HM Prison Grendon Springhill Road Grendon Underwood Buckinghamshire HP18 0TL Data via plota.co.uk

Decided PL/25/4863/NMA
Admin / procedural
Council
Buckinghamshire 1.3/10
Date received
around 23 Oct 2025
Date validated
23 Oct 2025
Postcode
HP18 0TL

Description

Non material amendment to planning permission (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 Data via plota.co.uk

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Last checked

Site constraints 4

1 listed building within 150 m
Nearest: Grendon Hall, Grade II, 8 m away
The site itself is not listed. Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Historic England ↗
Habitat network: Network Expansion Zone
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Inside the Edgcott built-up area; Natural England's Provisional ALC map (1:250,000, 1970s) had this area as grade 3, but it predates the buildings here and the current map does not class it as farmland.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 7 October 2026. Historic England, the Environment Agency, Natural England and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

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Other new applications on this street

2 Sept 2026Pending

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

Approval of details subject to condition 2 (materials) of approval ref. 25/02292...

PL/26/07050/CONDA
3 Jul 2026Approved

50 Springhill Road Grendon Underwood Buckinghamshire HP18 0TE

Proposed non-material amendment to planning permission PL/26/02414/FA (Part sing...

PL/26/05387/NMA

Nearby new applications

2 Sept 2026Pending

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

Approval of details subject to condition 2 (materials) of approval ref. 25/02292...

PL/26/07050/CONDA

Historical activity at this location

10 previous applications on record - archival context, not part of the live application.

This property

Previous applications at this address

2025
Application for approval of details subject to condition 37 (surface water drainage) rela…
PL/25/6622/CONDA
2025 Approved
Certificate of Lawfulness for proposed creation of temporary haul road for construction
PL/25/4864/SA
2025
Application under Section 106 of the Town & Country Planning Act 1990 (as amended) to dis…
PL/25/5758/MDLA
2025 Approved
Approval of condition 36 (Piling Method Statement) 38 (Proposed Slab Levels Plan) of plan…
PL/25/2997/CONDA
2025 Approved
Certificate of lawfulness for proposed creation of temporary construction access
PL/25/3123/SA
2025 Approved
Proposed non-material amendment to permission for Outline Planning Application with all m…
PL/25/3029/NMA
2025 Approved
Proposed non-material amendment to permission for Outline Planning Application with all m…
PL/25/3615/NMA
2025 Approved
Application for approval of details subject to condition 25 (Landscape Management Plan) r…
PL/25/3128/CONDA
2025
Application for approval of details subject to condition 10 (construction traffic managem…
PL/25/3226/CONDA
2025
Application to amend section 106 agreement to trigger for submission and approval of trav…
PL/25/2838/MDLA
Buckinghamshire
Planning Authority Score
1.3/10
Poor
#284 of 296 councils
Relevant to this application:
Householder decisions

Buckinghamshire is one of the slowest councils in England for householder decisions, ranking #280 out of 296. 55% of applications have the time limit extended, above the 41% national average. Householder applications are slightly less likely to be approved here (86%) than the national average (90%).

Among the slowest councils in England
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Buckinghamshire decision statistics
Based on MHCLG data, the year to March 2026
84%
Overall approval rate
Below avg (87%) #217 of 296
86%
Householder approved
Below avg (90%) #241 of 296
34%
Decided in 8 weeks
Below avg (63%) #280 of 296
55%
Extended time limit
Above avg (41%) #248 of 296
76%
Minor dwellings approved
491 decided (1-9 homes)
82%
Major dwellings approved
71 decided (10+ homes)
82%
Change of use approved
131 decided
4,446
Total decisions
690 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings