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1st, 2nd, 3rd Floor Thwaites House Railway Road Blackburn BB1 5AX

10/25/1167Prior Approval - Commercial/Business/Service to DwellinghousesApproved
Outline / PiP

Approved on 5 June 2026

Council decision: Prior Approval is GivenDelegated (officer decision)

Approximate location: the centre of the postcode, not the exact property.

Proposal

Change of use to 18 self-contained flats (Use Class C3)

Received
10 November 2025
Decision level
Delegated (officer decision)
Ward
Blackburn Central
  1. Received10 Nov
  2. Validated25 Nov
  3. Consult.5 Jun
  4. Target30 Mar
  5. Decided5 Jun

Decided in 192 days (council typically 49)

About this application

This is an outline application for a change of use at 1st, 2nd, 3rd Floor Thwaites House Railway Road Blackburn BB1 5AX. Blackburn with Darwen has handled 177 applications of this type. This one was decided in 207 days, 23 weeks longer than Blackburn with Darwen's typical decision time. The site is in the Cathedral conservation area, with 4 listed buildings nearby. There are no previous applications recorded at this address. In the past year there have been 69 applications across Blackburn Central. We hold 656 applications in total for the BB1 postcode area.

90% of outline applications at Blackburn with Darwen Borough Council were approved. Across all application types, the council typically decides in about 7 weeks (median).

Based on decided applications received in the last 3 years.Planning something similar? See what gets approved on your street

Application details

Postcode
BB1 5AX
Application type
Prior Approval - Commercial/Business/Service to Dwellinghouses
Scale / size
Large
Number of dwellings
18
Parish
Blackburn

Planning application dates

Date validated
25 November 2025
Consultation expiry
5 June 2026
Consultation start
26 November 2025
Consultation end
5 June 2026
Last date for comments
30 March 2026
Target decision date
30 March 2026
Application expires
13 January 2026
Permission expires
5 June 2029

Planning decision

Statutory period
125 days

Additional information

Documents
18

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations at the address point. Ones next to the site may also apply.

  • Flood zone 2: Medium probability (rivers and sea)
  • Conservation area: Cathedral

Not published by this council, so not checked: Article 4 directions and tree preservation orders. Ask the council if these matter.

Also checked, none recorded (21)

flood storage areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Blackburn with Darwen

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