15 Warrington Spur Old Windsor Windsor SL4 2NF

1. 7 Sep 2026

   Received by Windsor and Maidenhead

2. 12 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 2 November 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Windsor and Maidenhead took a median of 55 days over the applications it decided in the last year.

This application is with Windsor and Maidenhead for determination, against a statutory target of eight weeks. Over the last year Windsor and Maidenhead decided lawful development applications in a median of 50 days. More in our guide to how long planning decisions take.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 39 Orchard Road Old Windsor Windsor SL4 2RZ

  26/01085/TPO Submitted 1 May 2026 61m away

  T1 - Sycamore - fell, G2 - Group of Sycamores - crown reduction by 3m overall to leave a final height of 16m and spread of 9m, G3 - Group of Sycamores - fell, T4 - Holly - reduce height by 3m to leave a final height of 6m and spread of 6m, T5 and T6 - 2 x Sycamores - reduce by 5m to previous pruning points to leave final height of 16m and spread of 9m.(022/2003/TPO)

  Granted Trees 7 docs

• 39 Orchard Road Old Windsor Windsor SL4 2RZ

  21/02087/TPO Submitted 6 Jul 2021 62m away

  (G1) Sycamores - reduce canopies by 3m to leave a height of 12m and spread of 5m; (T2) Holly - reduce height by 3m and spread by 1m to leave a height of 4m and spread of 2m; (T3 and T4) Sycamores - reduce canopies by 3m to leave a height of 12m and spread of 5m and (T5) Holly - fell. (TPO 22 of 2003).

  Granted Trees 6 docs

• 50 Ashbrook Road Old Windsor Windsor SL4 2NB

  21/01144/CPD Submitted 12 Apr 2021 64m away

  Certificate of lawfulness to determine whether the proposed 2no. front rooflights, single storey rear extension and rear dormer is lawful.

  Granted Lawful development Extension Loft or dormer 9 docs
  Small domestic

• 75 Ashbrook Road Old Windsor Windsor SL4 2NE

  21/01158/FULL Submitted 14 Apr 2021 76m away

  Single storey rear extension

  Granted Full applications Extension 13 docs
  Small domestic

• 1 Warrington Spur Old Windsor Windsor SL4 2NF

  21/01072/FULL Submitted 1 Apr 2021 79m away

  Single storey front/side extension and single storey rear extension.

  Granted Full applications Extension 13 docs
  Small domestic

• 21 Mills Spur Old Windsor Windsor SL4 2ND

  21/00348/FULL Submitted 8 Feb 2021 83m away

  Construction of a detached outbuilding forming a granny annexe ancillary to main dwelling.

  Granted Full applications 25 docs
  Small domestic

• 26/01553/CLU Granted

  64 Priors Way Maidenhead SL6 2EN

  Certificate of lawfulness to determine whether the existing use of building as self-contained residential dwelling as per details set out in Statutory Declaration is lawful.

  24 Jun 2026 Lawful development
• 26/02230/CPD Awaiting decision

  15 Castle Avenue Datchet Slough SL3 9BA

  Certificate of lawfulness to determine whether the proposed single storey rear extension is lawful.

  9 Sep 2026 Lawful development
• 26/01039/CPD Refused

  Touchen End House Ascot Road Holyport Maidenhead SL6 3JY

  Certificate of lawfulness to determine whether the proposed outbuilding following demolition of existing garage is lawful.

  28 Apr 2026 Lawful development
• 26/01648/CPD Granted

  38 Tilstone Close Eton Wick Windsor SL4 6NG

  Certificate of lawfulness to determine whether the proposed formation of habitable room in roofspace with side dormer, 1 No front and side rooflights, 1 No. rear window and part hip to gable is lawful.

  6 Jul 2026 Lawful development
• 26/02181/CPD Awaiting decision

  21 Lincoln Road Maidenhead SL6 5HW

  Certificate of lawfulness to determine whether the proposed single storey rear extension and 1no. rear dormer and 1no. rooflight are lawful.

  3 Sep 2026 Lawful development