Loft conversion and dormer planning approval rate in South Downs National Park
90% of 81 decided loft conversion and dormer applications in South Downs National Park 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.
90%
Approval rate, all years, from 81 decided
81
decided loft conversion and dormer applications in South Downs National Park: 73 approved, 8 refused
96%
Recent rate, decided since 2022, from 28 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 Withdrawn applications are excluded.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 South Downs National Park
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 |
|---|---|---|---|
| SDNP/25/03735/HOUS | 2026 | Approved | Enlargement of existing studio flat by creating a dormer on the west roof slope, relocation of entrance door and new access staircase, 3no. conservation type... St Annes Lodge, The Studio Rotten Row Lewes East Sussex BN7 1TN |
| SDNP/25/03779/HOUS | 2026 | Approved | Replace front and rear dormer windows and rear first floor windows, widen rear dormer, relocate soil vent pipe and remove chimney pot, satellite dish and TV... 4 Castle Banks Lewes East Sussex BN7 1UZ |
| SDNP/24/04728/HOUS | 2025 | Approved | Retrospective application for dormer Highden, Stable Cottage London Road Washington West Sussex RH20 4BA |
| SDNP/22/01815/HOUS | 2022 | Refused | Enlargement of existing rear dormer extension and replacement of front dormer windows 1 Priory Terrace Mountfield Road Lewes East Sussex BN7 2UT |
| SDNP/20/05220/HOUS | 2021 | Refused | Loft conversion including the insertion of rear dormer 26 Lee Road Lewes East Sussex BN7 2SF |
| SDNP/21/04493/HOUS | 2021 | Refused | Loft conversion with hip to gable-end, rear ground floor extension, on-site vehicle parking and vehicle crossover to existing highway access. 51 High Street Findon Worthing West Sussex BN14 0ST |
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 South Downs National Park
- Single-storey rear extension 93%, 248 decided
- Two-storey rear extension 90%, 89 decided
- Wraparound extension 90%, 20 decided
- Side extension 91%, 139 decided
- Rooflight 93%, 85 decided
- Outbuilding and garden room 89%, 166 decided
- Porch 96%, 57 decided
- Garage conversion 95%, 40 decided
- Basement 95%, 19 decided
- Window and door 94%, 257 decided