321, High Street, Slough, SL1 1BD

This site has had 2 applications since 2022: 1 approved, 0 refused.

• P/02205/012 Granted

  321, High Street, Slough, SL1 1BD

  Construction of a three storey rear extension and the addition of a 4th floor over the existing building to create 5no flats along with cycle parking and refuse storage at ground floor.

  Decided 23 May 2023 Full applications

1. 2 Jan 2026

   Received by Slough

2. 25 Jul 2026

   Added to PlanIndex

3. 10 Sep 2026

   Status changed to Registered application

4. Decision

   Awaiting decision

   Decision expected by 27 February 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Slough took a median of 56 days over the applications it decided in the last year.

This application is with Slough for determination, against a statutory target of eight weeks. Over the last year Slough decided condition discharge and variation applications in a median of 110 days. More in our guide to how long planning decisions take.

This application deals with conditions on an existing permission, supplying the details a condition requires or asking to vary or remove one, without reopening the permission itself. More in our guide to planning application types.

• 321, High Street, Slough, SL1 1BD

  P/02205/012 Submitted 26 Apr 2022 50 yards away

  Construction of a three storey rear extension and the addition of a 4th floor over the existing building to create 5no flats along with cycle parking and refuse storage at ground floor.

  Granted Full applications New dwelling Extension 5 docs
  Several homes

• 307-309, High Street, Slough, SL1 1BD

  P/00794/016 Submitted 14 Jun 2021 50 yards away

  Non material amendment of planning application P/00794/015 dated 16/03/2021 (Replacement of the part solid-part railing wall into a solid wall and erection of the dwarf wall for security purposes)

  Granted Amendments 2 docs

• 327-329, High Street, Slough, SL1 1TX

  P/02816/011 Submitted 19 Mar 2026 50 yards away

  78% historically approved · decision due ~14 May

  Retrospective application of a front glazed extension.

  Awaiting decision Full applications Extension Windows or glazing

• Salisbury House, 300-310 High Street, Slough, SL1 1NB

  P/08145/009 Submitted 7 Jun 2021 50 yards away

  Creation of an additional 3 storeys on top of existing ground floor, to create 8 new residential units. Ground Floor change of use from former Public House (Sui Generis) to Class Eb use facing High Street and Offices (Class E(g)(i) use) facing Hatfield Road. New residential units will have associated cycle storage and bin storage on the ground floor.

  Refused Full applications 8 docs

• The Pied Horse, 300, High Street, Slough, SL1 1NB

  P/08145/008 Submitted 18 May 2021 50 yards away

  Change of Use from Public House (Sui Generis) to E(b) for the sale of food and drink on the premises.

  Granted Full applications 3 docs

• 14, Wexham Road, Slough, SL1 1UA

  P/00590/004 Submitted 8 Feb 2023 100 yards away

  Remodeling of property by the formation of a second floor at roof level, in conjunction with one rear extension at first floor level over an extension to the existing garage and another rear extension at ground and first floor level adjacent to no. 12, together with bay windows at first floor level at the front and rear, to provide accommodation for an enlarged C1.

  Granted Full applications Extension Windows or glazing 6 docs

• P/02114/030 Awaiting decision

  Powerleague Fives Ltd & Slough and Eton Church of England Business & Enterprise College, Ragstone Road, Slough, SL1 2PU

  Submission of details of condition 4 (Biodiversity Net Gain) pursuant to planning permission P/02114/028 dated 16/06/2026

  Received 7 Oct, published by the council 12 Oct 2026 Conditions
• P/02411/036 Split decision

  Thames Central, Hatfield Road, Slough, SL1 1QE

  Submission of details pursuant to condition 3 (New finishes to building works) & 5 (Construction Management Plan) of planning permission P/02411/022 dated 23/11/2022

  Received 14 Oct, published by the council 25 Jul 2026 Conditions
• P/20551/002 Awaiting decision

  160, Bath Road, Slough, SL1 3XE

  Submission of details pursuant to condition 4 (Boundary Treatment), 7 (Gates) and 8 (Secured By Design) of planning permission P/20551/000 dated 12/03/2026

  10 Sep 2026 Conditions
• P/00094/130 Awaiting decision

  Horlicks Factory, Stoke Poges Lane, Slough, SL1 3NW

  Submission of details pursuant to condition 25 (Managment & Maintenance of Surface Water) 36 (Foul Drainage) of planning permission P/00094/092 dated 08/08/2024

  10 Sep 2026 Conditions
• P/00094/129 Awaiting decision

  The Horlicks Factory, Stoke Poges Lane, Slough, SL1 3NW

  Submission of details pursuant to condition 14 (Architectural details outline components) of planning permission P/00094/092 dated 08/08/2024

  Received 9 Sep, published by the council 10 Sep 2026 Conditions