Two-storey rear extension planning approval rate in Greater Cambridge
86% of 81 decided two-storey rear 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.
86%
Approval rate, all years, from 81 decided
81
decided two-storey rear extension applications in Greater Cambridge: 70 approved, 11 refused
77%
Recent rate, decided since 2022, from 22 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 Withdrawn applications are excluded.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 two-storey rear 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 |
|---|---|---|---|
| 26/00125/HFUL | 2026 | Approved | Demolition of attached single storey rear outbuilding and construction of a two storey rear extension. 6 Stulpfield Road Grantchester Cambridgeshire CB3 9NL |
| 25/03339/S73 | 2025 | Approved | S73 to vary condition 2 (approved drawings) of planning permission 25/02083/HFUL (Two storey rear extension with part single storey rear and side extension f... 26 Almoners Avenue Cambridge Cambridgeshire CB1 8PA |
| 25/03349/HFUL | 2025 | Approved | Part single storey, part two storey rear extensions. 146 Vinery Road Cambridge Cambridgeshire CB1 3DT |
| 25/03707/HFUL | 2025 | Refused | First floor rear extension to existing balcony, alteration to first floor rear fenestration and installation of new external staircase. Thyme House 17 Babraham Road Sawston Cambridgeshire CB22 3DQ |
| 21/04322/HFUL | 2022 | Refused | Two storey side, part two and single storey rear extensions. Formation of a new roof and rear dormer including a juliet balcony with 3no rooflights to front... 22 The Westering Cambridge CB5 8SF |
| 22/00162/HFUL | 2022 | Refused | Two-storey rear extension, conversion of garage to habitable space and alterations to front porch/entrance 10 Priams Way Stapleford Cambridge Cambridgeshire CB22 5DT |
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
- Wraparound extension 100%, 28 decided
- Side extension 96%, 72 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