Single-storey rear extension planning approval rate in Mid Sussex
25% of 59 decided single-storey rear extension applications in Mid Sussex 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.
25%
Approval rate, all years, from 59 decided
59
decided single-storey rear extension applications in Mid Sussex: 15 approved, 44 refused
22%
Recent rate, decided since 2022, from 18 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 Withdrawn applications are excluded.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 single-storey rear extension decisions in Mid Sussex
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 |
|---|---|---|---|
| DM/25/0096 | 2025 | Refused | Proposed single storey rear extension to existing industrial unit. Unit 19 Bolney Grange Business Park Bolney Haywards Heath West Sussex RH17 5PB |
| DM/25/1336 | 2025 | Refused | Demolition of existing rear conservatory and construction of new rear ground and first floor extension to form ground floor dining room and kitchen, and exte... More House Copyhold Lane Cuckfield Haywards Heath West Sussex RH17 5EB |
| DM/25/1444 | 2025 | Refused | Rear extension and loft conversion. 74 Western Road Hurstpierpoint Hassocks West Sussex BN6 9TB |
| DM/23/1138 | 2023 | Approved | Erection of a single storey rear extension extending beyond the rear wall of the original house by 5.5m, to a maximum height of 3.5m and the height of the ea... Grace Cottage 52 Meadow Lane Lindfield Haywards Heath West Sussex RH16 2RL |
| DM/23/1151 | 2023 | Approved | Erection of a single storey rear extension extending beyond the rear wall of the original house be 4.5 metres, to a maximum height of 4 metres and the height... 64 Hoblands Haywards Heath West Sussex RH16 3SA |
| DM/22/0789 | 2022 | Approved | Single storey rear extension extending beyond the rear of the original wall by 6m to a maximum height of 3.50m and the height of the eaves to 2.60m. Revised... 23 Fairfield Crescent Hurstpierpoint Hassocks West Sussex BN6 9SF |
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 Mid Sussex
- Two-storey rear extension 0%, 25 decided
- Wraparound extension 0%, 9 decided
- Side extension 0%, 27 decided
- Loft conversion and dormer 3%, 29 decided
- Rooflight 0%, 20 decided
- Outbuilding and garden room 4%, 26 decided
- Porch 0%, 12 decided
- Garage conversion 0%, 14 decided
- Basement unknown, 4 decided
- Window and door 3%, 39 decided