Choosing a project delivery method affects more than how a building is designed and constructed. It influences the schedule, budget, communication process, change order exposure, and amount of risk the owner carries.
For commercial property owners, business owners, and municipal organizations in Central Minnesota, the right choice depends on the project’s goals, funding requirements, design status, and available internal resources.
The three delivery methods most often considered are:
- Design-build: One contract covers design coordination and construction.
- Design-bid-build: The owner contracts separately with a design firm and general contractor.
- Construction management at risk: The owner retains a separate designer and construction manager, with the construction manager involved early and typically providing a guaranteed maximum price.
No single method fits every project. The best approach is the one that matches the project’s priorities and risk profile.
What is design-build?
Design-build places design coordination and construction under one team and one contract. The owner has one primary point of responsibility from early planning through completion.
The design-builder coordinates with architects and engineers, develops pricing as the design advances, reviews constructability, manages permitting, and builds the project. Design and construction can overlap, allowing early work to begin before every drawing is complete.
This does not mean the project starts without a plan. A well-managed design-build process uses early scope definition, budgeting, scheduling, and design reviews to establish a clear path forward.
The main characteristics of design-build include:
- One contract for design coordination and construction
- One primary point of responsibility
- Early contractor involvement
- Budget and constructability input during design
- Potential overlap between design and construction
- More direct coordination between designers, trades, and the owner
EVO’s Design-Build service follows this approach by coordinating with architects and engineers, managing permitting, and developing the project alongside real cost information.
What is design-bid-build?
Design-bid-build is the traditional project delivery method. The owner first hires an architect or engineering firm to complete the design. Once the drawings and specifications are finished, the project is competitively bid to general contractors.
The selected contractor then enters into a separate construction contract with the owner.
The process is generally sequential:
- The owner defines the project and hires a design firm.
- The design team completes the drawings and specifications.
- Contractors review the completed documents and submit bids.
- The owner selects a contractor.
- Construction begins after the contract is awarded.
This method gives the owner separate control over design and construction procurement. It also provides a familiar bidding process for many public agencies and organizations with formal procurement requirements.
However, the contractor’s practical input usually comes after the design is complete. If the drawings contain gaps, conflicts, or details that are difficult to build, those issues may appear as change orders during construction.
Where construction management at risk fits
Construction management at risk, or CMAR, sits between design-bid-build and design-build.
The owner hires a design firm and a construction manager under separate agreements. The construction manager joins during preconstruction and provides estimating, constructability reviews, scheduling, subcontractor input, and other planning services.
As the design develops, the construction manager may establish a guaranteed maximum price, commonly called a GMP. After the GMP is agreed upon, the construction manager generally takes responsibility for construction costs above that amount, subject to contract terms, scope changes, allowances, and other exclusions.
CMAR can provide early construction input without placing design and construction under one contract. The owner still coordinates with two primary partners, but the construction manager becomes involved earlier than under traditional design-bid-build.
Side-by-side comparison
| Consideration | Design-build | Design-bid-build | Construction management at risk |
|---|---|---|---|
| Contracts | One contract for design coordination and construction | Separate design and construction contracts | Separate design and construction management contracts |
| Schedule | Design and construction may overlap | Design, bidding, and construction occur in sequence | Some overlap is possible through early construction involvement |
| Price timing | Pricing develops as design advances; contract terms determine when price is established | Price is typically set when complete documents are competitively bid | GMP is usually established after the design reaches an agreed level of completion |
| Change orders | Integrated coordination can reduce design-related changes | More exposure if design gaps or conflicts appear during construction | Early reviews can reduce changes, but separate contracts remain |
| Design risk | Much of the design coordination and performance risk rests with the design-builder | Owner generally carries more risk related to design completeness and coordination | Design risk generally remains with the designer and owner |
| Communication | One primary point of responsibility | Owner coordinates separately with designer and contractor | Owner works with both designer and construction manager |
| Owner control | More focused on goals, scope, and decisions than day-to-day coordination | More direct control over selecting design and construction teams | Strong design involvement with early contractor input |
| Best fit | Projects needing coordination, early cost input, or schedule flexibility | Fully designed projects, formal competitive bidding, and certain public work | Projects needing early construction input while keeping design separate |
Schedule: when timing matters
Design-build can shorten the overall project schedule because design and construction activities can overlap. For example, site preparation, foundations, or procurement of long-lead materials may begin while later design details are still being completed.
The amount of time saved depends on the project, permitting process, scope, and how quickly decisions are made. Design-build does not automatically make every project faster. It creates the structure needed to avoid waiting for one complete phase to end before the next phase begins.
Design-bid-build follows a more linear sequence. Construction generally cannot begin until the design is complete, the project is bid, and a contractor is selected. That sequence can work well when the schedule is flexible and the drawings are fully developed.
CMAR may allow limited fast-tracking through early packages and preconstruction coordination. It is often faster than traditional design-bid-build but typically involves more coordination than a fully integrated design-build agreement.
Cost certainty: when is the price locked?
Cost certainty depends on when the project price is established and how complete the scope is at that point.
