Integrated project delivery (IPD)
Integrated project delivery (IPD) is a project delivery model built around a collaborative alliance of stakeholders who each share risk and reward. It involves the key project stakeholders (the client, architect, contractor, and so on) entering into a single contract that encourages collaboration, optimises results, reduces waste and maximises efficiency and expertise.
The stakeholders collectively determine project goals, budgets, allocation of risk and compensation. The contract typically specifies the separate responsibilities of the stakeholders but enshrines collective responsibility for the project’s successful delivery.
The IPD contract agreement is typically signed by a ‘leadership team’ comprising the client, lead designer/architect and contractor. They are primarily responsible for delivering the project to the budget, schedule and quality specified by the client. Subcontractors and other stakeholders may agree to become ‘risk/reward partners’ (or they can be contracted on conventional sub-contract agreements).
Risk/reward partners agree to be reimbursed on a cost plus overhead and profit basis if the project performs well. The profit is fixed as a lump sum amount at the point at which the contract amount is negotiated and agreed by the stakeholders. The risk/reward partners may lose some or all of their profit if the project falls behind the budget or schedule, and the contract will lay out the terms of this loss. It is usual for the client to agree to pay for the project at cost if all profit is lost, thereby allowing stakeholders to limit their losses purely to the profit they would otherwise have earned on the project.
The benefit of the IPD method is that the contract removes barriers to collaboration and innovation, combining incentives for the project team as a whole rather than having them seek increased profits from the project individually. Instead of individual successes or failures, the overall outcomes determine the collective rewards.
By openly sharing the project goals, risk and rewards, this can result in a more dependable flow of information between the main parties, leading to a sharing of knowledge and technology. In addition, the project can benefit from being able to adopt lean construction principles, overlapping design and construction phases, and so on.
[edit] Related articles on Designing Buildings
- Collaborative practices.
- Consortium.
- Construction contract.
- Construction manager at-risk.
- Construction management contract.
- Construction project.
- Design and build.
- Integrated project insurance (IPI) model
- Integrated project team.
- Integrated supply team.
- Just-in-time manufacturing.
- Joint venture.
- Kanban.
- Lean construction.
- Managing the procurement process.
- Partnership.
- Procurement route.
- Tender process.
Featured articles and news
Plumbing and heating for sustainability in new properties
Technical Engineer runs through changes in regulations, innovations in materials, and product systems.
Awareness of the Carbon Border Adjustment Mechanism
What CBAM is and what to do about it.
The new towns and strategic environmental assessments
12 locations of the New Towns Taskforce reduced to 7 within the new towns draft programme and open consultation.
Buildings that changed the future of architecture. Book review.
The Sustainability Pathfinder© Handbook
Built environment agency launches free Pathfinder© tool to help businesses progress sustainability strategies.
Government outcome to the late payment consultation, ECA reacts.
IHBC 2025 Gus Astley Student Award winners
Work on the role of hewing in UK historic conservation a win for Jack Parker of Oxford Brookes University.
Future Homes Building Standards and plug-in solar
Parts F and L amendments, the availability of solar panels and industry responses.
How later living housing can help solve the housing crisis
Unlocking homes, unlocking lives.
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.
The changed R&D tax landscape for Architects
Specialist gives a recap on tax changes for Research and Development, via the ACA newsletter.
Structured product data as a competitive advantage
NBS explain why accessible product data that works across digital systems is key.
Welsh retrofit workforce assessment
Welsh Government report confirms Wales faces major electrical skills shortage, warns ECA.
A now architectural practice looks back at its concept project for a sustainable oceanic settlement 25 years on.
Copyright and Artificial Intelligence
Government report and back track on copyright opt out for AI training but no clear preferred alternative as yet.
Embedding AI tools into architectural education
Beyond the render: LMU share how student led research is shaping the future of visualisation workflows.
Why document control still fails UK construction projects
A Chartered Quantity Surveyor explains what needs to change and how.
Inspiration for a new 2026 wave of Irish construction professionals.
New planning reforms and Warm Homes Bill
Take centre stage at UK Construction Week London.

























