Loft conversion and dormer planning approval rate in Lambeth
76% of 1,116 decided loft conversion and dormer applications in Lambeth 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.
76%
Approval rate, all years, from 1,116 decided
1,116
decided loft conversion and dormer applications in Lambeth: 843 approved, 273 refused
67%
Recent rate, decided since 2022, from 393 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 Withdrawn applications are excluded.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 2000 to 2025. 1 of 1,116 decided records have no year recorded. Coverage may have gaps within the date range.
393 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 Lambeth, or read about permitted development in Lambeth. An approval rate does not decide which route your property qualifies for.
Example loft conversion and dormer decisions in Lambeth
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 Lambeth's planning register using the references below. Descriptions may be shortened; read the complete proposal and decision notice.
| Reference | Year | Decision | Application |
|---|---|---|---|
| 22/04473/LB | 2025 | Approved | Redevelopment of the site involving the erection of three storey plus mansard building with roof top amenity space abutting the Grade II Listed Church Of St... Havilland House And The Church Of St Anselm, 13 Sancroft Street |
| 24/02422/FUL | 2025 | Approved | Refurbishment and conversion of the property from 2 residential units to 5 residential units, involving alterations to the garage to create a separate two st... |
| 24/02423/LB | 2025 | Approved | Refurbishment and conversion of the property from 2 residential units to 5 residential units, involving alterations to the garage to create a separate two st... |
| 20/01200/FUL | 2024 | Refused | Demolition of the existing garage buildings and replacement with 8 single dwelling houses with associated landscaping. Partial demolition of the existing apa... Dorchester Court |
| 20/01201/LB | 2024 | Refused | Demolition of the existing garage buildings and replacement with eight 8 dwelling houses with associated landscaping. Partial demolition of the existing apar... Dorchester Court |
| 23/03687/P1AA | 2024 | Refused | Application for prior approval for the enlargement of the dwellinghouse by construction of one additional storey at a total maximum height of 2.79m (overall... |
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 Lambeth
- Single-storey rear extension 82%, 3,310 decided
- Two-storey rear extension 77%, 359 decided
- Wraparound extension 84%, 695 decided
- Side extension 85%, 677 decided
- Rooflight 84%, 2,205 decided
- Outbuilding and garden room 77%, 190 decided
- Porch 90%, 77 decided
- Garage conversion 87%, 63 decided
- Basement 86%, 2,031 decided
- Window and door 83%, 2,107 decided