We’ve moved! Our new address is 2825 Eastlake Ave E Suite 300 Seattle, WA 98102.

Triangle’s Commitment Statement

We stand firmly with Black Lives Matter and all marginalized people, and those working toward racial justice, equity, and inclusion. We stand with all oppressed people who live in a world made dangerous and unjust by systemic racism.  History and lived experience matter, and because of that, we declare ourselves as not impartial and not neutral about this issue – not in our private lives and not in our work.

For the full statement, please follow this link to our Diversity and Equity Page

Triangle’s Community Engagement Statement

Community engagement at Triangle Associates is rooted in concepts of equity and justice and aligns with our commitment to diversity, equity and inclusion. Triangle’s community engagement strategic plan guides us to make connections between communities, governments and the private sector to foster individual and institutional change with the goal of providing a framework to guide the strategies and community engagement practices for Triangle’s work. Our efforts are grounded in the premise that community involvement is critical to the public decision-making process and empower communities to take active roles in the decisions that affect their lives and shape their environments. 

For the full statement, please follow this link to our Community Engagement Page

Our Services

Triangle Associates takes a two-pronged approach towards cultivating informed decisions on the use of natural resources and the impacts of the built environment. On one side of the company, we help public and private agencies provide environmental education services to ensure that future generations have the information they need to make sustainable environmental decisions. On the other, we provide neutral, third-party services to government, private and non-profit leaders to ensure inclusive participation, clear access to information, and durable decision-making for today’s natural resource, transportation, and land-use decisions. Founded in 1979, Triangle has been integral in the cultivation of stronger, more durable environmental decisions on some of the most important issues of the last 40 years.

Triangle News

Embedding Equity into the Community Engagement Cycle

A group from the Facilitation and Public Involvement team presented on Embedding Equity into the Community Engagement Cycle at the American Planning Association Washington Conference Annual Chapter meeting in Vancouver, WA. While Triangle is a neutral third party, we are not neutral on the issues of social justice and inclusion. Our community engagement practice is rooted in equity and social justice and aligns with our commitment to diversity, equity, and inclusion. Community engagement is critical [...]

Time For Change

After more than forty years at the Colman Building in Downtown Seattle, we are excited to announce our new office location in the Eastlake Center! We are thrilled to have a fresh new space with amazing views of Lake Union and lots of space for our growing staff. Triangle Associates 2825 Eastlake Ave E #300 Seattle, WA 98102 Thanks for updating your electronic address book. Look out for an office warming party invite later in [...]

Community Engagement in the Time of Coronavirus

Triangle is founded on the idea that community engagement is critical to shaping public policies and projects that are equitable and sustainable. But how can community members be engaged during the worse pandemic in a century? In the summer of 2020, Triangle developed a COVID-safe outreach strategy to help the North Counties Transportation Coalition (NCTC) create an innovative transit service for the residents of Camano Island and North Snohomish County. The NCTC drafted a survey […]

We are needed when…

Consequential government decisions on the built and natural environment require the input of parties that feel affected by the decision and/or the public, and a neutral third party helps them come together for dialogue and agreement.

Public, private or non-profit entities need a skilled educator to effectively communicate key resource conservation messages, promote positive behavior change, or create education materials to empower communities to be part of the solution.