Side extension planning approval in Brent
Based on decisions in the last 5 years, as of 10 Jun 2026.
Of 457 side extension planning applications decided by Brent in the last 5 years, 70% 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 Brent
- Extension : 71% approved (2,051 decided)
- Rear extension : 70% approved (1,504 decided)
- Loft conversion : 73% approved (923 decided)
- Roof / fenestration : 75% approved (948 decided)
- Demolition : 74% approved (711 decided)
- Two-storey extension : 63% approved (305 decided)
- Windows & doors : 88% approved (252 decided)
- Balcony / roof terrace : 76% approved (270 decided)
Method
Approval rate = approved ÷ (approved + refused) over the public planning decisions we hold for Brent, matched to a type of work from the application description. We lead with the last few years so the figure reflects how Brent 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.
Ready to plan your side extension?
4 architects with public evidence are listed for Brent. Their profiles show reviews, credentials and, where we hold it, real planning history in this council.