Extension planning approval in Wandsworth
Based on decisions in the last 5 years, as of 23 Jun 2026.
Of 3,537 extension planning applications decided by Wandsworth in the last 5 years, 91% were approved. This is the council's track record for this kind of work. It is a useful gauge before you apply, not a guarantee for any one application.
Other work in Wandsworth
- Rear extension : 90% approved (1,535 decided)
- Side extension : 94% approved (1,018 decided)
- Demolition : 94% approved (981 decided)
- Basement : 92% approved (810 decided)
- Balcony / roof terrace : 89% approved (739 decided)
- Tree work : 95% approved (664 decided)
- Loft conversion : 87% approved (670 decided)
- Roof / fenestration : 91% approved (547 decided)
Method
Approval rate = approved ÷ (approved + refused) over the public planning decisions we hold for Wandsworth, matched to a type of work from the application description. We lead with the last few years so the figure reflects how Wandsworth decides today, with the longer record as context. A rate is only shown once there are enough decided applications for it to be reliable. We publish aggregate figures only, never an individual application or applicant name. Read the full method and limits.