Land Adjacent To HMP Grendon Springhill Springhill Road Grendon Underwood HP18 0TL

1. 2 Sep 2026

   Received by Buckinghamshire

2. 10 Sep 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 28 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Buckinghamshire took a median of 58 days over the applications it decided in the last year.

This application is with Buckinghamshire for determination, against a statutory target of eight weeks. Over the last year Buckinghamshire's median decision took 58 days. More in our guide to how long planning decisions take.

The published feed does not state which type of application this is; the register entry on Buckinghamshire's portal will say. Our guide explains the common types.

• HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  PL/25/5758/MDLA Submitted 20 Nov 2025 110m away

  Application under Section 106 of the Town & Country Planning Act 1990 (as amended) to discharge planning obligation at First Schedule, Part 2, (Highway Works Delivery Programme) of the Section 106 Agreement for application 21/02851/AOP

  Decided Conditions 3 docs

• HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  PL/25/4864/SA Submitted 23 Oct 2025 114m away

  Certificate of Lawfulness for proposed creation of temporary haul road for construction

  Granted Lawful development 8 docs

• HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  PL/26/01955/NMA Submitted 10 Mar 2026 143m away

  Proposed non-material amendment to planning permission 21/02851/AOP (allowed on appeal 22/00125/REF) (Outline Planning Application with all matters reserved except for access, layout and scale for the construction of a new Category C prison (up to 67,000 sqm GEA) within a secure perimeter fence together with access, parking, landscaping and associated engineering works) to allow for amendment to wording of Condition 26.

  Decided Amendments 5 docs
  Small domestic

• Hm Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  21/B2851//NON Submitted 15 Jul 2025 143m away

  Proposed non-material amendment to permission for Outline Planning Application with all matters reserved except for access, layout and scale for the construction of a new Category C prison (up to 67,000 sqm GEA) within a secure perimeter fence together with access, parking, landscaping and associated engineering works granted under planning ref: 21/02851/AOP (allowed on appeal 22/00125/REF)

  Decided Amendments 9 docs
  Small domestic

• HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  PL/25/4863/NMA Submitted 23 Oct 2025 143m away

  Non material amendment to planning permission 21/02851/AOP (Outline Planning Application with all matters reserved except for access, layout and scale for the construction of a new Category C prison (up to 67,000 sqm GEA) within a secure perimeter fence together with access, parking, landscaping and associated engineering works) to ensure the discharge rates (drainage) reflect the permeable areas of the detailed scheme

  Decided Amendments 9 docs
  Small domestic

• HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  PL/25/2838/MDLA Submitted 14 Aug 2025 152m away

  89% historically approved · decision due ~9 Oct

  Application to amend section 106 agreement to trigger for submission and approval of travel plan prior to occupation relating to 21/02851/AOP

  Awaiting decision Conditions 4 docs