AIA Contract Selection and Execution: A101, A133, A141, A195, Owner-Architect-Contractor Relationships, and Notice to Proceed

How to select and execute the right AIA owner-contractor agreement based on project delivery method, and the architect's role in advising the owner through contract execution and notice to proceed.

ARE · Construction & Evaluation

Overview

One of the most consequential decisions in preconstruction is selecting the correct AIA owner-contractor agreement. Get it wrong and you've created a mismatch between the delivery method, the payment structure, and the legal framework. Get it right and everyone knows their obligations from day one.

The AIA publishes a family of owner-contractor agreements keyed to delivery method. A101-2017 is the workhorse: stipulated sum for design-bid-build projects where price competition drove the selection. A133-2019 is built for construction manager as constructor projects with a guaranteed maximum price, which means the contractor entered the process earlier and GMP gets negotiated rather than bid. A141-2014 covers design-build, where the owner contracts directly with a single entity responsible for both design and construction. A195-2008 is the integrated project delivery form, used when the owner, architect, and contractor are sharing risk and reward under a single multi-party agreement.

The architect's role in contract selection matters more than candidates often assume. This isn't just a legal task for the owner's attorney. You're advising the client on which document fits their project structure, reviewing the executed agreement to confirm it aligns with the project delivery method, and helping the owner understand when to issue notice to proceed.

Notice to proceed is the formal signal that authorizes the contractor to begin work. It typically follows contract execution and confirmation that financing, permits, or other conditions precedent are satisfied. Issuing it prematurely can create liability. Delaying it without cause can trigger delay claims. The architect doesn't sign the NTP but is often the advisor who tells the owner when conditions are met.

Essential

The AIA organizes its contract documents into families. Each family is anchored by a set of general conditions, and the owner-contractor agreements within that family work in conjunction with those conditions. For CE exam purposes, you need to know which agreement applies to which delivery method and what distinguishes them. The Four Core Owner-Contractor Agreements A101-2017 (Stipulated Sum, Design-Bid-Build) This is the standard agreement when a contractor is selected through competitive bidding and the contract price is fixed at a specific lump sum. The owner knows the price upfront. The risk of cost overruns from inefficiency rests with the contractor. A201-2017 General Conditions are incorporated by reference. The architect helped assemble bidding documents, the owner received bids, selected the lowest responsible bidder, and now A101 formalizes the relationship. Key fields include the contract sum, the date of commencement, the date of substantial completion, and the schedule of values format.

Professional

Consider an architect advising a university on procurement strategy for a new science building. The university has a defined budget and a board-approved design from schematic phase. The question is which delivery method to use. If the design is nearly complete and the board wants a guaranteed price before breaking ground, design-bid-build with A101 makes sense. If the university wants the contractor involved earlier to refine cost estimates during design, CM-at-risk with A133 may serve better, especially since the campus has complex MEP requirements benefiting from contractor input. Now contrast that with a situation where the university wants to transfer maximum risk to a single entity. Design-build with A141 shifts both design liability and construction cost risk to the design-builder. The architect loses direct contractual privity with the owner. For a standard classroom building with established program requirements, that risk transfer may work well.

TLDR

A101-2017: DBB, stipulated sum, competitive bidding, fixed price, incorporates A201
A133-2019: CM as constructor, GMP negotiated, cost-of-work plus fee, used when CM joined during design
A141-2014: Design-build, owner contracts with design-builder, architect's agreement is with design-builder (B143) not owner
A195-2008: IPD, multi-party, shared risk/reward, owner-architect-contractor in one agreement
Notice to proceed: owner issues (not architect), triggers contract time, requires bonds, insurance, and permits first
Architect's role: advise on document selection, review executed agreement for accuracy, advise on NTP readiness
Trap: A101 is NOT used for CM-at-risk or design-build projects

ELI5

Think of AIA owner-contractor agreements like different types of leases. The same landlord might offer a fixed-rent lease, a cost-plus lease with a spending cap, or a turnkey deal where one company handles everything. A101 is the fixed-rent lease. You know exactly what you're paying before anyone moves in. The contractor bid a fixed price and that's what the contract says. Simple, predictable. This works great when the design is completely finished before bidding. A133 is more like a cost-plus deal with a cap. The contractor came in while the design was still being worked out, helped figure out what things would cost, and agreed to a maximum price. You pay actual costs plus their fee, but never more than the cap. This is used when the owner wants the contractor's input early, not just at the end. A141 is the all-in-one deal.

Overview

Essential

Professional

TLDR

A101-2017: DBB, stipulated sum, competitive bidding, fixed price, incorporates A201
A133-2019: CM as constructor, GMP negotiated, cost-of-work plus fee, used when CM joined during design
A141-2014: Design-build, owner contracts with design-builder, architect's agreement is with design-builder (B143) not owner
A195-2008: IPD, multi-party, shared risk/reward, owner-architect-contractor in one agreement
Notice to proceed: owner issues (not architect), triggers contract time, requires bonds, insurance, and permits first
Architect's role: advise on document selection, review executed agreement for accuracy, advise on NTP readiness
Trap: A101 is NOT used for CM-at-risk or design-build projects

ELI5

AREConstruction & Evaluation

AIA Contract Selection and Execution: A101, A133, A141, A195, Owner-Architect-Contractor Relationships, and Notice to Proceed

How to select and execute the right AIA owner-contractor agreement based on project delivery method, and the architect's role in advising the owner through contract execution and notice to proceed.

2 min read263 words

Picking the Right Contract: A101, A133, A141, and A195

Want to track your progress and access more study tools?

Create a free account