Design-Build Construction in Colorado
Design-build is a project delivery method in which a single entity holds contractual responsibility for both the architectural/engineering design and the physical construction of a project. This page covers how the design-build model operates within Colorado's regulatory and licensing environment, the scenarios where it is most commonly applied, and the structural boundaries that distinguish it from other delivery methods such as design-bid-build and construction manager at risk. Understanding this framework matters for owners, contractors, and public agencies navigating Colorado's permitting, licensing, and procurement rules.
Definition and scope
Design-build consolidates design and construction services under a single contract between the owner and a design-build entity (DBE). The DBE may be a general contractor with in-house design staff, a joint venture between a contractor and a licensed engineer or architect, or a design firm that subcontracts construction. Under the traditional design-bid-build model, the owner contracts separately with a designer and then competitively bids construction to a separate firm — creating two contractual relationships and a distinct handoff point. Design-build eliminates that gap.
In Colorado, design-build is recognized under both private and public procurement frameworks. For public projects, Colorado Revised Statutes § 24-92-103 establishes the framework for alternative project delivery on state-funded construction, authorizing design-build as a permissible method when justified by specific project criteria (Colorado General Assembly, C.R.S. § 24-92-103). Municipal and county governments may adopt their own enabling ordinances consistent with state law.
Scope and coverage of this page: This page addresses design-build as applied to commercial and public construction projects subject to Colorado state law and jurisdiction. It does not address federally funded projects governed exclusively by Federal Acquisition Regulation (FAR) requirements, tribal land construction, or projects located outside Colorado's borders. Adjacent topics such as Colorado construction permits overview and Colorado building codes are treated separately and are not comprehensively repeated here.
How it works
Design-build delivery follows a structured sequence that compresses the traditional linear project timeline by overlapping design and construction phases:
- Owner defines performance criteria. Rather than producing a complete set of construction documents, the owner prepares a Request for Qualifications (RFQ) or Request for Proposals (RFP) that specifies functional requirements, budget targets, schedule milestones, and applicable codes — including Colorado's adoption of the International Building Code (IBC) as addressed in Colorado IBC adoption.
- DBE selection. Owners evaluate shortlisted firms on qualifications, preliminary design concepts, and price. Public agencies in Colorado are generally required to use a qualifications-based or best-value selection process rather than low-bid-only selection for design-build contracts.
- Bridging documents or schematic design. Some owners engage a separate bridging architect to produce schematic design documents before issuing the RFP, giving the DBE a defined starting point while preserving competitive pricing.
- Contract execution. A single lump-sum or guaranteed maximum price (GMP) contract is executed. Liability for design errors and construction defects consolidates under this single agreement, which has direct implications under Colorado construction defect law.
- Integrated design and preconstruction. The DBE's design and construction teams collaborate simultaneously, allowing constructability reviews, material procurement, and long-lead-item ordering to begin before design completion.
- Permitting and plan review. The DBE submits construction documents to the applicable local building department for permit issuance. Licensed engineers and architects of record must be registered in Colorado per the requirements of the Colorado State Board of Licensure for Architects, Professional Engineers, and Professional Land Surveyors (DORA, dora.colorado.gov).
- Construction and inspections. Work proceeds under the jurisdiction of the local building official. Inspections follow the adopted code schedule; on-site safety compliance falls under Colorado OSHA construction regulations.
- Substantial completion and closeout. The DBE delivers the project against the performance criteria. Certificate of occupancy issuance marks the end of the inspection cycle.
Common scenarios
Design-build is applied most frequently in the following project categories within Colorado:
- Colorado Department of Transportation (CDOT) highway and bridge projects. CDOT has used design-build procurement on major Front Range corridor projects. The CDOT construction projects framework includes specific prequalification requirements for DBEs under CDOT's contractor prequalification program.
- K–12 and higher education facilities. School districts and state colleges use design-build to compress delivery timelines when bond measure funding has defined expenditure deadlines.
- Municipal water and wastewater treatment plants. Process-intensive infrastructure benefits from the DBE's ability to integrate equipment selection with structural design.
- Commercial tenant improvement and ground-up office construction. Private owners seeking schedule certainty and single-point accountability on budgets exceeding $5 million frequently select design-build.
- Mountain resort and hospitality projects. High-altitude construction introduces unique scheduling constraints — condensed construction seasons, elevation-specific material performance requirements — explored further in Colorado high-altitude construction challenges.
Decision boundaries
Design-build is not universally preferable to other delivery methods. The following structural comparison identifies the key factors that drive method selection:
| Factor | Design-Build | Design-Bid-Build |
|---|---|---|
| Owner design control | Lower — owner defines outcomes, not details | Higher — owner controls every design decision |
| Schedule compression | Significant — phases overlap | Limited — sequential phases |
| Single-point accountability | Yes — one contract | No — split between designer and contractor |
| Competitive pricing on design | No — scope is defined by DBE | Yes — separate designer bids |
| Public procurement flexibility | Requires statutory authorization | Standard method in most jurisdictions |
| Change order exposure | Lower if scope is well defined | Higher if design documents are incomplete |
Projects with novel or highly specialized programs (historic preservation, for example — see Colorado historic preservation construction) often retain greater owner design control through design-bid-build. Projects involving prevailing wage requirements must comply regardless of delivery method; see Colorado prevailing wage construction for the applicable thresholds.
Licensing requirements apply identically under both delivery models. The DBE must ensure all subcontractors hold appropriate Colorado licenses as outlined under Colorado subcontractor licensing, and the design professionals of record must hold active Colorado registrations through DORA.
References
- Colorado Revised Statutes § 24-92-103 – Alternative Project Delivery (Colorado General Assembly)
- Colorado Department of Regulatory Agencies (DORA) – State Board of Licensure for Architects, Professional Engineers, and Professional Land Surveyors
- Colorado Department of Transportation (CDOT) – Contractor Prequalification
- Design-Build Institute of America (DBIA) – Project Delivery Method Overview
- International Building Code (IBC) – International Code Council
- Colorado Division of Labor Standards and Statistics – Prevailing Wage