Project delivery

What is IPD in construction?

IPD (integrated project delivery) is a project delivery method where the owner, architect, contractor, and key trades work as one team from early design, often under a single contract that ties everyone's profit to the project's results.

Maurice Francois Writer and editor August 14, 2026 3 min read

Two construction professionals review paper plans beside a tablet at a jobsite workbench. — Plan reviews connect field conditions, drawings, and the next decisions on a job. AI-generated illustration.

IPD stands for integrated project delivery. It is a way of organizing a building project so the owner, the lead designer, the general contractor, and often the major subcontractors plan, design, and build together, with shared goals and shared financial stakes. In the AIA's 2007 guide on the subject, IPD is described as an approach that integrates people, systems, business structures, and practices into a process that uses everyone's input to improve results, increase value to the owner, and reduce waste.

The short version: in most delivery methods each party protects its own contract. In IPD, the contracts are built so that parties win or lose together.

How IPD differs from other delivery methods

IPD compared with common delivery methods
Feature	Design-bid-build	CM at risk	IPD
When the builder joins	After design is done	During design	At or near the start
Contracts	Separate owner-architect and owner-contractor	Separate, plus a GMP	Often one multi-party agreement
How profit is set	Inside a fixed bid	Fee on top of cost, capped by GMP	Tied to shared project goals
Decision making	Owner, through the architect	Owner with CM input	Joint team, often by consensus

Compare design-bid-build, design-build, and construction management at risk for the more familiar models. Many owners borrow IPD ideas (early trade involvement, target costs, co-location) without signing a full IPD agreement. People sometimes call that "IPD-ish" or IPD-lite.

The principles and the contract

The AIA guide lists nine principles: mutual respect and trust, mutual benefit and reward, collaborative innovation and decision making, early involvement of key participants, early goal definition, intensified planning, open communication, appropriate technology, and organization and leadership. It also renames the design phases (conceptualization, criteria design, detailed design, implementation documents) because more of the decisions happen earlier.

On paper, the AIA's C191, Standard Form Multi-Party Agreement for Integrated Project Delivery, puts the owner, architect, contractor, and possibly other key participants on one contract. According to AIA's summary, the non-owner parties are paid on a cost-of-the-work basis with goal-based incentives, a Project Management Team with one representative from each party runs the job day to day, and a Project Executive Team, also one per party, handles the next level of oversight and disputes.

What it looks like on a real job

Say a hospital system wants a $40 million outpatient building. Under an IPD agreement, the owner, architect, GC, and the mechanical and electrical trades sign on during conceptualization. The team sets a target cost below the owner's budget. Each firm is reimbursed its actual costs, and its profit goes into a shared pool.

The mechanical sub suggests prefabricated corridor racks during detailed design. The architect adjusts ceiling heights, the estimator reprices, and the target drops. If the final cost comes in under target, the pool grows and the savings are split by an agreed formula. If it runs over, the pool shrinks with it. In the project alliance model the AIA guide describes, a firm that misses the target still gets its direct costs back but can lose its overhead and profit, while the owner carries the risk of a major overrun. Nobody gains by pushing a problem onto another party, which is the point.

Common mistakes and disputes

Signing an IPD contract but keeping old habits: separate meetings, guarded estimates, and change orders fought line by line.
Setting the target cost before enough design exists to support it.
Weak cost reporting. Open-book pricing only works if every party can see actual costs against target in near real time.
Bringing trades in late, which removes most of the design input IPD depends on.
Assuming insurance and bonding work as usual. Shared-risk structures can raise questions for carriers and sureties, so involve them early.

Related terms

IPD overlaps with lean construction, BIM, precon, and value engineering. For the wider picture of how owners choose a method, see project delivery. Smart Business Automator's job costing and WIP views give each party the cost-to-date and forecast numbers a shared target depends on.

Frequently asked questions

What does IPD stand for in construction?

Integrated project delivery. It is a delivery method where the owner, designer, and builder collaborate from early design, usually with shared risk and reward.

Is IPD the same as design-build?

No. In design-build, one entity holds a single contract with the owner for both design and construction. In IPD, the owner, designer, and builder stay separate firms but sign a shared agreement and share financial results.

What AIA contract is used for IPD?

The AIA publishes C191, the Standard Form Multi-Party Agreement for Integrated Project Delivery, among other IPD documents. Some owners write their own agreements or use other industry forms instead.

Is IPD used on small projects?

Less often. The setup, shared accounting, and team time make full IPD most common on large, complex buildings such as hospitals. Smaller projects often adopt pieces of it, like early trade involvement and target costing.

Sources

Written and edited by Maurice Francois

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.