Hiring a Contractor: Design-Build vs. Design-Bid-Build
At some point in your commercial project, you’ll need to decide: When are you hiring your contractor? Sometimes you already have a contractor you trust. Other times, you want to explore multiple bids.
That’s where two common approaches come in:
Design-Build
Design-Bid-Build
Design-Build: One Budget, One Team
In many cases, Design-Build starts the relationship between client, architect, and contractor early on in the design process. This can be beneficial to your budget because you’re typically working within a project budget that can be adjusted more easily because:
Design decisions are made with real-time cost input
Adjustments happen early, before they become expensive
The team works together to stay aligned with your target
You may prefer this method if:
You already know a contractor you trust
Your design scope is not clear
You change your mind frequently
If you choose a Design-Build process, you can still interview multiple contractors, but they don’t provide line-by-line pricing since it is so early in the design process.
The advantage:
Flexibility.
Because your team is aligned from the beginning, changes during construction tend to be:
Easier to manage (less paperwork)
Clearer implications of any changes
Best value for the owner
Design-Bid-Build: Lowest Bid, Defined Scope
If you don’t already have a contractor or want competitive pricing, Design-Bid-Build may be the better path. This method may be preferred if the design is very clear and well-defined. To begin this process:
First, the architectural design documents are completed
Then, contractors provide competitive bids based on these drawings.
Next, the owner and architect review the bids (typically, we want 3 for competitive pricing)
Finally, the owner selects the lowest qualified bid.
This method could be best for your budget because you will receive line-item construction pricing, based on completed documents. Pricing will be clear, upfront, and will weed out inflated pricing. Meaning, you can clearly compare contractors and select the best one for your project and budget.
The tradeoff:
The bids are based on a fixed scope, and the contractor has only had 2-3 weeks to look through the documents and get acquainted with the project.
After awarding the contractor, if the owner wants to change any part of the design, a change order is required. These items are not necessarily bid out competitively and can be more expensive, and impact the schedule.
The Real Difference: Flexibility vs. Lowest Fixed Pricing
Both approaches can deliver successful projects. The difference is how your budget behaves when things change.
Design-Build → Flexible budget, collaborative adjustments
Design-Bid-Build → Fixed pricing, changes can come at a premium
And changes do happen. The question is whether your project is set up to absorb them smoothly or react to them later.
So, Which One Is Right for You?
If you want a more collaborative process → Design-Build may be the right fit.
If you want competitive bids and a clearly defined upfront cost → Design-Bid-Build may be the better path.
Neither is right nor wrong. But each sets expectations differently, especially when it comes to the budget.
Final Thought
Hiring a contractor isn’t just about who you choose. It’s about how your project is structured from the start. Because in commercial construction, it’s not just about the initial price; it’s about meeting the owner's expectations that make the project successful.
