• We are real craftsmen

    Overaa is a self-performing general contractor, consistently ranking as one of the largest construction employers in Northern California. It's the front line knowledge and experience of our craftspeople that informs every decision we make – from designing concrete form to developing a schedule that puts every project stakeholder in the position to be successful.

  • We are rock solid reliable

    Loyalty, humility and a can-do attitude are at the core of our company values. Our culture emphasizes continuous learning and improvement, community service, and long term employment. 

  • We love what we do

    From design-build to lean efficiency, we continually drive to improve project delivery and sustainability. United by a shared common goal, we deliberately seek out technically challenging projects. Creative zeal and genuine collaboration mark every step of the project delivery process - from 3-D modeling through handing over the keys to the building.

  • We are Overaa

    As a 4th generation family business we are passionately committed to our community. We are proud to have helped shape California’s infrastructure. Grateful for our long-standing relationships with our subcontractors, partners and clients, we are dedicated to providing the best value and world-class construction practices.

Building for the Future Since 1907

Overaa Construction, founded in 1907, is a fourth generation, family-owned and operated design-build general contractor.

Headquartered in the San Francisco Bay Area, Overaa conducts operations throughout Northern California. Overaa is consistently recognized as one of the top national and regional contractors, with award-winning projects found in nearly every major city in the Bay Area.

We specialize in collaborative delivery systems, from design-build to Integrated Project Delivery.  Our company culture supports continuous learning for the improvement of sustainability and predictability in the construction process.


On May 2, 2018, Overaa Construction broke ground on the much anticipated Zone 7 Water Agency's Ozonation Project at the Del Valle Water Treatment...

Our employees and their families had a great time participating in the Junior Achievement of Northern California Bowl-A-Thon last Sunday. We...

Building the Bay Area with tenacity, kindness and passion for excellence. Whether it's getting subcontractors paid on time, putting together...

Estimated to eliminate nearly 10,000 metric tons of CO2 per year for the next 25 years, this solar farm in Richmond is equivalent to removing 2,...

  • LABS
    • Design-Build
    • Berkeley, CA
    • 51,000 SF
    Lawrence Berkeley National Laboratory Advanced Light Source User Support Building
    This advanced sciences building was seamlessly integrated into the campus, featuring LEED Gold certified mechanical designs and state of the art systems. Through close collaboration with facility divisions, a sustainable, integrated systems approach that maximizes building flexibility and longevity was achieved.

  • TECH
    • Design-Build
    • Menlo Park, CA
    • 64,00 SF
    Stanford Linear Accelerator Research Building 52
    This LEED Gold certified facility supports scientists from around the world to control the multiple accelerators located on campus, hitting high energy efficiency goals with cutting edge technology.

    • Preconstruction and Construction Services
    • Moraga, CA
    • 20,000 SF
    Moraga Country Club
    A community favorite for tennis, golf and swimming, the clubhouse features men's and women's locker rooms, indoor and outdoor dining, as well as spaces for intimate gatherings and large banquets.

    • Integrated Project Delivery
    • Oakland, CA
    • 392,800 SF
    Sutter Health Alta Bates Medical Center Parking Structure
    Using a form of contract in which the architect, owner and contractor share in the risk and reward, this 1067-stall parking structure was finished on schedule and under budget.

    • Renewable Power Generation
    • Oakland, CA
    • 10 MW
    EBMUD Power Generation Station
    Produces 10 MW of renewable energy to allow the Oakland Wastewater Treatment Plant to operate off the grid for the majority of the year.

    • Design Build Operate
    • Davis and Woodland, CA
    • 30 mgd
    Davis Woodland Water Supply Project
    This project provides the Cities of Woodland and Davis 30 million gallons of water per day (mgd) by diverting 45,000 acre feet of water per year from the Sacramento River.