Loft conversion and dormer planning approval rate in Croydon
75% of 1,313 decided loft conversion and dormer applications in Croydon 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.
75%
Approval rate, all years, from 1,313 decided
1,313
decided loft conversion and dormer applications in Croydon: 984 approved, 329 refused
65%
Recent rate, decided since 2022, from 551 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 Withdrawn applications are excluded.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 2001 to 2026. 0 of 1,313 decided records have no year recorded. Coverage may have gaps within the date range.
551 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 Croydon, or read about permitted development in Croydon. An approval rate does not decide which route your property qualifies for.
Example loft conversion and dormer decisions in Croydon
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 Croydon's planning register using the references below. Descriptions may be shortened; read the complete proposal and decision notice.
| Reference | Year | Decision | Application |
|---|---|---|---|
| 24/01158/FUL | 2026 | Refused | Alterations, erection of an additional storey upward extension to provide 2x additional self-contained flats (Use Class C3) with provision of balconies Parnell Court |
| 25/01100/HSE | 2026 | Approved | Reinstatement of the historic dormer window to match the existing dormer window and erection of outbuilding replacing existing shed. |
| 25/02093/GPDO | 2026 | Approved | Prior approval application of a proposed new dwellinghouses on detached buildings in commercial or mixed use under The Town and Country Planning (General Per... Melrose House |
| 25/02643/HSE | 2026 | Approved | The construction of a dormer extension in the front roof slope. (Retrospective) |
| 25/02880/FUL | 2026 | Refused | Conversion of 2 bed flat to HMO 4 persons, removal of internal staircase and the proposed erection of an external steel staircase and rear roof dormer. |
| 25/03731/HSE | 2026 | Refused | Erection of side roof extension from hipped-and-flat roof to gable-end roof, and erection of rear dormer |
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 Croydon
- Single-storey rear extension 84%, 6,179 decided
- Two-storey rear extension 75%, 2,565 decided
- Wraparound extension 80%, 866 decided
- Side extension 80%, 1,975 decided
- Rooflight 87%, 2,238 decided
- Outbuilding and garden room 75%, 719 decided
- Porch 83%, 233 decided
- Garage conversion 93%, 335 decided
- Basement 81%, 1,059 decided
- Window and door 84%, 740 decided