Rear extension planning approval in St Albans
Based on decisions in the last 5 years, as of 23 Apr 2026.
Of 156 rear extension planning applications decided by St Albans in the last 5 years, 86% 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 St Albans
- Extension : 84% approved (201 decided)
- Loft conversion : 79% approved (76 decided)
- Roof / fenestration : 85% approved (73 decided)
- Tree work : 100% approved, no recorded refusals (71 decided)
- Side extension : 77% approved (52 decided)
- Demolition : 85% approved (46 decided)
Method
Approval rate = approved ÷ (approved + refused) over the public planning decisions we hold for St Albans, matched to a type of work from the application description. We lead with the last few years so the figure reflects how St Albans 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 rear extension?
4 architects with public evidence are listed for St Albans. Their profiles show reviews, credentials and, where we hold it, real planning history in this council.