12 St Thomas Street Blackburn BB1 1PB Data via plota.co.uk
Proposal
Erection of single storey rear extension 6.000m from original rear wall, Max Height: 2.700m, Height to Eaves: 2.450m Data via plota.co.uk
Application progress
Approved on 22 May 2026 · Delegated · Last checked 1 Oct 2026
Documents 5
Decision & officer reports 2
Plans & drawings 2
Application forms 1
Site constraints 3
Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, the Mining Remediation Authority, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
Building
From the energy performance certificate lodged in November 2009, the latest held for this property, matched to this application by its address. The building may have changed since. View the certificate
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Important details
- Council
- Blackburn
- Application type
- Householder Notification - Single storey rear extension
- Postcode
- BB1 1PB
- Received
- 21 Apr 2026
- Validated
- 23 Apr 2026
- Ward
- Audley & Queens Park
- Parish
- Blackburn
- Case officer
- Show
- Target decision
- 4 Jun 2026
- Decision
- Prior Approval is not required
- Decision date
- 22 May 2026
- Decision level
- Delegated
- Applicant
- Show
- Agent
- Show
How this decision compares
Decided in 29 days from validation, 23 days faster than Blackburn's median of 52 for extensions. Approved, as 99% of extensions here are.
Plota live figures for extensions decided by Blackburn in the last twelve months, from validation. Blackburn decision record →
Consultation & key dates
- Statutory expiry
- 4 Jun 2026
Historical activity at this location
7 nearby applications on record - archival context, not part of the live application.
Nearby activity
Blackburn is faster than most councils at deciding householder applications, ranking #90 out of 296. Householder applications are more likely to be approved here than most councils, with a 98% approval rate vs 90% nationally.
Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.
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12 St Thomas Street Blackburn BB1 1PB
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