125, Thirlmere Avenue, Slough, SL1 6EB

1. 14 Sep 2026

   Received by Slough

2. 14 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 9 November 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 full applications in a median of 61 days. More in our guide to how long planning decisions take.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 93, Thirlmere Avenue, Slough, SL1 6EB

  P/17607/000 Submitted 7 Dec 2018 50 yards away

  Construction of a single storey rear extension

  Granted Full applications Extension 3 docs
  Small domestic

• 44, Priory Road, Slough, SL1 6DR

  Y/17955/000 Submitted 18 Dec 2019 100 yards away

  The erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 6m, with a maximum height of 3.3m, and an eaves height of 3m

  Granted Prior approval Extension 2 docs
  Small domestic

• 46, Priory Road, Slough, SL1 6DR

  Y/02549/001 Submitted 16 Feb 2026 100 yards away

  The erection of a single storey rear extension, which would extend beyond the re

  Granted Prior approval Extension
  Small domestic

• 121, Thirlmere Avenue, Slough, SL1 6EB

  P/20144/000 Submitted 9 Feb 2023 200 yards away

  Replacement windows to front and rear elevation of ground floor flat

  Granted Full applications Windows or glazing 3 docs

• 33, Buttermere Avenue, Slough, SL1 6EF

  P/20961/000 Submitted 9 Dec 2025 200 yards away

  Construction of a single storey rear and part side extension for disabled use an

  Granted Full applications Extension
  Small domestic

• 99 Huntercombe Lane North Slough Slough SL1 6DT

  PL/25/3274/SA Submitted 29 Aug 2025 200 yards away

  Single storey side extension to replace existing attached garage, single storey rear extension, loft conversion into habitable accommodation incorporating side dormers, rooflights, additional front window and enlargement of existing rear window opening and additional hardstanding.

  Refused Lawful development Extension Loft or dormer +1 8 docs
  Small domestic

• P/21185/000 Awaiting decision

  4, Hunstanton Close, Colnbrook, Slough, SL3 0RL

  Conversion of garage into habitable room

  Received 9 Oct, published by the council 12 Oct 2026 Full applications
• P/16962/002 Awaiting decision

  1, Odencroft Road, Slough, SL2 2BS

  Construction of a part single storey, part two storey side and rear extension to existing dwelling.

  Received 9 Oct, published by the council 12 Oct 2026 Full applications
• P/20300/007 Awaiting decision

  28, Gilliat Road, Slough, SL1 3QX

  Installation of air conditioning unit to the external rear wall.

  Received 8 Oct, published by the council 12 Oct 2026 Full applications
• P/21181/000 Awaiting decision

  96, Grasmere Avenue, Slough, SL2 5JF

  Construction of a single storey front & rear and two storey side extension

  Received 7 Oct, published by the council 12 Oct 2026 Full applications
• P/08479/003 Awaiting decision

  11, Ives Road, Slough, Slough, SL3 8PB

  Retrospective application for the retention of a single storey rear extension built to an increase height.

  Received 7 Oct, published by the council 12 Oct 2026 Full applications