Business Details
50+ Years
experience
Trusted Construction Services in Northern California
C. Overaa & Co. is a fifth-generation family-owned construction company with over 118 years of experience serving California. We specialize in preconstruction, general contracting, and collaborative delivery methods, prioritizing self-performing critical construction work with our skilled in-house teams. Our commitment to quality, safety, and sustainability is reflected in our 100+ industry awards and $15B in California infrastructure projects.We leverage deep local expertise and a bonded capacity of $1B to deliver complex projects across education, healthcare, energy, and transportation sectors. Our team of 400+ professionals, including 230+ self-perform craftspeople, ensures tight control over project timelines, costs, and quality while maintaining a strong focus on community impact and environmental stewardship.
Services
Preconstruction Services
General Contracting
Collaborative Delivery
Self-Perform Construction
Sustainable Building
Details
- Year established: 1907
Highlights and features
- 118 years of continuous operation in the construction industry
- Self-performing builder with 230+ skilled in-house craftspeople
- Award-winning expertise in collaborative delivery methods
- Committed to sustainable construction and carbon reduction strategies
- Deep local knowledge with Northern California operations since 1907
Services
Preconstruction Services
Our preconstruction services deliver quality, schedule, and cost certainty through collaborative stakeholder alignment. We analyze design objectives and cost-effective solutions while leveraging our self-perform expertise to identify constructability solutions. Our comprehensive approach includes estimating, design review, bid packaging, and procurement planning to maximize project value.
Self-Perform Construction
As one of the few large commercial contractors with self-perform capabilities, we execute critical work with our own skilled teams. This includes concrete work, site development, wood framing, and seismic retrofitting. Our hands-on approach provides tighter control over project variables and ensures implementation of efficient building solutions.
Collaborative Delivery
We specialize in progressive design-build, lease-leaseback, and public-private partnership models. With 500+ collaborative projects totaling $1.5B, our approach emphasizes unified vision and teamwork. Our bonding capacity of $1B and experienced staff ensure successful execution of complex projects through various collaborative methods.
Sustainable Building
Our sustainability focus includes low-carbon concrete solutions, mass timber construction, and material waste reduction strategies. We implement environmental management systems aligned with LEED and SWPPP standards. Our projects feature energy-efficient designs, water conservation systems, and circular material usage approaches.
General Contracting
We provide comprehensive general contracting services across multiple sectors including education, healthcare, and transportation. Our expertise covers project management, subcontractor coordination, and quality control. With a focus on safety and efficiency, we deliver complex projects on time and within budget.
People
Danny Aitken
General Superintendent, Self Perform Group
With over 40 years of experience since joining Overaa in 1984, Danny leads our Self Perform Group. He specializes in solving complex construction challenges and oversees concrete experts who handle site work, elevated decks, and specialized formwork solutions.
Kara Overaa Gragg
Vice President, Communications
A fourth-generation family member, Kara has led Overaa's marketing and work acquisition since 1994. She developed our Continuous Improvement Training Program and specializes in alternative project delivery methods while maintaining active community involvement.
Questions
What construction services do you offer?
We provide preconstruction services, general contracting, and collaborative delivery methods including design-build and public-private partnerships across multiple sectors.
How long have you been in business?
We've been operating continuously since 1907 as a fifth-generation family-owned construction company.
Do you specialize in sustainable construction?
Yes, we implement low-carbon concrete, mass timber solutions, and waste reduction strategies across our projects to support environmental sustainability.
What geographic areas do you serve?
We primarily serve Northern California with offices in Richmond and San Jose, operating throughout the Bay Area and surrounding regions.
What makes you different from other contractors?
We're a rare self-performing builder with 230+ in-house craftspeople, providing direct control over quality, safety, and project timelines.
