Side extension planning approval rate in Middlesbrough
88% of 609 decided side extension applications in Middlesbrough were approved.
Checked against 20.6 million UK planning applications on file across 420 planning authorities. Approval rates from 2,343,419 decisions we classified across 181 councils in England.
A similar project nearby can help you understand the council's decisions. Its outcome does not establish what will be acceptable at your address.
88%
Approval rate, all years, from 609 decided
609
decided side extension applications in Middlesbrough: 538 approved, 71 refused
65%
Recent rate, decided since 2022, from 109 decided
How to read these rates
These are historical outcomes for the applications in our archive, not the chance of approval for your property. Compare the same project type and read the decided count alongside each percentage.
About the planning data
Rate = approved divided by approved plus refused, using the decisions in our classified archive. Rates are withheld as unknown where fewer than 8 records of that project type were decided. Withdrawn applications are excluded.
Recent means records dated 2022 or later. Records without a year are excluded from the recent rate but remain in the all-years figure. Historical coverage varies by council, and duplicate application references may remain in the archive.
Approval rates from 2,343,419 decisions we classified across 181 councils in England. The wider 20.6 million application catalogue is accessible through PlanIT; it is not the dataset used to calculate these percentages.
Read the full methodology and coverage notes.
Project types and outcomes are classified from council records. Check the original application and decision notice before relying on an individual example. A page rebuild does not mean every council record has just been refreshed.
Example side extension decisions in Middlesbrough
These examples deliberately include approved and refused applications where available. They are not a representative sample or a list of the latest decisions. Look up each reference on the council's planning search to read the plans and decision notice.
| Reference | Year | Decision | Application |
|---|---|---|---|
| 25/0490/FUL | 2026 | Approved | Two storey extension to side 8 Bentinck Avenue, Middlesbrough, TS5 6RU |
| 25/0543/FUL | 2026 | Refused | Two storey extension to side and single storey extension to rear 7, Cambridge Avenue, Middlesbrough, TS7 8EH |
| 25/0560/FUL | 2026 | Refused | Two storey extension to side with pitched roof and single storey extension to rear 4, Marlsford Grove, Middlesbrough, TS5 8PH |
| 25/0652/FUL | 2026 | Refused | Two storey extension to side with open ground floor 105 Green Lane, Middlesbrough TS5 7AQ |
| 24/0338/FUL | 2025 | Approved | Erection of 2 storey side extension and garage to side 25 Milfoil Close , Middlesbrough, TS7 8SE |
| 24/0378/FUL | 2025 | Approved | Two storey extension to side (demolition of existing double garage) 43 , Brookfield Avenue, Middlesbrough, Middlesbrough, TS5 8HA |
About the planning data
Checked against 20.6 million UK planning applications on file across 420 planning authorities. Approval rates from 2,343,419 decisions we classified across 181 councils in England.
Other project types in Middlesbrough
- Single-storey rear extension 94%, 2,221 decided
- Two-storey rear extension 84%, 529 decided
- Wraparound extension 67%, 12 decided
- Loft conversion and dormer 83%, 287 decided
- Rooflight 93%, 122 decided
- Outbuilding and garden room 92%, 104 decided
- Porch 96%, 229 decided
- Garage conversion 96%, 253 decided
- Basement 91%, 11 decided
- Window and door 95%, 549 decided