| 69, Ashurst Road926 m away | 112 m² | 157 m² | +45 m² +40% | 2021 |
|---|
| Flat 99, Princess Park Manor, Royal Drive577 m away | 146 m² | 191 m² | +45 m² +31% | 2013 |
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| 32, The Crescent828 m away | 99 m² | 143 m² | +44 m² +44% | 2023 |
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| 50, Hatley Close849 m away | 111 m² | 155 m² | +44 m² +40% | 2022 |
|---|
| Flat 99a, Princess Park Manor, Royal Drive577 m away | 84 m² | 128 m² | +44 m² +52% | 2011 |
|---|
| 32, Halton Close230 m away | 66 m² | 109 m² | +43 m² +65% | 2021 |
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| 35, Horsham Avenue868 m away | 104 m² | 147 m² | +43 m² +41% | 2018 |
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| 147, Gilson Place735 m away | 78 m² | 120 m² | +42 m² +54% | 2023 |
|---|
| 40, Macdonald Road563 m away | 105 m² | 147 m² | +42 m² +40% | 2015 |
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| 30, Coppetts Close837 m away | 108 m² | 150 m² | +42 m² +39% | 2012 |
|---|
| 5, Alma Road788 m away | 72 m² | 113 m² | +41 m² +57% | 2026 |
|---|
| 13, Cheddar Close335 m away | 75 m² | 116 m² | +41 m² +55% | 2014 |
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| 16, Carlton Road629 m away | 120 m² | 160 m² | +40 m² +33% | 2022 |
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| 81, Ashurst Road926 m away | 98 m² | 138 m² | +40 m² +41% | 2018 |
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| 26, Hollyfield Avenue553 m away | 92 m² | 132 m² | +40 m² +43% | 2015 |
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| 63, Beaconsfield Road758 m away | 78 m² | 118 m² | +40 m² +51% | 2012 |
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| 10, Cromwell Road457 m away | 82 m² | 121 m² | +39 m² +48% | 2026 |
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| 45, Holly Park Road694 m away | 90 m² | 129 m² | +39 m² +43% | 2017 |
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| 87, Poplar Grove141 m away | 66 m² | 104 m² | +38 m² +58% | 2025 |
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| 6, Bellevue Road695 m away | 146 m² | 184 m² | +38 m² +26% | 2012 |
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| 20, Goldsmith Road693 m away | 135 m² | 172 m² | +37 m² +27% | 2022 |
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| 40, Cromwell Road457 m away | 74 m² | 111 m² | +37 m² +50% | 2020 |
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| 303, Colney Hatch Lane469 m away | 104 m² | 141 m² | +37 m² +36% | 2014 |
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| 7, Alma Road788 m away | 75 m² | 111 m² | +36 m² +48% | 2026 |
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| Flat 377, Princess Park Manor East Wing, Royal Drive637 m away | 90 m² | 126 m² | +36 m² +40% | 2022 |
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| 91, Pembroke Road760 m away | 103 m² | 139 m² | +36 m² +35% | 2022 |
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| 36, Cromwell Road457 m away | 74 m² | 110 m² | +36 m² +49% | 2018 |
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| 107, Pembroke Road760 m away | 88 m² | 124 m² | +36 m² +41% | 2017 |
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| 4, Horsham Avenue850 m away | 92 m² | 128 m² | +36 m² +39% | 2015 |
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| 41, Goldsmith Road672 m away | 119 m² | 154 m² | +35 m² +29% | 2025 |
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| 37, Beaconsfield Road758 m away | 112 m² | 147 m² | +35 m² +31% | 2023 |
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| 123, Pembroke Road760 m away | 76 m² | 111 m² | +35 m² +46% | 2016 |
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| 12, Cromwell Road457 m away | 87 m² | 122 m² | +35 m² +40% | 2014 |
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| 17, Hampden Road538 m away | 83 m² | 117 m² | +34 m² +41% | 2022 |
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| 125, Pembroke Road760 m away | 79 m² | 113 m² | +34 m² +43% | 2016 |
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| 83, Horsham Avenue868 m away | 95 m² | 129 m² | +34 m² +36% | 2016 |
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| 26, Bethune Avenue985 m away | 153 m² | 187 m² | +34 m² +22% | 2016 |
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| 17, Newton Avenue899 m away | 85 m² | 118 m² | +33 m² +39% | 2023 |
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| 89, Glenthorne Road737 m away | 98 m² | 131 m² | +33 m² +34% | 2022 |
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| 162a, Sydney Road733 m away | 53 m² | 85 m² | +32 m² +60% | 2026 |
|---|
| Flat 204, Princess Park Manor, Royal Drive276 m away | 132 m² | 164 m² | +32 m² +24% | 2022 |
|---|
| 22, Silver Birch Close212 m away | 25 m² | 57 m² | +32 m² +128% | 2014 |
|---|
| Flat 365, Princess Park Manor East Wing, Royal Drive637 m away | 39 m² | 70 m² | +31 m² +79% | 2024 |
