Highfield House 8 High Road Cookham Maidenhead SL6 9HR

1. 25 Jun 2021

   Received by Windsor and Maidenhead

2. 18 Aug 2021

   Decision issued: Permitted Development

3. 16 Aug 2026

   Added to PlanIndex

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.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 6 - 7 Fair View Cottages High Road Cookham Maidenhead

  21/01804/FULL Submitted 10 Jun 2021 21m away

  Single story side/rear extensions.

  Granted Full applications Extension 16 docs

• 7 Fair View Cottages High Road Cookham Maidenhead SL6 9JE

  21/00896/CPD Submitted 23 Mar 2021 23m away

  Certificate of lawfulness to determine whether the proposed single storey side/rear extension and alterations to fenestration is lawful.

  Refused Lawful development Extension Windows or glazing 13 docs
  Small domestic

• 6 Fair View Cottages High Road Cookham Maidenhead SL6 9JE

  21/00895/CPD Submitted 23 Mar 2021 26m away

  Certificate of lawfulness to determine whether the proposed single storey side/rear extension and alterations to fenestration is lawful.

  Refused Lawful development Extension Windows or glazing 13 docs
  Small domestic

• Hillrise Lower Road Cookham Maidenhead SL6 9HF

  26/00352/FULL Submitted 10 Feb 2026 27m away

  1no. self-build dwelling following demolition of existing dwelling and outbuilding.

  Refused Full applications New dwelling Demolition 40 docs
  Small domestic

• Worster House Worster Road Cookham Maidenhead SL6 9JG

  25/02147/CPD Submitted 22 Aug 2025 46m away

  Certificate of lawfulness to determine whether the proposed single storey side extension and 1no. carport is lawful.

  Granted Lawful development Extension 11 docs
  Small domestic

• 19 Coxborrow Close Cookham Maidenhead SL6 9HH

  22/01639/PDXL Submitted 16 Jun 2022 60m away

  Single storey rear extension no greater than 3.50m in depth, 3.46m high with an eaves height of 2.30m.

  Withdrawn Prior approval Extension 8 docs
  Small domestic

• 26/01615/CLU Granted

  Riding Court Farm Riding Court Riding Court Road Datchet Slough SL3 9JT

  Certificate of lawfulness to determine whether the existing units 'JKL' (use class B8) used for storage and distribution; unit 'AB' (use class B8) used for hiring, maintaining, and cleaning concrete screed and machinery and 'storage yard 2' (use class B8) used for the storage of scaffolding is lawful.

  1 Jul 2026 Lawful development
• 26/01581/CLD Granted

  The George Public House The Brewhouse The Green Holyport Road Holyport Maidenhead

  Certificate of lawfulness to determine whether the existing bollard is lawful.

  26 Jun 2026 Lawful development
• 26/01389/CLD Granted

  Redwood 88 Bolton Road Windsor SL4 3JG

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

  5 Jun 2026 Lawful development
• 26/02060/CPD Awaiting decision

  13 Orchard Grove Maidenhead SL6 6DR

  Certificate of lawfulness to determine whether the proposed hip to gable roof alteration, 2 no. front rooflights and 1 no. rear dormer is lawful.

  20 Aug 2026 Lawful development
• 26/01564/CPD Refused

  Long Chase Farm Ascot Road Holyport Maidenhead SL6 3LA

  Rear two storey extension to Long Chase Farmhouse under Class A of Part 1 of the GPDO 2015,As Amended.

  25 Jun 2026 Lawful development