- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 10 Dec 2018
NEC4 Design, Build and Operate Contract
NEC4 brings a new addition to the NEC family of contracts: NEC4 Design, Build and Operate Contract (DBO), released in 2017. It has been added to the suite of contracts in response to the increasing demand for contracts extending into the operational phase.
The demand is coming both from UK clients and from international funding agencies, such as the World Bank and the Asian Development Bank (ADB). In 2015, ADB commissioned NEC to draft a consultative DBO contract, the feedback from which has helped to shape the NEC4 version.
It also aligns with the UK government's commitment to 'soft landings', in which designers and constructors are involved with projects at least three years after construction completion to ensure a smoother handover to the operator.
The new DBO contract is not only intended for the 'traditional' DBO approach, where the client requires a new facility or asset to be designed, constructed and then operated by a contractor. It is also available for situations where a client wants to have an existing facility or asset operated by the contractor while it is being upgraded or extended.
In such situations, the timing of the design and construction phase would normally be stated by the client, but may be determined by the contractor – which will undertake the work at a point to suit the performance requirements of the overall service.
 Focus on operational needs
 Greater role for contractor
 Incentives and productivity
A key issue for the client is identifying and incentivising performance and productivity of the total asset. This may be through any or all of the traditional NEC approaches, including the reduction of payments for poor performance.
 Related articles on Designing Buildings Wiki
- Articles by ICE on Designing Buildings Wiki.
- Construction contract.
- Contract conditions.
- Design and build.
- Design build operate (DBO).
- ICE Conditions of Contract.
- NEC4 Alliance contract.
- NEC4 contract creates a procurement alliance arrangement for all stakeholders.
- NEC4 - legal and insurance aspects.
Featured articles and news
Eight forms of resource optimisation.
CIOB responds to Chancellor Sunak's announcement on jobs and the economy.
Revised guide to competition rules available.
Brick slip soffit systems and intricate brick features.
An innovative engineering approach could have had tragic consequence for NYC.
Some secrets behind how canals work.
Breaking down possible steps of pre-contract management.
ICE event includes comments from Welsh Government Minister Julie James.
How to write them and what they should include.
Designing Buildings Wiki becomes the world's first website to adopt the new knowledge standard.
Assessing the most beneficial design elements.
Exploring different types of vinyl flooring.