From the green rooftops that filter storm water down to the low-toxicity recycled-content carpeting, The Mason Williams is easy on the environment. Built to LEED Gold certification standards, this innovative space helps preserve the Portland of tomorrow while serving your unique, eco-friendly lifestyle today. You can be proud to live in a place that sets an example for sustainability.

Site Sustainability

Located at the corner of Williams Avenue and Mason Street, The Mason Williams is a progressive mixed-use urban infill project. The on-site storm water management system uses infiltration swales and dry wells to handle 100% of its storm water.

You’ll also find a dedicated on-site car share parking space, electric vehicle charging stations, a high-efficiency automated parking system, and parking for more than 100 bicycles. It’s location is ideal for residents to take advantage of Portland’s bike corridors and public transit, too.

Water Efficiency

Potable water usage at The Mason Williams is expected to be reduced by 35% over a baseline case for buildings of similar size and use. Low-flow/ultra low-flow plumbing fixtures and high-efficiency irrigation systems will enable responsible water use on a regular basis.

Energy Efficiency

The Mason Williams will be one of the most energy-efficient places to call home with its estimated 31% annual energy savings over a baseline case for buildings of similar size and use. It will include 54 rooftop-mounted solar hot water panels for pre-heated and recirculating hot water. These panels are expected to generate 50% of the building’s annual residential energy needs for hot water. Also, a 24.25 kW rooftop solar PV array will generate 20% of building’s common area energy through its photovoltaic system.

Numerous energy savers at The Mason Williams will save everyone money while adding comfort. The low-flow fixtures will reduce the amount of energy required for hot water uses. Occupancy sensors in some public areas will help minimize lighting energy use. In addition, high-performance Pella fiberglass frame windows will minimize heat loss in the winter and reduce radiant heat gain in the summer.

This well-insulated building includes an air barrier and rain screen system that help create a better indoor living environment. Efficient exterior lighting minimizes light pollution. A light-colored and highly reflective roof surface will mitigate urban heat island effect and provide a cooling benefit. Energy Star® appliances are installed throughout, as well as programmable thermostats for all regularly occupied spaces.

Once completed, inspectors will verify that the entire building is designed, constructed, and calibrated to operate as intended.

Resource Efficiency

Throughout construction of the Mason Williams, an aggressive waste management plan has been followed. Specified materials with high-recycled content are being used as well as FSC-certified wood, ensuring a sustainable wood source from well-managed forests. After construction, residents will have a convenient recycling and sorting facility, too.

Indoor Environmental Quality

At the Mason Williams, you can enjoy healthier air, both inside and out. Construction crews followed specific guidelines to contain dust and prevent contamination of installed systems and materials. They installed specified low-toxicity building materials and finishes to prevent off-gassing. Operable windows allow for natural ventilation, and an air barrier and rain screen system reduces moisture related issues, thus providing a healthier living space.

503-287-0875 ⋅ 4150 N. Williams Avenue ⋅ Portland, Oregon 97217