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 3LD
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 |
|---|---|---|---|---|
| 146, Friern Barnet Lane841 m away | 204 m² | 386 m² | +182 m² +89% | 2013 |
| 44, Raleigh Drive930 m away | 99 m² | 226 m² | +127 m² +128% | 2014 |
| 10, Friary Way729 m away | 117 m² | 239 m² | +122 m² +104% | 2014 |
| 23, Bellevue Road454 m away | 87 m² | 193 m² | +106 m² +122% | 2025 |
| 41, Fernwood Crescent828 m away | 89 m² | 194 m² | +105 m² +118% | 2025 |
| 53, Oakleigh Crescent948 m away | 96 m² | 201 m² | +105 m² +109% | 2021 |
| 10, The Crescent354 m away | 118 m² | 216 m² | +98 m² +83% | 2022 |
| 23, Friars Avenue520 m away | 135 m² | 228 m² | +93 m² +69% | 2017 |
| 7, Ferncroft Avenue810 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.
| 130 m² |
| 221 m² |
| +91 m² +70% |
| 2022 |
| 10, Church Crescent995 m away | 146 m² | 234 m² | +88 m² +60% | 2026 |
|---|
| 12, Fernwood Crescent792 m away | 86 m² | 173 m² | +87 m² +101% | 2023 |
|---|
| 46, Friary Road848 m away | 134 m² | 214 m² | +80 m² +60% | 2026 |
|---|
| 32, Ferncroft Avenue810 m away | 93 m² | 172 m² | +79 m² +85% | 2024 |
|---|
| 9, Carlisle Place847 m away | 137 m² | 216 m² | +79 m² +58% | 2016 |
|---|
| 10, Gresham Avenue296 m away | 132 m² | 209 m² | +77 m² +58% | 2020 |
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| 34, Friern Barnet Lane500 m away | 107 m² | 182 m² | +75 m² +70% | 2019 |
|---|
| 36, Thurlestone Avenue831 m away | 94 m² | 168 m² | +74 m² +79% | 2025 |
|---|
| 45, Bramber Road939 m away | 104 m² | 178 m² | +74 m² +71% | 2021 |
|---|
| 19, Goldsmith Road318 m away | 196 m² | 270 m² | +74 m² +38% | 2018 |
|---|
| 2h, Park Way196 m away | 103 m² | 176 m² | +73 m² +71% | 2023 |
|---|
| 104, Manor Drive446 m away | 129 m² | 202 m² | +73 m² +57% | 2021 |
|---|
| 18, Valley Avenue865 m away | 104 m² | 175 m² | +71 m² +68% | 2019 |
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| 4, St Johns Villas538 m away | 105 m² | 175 m² | +70 m² +67% | 2018 |
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| 11, Friary Way765 m away | 124 m² | 193 m² | +69 m² +56% | 2016 |
|---|
| 13, Brunswick Grove658 m away | 94 m² | 160 m² | +66 m² +70% | 2019 |
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| 26, Friern Barnet Lane500 m away | 102 m² | 167 m² | +65 m² +64% | 2026 |
|---|
| 37, Petworth Road758 m away | 45 m² | 110 m² | +65 m² +144% | 2022 |
|---|
| 78, Oakleigh Road South777 m away | 69 m² | 133 m² | +64 m² +93% | 2021 |
|---|
| 11, Gresham Avenue353 m away | 116 m² | 178 m² | +62 m² +53% | 2026 |
|---|
| 3, Goldsmith Road318 m away | 98 m² | 160 m² | +62 m² +63% | 2023 |
|---|
| 273, Colney Hatch Lane754 m away | 95 m² | 157 m² | +62 m² +65% | 2017 |
|---|
| 4, Church Close759 m away | 171 m² | 231 m² | +60 m² +35% | 2026 |
|---|
| 32, Goldsmith Road303 m away | 127 m² | 186 m² | +59 m² +46% | 2018 |
|---|
| 51, Friern Barnet Lane307 m away | 150 m² | 209 m² | +59 m² +39% | 2009 |
|---|
| 18, Lewes Road813 m away | 105 m² | 163 m² | +58 m² +55% | 2023 |
|---|
| Flat 44, Princess Park Manor, Royal Drive789 m away | 168 m² | 226 m² | +58 m² +35% | 2016 |
|---|
| 151a, Friern Barnet Lane793 m away | 283 m² | 341 m² | +58 m² +20% | 2012 |
|---|
| 5, Holly Park Road439 m away | 111 m² | 168 m² | +57 m² +51% | 2023 |
|---|
| 28, Friern Barnet Lane500 m away | 101 m² | 158 m² | +57 m² +56% | 2022 |
|---|
| 25, Ferncroft Avenue810 m away | 94 m² | 151 m² | +57 m² +61% | 2019 |
|---|
| 44, Macdonald Road424 m away | 103 m² | 158 m² | +55 m² +53% | 2019 |
|---|
| 74, Manor Drive576 m away | 104 m² | 159 m² | +55 m² +53% | 2015 |
|---|
