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Planning application

10/21/0527

10 Observatory Road Blackburn BB2 3HE

Granted Blackburn with Darwen Full Planning Application

Proposal

Erection of double storey extension to side

As published by the council, reference 10/21/0527

Timeline

Dates from the published record

  1. 20 May 2021

    Received by Blackburn with Darwen

  2. 24 May 2021

    Validated

    Checked as complete and ready for consideration.

  3. 16 Jul 2021

    Decision issued: Permits

  4. 21 Jul 2026

    Added to PlanIndex

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About full applications applications

How this application type works

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

Nearby applications

Within 500 metres

  • 10/26/0478 Awaiting decision

    Plots 49-52 Meadowbrook Rise Blackburn BB2 3JG

    Erection of 1No detached self-build house with associated external works and parking

    22 May 2026 166m away Full applications
  • 10/24/1102 Withdrawn

    91 Meadowbrook Rise Blackburn BB2 3JG

    Erection of single storey extension to rear

    10 Dec 2024 170m away Full applications
  • 10/21/0341 Granted

    Land Adjacent to Royal Blackburn Teaching Hospital, East Lancs Hospitals NHS Trust Old Bank Lane Blackburn BB2 3HH

    Proposed single storey satelite renal dialysis unit, associated parking and services area. (Revision to previously permitted scheme ref 10/17/0177)

    1 Apr 2021 205m away Full applications
  • 10/16/0208 Refused

    3 Guernsey Avenue Blackburn BB2 3EF

    Retention of rear extension

    29 Feb 2016 343m away Full applications
  • 10/26/0069 Awaiting decision

    Kaleidoscope Youth Centre Lindisfarne Avenue Blackburn BB2 1DH

    Demolition of single storey buildings previously used as a youth centre

    26 Jan 2026 393m away Prior approval

In Blackburn with Darwen

  • 10/26/0529 Awaiting decision

    Longshaw Head Barn Crowthorn Road Edgworth Bolton BL7 0JX

    Proposed two storey side / rear extension with front, rear dormers and external alterations to dwelling

    8 Jun 2026 Full applications
  • 10/26/0518 Awaiting decision

    207-209 Duckworth Street Darwen BB3 1AU

    Change of use of first floor to create new two bedroom flat (Use Class C3) and external alterations to side elevation

    3 Jun 2026 Full applications
  • 10/26/0520 Awaiting decision

    54 Lammack Road Blackburn BB1 8JX

    Demolition of existing garage and proposed double storey extension to side, front and rear and single storey rear extension

    3 Jun 2026 Full applications
  • 10/26/0516 Awaiting decision

    207 Burnley Road Blackburn BB1 3HW

    Conversion of garage to habitable room, rear single storey extension and front porch

    2 Jun 2026 Full applications
  • 10/26/0514 Awaiting decision

    54 York Crescent Blackburn BB1 9NW

    Proposed single storey side and rear extension

    2 Jun 2026 Full applications