Outbuilding and garden room planning approval rate in South Downs National Park
89% of 166 decided outbuilding and garden room 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.
89%
Approval rate, all years, from 166 decided
166
decided outbuilding and garden room applications in South Downs National Park: 148 approved, 18 refused
87%
Recent rate, decided since 2022, from 67 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 Withdrawn applications are excluded.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 outbuilding and garden room 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/23/04453/HOUS | 2025 | Approved | New annex with wheelchair access and accommodation for carer following demolition of storage building. Tote Hill Cottage Tote Lane Stedham West Sussex GU29 0PY |
| SDNP/24/04753/LDP | 2025 | Approved | Erection of detached, single storey incidental outbuilding with dual pitched roof. The Coach House 6 Woodfold Fernhurst West Sussex GU27 3ET |
| SDNP/24/04837/HOUS | 2025 | Refused | Demolition of existing detached garage and construction of a replacement annexe. Coombe Farm House Bull Hill Rake Rogate West Sussex GU33 7JD |
| SDNP/24/05186/LDE | 2025 | Approved | Application for the continued use of the annexe building as a separate C3 planning unit, to be used for short-term holiday lets and shorthold tenancy agreements Corner Cottage The Street Washington West Sussex RH20 4AS |
| SDNP/25/01445/DCOND | 2025 | Refused | Discharge Condition 8 - Planting Scheme of approved application SDNP/20/04048/FUL - Detached single storey annex as ancillary accommodation(additional inform... Viola Hill Ashford Lane Steep Petersfield Hampshire GU32 1AA |
| SDNP/25/01478/HOUS | 2025 | Refused | Erection of oak framed outbuilding providing ancillary accommodation following the removal of existing storage building. Burton Hill Barn Burton Park Road Barlavington West Sussex GU28 0JS |
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
- Loft conversion and dormer 90%, 81 decided
- Rooflight 93%, 85 decided
- Porch 96%, 57 decided
- Garage conversion 95%, 40 decided
- Basement 95%, 19 decided
- Window and door 94%, 257 decided