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| Flat 4, Woodland House, Woodland Road805 m away | 82 m² | 113 m² | +31 m² +38% | 2024 |
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| 84, Horsham Avenue850 m away | 91 m² | 122 m² | +31 m² +34% | 2024 |
|---|
| Flat 72, Princess Park Manor, Royal Drive553 m away | 59 m² | 90 m² | +31 m² +53% | 2020 |
|---|
| 18, Pembroke Road464 m away | 111 m² | 142 m² | +31 m² +28% | 2017 |
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| 42, Hatley Close849 m away | 109 m² | 140 m² | +31 m² +28% | 2016 |
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| 63, Glenthorne Road617 m away | 42 m² | 73 m² | +31 m² +74% | 2015 |
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| 46, Hollickwood Avenue568 m away | 96 m² | 127 m² | +31 m² +32% | 2013 |
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| 38, Whitmore Close766 m away | 84 m² | 115 m² | +31 m² +37% | 2013 |
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| 51, Ashurst Road926 m away | 115 m² | 145 m² | +30 m² +26% | 2024 |
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| 2, Albion Avenue914 m away | 87 m² | 117 m² | +30 m² +34% | 2023 |
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| 22, Lyndhurst Avenue545 m away | 92 m² | 122 m² | +30 m² +33% | 2021 |
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| 128, High Road868 m away | 48 m² | 78 m² | +30 m² +63% | 2009 |
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| 58, Hollickwood Avenue568 m away | 87 m² | 116 m² | +29 m² +33% | 2026 |
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| 109, Station Road736 m away | 81 m² | 110 m² | +29 m² +36% | 2020 |
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| 4, Pickering Gardens121 m away | 128 m² | 157 m² | +29 m² +23% | 2017 |
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| Flat 252, Hurstwood Court, Woodhouse Road749 m away | 50 m² | 79 m² | +29 m² +58% | 2012 |
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| 2, Parkhurst Road742 m away | 37 m² | 65 m² | +28 m² +76% | 2026 |
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| 38, Glenthorne Road717 m away | 86 m² | 114 m² | +28 m² +33% | 2024 |
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| 56, Holly Park Road841 m away | 118 m² | 146 m² | +28 m² +24% | 2023 |
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| 2, Pembroke Road464 m away | 43 m² | 71 m² | +28 m² +65% | 2015 |
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| 8, Swaledale Close240 m away | 74 m² | 101 m² | +27 m² +36% | 2025 |
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| 55, Pembroke Road615 m away | 119 m² | 146 m² | +27 m² +23% | 2025 |
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| Flat 6, Ripon Court, 119, Ribblesdale Avenue262 m away | 36 m² | 63 m² | +27 m² +75% | 2024 |
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| 127, Pembroke Road760 m away | 71 m² | 98 m² | +27 m² +38% | 2020 |
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| Flat 4, 145, Sydney Road688 m away | 43 m² | 70 m² | +27 m² +63% | 2016 |
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| 4, Pembroke Road464 m away | 57 m² | 84 m² | +27 m² +47% | 2015 |
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| Flat 376, Princess Park Manor East Wing, Royal Drive637 m away | 91 m² | 118 m² | +27 m² +30% | 2015 |
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| 38, Firs Avenue188 m away | 134 m² | 161 m² | +27 m² +20% | 2013 |
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| 16, Summers Row818 m away | 80 m² | 106 m² | +26 m² +33% | 2026 |
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| 3, Halton Close230 m away | 134 m² | 160 m² | +26 m² +19% | 2024 |
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| 147d, High Road841 m away | 122 m² | 148 m² | +26 m² +21% | 2024 |
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| Flat 9, Stanford Court, Friern Barnet Road498 m away | 43 m² | 69 m² | +26 m² +60% | 2021 |
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| 218, Alexandra Road859 m away | 172 m² | 198 m² | +26 m² +15% | 2016 |
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| 25, Carlton Road629 m away | 138 m² | 163 m² | +25 m² +18% | 2026 |
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| 8, Oakleigh Road South999 m away | 60 m² | 85 m² | +25 m² +42% | 2026 |
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| 31, Sycamore Hill193 m away | 38 m² | 63 m² | +25 m² +66% | 2023 |
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| 39, Beaconsfield Road758 m away | 124 m² | 149 m² | +25 m² +20% | 2021 |
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| Flat 24, Hampden Court, Hampden Road570 m away | 24 m² | 49 m² | +25 m² +104% | 2017 |
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| 172, Poplar Grove207 m away | 25 m² | 50 m² | +25 m² +100% | 2014 |
