Single-storey rear extension planning approval rate in King's Lynn and West Norfolk
95% of 585 decided single-storey rear extension applications in King's Lynn and West Norfolk 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.
95%
Approval rate, all years, from 585 decided
585
decided single-storey rear extension applications in King's Lynn and West Norfolk: 555 approved, 30 refused
96%
Recent rate, decided since 2022, from 242 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 Withdrawn applications are excluded.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 King's Lynn and West Norfolk
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 |
|---|---|---|---|
| 25/01839/F | 2026 | Approved | Single storey rear extension Apple Tree Cottage School Lane Marham KINGS LYNN Norfolk PE33 9JA |
| 25/01920/F | 2026 | Approved | Proposed rear extension 23 Wallace Twite Way Dersingham King's Lynn Norfolk PE31 6XY |
| 25/01932/F | 2026 | Approved | HOUSEHOLDER: Single storey rear extensions Stratton House 12 St Georges Court Thornham HUNSTANTON Norfolk PE36 6NR |
| 25/02154/PAGPD | 2026 | Refused | Single storey rear extension which extends beyond the rear wall by 8 metres with a maximum height of 3.50 metres and a height of 3.20 metres to the eaves The Old Coach House 40A Lynn Road Snettisham KINGS LYNN Norfolk PE31 7QB |
| 25/01117/F | 2025 | Refused | HOUSEHOLDER- Proposed Single Storey Extension to Rear to provide disability access/accomodation 21 The Broadlands The Street Syderstone KINGS LYNN Norfolk PE31 8ST |
| 22/00785/NMA_1 | 2024 | Refused | NON MATERIAL AMENDMENT TO APPLICATION 22/00785/F: Conversion of existing garage and single storey rear extension to dwelling. The Fallows 28A Old Feltwell Road Methwold Thetford Norfolk IP26 4PW |
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 King's Lynn and West Norfolk
- Two-storey rear extension 92%, 169 decided
- Wraparound extension 95%, 76 decided
- Side extension 97%, 259 decided
- Loft conversion and dormer 94%, 139 decided
- Rooflight 100%, 46 decided
- Outbuilding and garden room 92%, 395 decided
- Porch 97%, 187 decided
- Garage conversion 96%, 84 decided
- Basement unknown, 4 decided
- Window and door 96%, 268 decided