Outbuilding and garden room planning approval rate in Horsham
89% of 292 decided outbuilding and garden room applications in Horsham 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 292 decided
292
decided outbuilding and garden room applications in Horsham: 259 approved, 33 refused
89%
Recent rate, decided since 2022, from 110 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 Withdrawn applications are excluded.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 Horsham
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 |
|---|---|---|---|
| DC/25/1323 | 2026 | Approved | Demolition of existing barn and erection of new outbuilding (triple garage). New oak gates to replace 5 bar gate. Sweetmans Barn The Village Ashurst Steyning West Sussex BN44 3AP |
| DC/25/1460 | 2026 | Approved | Demolition of the existing log cabin and erection of a new garden room and covered pergola (part retrospective). Moustows Cottage Henfield Common North Henfield West Sussex BN5 9RL |
| DC/26/0001 | 2026 | Approved | Replace and raise the roof over the lean-to annex on side elevation, to allow floor level to be raised to improve disabled access (Full Planning). Jubilee Hall Church Street Rudgwick Horsham West Sussex RH12 3EA |
| DC/24/1404 | 2025 | Refused | Demolition of existing outbuildings and erection of a barn. Merryhill Storrington Road Thakeham West Sussex RH20 3ED |
| DC/23/2053 | 2024 | Refused | Erection of an outbuilding (Lawful Development Certificate - Proposed). The Field Brighton Road Woodmancote West Sussex BN5 9ST |
| DC/24/0724 | 2024 | Refused | Demolition of existing outbuildings and siting of log cabin style dwelling. Berts Farm Pickhurst Lane Pulborough West Sussex RH20 1DA |
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 Horsham
- Single-storey rear extension 95%, 1,102 decided
- Two-storey rear extension 91%, 444 decided
- Wraparound extension 97%, 231 decided
- Side extension 93%, 721 decided
- Loft conversion and dormer 89%, 258 decided
- Rooflight 94%, 258 decided
- Porch 98%, 181 decided
- Garage conversion 94%, 160 decided
- Basement 81%, 27 decided
- Window and door 93%, 338 decided