Loft conversion and dormer planning approval rate in Greater Cambridge
87% of 23 decided loft conversion and dormer 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.
87%
Approval rate, all years, from 23 decided
23
decided loft conversion and dormer applications in Greater Cambridge: 20 approved, 3 refused
Unknown
Recent rate, decided since 2022: only 5 decided, fewer than 8
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 Withdrawn applications are excluded.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 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 |
|---|---|---|---|
| 24/01749/HFUL | 2024 | Refused | Raising ridge of the dwelling and widening of existing dormer window. 107 Hemingford Road Cambridge Cambridgeshire CB1 3BY |
| 23/03307/HFUL | 2023 | Approved | Roof extension with a raised ridge height and side facing box dormer windows. Removal of existing chimney. 76 Lambs Lane Cottenham Cambridgeshire CB24 8TA |
| 20/05117/NMA1 | 2022 | Approved | Non-material amendment on planning permission 20/05117/HFUL for the addition of an obscure glazed window to side of loft conversion 10 Highworth Avenue Cambridge Cambridgeshire CB4 2BG |
| 22/01745/CL2PD | 2022 | Approved | Certificate of lawfulness under S192 for replacing the hanging tiles of a loft conversion with rear facing dormer with composite material cladding. 21 Fernlea Close Cambridge Cambridgeshire CB1 9LW |
| 21/00203/S73 | 2021 | Refused | S73 variation of condition 2 (Approved plans) of planning permission 20/02850/HFUL (Garage conversion and first-floor dormer windows to front, sides and rear... 27 West End Whittlesford CB22 4LX |
| 17/1140/FUL | 2017 | Refused | Rear roof extension 68 Abbey Road Cambridge CB5 8HQ |
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
- Side extension 96%, 72 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