Loft conversion and dormer planning approval rate in Mid Sussex
3% of 29 decided loft conversion and dormer 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.
3%
Approval rate, all years, from 29 decided
29
decided loft conversion and dormer applications in Mid Sussex: 1 approved, 28 refused
6%
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 Withdrawn applications are excluded.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 loft conversion and dormer 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/26/0068 | 2026 | Refused | Demolition of 2no existing first-floor rear (north) elevation dormers, to be replaced with a new, full-width dormer. A new 3m2 porch will be added at ground... 41 College Lane Hurstpierpoint Hassocks West Sussex BN6 9AD |
| DM/24/2966 | 2025 | Refused | Proposed rear flat roof extension and cladding to front first floor elevation. 35 Blackthorns Lindfield Haywards Heath West Sussex RH16 2AX |
| DM/24/2988 | 2025 | Refused | Proposed pitched roof dormer to North/Rear elevation. 89 Janes Lane Burgess Hill West Sussex RH15 0QP |
| DM/23/2444 | 2023 | Approved | An additional storey aloft the original building only. Foresters Cottage Cross Colwood Lane Bolney Haywards Heath West Sussex RH17 5RX |
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
- Single-storey rear extension 25%, 59 decided
- Two-storey rear extension 0%, 25 decided
- Wraparound extension 0%, 9 decided
- Side extension 0%, 27 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