| 4, Petworth Road727 m away | 121 m² | 174 m² | +53 m² +44% | 2026 |
|---|
| 152a, Friern Barnet Lane841 m away | 226 m² | 279 m² | +53 m² +23% | 2026 |
|---|
| 26, Crescent Road111 m away | 92 m² | 145 m² | +53 m² +58% | 2023 |
|---|
| 7, Woodleigh Avenue860 m away | 99 m² | 152 m² | +53 m² +54% | 2023 |
|---|
| 14, Park Way196 m away | 124 m² | 177 m² | +53 m² +43% | 2022 |
|---|
| 13, Manor Drive793 m away | 97 m² | 150 m² | +53 m² +55% | 2018 |
|---|
| 17, Priory Villas, Colney Hatch Lane672 m away | 87 m² | 140 m² | +53 m² +61% | 2017 |
|---|
| 15, Friars Avenue520 m away | 117 m² | 168 m² | +51 m² +44% | 2024 |
|---|
| 64, Manor Drive576 m away | 128 m² | 179 m² | +51 m² +40% | 2021 |
|---|
| Flat 327, Princess Park Manor East Wing, Royal Drive790 m away | 72 m² | 123 m² | +51 m² +71% | 2011 |
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| 66, Petworth Road727 m away | 89 m² | 139 m² | +50 m² +56% | 2018 |
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| 87, Brunswick Crescent776 m away | 65 m² | 114 m² | +49 m² +75% | 2026 |
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| 20, Park Way196 m away | 109 m² | 158 m² | +49 m² +45% | 2024 |
|---|
| 8, Friern Barnet Lane500 m away | 124 m² | 172 m² | +48 m² +39% | 2023 |
|---|
| 14, Ferncroft Avenue810 m away | 94 m² | 141 m² | +47 m² +50% | 2023 |
|---|
| 283, Colney Hatch Lane754 m away | 95 m² | 142 m² | +47 m² +49% | 2011 |
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| 129, Ashurst Road654 m away | 96 m² | 142 m² | +46 m² +48% | 2026 |
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| 7, Summers Row919 m away | 75 m² | 121 m² | +46 m² +61% | 2026 |
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| 28, Spencer Road775 m away | 83 m² | 129 m² | +46 m² +55% | 2019 |
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| 37, Lewes Road844 m away | 105 m² | 151 m² | +46 m² +44% | 2012 |
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| 69, Ashurst Road682 m away | 112 m² | 157 m² | +45 m² +40% | 2021 |
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| Flat 99, Princess Park Manor, Royal Drive823 m away | 146 m² | 191 m² | +45 m² +31% | 2013 |
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| 14, Friars Avenue610 m away | 157 m² | 201 m² | +44 m² +28% | 2026 |
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| 32, The Crescent228 m away | 99 m² | 143 m² | +44 m² +44% | 2023 |
|---|
| 50, Hatley Close270 m away | 111 m² | 155 m² | +44 m² +40% | 2022 |
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| Flat 99a, Princess Park Manor, Royal Drive823 m away | 84 m² | 128 m² | +44 m² +52% | 2011 |
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| 36, Falkland Avenue719 m away | 69 m² | 112 m² | +43 m² +62% | 2026 |
|---|
| 438, Oakleigh Road North561 m away | 91 m² | 134 m² | +43 m² +47% | 2025 |
|---|
| 57, Bramber Road939 m away | 123 m² | 166 m² | +43 m² +35% | 2022 |
|---|
| 32, Halton Close845 m away | 66 m² | 109 m² | +43 m² +65% | 2021 |
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| 35, Horsham Avenue598 m away | 104 m² | 147 m² | +43 m² +41% | 2018 |
|---|
| 25, Valley Avenue865 m away | 114 m² | 156 m² | +42 m² +37% | 2021 |
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| 40, Macdonald Road424 m away | 105 m² | 147 m² | +42 m² +40% | 2015 |
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| 13, Cheddar Close660 m away | 75 m² | 116 m² | +41 m² +55% | 2014 |
|---|
| 50, Brunswick Crescent776 m away | 68 m² | 108 m² | +40 m² +59% | 2024 |
|---|
| 16, Carlton Road432 m away | 120 m² | 160 m² | +40 m² +33% | 2022 |
|---|
| 81, Ashurst Road682 m away | 98 m² | 138 m² | +40 m² +41% | 2018 |
