Side extension planning approval rate in Blackburn
86% of 1,021 decided side extension 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.
86%
Approval rate, all years, from 1,021 decided
1,021
decided side extension applications in Blackburn: 876 approved, 145 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 Withdrawn applications are excluded.
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 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.
| Reference | Year | Decision | Application |
|---|---|---|---|
| 10/00/0448 | Unknown | Approved | Two Storey Extension to side of residence Sniddle Holme Farm Bank Fold Darwen BB3 3QG |
| 10/00/0449 | Unknown | Approved | Two Storey Extension to side of residence Sniddle Holme Farm Bank Fold Darwen BB3 3QG |
| 10/00/0870 | Unknown | Approved | Two Storey Extension over and to side of existing property 8 Hesketh Close Darwen Lancashire BB3 2UR |
| 10/00/0903 | Unknown | Refused | Two Storey Side Extension 1 French Close Blackburn BB2 6SP |
| 10/01/0493 | Unknown | Refused | Proposed Double Garage and Two Storey Side Extension Woodleigh Tockholes Road Darwen BB3 1JY |
| 10/03/0025 | Unknown | Refused | First floor side extension 59 Tiverton Drive Blackburn BB2 4NR |
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
- Loft conversion and dormer 75%, 694 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