Data Centre Preconstruction Services UK
Optimar Precon supports UK main contractors and MEP specialists with data centre preconstruction services: NRM1 cost plans, NRM2 bills of quantities, MEP takeoff and BIM coordination to the UK BIM Framework.
Coordinated from our Chertsey office in Surrey, close to the Slough and West London data centre cluster, with production teams working to UK measurement rules and British Standards.
Send Your UK Tender Package
Share the RIBA stage, trades, tender return date and contract form. We will reply with scope, fee and programme.
Group-wide figures across all Optimar Precon services.
UK Data Centre Clusters We Support
Most UK capacity sits west of London, but new grid-led sites are pushing activity north and into Scotland.
Slough and West London
The UK’s densest data centre cluster, with constrained power, tight urban sites and multi-storey designs.
London Docklands
Established carrier-neutral campuses, often refurbished or extended within live operational estates.
M4 Corridor and Thames Valley
Large greenfield and brownfield campuses from Reading towards Swindon and Newport.
North West and Midlands
Growing colocation and enterprise sites around Manchester and Birmingham.
North East and Cumbria
Grid-rich regions targeted by AI Growth Zone policy and large-scale AI campuses.
Scotland
Renewable-rich sites with cooler climate benefits, also covered by AI Growth Zone support.
UK Policy Changes That Affect Data Centre Scope
Government policy on AI Growth Zones is reshaping where UK data centres are built and what contractors price.
Grid Capacity Reservation
Government plans mechanisms to reserve and reallocate grid capacity, and data centre projects in AI Growth Zones qualify for the Connections Accelerator Service.
Developer-Led HV Works
Build-and-transfer and build-and-operate models for developers’ own high-voltage lines and substations are being explored with Ofgem, adding substation packages to the tender.
Energy Price Support
Discounts of up to £24/MWh in Scotland, £16/MWh in Cumbria and £14/MWh in the North East are proposed for a 500 MW site from April 2027, subject to legislation.
Planning Reform
A National Policy Statement for Data Centres and planning changes are under consultation, with a dedicated national planning team for AI data centres.
What this means for your tender: HV substations, grid connection works and phased energisation are becoming contractor scope on UK campuses, so we price them as separate packages with their own programme assumptions.
UK Cost Plans and BoQs, Stage by Stage
Deliverables follow the RIBA Plan of Work and the RICS New Rules of Measurement, in GBP and metric units.
| RIBA stage | Cost deliverable | BIM deliverable |
|---|---|---|
| Stage 2 Concept | NRM1 order-of-cost estimate, cost per MW benchmarks | Massing and plant space models |
| Stage 3 Spatial Coordination | NRM1 elemental cost plan, redundancy option costs | Coordinated discipline models |
| Stage 4 Technical Design | NRM2 bills of quantities, MEP trade packages | Detailed MEP models and clash detection |
| Stage 5 Manufacturing and Construction | Change control pricing, valuations support | Fabrication and prefab models, as-builts |
Contract Forms
Pricing structured for JCT Design and Build and NEC4 contracts, with activity schedules where required.
Electrical and Facility Standards
MEP scope priced to BS 7671 wiring regulations, with BS EN 50600 facility classes where specified.
Sustainability Scope
Part L compliance, BREEAM targets and heat recovery options carried as identifiable cost items.
Preconstruction Services for UK Data Centres
Cost Planning
NRM1 cost plans that track design changes from concept to tender.
Bills of Quantities
NRM2 BoQs for main contract and MEP subcontract tenders.
MEP Takeoff
Electrical, mechanical and fire protection quantities by hall and phase.
BIM Coordination
Revit models and Navisworks clash detection to ISO 19650 information requirements.
CDM-Aware Planning
Sequencing and buildability input that supports CDM 2015 duties.
Dedicated Teams
Full-time estimators or BIM coordinators working UK hours for your team.
UK data centre services: data centre estimating UK and data centre BIM modelling UK. Service details: construction estimating, quantity takeoff, BIM services, shop drawings, dedicated professionals.
Tender Return Coming Up?
Send the drawings, specification and return date, and we will confirm scope, fee and programme for your UK tender.
UK Data Centre Projects Shaping Tender Demand
Recent UK schemes range from gigawatt-scale campuses in the North East to dense multi-building colocation sites around Slough.
Multi-Building Hyperscale Campus
Northumberland, North East England- Scale
- Up to ten 72 MW data centre buildings on a 100-hectare site
- Status
- Planning application filed
- Notable features
- Waterless free-cooling chillers and an on-site substation
Preconstruction takeaway: large northern campuses bring substation and HV packages into the tender, alongside repeated building packages that suit a consistent estimating team.
Multi-Phase Colocation Campus
Slough, Berkshire- Scale
- 100 MW campus; third building of 40 MW
- Status (February 2025)
- Groundbreaking on the third building, targeted for 2026
- Notable features
- Rooftop solar planned
Preconstruction takeaway: phased urban campuses need building-by-building NRM2 packages and pricing that reflects tight sites and live neighbouring operations.
Anonymized examples of publicly reported UK projects, shown for market context. These are not Optimar Precon projects, and figures may have changed since the dates shown.
UK Data Centre Preconstruction: FAQs
Do you prepare data centre BoQs to NRM2?
Yes. Bills of quantities for UK data centre tenders are measured to RICS NRM2, and cost plans are structured to NRM1 at each RIBA stage. We can also follow a client’s own cost codes or SMM7-based formats where a legacy template is required.
Which UK data centre locations do you support?
We support projects across Slough and West London, London Docklands, the M4 corridor, the North West, the Midlands, the North East, Cumbria and Scotland, coordinated from our office in Chertsey, Surrey.
How do AI Growth Zones affect data centre tenders?
AI Growth Zones bring grid capacity reservation, access to the Connections Accelerator Service and proposed energy price discounts. For contractors, this often adds developer-led substations, HV connections and phased energisation to the tender scope.
Is your BIM delivery aligned with the UK BIM Framework?
Yes. Optimar Precon is certified to ISO 19650 for BIM information management, so models and information exchanges follow your EIR and BIM execution plan in line with the UK BIM Framework.
Can you price to JCT or NEC4 contracts?
Yes. Pricing can be structured for JCT Design and Build or NEC4 contracts, including activity schedules and separate pricing for provisional sums and client-supplied equipment.
How is project data protected?
NDAs are signed before documents are shared, and access is limited to named team members. Optimar Precon is certified to ISO/IEC 27001 and ISO/IEC 27701, which supports clients with UK GDPR obligations.
Price Your Next UK Data Centre Tender
Cost plans, BoQs and BIM coordination to UK standards, coordinated from Surrey.