Side extension planning approval rate in Greater Cambridge
96% of 72 decided side extension applications in Greater Cambridge 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.
96%
Approval rate, all years, from 72 decided
72
decided side extension applications in Greater Cambridge: 69 approved, 3 refused
95%
Recent rate, decided since 2022, from 21 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 Withdrawn applications are excluded.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 side extension decisions in Greater Cambridge
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 |
|---|---|---|---|
| 24/02505/FUL | 2025 | Approved | Two storey side extension to the OWL Building. Eastern Counties Leather Industrial Estate London Road Pampisford Cambridgeshire CB22 3FJ |
| 25/02622/HFUL | 2025 | Approved | Single Storey Rear/Side Extension with addition of 1.no roof lantern. 12 Lichfield Road Cambridge Cambridgeshire CB1 3SS |
| 25/03318/HFUL | 2025 | Approved | Two storey side extension with installation of EV Charger to front elevation. Single storey rear extension. Roof extensions including rear dormer extension a... 7 Bishops Road Cambridge Cambridgeshire CB2 9NQ |
| 22/03501/HFUL | 2023 | Refused | Demolition of single storey element with balcony above and erection of replacement single storey rear extension with reduced balcony above, part two storey,... 14 Aylestone Road Cambridge Cambridgeshire CB4 1HF |
| 17/1076/FUL | 2017 | Refused | First floor side extension. 323 Ditton Fields Cambridge Cambridgeshire CB5 8QJ |
| S/0834/16/FL | 2016 | Refused | Ground floor side extension and first floor extension to provide extra bedroom with ensuite 7 Sheralds Croft Lane Thriplow Royston SG8 7RB |
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 Greater Cambridge
- Single-storey rear extension 94%, 155 decided
- Two-storey rear extension 86%, 81 decided
- Wraparound extension 100%, 28 decided
- Loft conversion and dormer 87%, 23 decided
- Rooflight 94%, 33 decided
- Outbuilding and garden room 92%, 37 decided
- Porch 100%, 11 decided
- Garage conversion 94%, 17 decided
- Basement 100%, 10 decided
- Window and door 91%, 57 decided