Before you pick a contractor, you pick a delivery method. That choice decides who designs the project, who builds it, when the contractor gets involved, and who carries the risk when something changes.
Most owners only think about it once the project is already moving. By then, the method has shaped the schedule, the budget, and how many surprises show up in the field.
Here is a plain-English breakdown of the three most common methods for industrial and commercial construction: design-bid-build, design-build, and construction manager at risk (CM at Risk).
Design-bid-build: the traditional path
The owner hires an architect or engineer to complete the design. The finished drawings go out to bid. Contractors submit prices, and the owner typically awards the job to the lowest qualified bidder.
The owner holds two separate contracts: one with the designer and one with the contractor. Each phase finishes before the next one starts.
Where it works well: Projects with a fully defined scope, public work where procurement rules require competitive bidding, and owners who want direct control over every design decision.
The tradeoff: It is usually the slowest method. The contractor sees the project only after the design is done, so constructability issues surface late. When the drawings and the field don’t match, change orders follow, and the owner sits in the middle of the designer and the builder.
Design-build: one team, one contract
The owner signs one contract with a design-build team that handles both design and construction. The builder is involved from day one, and design and construction overlap instead of running in sequence.
Where it works well: Projects with tight schedules, factory expansions, process-driven buildings like distilleries, and owners who want one point of accountability.
The tradeoff: The owner gives up some direct control over design details. That makes it important to define goals, performance requirements, and budget clearly at the start.
Construction manager at risk: early input, guaranteed price
The owner hires a designer and, separately, a construction manager early in the design phase. The construction manager provides preconstruction services like estimating, scheduling, and constructability reviews while the design develops.
Once the design is far enough along, the construction manager commits to a guaranteed maximum price (GMP). The CM then holds the trade contracts and is “at risk” for costs above that price, except for changes in scope.
Where it works well: Complex projects where the owner wants to keep a direct relationship with the designer but still wants the builder’s input early. It is common on schools, hospitals, and public facilities.
The tradeoff: It involves more coordination between three parties, and the GMP is only as solid as the design it is based on.
Side-by-side comparison
| Design-bid-build | Design-build | CM at Risk | |
|---|---|---|---|
| Owner contracts | Two: designer and contractor | One: design-build team | Two: designer and CM |
| Contractor involved | After design is complete | From the start | During design |
| Price set | At bid | Early, often as lump sum or GMP | At GMP, before construction |
| Schedule | Longest. Phases run in sequence. | Fastest. Design and construction overlap. | Faster than DBB. Some overlap. |
| Design control for owner | Highest | Lower | High |
| Who manages design-construction conflicts | Owner | Design-build team | Shared, with CM input |
| Best fit | Defined scope, public bidding | Speed, single accountability | Complex work, early cost certainty |
Design-build vs. general contractor: what’s the difference?
This question comes up often. A general contractor in a design-bid-build project builds from someone else’s finished drawings. A design-build contractor is responsible for both the design and the construction under one contract, either with in-house design staff or with an architecture and engineering partner.
Many contractors, including Doss and Horky, work both ways. The difference is not the company. It is the contract structure and when the builder joins the project.
Which method fits your project?
Some practical guidelines:
- Expanding a plant on a tight timeline? Design-build usually gets you into production fastest. See how we approach manufacturing facility construction.
- Building a distillery or process facility? The equipment and process drive the building. Design-build keeps the builder, designer, and equipment needs aligned from the start. Learn more about our distillery construction work.
- Public or municipal project? Procurement rules often require design-bid-build or define which alternatives are allowed. Check your agency’s rules early.
- Complex project where you want design control and early pricing? CM at Risk gives you both.
- Setting new equipment on engineered concrete pads? The design is often already set by the equipment engineer. A straightforward bid-build approach can work well if the contractor reviews the drawings before pricing.
Why preconstruction matters no matter which method you choose
The biggest cost savings on any project happen before construction starts. Preconstruction services bring the builder’s knowledge into the planning phase:
- Estimating and budget checks as the design develops
- Constructability reviews that catch problems on paper instead of in the field
- Logistics planning for site access, deliveries, and phasing around live operations
- Procurement of long-lead equipment and materials
- Project controls for schedule and cost tracking
Design-build and CM at Risk build this in. On a design-bid-build project, you can still bring a contractor in early for preconstruction review before the drawings go out.
How Doss and Horky approaches it
Doss and Horky has delivered industrial, commercial, and utility projects across Kentucky since 1985. We work in design-build and traditional delivery, and we start every project with the same question: what does the owner need most, speed, cost certainty, or control?
[PROJECT EXAMPLE: 2 to 3 sentences on a recent design-build project, the owner’s goal, and the outcome. Suggested: a portfolio project with a clear schedule or budget win.]
Delivery method FAQ
Is design-build more expensive? Not necessarily. Overlapping design and construction can shorten the schedule and reduce change orders, which often offsets any difference in upfront cost.
Which delivery method is fastest? Design-build is usually fastest because design and construction overlap. Design-bid-build is usually slowest.
What is a guaranteed maximum price (GMP)? A GMP is a cap on construction cost. If costs go over it, the contractor covers the difference, unless the owner changes the scope.
Is CM at Risk the same as hiring a general contractor? No. A CM at Risk joins during design and provides preconstruction input before committing to a price. A general contractor in design-bid-build joins after the design is finished.
Can I switch delivery methods mid-project? It is difficult once contracts are signed. Choose the method before hiring the designer if you can.
Talk through your next project
Not sure which delivery method fits? Our team can review your goals, schedule, and budget and help you choose the right path before design starts.
Contact Doss and Horky or call 859-236-2690.
