HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

This site has had 13 applications since 2025: 2 approved, 0 refused.

• PL/26/01955/NMA Decided

  HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  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 2 Apr 2026 Amendments
• PL/25/5758/MDLA Decided

  HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  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 31 Mar 2026 Conditions
• PL/25/4864/SA Granted

  HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

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

  Decided 17 Dec 2025 Lawful development
• PL/25/4863/NMA Decided

  HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  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 17 Dec 2025 Amendments
• PL/25/3615/NMA Decided

  HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  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 24 Sep 2025 Amendments
• PL/25/3226/CONDA Decided

  HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  Application for approval of details subject to condition 10 (construction traffic management plan) relating to Planning Permission 21/02851/AOP (allowed on appeal 22/00125/REF)

  Decided 31 Mar 2026 Conditions
• PL/25/3123/SA Granted

  HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  Certificate of lawfulness for proposed creation of temporary construction access

  Decided 10 Oct 2025 Lawful development
• PL/25/3128/CONDA Decided

  HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  Application for approval of details subject to condition 25 (Landscape Management Plan) relating to Planning Permission 21/02851/AOP (allowed on appeal 22/00125/REF)

  Decided 29 Aug 2025 Conditions
• PL/25/3029/NMA Decided

  HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  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 30 Sep 2025 Amendments
• PL/25/2997/CONDA Decided

  HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

  Approval of condition 36 (Piling Method Statement) 38 (Proposed Slab Levels Plan) of planning application 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 )

  Decided 13 Oct 2025 Conditions

1. 19 Dec 2025

   Received by Buckinghamshire

2. 22 Apr 2026

   Decision issued: Condition Accepted

3. 27 Jul 2026

   Added to PlanIndex

Buckinghamshire has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.

This application deals with conditions on an existing permission, supplying the details a condition requires or asking to vary or remove one, without reopening the permission itself. More in our guide to planning application types.

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

  PL/25/3226/CONDA Submitted 27 Aug 2025 32m away

  Application for approval of details subject to condition 10 (construction traffic management plan) relating to Planning Permission 21/02851/AOP (allowed on appeal 22/00125/REF)

  Decided Conditions 6 docs

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

  PL/25/3029/NMA Submitted 20 Aug 2025 35m 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 4 docs
  Small domestic

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

  PL/25/3615/NMA Submitted 10 Sep 2025 38m 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 4 docs
  Small domestic

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

  PL/25/3128/CONDA Submitted 22 Aug 2025 41m away

  Application for approval of details subject to condition 25 (Landscape Management Plan) relating to Planning Permission 21/02851/AOP (allowed on appeal 22/00125/REF)

  Decided Conditions 3 docs

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

  PL/25/3123/SA Submitted 22 Aug 2025 42m away

  Certificate of lawfulness for proposed creation of temporary construction access

  Granted Lawful development 8 docs

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

  PL/25/2838/MDLA Submitted 14 Aug 2025 84m 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

• PL/26/06127/VRC Awaiting decision

  Cerney Gate 7 Dukes Ride Gerrards Cross Buckinghamshire SL9 7LD

  Variation of condition 7 (approved plans) attached to planning permission PL/24/1758/FA (Part single, part two storey side and rear extension, single storey front porch, loft, front and side rooflights and rear dormer window and internal amendments) to allow for amendments to the front porch, fenestration alterations including the insertion of roof lights and the installation of air conditioning units to side elevation

  Received 25 Aug, published by the council 7 Sep 2026 Conditions
• PL/25/5679/CONDA Decided

  Hogtrough Smallholding Louches Lane Naphill Buckinghamshire HP14 4QH

  Application for approval of details subject to condition 3 (ecology), 4 (phased risk assessment), 5 (materials) and 6 (boundary, fences, cycle and bin storage) of planning approval 21/08339/FUL

  Received 21 Nov, published by the council 27 Jul 2026 Conditions
• PL/25/6473/CONDA Decided

  Liston Court High Street Marlow Buckinghamshire

  Application for approval of details subject to condition 4 (archaeolgoy) of planning approval 23/06283/VCDN

  Received 16 Dec, published by the council 10 Aug 2026 Conditions
• PL/25/3951/CONDA Decided

  Land South Of Pinewood Studios and Alderbourne Farm Pinewood Road Iver Heath Buckinghamshire SL0 0NH

  Application for approval of details subject to condition 16 (Masterplan), 19 (Biodiversity), 20 (Landscape and Ecology) and 46 (Whole LIfe Carbon Assessment) of planning approval PL/22/2657/FA

  Received 22 Sep, published by the council 10 Aug 2026 Conditions
• PL/25/5356/VRC Granted

  138-154 Maxwell Road Beaconsfield Buckinghamshire HP9 1QX

  Variation of condition 24 (Approved plans) relating to application PL/24/3583/VRC (Variation of condition 24 (approved plans) of application PL/23/4018/VRC relating to variations of the original planning permission PL/20/4432/OA (Outline planning permission for the demolition of 138-150 (even numbers) Maxwell Road, works to 152 and 154 Maxwell Road to convert party wall to external wall, and erection of 3 buildings comprising residential flats with associated access, landscaping and infrastructure) to allow for changes : Block A - increases in plots 11 and 17 ; Block B - increase in plot 20, alterations to roof and reconfiguration of bin store ; Block C - creation of an additional dwelling ; changes to parking layout.) to allow for 2 no. additional flats into block A and 1 no. flat into block B, relocation of entry gates and elevational enhancements

  Received 7 Nov, published by the council 27 Jul 2026 Conditions