Environmental Sustainability

American Assets Trust, Inc (“AAT”) is a dedicated steward of our community and our environment. Together with our community partners, we have developed and incorporated into our business practices innovative programs to promote environmental sustainability and social responsibility.


American Assets Trust, Inc (“AAT”) is a dedicated steward of our community and our environment. Together with our community partners, we have developed and incorporated into our business practices innovative programs to promote environmental sustainability and social responsibility.

Environmental Sustainability

Protecting the Earth’s natural resources is one of American Assets Trust, Inc. (“AAT”) priorities. In operating and developing our properties, we use proven conservation methods to reduce carbon emissions, minimize our environmental impact and preserve natural resources for future generations to come. Our goal is to implement standardized sustainability processes and policies and provide guidelines to all our stakeholders with a commitment to ongoing green forward movement.

In addition to implementing environmentally conscious programs and changes, members of our various regional teams have partnered with local utility providers and sustainability organizations and committees to introduce energy and water conservation programs, to our aligned firms in the commercial real estate community. Using the knowledge we have gained through the many years in operating and developing our properties, we’ve adopted systems and processes that are commercially viable and sustainable for years to follow. We hope that in sharing our sustainability knowledge, our communities and neighbors will adopt changes that have an overall positive impact on the environment.


Below are just some of our sustainable specific accomplishments:

  • Portfolio wide participation in the US Environmental Protection Agency’s (EPA’s) Portfolio Manager Program to track and benchmark each property’s energy, water, greenhouse gases and waste usage. AAT has partnered with Measurabl to track and monitor energy, water and waste portfolio wide.

  • AAT has invested in LED lighting retrofitting projects for interior, exterior and garage lighting, for our properties across all asset types. The high-efficiency and extended-lifespan LED lights are controlled using smart control systems that are incorporated into the Building Automation Systems and telematics controls. The motion sensor system monitors and controls lights based on external ambient light, time schedules and tenant usage.

  • Installation of electric vehicle charging stations at many of our properties with on-going commitment to add additional units.

  • Comprehensive ecofriendly landscaping design plans. The properties utilize native, adaptive and environmentally sensitive landscaping, to the extent possible; including drought-tolerant plants. Traditional overhead spray irrigation systems, with high water waste loss, are being replaced with efficient drip line and reclaimed water irrigation systems. In addition, we replenish mulch regularly to further reduce the plants fresh water needs and maintain plant life. Properties where established municipal lines collect and treat gray water will use the reclaimed water to irrigate our landscaping, resulting in a reduction of our fresh potable water needs. All these measures reduce the overall water consumption of the properties while maintaining the aesthetics of the property.

  • Installation of water efficient plumbing fixtures and energy efficient appliances and management systems.

  • E-Waste programs, including ongoing E-Cycle events and complementary large scale pick-ups, as needed, for tenants and employees that promotes “Reduce Reuse Recycle”.

  • Installation of bike parking stations throughout many of our properties.

  • Transitioning away from traditional heat absorbent, gravel built-up black roofs and replacing them with white “cool roofs”. These solar and thermal reflective roofs absorb less heat than the traditional black roofs, reducing the cooling needs of the building.


  • AAT implemented one of the largest, most comprehensive and highly successful recycling programs in San Diego for our entire Southern California portfolio that involves the participation of our tenants, merchants, customers, contractors and vendors. Our Northern California property, Del Monte Shopping Center, implemented a comprehensive glass bottles, cans and cardboard boxes recycling program. Landmark, in San Francisco, eliminated individual desk waste cans and implemented a program with centralized collection stations for recyclables, compost, landfill, e-waste, clothes, books and shoes on tenant floors.

  • Torrey Point (San Diego) earned LEED Silver Certification.

  • Torrey Reserve (San Diego):

    • Parking canopy and rooftop photovoltaic systems (solar energy collected from solar panels) generating up to 500 kWh, reducing the overall electrical consumption needs of the campus.

    • Variable Frequency Drives on all Cooling Tower HVAC systems. HVACs are controlled by an advance on-demand use control system that bolstered building optimization and reduced the necessity of cooling empty buildings.

