Walnut Farm Science Park Lockgate Road Sidlesham West Sussex

1. 8 May 2026

   Received by South Downs National Park

2. 15 May 2026

   Validated

   Checked as complete and ready for consideration.

3. 27 Jul 2026

   Added to PlanIndex

4. Decision

   Awaiting decision

   Decision expected by 10 July 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   South Downs National Park took a median of 54 days over the applications it decided in the last year.

This application is with South Downs National Park for determination, against a statutory target of eight weeks. Over the last year South Downs National Park decided full applications in a median of 63 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.

• 3 Walnut Farm Science Park Lockgate Road Sidlesham West Sussex PO20 7QQ

  26/00352/PLD Submitted 13 Feb 2026 0.1 miles away

  Proposed single storey extension to commercial building.

  Granted Lawful development Extension 9 docs
  Small domestic

• 3 Walnut Farm Science Park Lockgate Road Sidlesham West Sussex PO20 7QQ

  26/00352/PLD Submitted 13 Feb 2026 0.1 miles away

  Proposed single storey extension to commercial building.

  Granted Lawful development Extension 11 docs
  Small domestic

• Units 1 And 2 Walnut Farm Science Park Lockgate Road Sidlesham West Sussex PO20 7QQ

  12/00100/COU Submitted 6 Jan 2012 0.1 miles away

  Storage and preparation of cars.

  Granted Full applications 18 docs

• Units 1 And 2 Walnut Farm Science Park Lockgate Road Sidlesham West Sussex PO20 7QQ

  12/00100/COU Submitted 6 Jan 2012 0.1 miles away

  Storage and preparation of cars.

  Granted Full applications 18 docs

• Willowdene Nursery Fletchers Lane Sidlesham Chichester West Sussex PO20 7QG

  26/00111/PA3Q Submitted 16 Jan 2026 0.1 miles away

  Prior Approval of Proposed Change of Use of an existing agricultural building to 1 no' dwellinghouse (Use Class C3), and for associated operational development, under Part 3, Class Q(c) of The Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) which was amended by Statutory Instrument 2024 No. 579 which came into effect on 21st May 2024.

  Awaiting decision Prior approval 12 docs
  Domestic

• Willowdene Nursery Fletchers Lane Sidlesham Chichester West Sussex PO20 7QG

  26/00111/PA3Q Submitted 16 Jan 2026 0.1 miles away

  89% historically approved · decision due ~13 Mar

  Prior Approval of Proposed Change of Use of an existing agricultural building to 1 no' dwellinghouse (Use Class C3), and for associated operational development, under Part 3, Class Q(c) of The Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended) which was amended by Statutory Instrument 2024 No. 579 which came into effect on 21st May 2024.

  Awaiting decision Prior approval 7 docs
  Domestic

• 26/01089/FUL Granted

  Dandelion Farewells Church View Billingshurst Road Wisborough Green Billingshurst West Sussex RH14 0DY

  Demolition of existing outbuilding and creation of 1 no. new outbuilding. Link extension from main existing building and new outbuilding,

  Received 14 May, published by the council 10 Aug 2026 Full applications
• 26/01438/FUL Withdrawn

  Land Adjacent To Fairyhill Old Broyle Road West Broyle Chichester West Sussex PO19 3PJ

  Construction of 6 no. dwellings and garaging, access, landscaping and associated works

  Received 1 Jul, published by the council 27 Jul 2026 Full applications
• 26/00957/FUL Granted

  Lumley House Old Farm Lane Westbourne Emsworth West Sussex PO10 8RU

  Retrospective section 73a application for ground mounted photovoltaic array.

  Received 28 Apr, published by the council 10 Aug 2026 Full applications
• SDNP/26/03456/FUL Awaiting decision

  Hatch Farm Wheatsheaf Enclosure Milland West Sussex GU30 7EL

  Retrospective and part-retrospective application for works comprising the excavation and removal of hard-surfaced gallops, associated infilling and restoration to soft landscaping; the creation of new agricultural tracks; the widening and resurfacing of existing agricultural tracks; and the temporary retention of earthworks stockpiles and a site compound in connection with these works, including their subsequent removal and the restoration of the land

  Received 4 Sep, published by the council 14 Sep 2026 Full applications
• SDNP/26/03458/FUL Awaiting decision

  Petersfield Golf Club Tankerdale Lane Liss Hampshire GU33 7QY

  Creation of short game practice facility and nine-hole par 3 course, with associated ground modelling, landscaping, parking, drainage works, and permissive footpath.

  Received 4 Sep, published by the council 14 Sep 2026 Full applications