Land East Of South Mimms Services St Albans Road South Mimms Hertfordshire

24/1152/OUTEIApproved

Outline / PiP

Approved on 12 February 2025

Council decision: Permission subject to/linked to Sect 106

Approximate location: the centre of the postcode, not the exact property.

Proposal

Outline planning permission with all matters reserved (access, appearance, landscaping, layout and scale) for phased development of Data Centre (Use Class B8) comprising of up to 187,000 sqm GEA. Development to include ancillary offices, internal and external plant and equipment (including flues) and substation (external plant excluded from maximum floorspace). Provision of car parking; servicing areas; associated services (including waste, refuse, cycle storage, lighting); laying out building, routes and open spaces within the development. Development to include all associated works and operations including but not limited to: demolition; earthworks; provision of attenuation infrastructure, engineering operations. This application is for a phased development, each phase being an independent act of development, capable of coming forward in distinct and separable phases and/or plots in a severable way. Development shall be in accordance with the approved development parameters schedule and plans.

Received: 9 September 2024
Council: Hertsmere Borough Council

ReceivedReceived9 Sep
ValidatedValidated12 Sep
Consult.Consultation18 Feb
TargetTarget Date20 Feb
DecidedDecided12 Feb

Decided in 153 days

About this application

This is a planning application for demolition at Land East Of South Mimms Services St Albans Road South Mimms Hertfordshire. Hertsmere has handled 7,138 applications of this type. This one was decided in 153 days, 14 weeks longer than Hertsmere's typical decision time. The site is in the South Mimms conservation area, with 3 listed buildings nearby. There have been 23 other applications at this address.

Application details

Planning application dates

Date validated: 12 September 2024
Consultation end: 18 February 2025
Target decision date: 20 February 2025

Additional information

Documents: 230

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations at the address point. Ones next to the site may also apply.

Conservation area: South Mimms
Green belt: Hertsmere
Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: Article 4 directions. Ask the council if these matter.

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (20)

flood storage areas, listed buildings, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Associated applications

Planning history at this site

7 other applications at this property, newest first.

Source: Hertsmere

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