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| Flat 203, Princess Park Manor, Royal Drive276 m away | 129 m² | 153 m² | +24 m² +19% | 2026 |
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| 52, Cromwell Road457 m away | 102 m² | 126 m² | +24 m² +24% | 2025 |
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| 9, Summers Row818 m away | 86 m² | 110 m² | +24 m² +28% | 2024 |
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| 17, Horsham Avenue868 m away | 97 m² | 121 m² | +24 m² +25% | 2024 |
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| 3, Hemington Avenue785 m away | 160 m² | 184 m² | +24 m² +15% | 2022 |
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| Flat 362, Princess Park Manor East Wing, Royal Drive637 m away | 51 m² | 75 m² | +24 m² +47% | 2021 |
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| 41, Pembroke Road615 m away | 40 m² | 64 m² | +24 m² +60% | 2020 |
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| 212, Alexandra Road859 m away | 73 m² | 97 m² | +24 m² +33% | 2018 |
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| 34, Woodleigh Avenue751 m away | 111 m² | 135 m² | +24 m² +22% | 2017 |
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| 14, Pembroke Road464 m away | 57 m² | 81 m² | +24 m² +42% | 2016 |
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| 29, The Vale842 m away | 82 m² | 106 m² | +24 m² +29% | 2016 |
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| 6, Priory Villas, Colney Hatch Lane568 m away | 51 m² | 74 m² | +23 m² +45% | 2026 |
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| Flat 117, Princess Park Manor, Royal Drive577 m away | 76 m² | 99 m² | +23 m² +30% | 2025 |
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| 18, Macdonald Road563 m away | 96 m² | 119 m² | +23 m² +24% | 2022 |
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| Flat 6, Old Church Court, 7, Grove Road959 m away | 37 m² | 60 m² | +23 m² +62% | 2022 |
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| 58, Colebrook Way783 m away | 78 m² | 101 m² | +23 m² +29% | 2021 |
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| 198, Alexandra Road859 m away | 112 m² | 135 m² | +23 m² +21% | 2021 |
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| 119, Friern Barnet Road530 m away | 59 m² | 82 m² | +23 m² +39% | 2020 |
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| 1, The Crescent895 m away | 132 m² | 155 m² | +23 m² +17% | 2020 |
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| 86, Goldsmith Road704 m away | 83 m² | 106 m² | +23 m² +28% | 2019 |
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| 14, Alma Road788 m away | 94 m² | 116 m² | +22 m² +23% | 2026 |
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| 32, Ashurst Road897 m away | 116 m² | 138 m² | +22 m² +19% | 2025 |
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| 27, Coppetts Close837 m away | 68 m² | 90 m² | +22 m² +32% | 2022 |
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| Flat 7, Old Church Court, 7, Grove Road959 m away | 38 m² | 60 m² | +22 m² +58% | 2022 |
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| 122, Sydney Road865 m away | 47 m² | 69 m² | +22 m² +47% | 2019 |
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| 30, Crescent Road865 m away | 82 m² | 104 m² | +22 m² +27% | 2019 |
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| 9, The Limes Avenue956 m away | 100 m² | 122 m² | +22 m² +22% | 2017 |
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| 41, Coverdale Road172 m away | 129 m² | 150 m² | +21 m² +16% | 2026 |
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| 57a, Glenthorne Road617 m away | 50 m² | 71 m² | +21 m² +42% | 2025 |
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| 44, Whitmore Close766 m away | 87 m² | 108 m² | +21 m² +24% | 2025 |
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| Flat 19, Old Church Court, 7, Grove Road959 m away | 53 m² | 74 m² | +21 m² +40% | 2024 |
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| 250, Sydney Road543 m away | 71 m² | 92 m² | +21 m² +30% | 2023 |
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| 72a, Pembroke Road640 m away | 51 m² | 72 m² | +21 m² +41% | 2022 |
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| 6, Hatley Close849 m away | 117 m² | 138 m² | +21 m² +18% | 2016 |
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| 21, Alexandra Road575 m away | 57 m² | 78 m² | +21 m² +37% | 2011 |
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| 141, Sydney Road865 m away | 77 m² | 98 m² | +21 m² +27% | 2011 |
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| 2, Glenthorne Road589 m away | 41 m² | 62 m² | +21 m² +51% | 2009 |
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| 8, Dudrich Close417 m away | 106 m² | 126 m² | +20 m² +19% | 2024 |
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| 147, Pembroke Road760 m away | 73 m² | 93 m² | +20 m² +27% | 2024 |
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| Flat 348, Princess Park Manor East Wing, Royal Drive637 m away | 56 m² | 76 m² | +20 m² +36% | 2023 |
