Side extension planning approval in Middlesbrough
Based on decisions in the last 5 years, as of 7 Nov 2025.
Of 66 side extension planning applications decided by Middlesbrough in the last 5 years, 67% 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 Middlesbrough
- Extension : 76% approved (941 decided)
- Demolition : 83% approved (200 decided)
- Change of use : 68% approved (179 decided)
- Two-storey extension : 58% approved (183 decided)
- Tree work : 98% approved (84 decided)
- Rear extension : 76% approved (132 decided)
- Loft conversion : 59% approved (101 decided)
- Boundary wall / fence / gates : 80% approved (95 decided)
Method
Approval rate = approved ÷ (approved + refused) over the public planning decisions we hold for Middlesbrough, matched to a type of work from the application description. We lead with the last few years so the figure reflects how Middlesbrough 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.