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Annex approval rate in Wandsworth

Wandsworth approved 88.5% of annex applications, based on 61 decisions analysed.

Last updated: August 2026

88.5%
annex approval rate
61
Annex decisions
54
Approved
7
Refused
93.3%
Wandsworth overall

Annex applications are refused more often than the Wandsworth average (93.3%), suggesting the council scrutinises these projects more closely.

How annex compares in Wandsworth

Annex (61 decided)
88.5%
Wandsworth all applications (28,083 decided)
93.3%

Planning a annex in Wandsworth?

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Other project types in Wandsworth

Rear Extension (6,314 decided)
93.0%
Loft Conversion (4,526 decided)
91.4%
Side Extension (3,472 decided)
93.5%
Garage / Parking (3,425 decided)
95.4%
Basement (3,238 decided)
94.7%
92.7%
Dormer (1,990 decided)
88.8%
New Build (1,734 decided)
94.1%
Extension (General) (1,667 decided)
92.5%
Outbuilding (831 decided)
91.5%
Flat Conversion (738 decided)
95.9%
82.9%
Wraparound Extension (289 decided)
92.7%
HMO (213 decided)
89.7%
Front Extension (116 decided)
87.1%
Conservatory (114 decided)
97.4%
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