Since completing our first LEED-certified project over a decade ago, Webcor’s delivered 160+ LEED-certified structures ranging from higher education (UC Merced 2020 Expansion) to residential (Four Seasons Private Residences) to aviation (Harvey Milk Terminal 1 at SFO).

The majority have met the stringent requirements of LEED Gold and Platinum, levels reserved for the healthiest, most efficient, and most cost-effective green buildings.

Over the last year, four of our projects have earned LEED certification: 300 Kansas (Gold), Contra Costa County Admin Building & Redevelopment (Platinum), Genesis Marina (Gold), and Verde (Gold).

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300 Kansas (San Francisco)

Sustainability was at the forefront of 300 Kansas’s design and construction. Early on, Spear Street Capital (owner/client) set the ambitious goal of delivering San Francisco’s first all-electric, zero-carbon, International Living Future Institute (ILFI)-certified core & shell building in partnership with the design team and construction teams.

The production, distribution, and repair (PDR) building was designed to offset associated greenhouse gas emissions (carbon emissions) through electrification, energy efficiency, and low-carbon material procurement, making it “Zero Carbon Ready.”

Although the team initially only targeted LEED Gold equivalence, they eventually pursued full certification with an emphasis on embodied and operational carbon reductions. Overall, it was a smooth process, especially since LEED Gold’s elements were incorporated in the building’s design prior to Webcor coming onto the project

Key Sustainability Features

• All-electric design
• High-performance envelope and mechanical design (energy efficient)
• Embodied carbon reduction, largely due to Webcor Concrete’s low-carbon concrete mix
• 100 percent renewable energy
• Energy performance verification
• Occupiable green roof to reduce heat island effect
• Increased ventilation through a dedicated outdoor air system, providing 30 percent more fresh air than required by the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE)
• Naturally lit spaces: “We strategically maximized glazing on the North façade to create access to daylight without any glare,” says Assistant Project Manager
  Marina Rosso. “A sawtooth geometry and shading screens on the East and West facades provide that important access to daylight as well.”
• Clean commute
• Water conservation
• Low-toxicity materials
• Native species for adaptive species such as bees and butterflies to pollinate

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Contra Costa County Administration Building & Redevelopment (Martinez)

Last summer, the Contra Costa County Administration Building & Redevelopment (CCC ADR) officially became the world’s first TRUE Zero Waste for construction-certified public project, dramatically raising the bar for public projects’ green building standards.

In addition to diverting at least 90 percent of construction waste to achieve TRUE certification, the team set out to earn LEED Platinum.

Key Sustainability Features

Material reuse played a major role in becoming both TRUE and LEED Platinum-certified. Before constructing the new administration building and public plaza, the CCC ADR team demolished the old county jail. They saved several materials from the jail for future reuse.

Examples of reused materials included:

• Marble, which stands out beautifully in the building’s lobbies, and the county seal, which was reused and installed in the marble wall
• Perforated wall panels in the main lobby
• Granite from the demolished jail, which was reused as paving blocks in the public plaza

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Genesis Marina (Brisbane)

Like CCC ADR, Genesis Marina is a landmark green building project. In February 2024, it became the world’s first TRUE Zero Waste for construction-certified project, ending with a remarkable 98.4 percent waste diversion rate.

Regardless of the project’s TRUE goal, however, its pursuit of LEED Gold was never in question—it was the minimum, non-negotiable LEED requirement mandated by the City of Brisbane, where the 784,000-SF biotech project is located.

Key Sustainability Features

• Reduced parking footprint
• Electric vehicle (EV)-ready
• Open outdoor space (30 percent of total site / 25 percent vegetated)
• Outdoor water use reduction
• Renewable energy systems
• Enhanced indoor air quality
• Enhanced daylight access

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Verde (San Francisco)

Mission Rock, a waterfront community in San Francisco’s Mission Bay neighborhood, is targeting LEED Gold certification throughout the entire development—from the Visa office to the Verde (formerly Mission Rock Parcel F) residential tower our team delivered last summer.

“We were happy to be part of the process and leverage our experience/knowledge of the certification process,” says Project Director Danny Cueva. “The team did a great job finding time to prioritize LEED submittals/documentation, which allowed us to complete the submission process fairly quickly after completing construction.”

Key Sustainability Features

• Reduced irrigation for landscaping to conserve water
• The overall Mission Rock development has committed to limit potable water to potable purposes only, use 100 percent renewable energy sources, and maintain highly efficient buildings.
• Mission Rock’s black water recycling system will recycle 50,000 gallons of black water (waste water from toilets) per day.

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