|---|
| 26, Hollyfield Avenue641 m away | 92 m² | 132 m² | +40 m² +43% | 2015 |
|---|
| 63, Beaconsfield Road565 m away | 78 m² | 118 m² | +40 m² +51% | 2012 |
|---|
| 45, Holly Park Road367 m away | 90 m² | 129 m² | +39 m² +43% | 2017 |
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| 18, Brunswick Avenue642 m away | 92 m² | 131 m² | +39 m² +42% | 2014 |
|---|
| 12, Friars Avenue610 m away | 142 m² | 180 m² | +38 m² +27% | 2025 |
|---|
| 125, Brunswick Park Road804 m away | 109 m² | 147 m² | +38 m² +35% | 2023 |
|---|
| 6, Bellevue Road446 m away | 146 m² | 184 m² | +38 m² +26% | 2012 |
|---|
| 31, Bramber Road939 m away | 101 m² | 139 m² | +38 m² +38% | 2012 |
|---|
| 88, Oakleigh Road South685 m away | 87 m² | 124 m² | +37 m² +43% | 2023 |
|---|
| 20, Goldsmith Road303 m away | 135 m² | 172 m² | +37 m² +27% | 2022 |
|---|
| 303, Colney Hatch Lane754 m away | 104 m² | 141 m² | +37 m² +36% | 2014 |
|---|
| 13, Beaconsfield Road565 m away | 57 m² | 94 m² | +37 m² +65% | 2013 |
|---|
| Flat 377, Princess Park Manor East Wing, Royal Drive790 m away | 90 m² | 126 m² | +36 m² +40% | 2022 |
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| 4, Horsham Avenue567 m away | 92 m² | 128 m² | +36 m² +39% | 2015 |
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| 169, Torrington Park406 m away | 102 m² | 138 m² | +36 m² +35% | 2012 |
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| 41, Goldsmith Road417 m away | 119 m² | 154 m² | +35 m² +29% | 2025 |
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| 37, Beaconsfield Road565 m away | 112 m² | 147 m² | +35 m² +31% | 2023 |
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| 73, Manor Drive552 m away | 112 m² | 146 m² | +34 m² +30% | 2024 |
|---|
| 12a, Oakleigh Close689 m away | 51 m² | 85 m² | +34 m² +67% | 2024 |
|---|
| 26, Bethune Avenue59 m away | 153 m² | 187 m² | +34 m² +22% | 2016 |
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| 83, Horsham Avenue598 m away | 95 m² | 129 m² | +34 m² +36% | 2016 |
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| 59, Friern Barnet Road699 m away | 50 m² | 84 m² | +34 m² +68% | 2009 |
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| 89, Glenthorne Road245 m away | 98 m² | 131 m² | +33 m² +34% | 2022 |
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| 35, Marne Avenue763 m away | 69 m² | 101 m² | +32 m² +46% | 2026 |
|---|
| 2g, Park Way196 m away | 108 m² | 140 m² | +32 m² +30% | 2025 |
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| 65, Brunswick Avenue670 m away | 128 m² | 160 m² | +32 m² +25% | 2025 |
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| Flat 204, Princess Park Manor, Royal Drive784 m away | 132 m² | 164 m² | +32 m² +24% | 2022 |
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| 29, Gresham Avenue353 m away | 133 m² | 165 m² | +32 m² +24% | 2021 |
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| 57a, Friern Barnet Road699 m away | 40 m² | 72 m² | +32 m² +80% | 2017 |
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| 8, Marne Avenue763 m away | 73 m² | 104 m² | +31 m² +42% | 2026 |
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| 84, Horsham Avenue567 m away | 91 m² | 122 m² | +31 m² +34% | 2024 |
|---|
| Flat 365, Princess Park Manor East Wing, Royal Drive790 m away | 39 m² | 70 m² | +31 m² +79% | 2024 |
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| Flat 4, Woodland House, Woodland Road939 m away | 82 m² | 113 m² | +31 m² +38% | 2024 |
|---|
| 5, Friars Avenue520 m away | 146 m² | 177 m² | +31 m² +21% | 2021 |
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| Flat 72, Princess Park Manor, Royal Drive789 m away | 59 m² | 90 m² | +31 m² +53% | 2020 |
