Emerging cost contract
![]() |
Emerging cost (Time and Materials (T&M)) contracts are most commonly used for rail infrastructure projects.
They are essentially cost reimbursable management contracts for a programme of works and services where the management contractor is paid direct costs identified in an 'estimate of project costs'. They provide for sophisticated management services along with sub-contracting the construction of the works.
However, while there may be target costs and schedules of rates for individual items of the programme of works, with associated incentives and penalties, there is no overall target cost. This means that the final value of the contract may not be known until the contract is complete. This can be useful where setting an overall target cost would restrict the client’s ability to vary the scope of works.
This means the client is accepting many of the financial risks of the project, and must have the expertise and appropriate controls to manage those risks.
Emerging cost contracts provide for value engineering and for the right to terminate if the cost estimate reaches an agreed percentage above the original estimate.
Emerging cost contracts are often applied over a defined period of time. The longer this period of time, the more consideration the contractor is likely to give to long-term performance issues in design and workmanship.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
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.
Retired firefighter cycles world to raise Grenfell funds
Leaving on 14 June 2025 Stephen will raise money for youth and schools through the Grenfell Foundation.
Key points for construction at a glance with industry reactions.
Functionality, visibility and sustainability
The simpler approach to specification.
Architects, architecture, buildings, and inspiration in film
The close ties between makers and the movies, with our long list of suggested viewing.
SELECT three-point plan for action issued to MSPs
Call for Scottish regulation, green skills and recognition of electrotechnical industry as part of a manifesto for Scottish Parliamentary elections.
UCEM becomes the University of the Built Environment
Major milestone in its 106-year history, follows recent merger with London School of Architecture (LSE).
Professional practical experience for Architects in training
The long process to transform the nature of education and professional practical experience in the Architecture profession following recent reports.
A people-first approach to retrofit
Moving away from the destructive paradigm of fabric-first.
International Electrician Day, 10 June 2025
Celebrating the role of electrical engineers from André-Marie Amperè, today and for the future.
New guide for clients launched at Houses of Parliament
'There has never been a more important time for clients to step up and ...ask the right questions'
The impact of recycled slate tiles
Innovation across the decades.
EPC changes for existing buildings
Changes and their context as the new RdSAP methodology comes into use from 15 June.