With design-bid-build, the owner usually receives competitive bids after the design is complete. This can provide strong price certainty at the time of contract award. That certainty depends on the drawings and specifications being complete, coordinated, and aligned with the intended scope.
If the documents contain errors or omissions, the final cost may increase through change orders.
With design-build, pricing is integrated into the design process earlier. This helps owners understand the budget impact of decisions while there is still time to adjust scope, materials, or systems. However, the price may be established before every design detail is complete, so the contract structure, allowances, contingencies, and scope definition matter.
CMAR commonly establishes a GMP after the design reaches a defined level of completion. This can provide a clear cost limit while preserving some opportunity for early construction input.
EVO’s Preconstruction service supports this process through conceptual and detailed estimating, constructability review, scope review, scheduling, and logistics planning.
Change orders and incomplete drawings
Change orders are not automatically bad. Owners may change their scope, site conditions may require adjustments, or authorities may request revisions. The concern is avoidable change caused by incomplete coordination or unclear responsibility.
Design-build gives the design and construction team a shared process for identifying issues earlier. The contractor can review constructability while the design is still developing. Designers can also respond directly to field and procurement information.
In design-bid-build, the contractor typically reviews the documents after they are complete. If a conflict appears during construction, the contractor submits a request for information or change order. The owner then has to determine whether the issue results from a design problem, a scope change, or a construction condition.
CMAR reduces some of this exposure through early contractor involvement. Still, the designer and construction manager remain separate parties, so responsibility must be clearly defined in the contracts.
Who owns the risk of design errors?
Risk allocation depends on the specific contract, but the general structure is clear.
Under design-build, the design-builder is responsible for coordinating design and construction under one agreement. This gives the owner a single party to work with when design coordination or constructability issues arise.
Under design-bid-build, the owner contracts separately with the designer and contractor. The owner generally carries more responsibility for ensuring that the design documents are complete and coordinated. If the contractor discovers a design error, the owner may need to manage the resulting discussion between the design firm and contractor.
CMAR provides construction cost and schedule responsibility after the GMP is established, but design responsibility generally remains with the architect or engineer. The construction manager helps identify problems through review but does not automatically assume all design risk.
Contract language, insurance, professional responsibilities, and local procurement rules should always be reviewed with the appropriate legal and professional advisors.
Communication and owner involvement
The number of parties involved affects how much coordination the owner must manage.
Design-build provides one primary point of contact. The design-builder coordinates architects, engineers, subcontractors, suppliers, permitting, scheduling, and construction. This structure is often useful for owners who do not have an internal construction department.
Design-bid-build requires the owner to coordinate two main relationships. The designer and contractor may communicate directly, but the owner remains between them contractually. This can provide clear separation of roles, but it may also create longer decision paths when issues arise.
CMAR offers early construction expertise while keeping the design contract separate. It can work well for owners with the resources to manage two primary partners and the need for more input than traditional bidding provides.
Which method fits different project types?
Design-build may suit:
- Small and mid-size commercial buildings
- Office, retail, healthcare, and industrial projects
- Tenant improvements with active business constraints
- Projects without fully completed drawings
- Projects with tight schedules
- Owners seeking early budget validation
- Projects where one accountable team is preferred
Design-build has become common for small and mid-size commercial construction because it reduces the number of separate relationships the owner must coordinate. It also brings pricing, constructability, and scheduling into the conversation earlier.
Design-bid-build may suit:
- Projects with fully complete drawings and specifications
- Publicly funded work requiring formal competitive bidding
- Projects where the owner wants to select the designer and contractor separately
- Straightforward projects with flexible schedules
- Organizations with strong internal project management resources
For many municipal organizations, procurement rules may determine or limit which delivery methods are available. Competitive bidding requirements, funding sources, and public contracting laws should be reviewed before selecting a method.
CMAR may suit:
- Larger or more complex commercial projects
- Projects that need early construction input
- Owners who want a GMP after design development
- Projects where design must remain under a separate contract
- Work requiring phasing, logistics, or extensive constructability review
How to choose the right delivery method
A practical decision starts with a few questions:
- Are the drawings complete?
- How important is an overlapping design and construction schedule?
- When does the owner need the price established?
- How much coordination can the owner manage directly?
- Are there public bidding or funding requirements?
- How complex are the site, systems, phasing, and operational constraints?
- Who should carry the risk of design coordination and constructability?
- Does the owner need one point of responsibility?
There is no universal answer. Design-bid-build may be the right call for a fully designed, publicly funded project with formal bidding requirements. CMAR may provide a useful middle ground for an owner seeking early construction expertise while keeping design separate.
For many private commercial projects, design-build offers a practical structure because it connects planning, budgeting, design coordination, and construction from the beginning.
EVO Construction provides Design-Build, Preconstruction, and Commercial General Contracting services for projects across Central Minnesota. Each project starts with understanding the owner’s objectives, constraints, schedule, and preferred level of involvement.
Tell us what you’re planning, and we’d like to discuss which delivery method fits the project. Contact EVO Construction.