GCI General Contractors

It’s all in the details. The quality of a space is often defined by the moments you have to get close to appreciate. From carefully matched wood grain and custom millwork to precise reveals and material transitions, we consider every detail as an opportunity for thoughtful execution. These details begin with a distinct design vision, brought to life through meticulous coordination and exceptional craftsmanship alongside our architect partners, clients, and trade partners. Our role is to understand the intent behind every element, help carry that vision forward in alignment with the project’s priorities, and translate it into the built environment with precision. And when every detail is in place? The space feels effortless, even though the work behind it is anything but.

San Francisco’s AI boom is reshaping more than technology, it’s reshaping the workplace.   GCI is underway on a new office build for a multi-billion-dollar AI firm in Downtown San Francisco, creating a space designed to support a growing team and the way they work. With sweeping views of the city and bay, private offices, glass-front meeting spaces, and plenty of room to grow, we’re excited to see this project come together!

Over the last five years, we have partnered with one of our repeat clients in the South Bay to build out both 3172 and 3174 Porter Drive. This past Thursday, we were proud to continue that relationship by celebrating the ribbon cutting of another neighboring Research Park building. 3176 Porter Drive spans 43,000 square feet, bringing together wet labs, offices, and community spaces designed to support a wide range of research programs. The two-story renovation included extensive interior demolition while preserving key portions of the building’s existing infrastructure. Labs and offices were strategically positioned along the perimeter to maximize natural light, while a new central staircase connects shared spaces at the heart of the facility, creating more opportunities for collaboration across floors. We’re proud to celebrate this milestone alongside Stanford and our partners at Perkins&Will. Remarks from Dean Lloyd Minor, Bart Sapeta, and Dr. Ruth O’Hara marked the beginning of an exciting new chapter for research at 3176 Porter Drive. GCI Team: Alex Sherman, ASP, Elan Preis, Jeff Seacrist, Jennifer Yarborough, Jesse Chen, John Austin, Lee Seacrist, Medina Kadermia, Natalie Shearing, Ryan Dedrick Perkins&Will Team: John Long, AIA LEED AP, BD C, Lise Barriere AIA, NCARB, LEED AP BD C, Mansi Maheshwari, Ming Ming Ong, Su Hong Chen, AIA, Su Jeong Lee, Virag Sarode Photographer: Bruce Damonte Trade Partners: Bayview Services Inc., Bigham Taylor Roofing, BIM Management Technology, Boyett Construction Inc., Bradley Concrete, Burke Herring, California Blind Company, Clean Cut Concrete, Inc., Cold Room Solutions, COMMERCIAL GLASS & ALUMINUM INC., Della Maggiore Tile and Stone, Eco Fire Sprinklers, Inc., Giampolini Group, Hoem & Associates, Inc., HPM Systems, Jerry Thompson, Metro Caseworks, Preston Pipelines Infrastructure, Rebarber Enterprises, Redwood Electric Group, Scaffold Solutions, Inc., SVM, Stockham Construction, Stomper Company, Walters & Wolf, West Coast Structural Steel

OTJ Architects is reimagining a former mechanical penthouse at 88 Spear Street in San Francisco through the lens of an “Office Resort,” transforming underutilized space into a premier destination for work, wellness, and community. Read more here: https://bit.ly/4ci5Nfo General Contractor: GCI General Contractors Structural: DCI Engineers Civil: BKF Engineers Architectural Lighting: Electrolight Landscape: Creo Landscape Architecture Interior Design: Adean Studios

We’re proud to recognize GCI Safety Manager Cesar Carrillo on becoming an OSHA-authorized Construction Outreach trainer.   After completing both the OSHA #510 Occupational Safety and Health Standards for the Construction Industry course and the OSHA #500 Trainer Course, Cesar is now authorized to lead OSHA 10-Hour and 30-Hour Construction Outreach Training and issue official OSHA course completion cards. This means he can provide OSHA-authorized training directly to our teams, helping make critical safety education more accessible across GCI.   This achievement reflects Cesar’s continued commitment to strengthening GCI’s safety culture through practical education, shared knowledge, and empowered teams. We’re excited to see him bring this expertise directly to our people and continue raising the standard for safety across our jobsites.