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| 42, Hatley Close270 m away | 109 m² | 140 m² | +31 m² +28% | 2016 |
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| 63, Glenthorne Road374 m away | 42 m² | 73 m² | +31 m² +74% | 2015 |
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| 46, Hollickwood Avenue903 m away | 96 m² | 127 m² | +31 m² +32% | 2013 |
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| 51, Ashurst Road682 m away | 115 m² | 145 m² | +30 m² +26% | 2024 |
|---|
| 54, Brunswick Crescent776 m away | 66 m² | 96 m² | +30 m² +45% | 2021 |
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| 22, Lyndhurst Avenue797 m away | 92 m² | 122 m² | +30 m² +33% | 2021 |
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| 58, Hollickwood Avenue903 m away | 87 m² | 116 m² | +29 m² +33% | 2026 |
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| 275, Oakleigh Road North898 m away | 86 m² | 115 m² | +29 m² +34% | 2024 |
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| 109, Station Road855 m away | 81 m² | 110 m² | +29 m² +36% | 2020 |
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| 4, Pickering Gardens862 m away | 128 m² | 157 m² | +29 m² +23% | 2017 |
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| Flat 252, Hurstwood Court, Woodhouse Road789 m away | 50 m² | 79 m² | +29 m² +58% | 2012 |
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| 42, Friary Road848 m away | 124 m² | 152 m² | +28 m² +23% | 2026 |
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| 38, Glenthorne Road276 m away | 86 m² | 114 m² | +28 m² +33% | 2024 |
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| 56, Holly Park Road400 m away | 118 m² | 146 m² | +28 m² +24% | 2023 |
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| 36, Bawtry Road650 m away | 80 m² | 108 m² | +28 m² +35% | 2016 |
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| 8, Swaledale Close920 m away | 74 m² | 101 m² | +27 m² +36% | 2025 |
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| Flat 6, Ripon Court, 119, Ribblesdale Avenue842 m away | 36 m² | 63 m² | +27 m² +75% | 2024 |
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| Flat 376, Princess Park Manor East Wing, Royal Drive790 m away | 91 m² | 118 m² | +27 m² +30% | 2015 |
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| 22, Bawtry Road650 m away | 121 m² | 147 m² | +26 m² +21% | 2026 |
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| 16, Summers Row919 m away | 80 m² | 106 m² | +26 m² +33% | 2026 |
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| 3, Halton Close845 m away | 134 m² | 160 m² | +26 m² +19% | 2024 |
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| Flat 59, The Homestead, Waterfall Road990 m away | 49 m² | 75 m² | +26 m² +53% | 2022 |
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| Flat 9, Stanford Court, Friern Barnet Road486 m away | 43 m² | 69 m² | +26 m² +60% | 2021 |
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| 14, Gresham Avenue296 m away | 160 m² | 186 m² | +26 m² +16% | 2020 |
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| 18, Brunswick Crescent776 m away | 69 m² | 95 m² | +26 m² +38% | 2012 |
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| 8, Copwood Close921 m away | 26 m² | 52 m² | +26 m² +100% | 2011 |
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| 25, Carlton Road432 m away | 138 m² | 163 m² | +25 m² +18% | 2026 |
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| 8, Oakleigh Road South862 m away | 60 m² | 85 m² | +25 m² +42% | 2026 |
