Cal State East Bay Pioneer Heights Student Housing

Major 198,100 SF addition to existing campus student housing complex. Construction included three, four-story dormitory buildings all connected by an exterior walkway. The four buildings were located to create a large courtyard with grassy common areas and hardscape for students to gather. Many carefully integrated building components were included: built-up roofing and standing seam; conventional […]

Columbia Park Manor

Construction of a 62,000 SF affordable housing complex for seniors. The two-story, wood frame and structural steel building contains 80 units. Community involvement was an important priority – Overaa met all MBE/WBE/Local project requirement goals. The project was located in a congested residential urban area with adjacent occupied buildings.

De La Salle High School Music Building and Library

Construction of a new 4,400 SF music building and the 866 SF library addition on an occupied campus. The new music building features practice rooms, instructor offices, bathrooms, interior mechanical and electrical rooms, instrument and uniform storage rooms with cabinetry, block walls, and a curved metal roof over a curved wall. Additionally, the building has […]

Stewart Elementary School

Major remodel of three wood-framed, single-story buildings on an occupied campus. Work included abatement, demolition, modernization and adding additional classroom space, remodel and addition of roofs, MEP, air-handlers and finishes. Structural concrete and steel work also provided.

Moraga Valley Presbyterian Church

This project included a new sanctuary and administration building. Overaa craftsmen constructed the sanctuary with high-end architectural concrete work, a copper roof and elegant site work. The architectural symmetry and stained glass transform this house of worship into a stunning piece of artistry.

Piedmont High School and Middle School Renovations

Primary scope of work included renovations and seismic improvements for Piedmont High School’s Quad/Library (Building A) and Student Center (Building B). Building A included protection of existing historic type finishes, demolition and abatement, seismic improvements of new hand dug 12’-20’ deep foundations, concrete/shotcrete walls to roof structure for seismic reinforcing, a new roof plywood and […]

Kaiser Oakland Garage #1

3″-6″ thick mat slab foundation for a six-level (two below grade), 531-stall parking structure that Overaa built. We placed 5,339 CY of concrete for the foundation over a 24-hour period. This required 594 deliveries – one every 1.6 minutes with 66 mixer trucks. We self-performed the foundation and placing of all vertical concrete. Adjacent occupied […]

Tesoro Refinery Central Control Building

New state-of-the-art facility that serves as the nerve center for this Martinez, CA refinery. The new building consolidates all process controls and communications into a central hub for the refinery. Construction included precast concrete walls, steel joist with metal deck, metal stud wall, extensive HVAC system, sophisticated electrical system, parking lot with site concrete and […]

Tosco Quality Assurance Laboratory

Construction included installing high purity stainless steel process piping, fume hoods, laboratory equipment, mechanical systems with HEPA filters, and an air balancing system. Scope also covered new offices, a cold room, a loading area with epoxy-coated flooring, and special trench drains. We also relocated sensitive laboratory equipment into the new facility.

Kaiser Vallejo Parking Structure

Construction of a 241,750 SF parking structure with 3,500 SF of office space on the ground floor. The four-level facility was built was in operating hospital site – extensive coordination was required to mitigate impacts of construction on the adjacent occupied facilities. We assisted the Owner in making critical design decisions based on construction costs. […]