Wraparound extension planning approval rate in Merton
91% of 758 decided wraparound extension applications in Merton 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.
91%
Approval rate, all years, from 758 decided
758
decided wraparound extension applications in Merton: 688 approved, 70 refused
90%
Recent rate, decided since 2022, from 366 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 Withdrawn applications are excluded. The eight-record threshold is a display rule, not a guarantee that a sample is statistically reliable.
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.
Coverage for this project type
Dated records in this archive span 1988 to 2026. 0 of 758 decided records have no year recorded. Coverage may have gaps within the date range.
366 decided records are dated 2022 or later. This is an archive count, not a measure of all current council activity.
These project categories can include different application routes and proposals combining several kinds of work. Read the proposal and decision type before comparing it with your project.
Check planning requirements in Merton, or read about permitted development in Merton. An approval rate does not decide which route your property qualifies for.
Example wraparound extension decisions in Merton
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.
Search Merton's planning register using the references below. Descriptions may be shortened; read the complete proposal and decision notice.
| Reference | Year | Decision | Application |
|---|---|---|---|
| 25/P1185 | 2026 | Approved | ERECTION OF SINGLE STOREY SIDE AND REAR EXTENSION. |
| 25/P3175 | 2026 | Approved | APPLICATION FOR A LAWFUL DEVELOPMENT CERTIFICATE IN RESPECT OF THE PROPOSED ERECTION OF A SIDE AND REAR EXTENSION. |
| 25/P3190 | 2026 | Approved | ERECTION OF A SINGLE STOREY SIDE AND REAR EXTENSION WITH A RAISED PLATFORM AT REAR, AND ADDITION OF A 350MM TRELLIS ON TOP OF THE EXISTING BOUNDARY FENCE WIT... |
| 25/P3229 | 2026 | Refused | APPLICATION FOR THE ERECTION OF A SINGLE STOREY SIDE AND REAR EXTENSION. |
| 24/P2327 | 2025 | Refused | JOINT PROPOSAL FOR A SINGLE-STOREY FIRST FLOOR REAR AND PART SIDE WRAP-AROUND EXTENSIONS. |
| 24/P3394 | 2025 | Refused | ERECTION OF A GROUND FLOOR REAR AND SIDE EXTENSION, AND REAR EXTENSION PROPOSED ON FIRST AND SECOND FLOOR. |
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 Merton
- Single-storey rear extension 81%, 4,141 decided
- Two-storey rear extension 77%, 872 decided
- Side extension 83%, 861 decided
- Loft conversion and dormer 87%, 1,418 decided
- Rooflight 93%, 1,814 decided
- Outbuilding and garden room 82%, 413 decided
- Porch 89%, 128 decided
- Garage conversion 96%, 157 decided
- Basement 90%, 472 decided
- Window and door 94%, 456 decided