AI Data Centre

Hertsmere/26/1187/REM

Hertsmere/26/1187/REM is a reserved matters data-centre planning application in Hertsmere at Land East Of South Mimms Services St Albans Road South Mimms Hertfordshire, received 2026-08-17; status Undecided.

Local planning authorityHertsmere
AddressLand East Of South Mimms Services St Albans Road South Mimms Hertfordshire
DescriptionApplication for the approval of reserved matters relating to site-wide advanced infrastructure and enabling works (Phase 1a), including a permanent vehicular access off Swanland Road which will facilitate a temporary access during construction, a permanent emergency vehicle access off Bridgefoot Lane, pedestrian and cycle routes, internal roads, car and cycle parking, hard and soft landscaping, on-site water attenuation, temporary and permanent campus bridges, utilities and services, a security gatehouse, substations, ancillary buildings and service yards, the creation of development platforms to support the phased data centre development, and all associated infrastructure pursuant to outline planning permission reference 24/1152/OUTEI.
Type / sizeOutline · Large
StageReserved matters
StatusUndecided
Received2026-08-17
Decided
Declared capacity
Floorspace
AI / hyperscale flagno
SourcePlanIt record
Full record — 12 months of history (from August 2025), status-change events since tracking began, and facts extracted from the planning documents (MW, floorspace, applicant, cooling, grid connection — each with a verbatim quote and the source PDF) are on the Pro plan. See plans.

Data as of 2026-09-04. JSON: API · More in Hertsmere