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| 152a, Sydney Road865 m away | 70 m² | 90 m² | +20 m² +29% | 2023 |
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| 216, Colney Hatch Lane767 m away | 99 m² | 119 m² | +20 m² +20% | 2021 |
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| Flat 177, Princess Park Manor, Royal Drive219 m away | 98 m² | 118 m² | +20 m² +20% | 2018 |
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| 24, George Crescent623 m away | 83 m² | 103 m² | +20 m² +24% | 2016 |
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| 9, Beaconsfield Road758 m away | 36 m² | 56 m² | +20 m² +56% | 2015 |
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| 12, Beaconsfield Road795 m away | 48 m² | 68 m² | +20 m² +42% | 2010 |
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| 22, The Vale842 m away | 47 m² | 66 m² | +19 m² +40% | 2023 |
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| 1, Buxted Road933 m away | 93 m² | 112 m² | +19 m² +20% | 2022 |
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| 16, Cromwell Road457 m away | 77 m² | 96 m² | +19 m² +25% | 2020 |
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| 140, High Road868 m away | 49 m² | 68 m² | +19 m² +39% | 2020 |
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| Flat 344, Princess Park Manor East Wing, Royal Drive637 m away | 63 m² | 82 m² | +19 m² +30% | 2016 |
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| 13, Kettlewell Close331 m away | 113 m² | 132 m² | +19 m² +17% | 2014 |
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| Flat 6, Princess Park Manor, Royal Drive452 m away | 95 m² | 114 m² | +19 m² +20% | 2012 |
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| 12, Glenthorne Road589 m away | 58 m² | 76 m² | +18 m² +31% | 2026 |
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| 2, Hampden Road584 m away | 77 m² | 95 m² | +18 m² +23% | 2022 |
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| 6, Thurlestone Avenue635 m away | 90 m² | 108 m² | +18 m² +20% | 2022 |
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| 110, Sydney Road865 m away | 76 m² | 94 m² | +18 m² +24% | 2015 |
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| 70, Firs Avenue126 m away | 67 m² | 84 m² | +17 m² +25% | 2022 |
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| 3, Catterick Close215 m away | 96 m² | 113 m² | +17 m² +18% | 2022 |
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| 15, Albion Avenue946 m away | 87 m² | 104 m² | +17 m² +20% | 2021 |
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| 4, Viscount Close449 m away | 103 m² | 120 m² | +17 m² +17% | 2020 |
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| 34, Macdonald Road563 m away | 60 m² | 77 m² | +17 m² +28% | 2019 |
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| 6, Pembroke Mews841 m away | 73 m² | 90 m² | +17 m² +23% | 2017 |
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| 8, Kettlewell Close331 m away | 78 m² | 94 m² | +16 m² +21% | 2024 |
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| 94, Gilson Place717 m away | 78 m² | 94 m² | +16 m² +21% | 2024 |
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| 35a, Alma Road788 m away | 62 m² | 78 m² | +16 m² +26% | 2021 |
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| Flat 94, Princess Park Manor, Royal Drive577 m away | 60 m² | 76 m² | +16 m² +27% | 2020 |
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| 127a, Friern Barnet Road530 m away | 59 m² | 75 m² | +16 m² +27% | 2019 |
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| 40, Whitmore Close766 m away | 92 m² | 108 m² | +16 m² +17% | 2013 |
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| 6, Woodland Road805 m away | 48 m² | 64 m² | +16 m² +33% | 2012 |
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| 42, Petworth Road977 m away | 92 m² | 107 m² | +15 m² +16% | 2025 |
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| 68, George Crescent623 m away | 89 m² | 104 m² | +15 m² +17% | 2020 |
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| 54, Larch Close273 m away | 40 m² | 55 m² | +15 m² +38% | 2019 |
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| 10, Strawberry Terrace823 m away | 75 m² | 90 m² | +15 m² +20% | 2018 |
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| Flat 11, Beaconsfield Court, Beaconsfield Road738 m away | 55 m² | 70 m² | +15 m² +27% | 2017 |
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| 26, Balmoral Avenue486 m away | 52 m² | 67 m² | +15 m² +29% | 2014 |
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| Flat 253, Princess Park Manor, Royal Drive370 m away | 98 m² | 113 m² | +15 m² +15% | 2010 |
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| Flat 14, Old Church Court, 7, Grove Road959 m away | 25 m² | 40 m² | +15 m² +60% | 2009 |
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