- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 17 Nov 2020
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
Training reflects updated guidance in BSRIA BG 29/2021.
Complete list of 2021 winners now available.
Recognising past and present role models for the future.
So why not write something?
LETI publishes guidance for energy efficient home retrofits.
Predictions about adequate post-pandemic IAQ in non-domestic buildings.
Government publishes plans to 'build back greener'.
The contentious nature of claims associated with cladding, fire safety and EWS1 forms.
ECA comments on low-carbon heating systems initiative and Heat and Buildings Strategy.