    • Storm Water Pollution Prevention Program with advanced bio-retention systems.

    Torrey Reserve Solar Panels
    Torrey Reserve Solar Panels
  • Landmark (San Francisco):

    • The Landmark at One Market, originally built in 1916, earned the USGBC LEED Gold Certification.

    • The 5th building in San Francisco to implement the Waste-to-Energy program. The program diverts dirty HVAC filters away from the landfill and transfers them to an off-site combustion chamber facility. The used filters undergo a process that result in a residual bi-product of less than 10% of the filters original volume and water in the form of steam. The steam bi-product generates electricity which, in turn, is fed back into the grid. For every 2,000 lbs. of waste, 520 kWh of electricity is generated, powering homes and businesses in Northern California.


  • Lloyd District Portfolio (Portland):

    • Diverse recycling programs available for our tenants and residents. From recycling fluorescent tubes lights and batteries to being one of the first office buildings in Portland to provide food waste composting. Food waste is collected in special containers that are composted at an off-site location.

    • Variable Frequency Drives HVAC systems installed throughout our physical plants.

    • An Energy Retrofit was completed for Lloyd 700 which is estimated to reduce approximately 40% of the energy consumption previously used.

    • Easy access to multiple public transportation services with Transit Trackers installed in each of our lobbies to display arrival times.

    • A chiller plant replacement and upgrade is currently underway at the Lloyd Center Tower.

  • Hassalo on Eighth (Portland):

    • Hassalo on Eighth has North America’s largest bike hub (Lloyd Cycle Station) with space for 900 bicycles. Each new building has received USGBC’s highest certification of LEED Platinum for Homes. Hassalo was awarded the 2017 LEED Homes Project of the Year by the USGBC. The property was designed to be 30% more energy efficient than current codes require. The first neighborhood project in the country to get the LEED V4 for Homes Certification. Hassalo’s on-site sustainability strategies have driven the migration of new residents to live in one of the most sustainable neighborhoods in Portland.

      Bike Racks
      Bike Racks
    • Development, installation and operation of the nation’s largest and first multi-family Natural Organic Recycling Machine (or NORM) with the capability of treating 100% of the grey and black water created by Hassalo on Eighth and Lloyd 700 office building, amounting to approximately 47,000 gallons of wastewater diverted from the municipal sewer system daily. Recycled water produced by NORM is sent back to each building and used for flush water and is also used for irrigation during the growing seasons. NORM’s bi-products are recycled for further off-site use, including bio-solids as fertilizer and fats, oils and greases as fuel. NORM is designed to reduce the water usage of the four buildings by 50%, or approximately 7,300,000 gallons of water per year.

      NORM Diagram
      NORM Design
    • Development and installation of a rainwater harvesting and treatment system.

    • Implementation of a light harvesting system (natural daylighting) to reduce energy consumption.

    • Eco-Roofs, or green roofs, mitigate storm water and reduce the building’s heat absorption while softening the buildings hardscape. The storm water collected is used in the water feature that traverses through the walkway between the buildings.

    • Pedestrian and public transportation a major focus of development.

    • On-site terminals for the Portland Streetcar, TriMet’s MAX line and most major bus lines with direct routes to Portland International Airport and other destinations throughout Portland. Also available to our residents and tenants are bikes and vehicle share programs and designated car pool or high-efficiency vehicle parking. The campus is situated at the main city access for bicycles commuting from North and East Portland.

  • First & Main (Portland) earned LEED Platinum Certification, the highest LEED certification rating, with additional plans to obtain LEED Dynamic Plaque certification. LEED Dynamic Plaque is granted for building performance.


  • City Center Bellevue (Bellevue):

    • LEED Gold-EBOM Certified.

    • Implemented a construction waste diversion program. Construction waste resulting from tenant improvement projects must be recycled or diverted, to the extent possible, away from the landfill.

    • Installed rain water collection tanks for exterior landscaping.


  • Embassy Suites at Waikiki Beach Walk (Honolulu) – Variable Frequency Drives installed on all HVAC system motor, pump and fans.

We are proud of our accomplishments and will continue our environmental commitment to develop and maintain sustainable properties.