30 Belmont Park Avenue Maidenhead SL6 6JS

1. 2 Sep 2026

   Received by Windsor and Maidenhead

2. 10 Sep 2026

   Validated

   Checked as complete and ready for consideration.

3. 12 Sep 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 5 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 56 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.

• 37 Hargrave Road Maidenhead SL6 6JR

  26/00139/FULL Submitted 20 Jan 2026 100 yards away

  Part two storey part single storey side/rear extension and 1 no. outbuilding following demolition of existing elements.

  Granted Full applications Extension Demolition 16 docs
  Small domestic

• 19 Belmont Park Avenue Maidenhead SL6 6JX

  25/03047/FULL Submitted 18 Nov 2025 100 yards away

  Detached outbuilding ancillary to the main dwelling.

  Granted Full applications 10 docs
  Small domestic

• 57 Hargrave Road Maidenhead SL6 6JR

  20/02287/CPD Submitted 4 Sep 2020 100 yards away

  Certificate of lawfulness to determine whether the proposed garage conversion into habitable accommodation is lawful

  Granted Lawful development 5 docs

• 21 Hargrave Road Maidenhead SL6 6JR

  24/02292/FULL Submitted 23 Sep 2024 100 yards away

  Part single part two storey side/rear extension following demolition of existing elements.

  Granted Full applications Extension Demolition 13 docs

• 21 Hargrave Road Maidenhead SL6 6JR

  24/03036/NMA Submitted 11 Dec 2024 100 yards away

  Non material amendments to planning permission 24/02292/FULL for a flat roof to rear single storey element.

  Refused Amendments 6 docs
  Small domestic

• 2 Elton Drive Maidenhead SL6 7NA

  20/01915/FULL Submitted 31 Jul 2020 150 yards away

  Single storey side/rear extension, alteration to first floor rear window and first floor side window on west facing elevation after demolition of existing elements.

  Granted Full applications Extension Demolition +1 12 docs
  Small domestic

• 26/02222/CPD Refused

  52 Audley Way Ascot SL5 8EF

  Certificate of lawfulness to determine whether the proposed single storey rear extension following the removal of the existing conservatory is lawful.

  Received 8 Sep, published by the council 24 Sep 2026 Lawful development
• 26/01954/CPD Withdrawn

  Mulberry House Waltham Road Maidenhead SL6 3NH

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

  Received 7 Aug, published by the council 16 Aug 2026 Lawful development
• 26/01856/CLU Granted

  Apple Tree Cottage And Land Adjacent To Apple Tree Cottage Paley Street Maidenhead

  Certificate of lawfulness to determine whether the existing use of the land as a residential garden incidental to the main dwelling is lawful

  Received 28 Jul, published by the council 24 Aug 2026 Lawful development
• 26/02022/CPD Refused

  14 Church View White Waltham Maidenhead SL6 3JQ

  Certificate of lawfulness to determine whether the proposed 1no. rear dormer and alterations to fenestration are lawful

  Received 17 Aug, published by the council 2 Sep 2026 Lawful development
• 26/01862/CLU Granted

  Holyport Pre School Holyport Youth Club Moneyrow Green Holyport Maidenhead SL6 2NA

  Certificate of lawfulness to determine whether the existing use of the site as a pre-school is lawful.

  Received 29 Jul, published by the council 4 Aug 2026 Lawful development