Land East Of South Mimms Services St Albans Road South Mimms Hertfordshire Data via plota.co.uk
Proposal
Application for approval of details reserved by condition 41 (revised Sustainability and Energy Statement) and 42 (Whole Life Carbon Assessment) of planning permission reference . Data via plota.co.uk
Application progress
Under consideration
No decision has been issued yet. A decision is expected by 9 Oct 2026.
Documents 3
Statements & assessments 1
Application forms 1
Associated applications 13
Site constraints 4
Checked on 6 October 2026. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) 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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Important details
Public comments
100% object · above the UK average of 74%
Last counted 8 Oct 2026
Consultation & key dates
- Alt. reference
- PP-15160556
- Planning Portal ref
- PP-15160556
- Consultation
- 24 Aug 2026
- Comments by
- 14 Sept 2026
- Statutory expiry
- 9 Oct 2026
- Env. assessment
- No
Hertsmere is slower than most councils at deciding householder applications, ranking #243 out of 296. 55% of applications have the time limit extended, above the 41% national average. Householder applications are slightly more likely to be approved here (94%) than the national average (90%).
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Land East Of South Mimms Services St Albans Road South Mimms Hertfordshire
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Referenced application
Council archive
Land East Of South Mimms Services St Albans Road South Mimms Hertfordshire
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…
- Received
- 9 Sep 2024
- Decided
- 11 Feb 2025
- Outcome
- Approved

The consultation period closed on 14 Sept 2026.