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| 1, Bawtry Road615 m away | 91 m² | 116 m² | +25 m² +27% | 2023 |
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| 39, Beaconsfield Road565 m away | 124 m² | 149 m² | +25 m² +20% | 2021 |
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| 372, Oakleigh Road North669 m away | 88 m² | 113 m² | +25 m² +28% | 2018 |
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| 139, Brunswick Park Road877 m away | 77 m² | 102 m² | +25 m² +32% | 2014 |
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| Flat 203, Princess Park Manor, Royal Drive784 m away | 129 m² | 153 m² | +24 m² +19% | 2026 |
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| 17, Horsham Avenue598 m away | 97 m² | 121 m² | +24 m² +25% | 2024 |
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| 9, Summers Row919 m away | 86 m² | 110 m² | +24 m² +28% | 2024 |
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| 3, Hemington Avenue333 m away | 160 m² | 184 m² | +24 m² +15% | 2022 |
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| 86, Manor Drive576 m away | 133 m² | 157 m² | +24 m² +18% | 2022 |
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| 43, Brunswick Grove768 m away | 74 m² | 98 m² | +24 m² +32% | 2022 |
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| 394, Oakleigh Road North628 m away | 22 m² | 46 m² | +24 m² +109% | 2021 |
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| Flat 362, Princess Park Manor East Wing, Royal Drive790 m away | 51 m² | 75 m² | +24 m² +47% | 2021 |
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| 66, Torrington Park865 m away | 56 m² | 80 m² | +24 m² +43% | 2021 |
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| 34, Woodleigh Avenue906 m away | 111 m² | 135 m² | +24 m² +22% | 2017 |
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| 81, Friern Barnet Lane384 m away | 148 m² | 172 m² | +24 m² +16% | 2012 |
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| 6, Priory Villas, Colney Hatch Lane672 m away | 51 m² | 74 m² | +23 m² +45% | 2026 |
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| Flat 117, Princess Park Manor, Royal Drive823 m away | 76 m² | 99 m² | +23 m² +30% | 2025 |
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| 18, Macdonald Road424 m away | 96 m² | 119 m² | +23 m² +24% | 2022 |
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| 1, The Crescent354 m away | 132 m² | 155 m² | +23 m² +17% | 2020 |
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| 119, Friern Barnet Road496 m away | 59 m² | 82 m² | +23 m² +39% | 2020 |
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| 86, Goldsmith Road392 m away | 83 m² | 106 m² | +23 m² +28% | 2019 |
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| 32, Ashurst Road655 m away | 116 m² | 138 m² | +22 m² +19% | 2025 |
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| 45, Petworth Road758 m away | 98 m² | 120 m² | +22 m² +22% | 2025 |
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| 26, Falkland Avenue719 m away | 73 m² | 95 m² | +22 m² +30% | 2023 |
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| 19, Marshalls Close948 m away | 28 m² | 50 m² | +22 m² +79% | 2023 |
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| 30, Crescent Road111 m away | 82 m² | 104 m² | +22 m² +27% | 2019 |
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| 14, Bramber Road909 m away | 102 m² | 124 m² | +22 m² +22% | 2019 |
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| 120, Raleigh Drive652 m away | 132 m² | 154 m² | +22 m² +17% | 2017 |
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| 41, Coverdale Road805 m away | 129 m² | 150 m² | +21 m² +16% | 2026 |
