Why a Lender Cares Which Delivery Method Is Used
The delivery method a sponsor chooses determines who actually holds the risk of a cost overrun, a design error, or a schedule slip -- which directly affects how a construction lender sizes contingency, whether it requires a completion guaranty, and how draw inspections are scoped. Three methods dominate commercial construction, and each allocates risk differently enough that a lender's underwriting checklist should look different depending on which one a deal uses.
Design-Bid-Build: Sequential, Price-Competitive, Design-Risk-Concentrated
Design-bid-build is the traditional model: the owner hires an architect to complete a full set of construction drawings, then solicits competitive bids from general contractors against those completed drawings, awarding a largely fixed-price contract to the winning bidder. Because the contractor prices a complete design rather than an evolving one, change-order risk concentrates wherever the drawings are incomplete, ambiguous, or conflict with actual site conditions -- gaps the contractor did not price into its bid and will seek additional compensation to resolve. This method typically produces the most price-competitive bid (multiple contractors bidding the same complete design) but the longest overall timeline (design must fully finish before construction bidding, let alone construction itself, can begin), and it gives the owner the least cost certainty once ambiguities in the drawings surface during construction.
Design-Build: Single Point of Responsibility
Design-build consolidates design and construction under a single contract with one responsible entity (or a joint design-build team), which the owner engages relatively early, often before design is complete. Because the same party controls both the drawings and the construction pricing, there is far less room for the finger-pointing between architect and contractor that design-bid-build can produce when something goes wrong, and the overlapping design-and-construction schedule can meaningfully compress overall project time. The tradeoff is that the owner gives up some direct control over design decisions and the competitive, apples-to-apples price discovery that a multi-bidder design-bid-build process provides.
CM-at-Risk: Early Involvement, Then a Guaranteed Maximum Price
Construction-manager-at-risk (CM-at-risk) brings a construction manager onto the team during design -- advising on cost, constructability, and schedule while drawings are still being developed -- and then has that same CM commit to a guaranteed maximum price (GMP) once design reaches a sufficient level of completion. Below the GMP, the CM absorbs cost overruns; savings below the GMP are often shared with the owner under a pre-negotiated formula. This method blends some of design-build's early cost input and reduced adversarial risk with more owner control over design than a pure design-build handoff, which is why it has become a common default for larger, more complex commercial projects -- but the GMP is itself a negotiated cap tied to a specific, dated scope of drawings, and later owner-directed changes to that scope are priced and negotiated separately, not silently absorbed by the CM.
Comparing the Three Delivery Methods
| Delivery Method | Who Holds Cost-Overrun Risk | Design Control | Typical Timeline |
|---|---|---|---|
| Design-Bid-Build | Owner, for gaps/ambiguities in the completed drawings the contractor priced against | Owner/architect retain full control before bidding | Longest -- design must finish before bidding and construction begin |
| Design-Build | Single design-build entity, across both design and construction | Owner cedes some direct design control to the design-build entity | Shortest -- design and construction can overlap |
| CM-at-Risk | CM, for costs above the negotiated GMP | Owner retains more control than design-build, informed by CM's early cost input | Moderate -- some overlap between late design and early construction mobilization |
AIA A101 and A201: The Forms Underneath the Deal
Whichever delivery method is used, the actual contract is very often built on American Institute of Architects (AIA) standard forms -- or benchmarked against them even when a project uses a different form. A101 is the standard owner-contractor agreement itself: the specific business terms of this deal -- the contract sum, contract time, and the parties. A201, the general conditions, is incorporated into A101 by reference and does most of the substantive work: insurance and indemnification requirements, payment application and retainage mechanics, the process for substantial completion and final payment, how change orders are priced and approved, termination for cause or convenience, and the dispute-resolution process (commonly mediation followed by arbitration or litigation, depending on the parties' election). A credit underwriter or loan closer reviewing a construction loan package benefits from at least conceptual familiarity with what A201 contains, because it is what a nonstandard, owner-unfavorable deviation would actually be deviating from.
What a Lender Typically Wants to See Regardless of Delivery Method
- A clearly identified GMP or fixed contract sum, not an open-ended cost-plus arrangement with no cap
- Retainage withheld from each draw (commonly 5-10%) until substantial completion, to keep the contractor financially motivated to finish
- A performance and payment bond from the general contractor or CM, particularly on larger projects
- A defined change-order process requiring lender consent above a stated dollar threshold
- Adequate contingency held outside the GMP itself, not assumed to be embedded invisibly within it
A GMP Is Only as Good as the Drawings It's Based On
A guaranteed maximum price caps the CM's exposure relative to a specific, dated set of drawings and specifications -- it does not protect against cost increases the owner itself introduces through later design changes, nor does it eliminate contingency risk entirely if the GMP was negotiated against an incomplete design package. Confirming what stage of design the GMP was actually priced against is as important as confirming the GMP number itself.
Module Check
Under a CM-at-risk delivery method, who is contractually on the hook for a cost overrun above the guaranteed maximum price (GMP)?