NEC4 contract creates a procurement alliance arrangement for all stakeholders
![]() |
ICE’s collaborative NEC contract suite is the infrastructure procurement route of choice in the UK, Hong Kong, South Africa and New Zealand. In this article, Ian Heaphy introduces the latest member of the family, the NEC4 Alliance Contract. |
Contents |
[edit] Introduction
Following extensive industry consultation, ICE’s NEC division launched the NEC4 Alliance Contract (ALC) at the NEC Users’ Group annual seminar in London earlier this year.
The contract marks the next stage in NEC’s 25-year history of collaborative construction procurement and creates a ‘true’ alliance arrangement, where the client and all key members of the supply chain are engaged under a single set of conditions of contract.
All members of an ALC alliance have an equal voice and share in the performance of the alliance as a whole, as opposed to their own individual performance.
The contract is designed for use on major projects or programmes of work, where longer-term collaborative ways of working are to be created.
It can also be used to deliver a programme where a number of lower-value projects can be combined to create a major programme of work.
[edit] NEC approach to alliancing
All contracts in the NEC4 contract suite, which was launched in 2017, and their predecessors are collaborative in nature. They allow all key members of the supply chain to be engaged under contracts that contain the requirement at clause 10.2 for the parties to, "act in a spirit of mutual trust and co-operation".
Further collaboration can be achieved using secondary option X12 multi-party collaboration, which incentivises multiple suppliers to collaborate to achieve a common set of objectives set by the promotor (commonly the client).
ALC takes this further, building option X12 into the core of the contract.
Members of the alliance are thus required to collaborate with each other to achieve alliance objectives and individual member objectives. They work collectively to support delivery of the contract and establish an integrated alliance delivery team on a best-for-project basis.
[edit] Structure of the alliance
The client has a dual role in the ALC in that it has certain retained powers and functions that it performs outside of the alliance, as well as the power and functions of an alliance member.
An alliance board has overall responsibility for the alliance and sets strategy, appoints an alliance manager, makes decisions and resolves disputes.
Each alliance member has an alliance board representative, including the client.
The alliance manager manages the contract on behalf of the alliance and undertakes many of the functions exercised by the project manager or service manager under other NEC contracts, as well as some aspects of the contractor’s role.
Reflecting the collaborative nature of the contract, the majority of decisions of the alliance have to be made unanimously by the alliance board.
Alliance members share the majority of risk under the contract and agree that there can be no claims made against other members of the alliance except for very limited exceptions, principally due to a deliberate breach of contact.
[edit] Performance table
Payment by the client to other alliance members, which are referred to as partners, is on the basis of defined cost.
All partners are incentivised to achieve alliance objectives through a performance table, which sets out what performance is required and the reward or deduction regimes that apply if the performance targets are over- or under-achieved.
There’s already been considerable interest in the ALC from NEC users. The new contract also supports ICE’s Project 13 initiative to shift infrastructure procurement from transactions to enterprises.
This article is based on the author’s briefing article in the latest issue of the ICE Civil Engineering journal and originally appeared at: https://www.ice.org.uk/news-and-insight/the-civil-engineer/november-2018/new-nec4-contract-creates-true-alliance
--The Institution of Civil Engineers
[edit] Related articles on Designing Buildings Wiki
- ICE articles on Designing Buildings Wiki.
- ICE Conditions of Contract.
- NEC contract change management systems.
- NEC contracts and collaborative working.
- NEC4 - legal and insurance aspects.
- NEC4 Alliance contract.
- NEC4 Design, Build and Operate Contract.
- NEC4.
- Partnering.
- Procurement route.
- Project 13.
- The Institution of Civil Engineers.
Featured articles and news
Construction Skills Mission Board launch sector drive
Newly formed government and industry collaboration set strategy for recruiting an additional 100,000 construction workers a year.
New Architects Code comes into effect in September 2025
ARB Architects Code of Conduct and Practice available with ongoing consultation regarding guidance.
Welsh Skills Body (Medr) launches ambitious plan
The new skills body brings together funding and regulation of tertiary education and research for the devolved nation.
Paul Gandy FCIOB announced as next CIOB President
Former Tilbury Douglas CEO takes helm.
UK Infrastructure: A 10 Year Strategy. In brief with reactions
With the National Infrastructure and Service Transformation Authority (NISTA).
Ebenezer Howard: inventor of the garden city. Book review.
The Grenfell Tower fire, eight years on
A time to pause and reflect as Dubai tower block fire reported just before anniversary.
Airtightness Topic Guide BSRIA TG 27/2025
Explaining the basics of airtightness, what it is, why it's important, when it's required and how it's carried out.
Construction contract awards hit lowest point of 2025
Plummeting for second consecutive month, intensifying concerns for housing and infrastructure goals.
Understanding Mental Health in the Built Environment 2025
Examining the state of mental health in construction, shedding light on levels of stress, anxiety and depression.
The benefits of engaging with insulation manufacturers
When considering ground floor constructions.
Lighting Industry endorses Blueprint for Electrification
The Lighting Industry Association fully supports the ECA Blueprint as a timely, urgent call to action.
BSRIA Sentinel Clerk of Works Training Case Study
Strengthening expertise to enhance service delivery with integrated cutting-edge industry knowledge.
Impact report from the Supply Chain Sustainability School
Free sustainability skills, training and support delivered to thousands of UK companies to help cut carbon.
The Building Safety Forum at the Installershow 2025
With speakers confirmed for 24 June as part of Building Safety Week.
The UK’s largest air pollution campaign.
Future Homes Standard, now includes solar, but what else?
Will the new standard, due to in the Autumn, go far enough in terms of performance ?
BSRIA Briefing: Cleaner Air, Better tomorrow
A look back at issues relating to inside and outside air quality, discussed during the BSRIA briefing in 2023.
Restoring Abbotsford's hothouse
Bringing the writer Walter Scott's garden to life.
Reflections on the spending review with CIAT.