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| 57a, Glenthorne Road374 m away | 50 m² | 71 m² | +21 m² +42% | 2025 |
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| 41, Falkland Avenue719 m away | 83 m² | 104 m² | +21 m² +25% | 2023 |
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| 6, Hatley Close270 m away | 117 m² | 138 m² | +21 m² +18% | 2016 |
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| 151, Brunswick Park Road877 m away | 62 m² | 83 m² | +21 m² +34% | 2015 |
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| 2, Glenthorne Road418 m away | 41 m² | 62 m² | +21 m² +51% | 2009 |
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| 8, Dudrich Close824 m away | 106 m² | 126 m² | +20 m² +19% | 2024 |
|---|
| Flat 348, Princess Park Manor East Wing, Royal Drive790 m away | 56 m² | 76 m² | +20 m² +36% | 2023 |
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| 16, Friary Close493 m away | 107 m² | 127 m² | +20 m² +19% | 2018 |
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| Flat 177, Princess Park Manor, Royal Drive798 m away | 98 m² | 118 m² | +20 m² +20% | 2018 |
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| 7, Torrington Avenue958 m away | 67 m² | 87 m² | +20 m² +30% | 2016 |
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| 12, Beaconsfield Road578 m away | 48 m² | 68 m² | +20 m² +42% | 2010 |
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| 52, Brunswick Crescent776 m away | 68 m² | 87 m² | +19 m² +28% | 2023 |
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| 1, Buxted Road460 m away | 93 m² | 112 m² | +19 m² +20% | 2022 |
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| 13, Kettlewell Close941 m away | 113 m² | 132 m² | +19 m² +17% | 2014 |
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| Flat 6, Princess Park Manor, Royal Drive766 m away | 95 m² | 114 m² | +19 m² +20% | 2012 |
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| 12, Glenthorne Road418 m away | 58 m² | 76 m² | +18 m² +31% | 2026 |
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| 30, Bawtry Road650 m away | 80 m² | 98 m² | +18 m² +23% | 2024 |
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| 6, Thurlestone Avenue831 m away | 90 m² | 108 m² | +18 m² +20% | 2022 |
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| 318, Oakleigh Road North736 m away | 50 m² | 68 m² | +18 m² +36% | 2021 |
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| 147a, Friern Park742 m away | 71 m² | 88 m² | +17 m² +24% | 2026 |
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| 40, Fernwood Crescent792 m away | 76 m² | 93 m² | +17 m² +22% | 2023 |
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| 3, Catterick Close947 m away | 96 m² | 113 m² | +17 m² +18% | 2022 |
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| 4, Viscount Close929 m away | 103 m² | 120 m² | +17 m² +17% | 2020 |
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| 34, Macdonald Road424 m away | 60 m² | 77 m² | +17 m² +28% | 2019 |
|---|
| 8, Kettlewell Close941 m away | 78 m² | 94 m² | +16 m² +21% | 2024 |
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| 17, Balfour Grove550 m away | 92 m² | 108 m² | +16 m² +17% | 2023 |
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| Flat 94, Princess Park Manor, Royal Drive823 m away | 60 m² | 76 m² | +16 m² +27% | 2020 |
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| 127a, Friern Barnet Road496 m away | 59 m² | 75 m² | +16 m² +27% | 2019 |
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| 6, Woodland Road939 m away | 48 m² | 64 m² | +16 m² +33% | 2012 |
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