Loft conversion and dormer planning approval rate in Blackburn
75% of 694 decided loft conversion and dormer applications in Blackburn 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.
75%
Approval rate, all years, from 694 decided
694
decided loft conversion and dormer applications in Blackburn: 518 approved, 176 refused
Unknown
Recent rate, decided since 2022: no 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 Withdrawn applications are excluded. The eight-record threshold is a display rule, not a guarantee that a sample is statistically reliable.
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.
Coverage for this project type
No records in this group have a recorded year. 694 of 694 decided records have no year recorded. Coverage may have gaps within the date range.
Recent coverage is unavailable. We have no dated records from 2022 onwards for this project type in Blackburn. This does not mean the council received no applications.
These project categories can include different application routes and proposals combining several kinds of work. Read the proposal and decision type before comparing it with your project.
Check planning requirements in Blackburn, or read about permitted development in Blackburn. An approval rate does not decide which route your property qualifies for.
Example loft conversion and dormer decisions in Blackburn
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.
Visit Blackburn's official website to find its planning register and search the references below. Descriptions may be shortened.
| Reference | Year | Decision | Application |
|---|---|---|---|
| 10/00/0399 | Unknown | Approved | Proposed rear ground and first floor extension and second floor dormer extension 29 London Road Blackburn BB1 7HA |
| 10/00/0538 | Unknown | Approved | Extend existing front dormer 144 Haslingden Road Blackburn BB2 3HJ |
| 10/00/0616 | Unknown | Approved | Stores, stables and loft Sniddle Hill Barn Sniddle Hill Lane Darwen BB3 2UE |
| 10/01/0665 | Unknown | Refused | Erection of double storey with dormer extension to rear 16 Millham Street Blackburn BB1 6EU |
| 10/01/0907 | Unknown | Refused | Erection of Dormer Extension to rear 10 Blackburn Street Blackburn BB1 7NG |
| 10/01/0947 | Unknown | Refused | Proposed first floor extension and dormer conversion 11 Lancaster Place Blackburn BB2 6JT |
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 Blackburn
- Single-storey rear extension 89%, 2,474 decided
- Two-storey rear extension 80%, 724 decided
- Wraparound extension 88%, 249 decided
- Side extension 86%, 1,021 decided
- Rooflight 98%, 98 decided
- Outbuilding and garden room 85%, 198 decided
- Porch 88%, 554 decided
- Garage conversion 89%, 263 decided
- Basement 86%, 88 decided
- Window and door 91%, 567 decided