We’re proud to have partnered with Save the Redwoods League for the second time to build out their San Francisco headquarters. Working alongside TEF ARCHITECTURE AND INTERIOR DESIGN, INC, GCI completed a refresh of a 10,400-square-foot space with a thoughtful balance of reuse and new elements. Existing office walls were repurposed, while the boardroom and breakroom layouts were retained. New components included a gender neutral restroom, conference rooms, private offices, and an open office environment. For more than a century, Save the Redwoods League has been dedicated to protecting and restoring California’s redwood forests, making environmental responsibility a natural priority for the project. By incorporating low-embodied-carbon materials and maximizing the reuse of existing elements, the team created a workplace that aligns with Save the Redwoods League’s mission and values. We’re grateful for the opportunity to continue our partnership with Save the Redwoods League! GCI Team: James Buresh, Juan Cabrera, Keith Luna, Mei Tesdall, Nixon Kyle Quilao Trade Partners: Madrone Mission Glass Stockham Construction De Anza Water Conditioning, Inc. West Coast Acoustical Inc. Hoem & Associates, Inc. Jerry Thompson & Sons Painting, inc. Powell's Environmental Graphics Rebarber Enterprises Cutting Edge Drapery Pioneer Fire & Security KMC Plumbing Co. Anderson, Rowe & Buckley, Inc. CBF Electric & Data

How do you keep a busy downtown San Francisco building active while construction is underway? At 300 California, our team created a custom partition to separate the work area from a high-traffic occupied space. Then, we partnered with a local artist to transform the space with the building's branding and graphics, so that walking in becomes an experience tenants could truly enjoy. Lastly, we made sure to hang renderings showing their soon-to-be, high-end lobby and Andytown Cafe. The result? No noise, no dust, people stopping on the sidewalk to peer in, and excitement for the space they will get to enjoy in the coming months. It’s one example of how we aim to create thoughtful solutions to keep the client experience front and center. Muralist: Ondrea Vicklund

Another South Bay project successfully closed out! These jurisdictions require proactive communication, organized documentation, and close attention to detail, particularly ones involving specific confined-space protocols and bridge crane operation to transport materials deep underground.    Our team recently completed work at The Deep Lab, a specialized research environment with a unique history. The base building originally built in 1971 to house a linear accelerator, the facility sits 50 feet below grade, with 6-foot-thick concrete walls and ceilings.   Transforming a space with that much history and complexity required careful coordination, technical execution, and a strong understanding of the local permitting and closeout process.   We’re proud of the team’s work in helping move this project through closeout efficiently. GCI Team: Jeff Seacrist, Jennifer Yarborough, Jerry Pfefferkorn, John Austin, Lucas Watson, Marcus McDaniel, Medina Kadermia, Tiffany Do, Sal Caravez, Tom Frank Jensen Team: Dean Orr, AIA, IIDA, Nicole Germano CAS Team: Richard Smith, Ketki Thanawala, Brian Krall 📸: Garry Belinsky Trade Partners: Madrone, Clean Cut Concrete, Inc., Cornerstone Earth Group, Inc., West Coast ASM, GLAZIER STEEL, Metro Caseworks, Giampolini Group, Stockham Construction, Hoem & Associates, Inc., Jerry Thompson & Sons Painting, inc., Bayside Interiors Inc., E Tops, AGC Group, PALMER ELECTRIC

The final beam of roof steel supporting the three-floor addition at The Spear is officially in place! To commemorate the milestone, we brought our clients and trade partners together for a Topping Out Celebration. Amidst pizza and good company, everyone had the chance to sign the final beam before the crane operator lifted it to the roof, marking a meaningful moment in the project’s history and recognizing the many hands that made it possible! Team: Christopher Kiteas, Eric Ortega, Jenny Ha, John Rodgerson, Milton Flores, Natalie Shearing, Oscar Gutierrez, Ray Soriano, Rick Trueb, Tom Southam West Coast Structural Steel, DCI Engineers, OTJ Architects, Presidio Bay Ventures, Morrow Equipment