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Planning application

HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

Decided Buckinghamshire PL/25/2997/CONDA Approval of detail Reserved by Condition

Decided. The decision notice on the council portal carries the outcome in full, including any conditions.

Proposal

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 )

As published by the council, reference PL/25/2997/CONDA

Application record

Reference
PL/25/2997/CONDA
Type
Approval of detail Reserved by Condition
Status
Decided
Decision
Condition Accepted
Received
19 Aug 2025
Validated
19 Aug 2025
Decided
13 Oct 2025
Ward
Grendon Underwood and The Claydons
Parish
Grendon Underwood
Decision by
Delegated Decision
Postcode
HP18 0TL

Site history

Applications at this address on the Buckinghamshire register

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/25/6622/CONDA Decided

    HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL

    Application for approval of details subject to condition 37 (surface water drainage) relating to Planning Permission 21/02851/AOP (allowed on appeal 22/00125/REF)

    Decided 22 Apr 2026 Conditions
  • 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

Timeline

Dates from the published record

  1. 19 Aug 2025

    Received by Buckinghamshire

  2. 13 Oct 2025

    Decision issued: Condition Accepted

  3. 12 Aug 2026

    Added to PlanIndex

  4. 15 Aug 2026

    Status changed to Registered

    Previously Decided.

Who's behind it

Company information only, from the register and Companies House

Agent on file, registered in Stoke-On-Trent

1 application on PlanIndex

Trade members see who it is, their full track record, and every application they have filed.

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Documents

Plans, drawings, consultee responses and the officer's report

2 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

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After the decision

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.

About condition discharge and variation applications

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.

Nearby applications

Within 500 metres

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

    PL/25/6622/CONDA Submitted 19 Dec 2025 188m away

    Application for approval of details subject to condition 37 (surface water drainage) relating to Planning Permission 21/02851/AOP (allowed on appeal 22/00125/REF)

    Decided Conditions 42 docs

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

    PL/25/3029/NMA Submitted 20 Aug 2025 195m 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/25/3123/SA Submitted 22 Aug 2025 195m 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/25/3226/CONDA Submitted 27 Aug 2025 200m 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/25/3128/CONDA Submitted 22 Aug 2025 204m 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/25/3615/NMA Submitted 10 Sep 2025 223m 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

In Buckinghamshire

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    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

    25 Aug 2026 Conditions
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    22 Sep 2025 Conditions
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    31 Jul 2026 Conditions
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    Iver Sub Station (Uxbridge Moor) Slough Road Iver Heath Buckinghamshire SL0 0ED

    Variation of condition 2 (approved plans) attached to planning permission PL/24/0449/FA (Erection of 132kV and 400kV GIS substations including six 460 MegaVolt Ampere (MVA) super grid transformers, gantries, office block, contractor compound, diesel generator, internal access roads, parking, drainage, lighting and cctv, permanent access road, bridge crossing, landscaping and biodiversity enhancement, and fencing.) to allow for alterations to plans regarding access

    30 Jul 2026 Conditions
  • PL/26/01845/CONDA Decided

    Land To The South Of St Johns Hospital Site Creslow Way Stone Buckinghamshire

    Approval of details subject to conditions 20 (remedial strategy) of planning approval ref. 23/02299/APP

    5 Mar 2026 Conditions