Loft conversion and dormer planning approval rate in Southwark
86% of 1,006 decided loft conversion and dormer applications in Southwark 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.
86%
Approval rate, all years, from 1,006 decided
1,006
decided loft conversion and dormer applications in Southwark: 862 approved, 144 refused
82%
Recent rate, decided since 2022, from 411 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 Withdrawn applications are excluded.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 loft conversion and dormer decisions in Southwark
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/AP/2191 | 2026 | Approved | Construction of dormer extension above rear return and elevational alterations at roof level. |
| 25/AP/2383 | 2026 | Approved | Loft conversion with rear dormer |
| 25/AP/2711 | 2026 | Approved | Internal reconfiguration of existing building and the addition of a single storey roof extension to provide 2no. residential dwellings with associated cycle... |
| 25/AP/3086 | 2026 | Refused | Construction of first and second floor extension along with mansard roof extension to provide additional 4 no. self-contained flats |
| 25/AP/3147 | 2026 | Refused | Construction of a roof extension. |
| 25/AP/3543 | 2026 | Refused | Construction of a mansard loft extension with two front and rear roof windows |
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 Southwark
- Single-storey rear extension 92%, 2,018 decided
- Two-storey rear extension 92%, 470 decided
- Wraparound extension 95%, 745 decided
- Side extension 95%, 644 decided
- Rooflight 95%, 1,278 decided
- Outbuilding and garden room 90%, 307 decided
- Porch 97%, 90 decided
- Garage conversion 98%, 54 decided
- Basement 95%, 2,064 decided
- Window and door 95%, 1,546 decided