Concrete & Foundation Contractor in Denver

Every great building starts with a solid foundation, and in Denver, that means understanding Colorado's challenging soil conditions. Expansive clay soils, freeze-thaw cycles, and the semi-arid climate all put unique demands on concrete and foundation work. 303 Construction has been pouring foundations and concrete across the Denver metro for over 20 years.

We handle all types of concrete and foundation work: new home foundations (pier and beam, post-tension slabs, traditional footings), residential and commercial flatwork (driveways, sidewalks, patios, garage floors), retaining walls, foundation repairs, and structural concrete for additions and ADUs.

Driveway and patio concrete in Denver typically runs $8–$15 per square foot for standard work, with stamped or decorative concrete ranging from $12–$25 per square foot. Foundation work is priced based on engineering requirements — we provide detailed estimates after assessing your specific project and soil conditions.

Our concrete crews understand Denver's climate demands: proper mix designs for Colorado's freeze-thaw cycles, adequate cure times at altitude, expansion joint placement, and reinforcement specifications. We don't cut corners on rebar, wire mesh, or vapor barriers — because foundation failures are the most expensive problems to fix.