Outbuilding / garden room planning approval in Southampton
Based on decisions in the last 5 years, as of 20 May 2026.
Of 42 outbuilding / garden room planning applications decided by Southampton in the last 5 years, 93% 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 Southampton
- Extension : 94% approved (379 decided)
- Rear extension : 95% approved (245 decided)
- Tree work : 85% approved (164 decided)
- Change of use : 86% approved (124 decided)
- Roof / fenestration : 96% approved (89 decided)
- Loft conversion : 92% approved (77 decided)
- Side extension : 96% approved (76 decided)
- Demolition : 96% approved (54 decided)
Method
Approval rate = approved ÷ (approved + refused) over the public planning decisions we hold for Southampton, matched to a type of work from the application description. We lead with the last few years so the figure reflects how Southampton 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.