Tonya Lagrasta is the Global Head of Sustainability at Colliers, where she leads the firm’s strategy, reporting, and integration across global operations. With over 20 years of experience in commercial real estate, property management, consulting, and retail, Tonya is known for driving measurable sustainability outcomes and long-term value for clients and stakeholders.
Previously, she served as Canadian Head of ESG and National Practice Leader, Sustainability Services at Colliers in Canada, where she built and scaled a national platform that helps clients reduce emissions, lower energy costs, and enhance asset resilience. She also led Colliers Canada’s corporate Sustainability, Inclusion, and Social Impact strategy as chair of the ESG Executive Steering Committee.
Tonya brings deep cross-sectoral experience and has served in leadership roles on numerous boards and advisory councils. She continues to shape Colliers’ sustainability narrative globally by aligning strategy with regulatory expectations, investor interests, and commercial opportunities.
In the spirit of respect, reciprocity, and truth, we acknowledge that we live, work, and gather on the traditional territories of the peoples of Treaty 7, including the Blackfoot Confederacy—comprising the Siksika, Kainai, and Piikani Nations—as well as the Îyâxe Nakoda and Tsuut’ina Nations.
This land, known as Moh’kinsstis in the Blackfoot language and encompassing what is now Districts 5 and 6, is also home to the Métis Nation of Alberta, Region 3, within the historical Northwest Métis homeland.
We recognize and honour the deep connection these Nations have to the land, and we are grateful for the opportunity to share in its stewardship.
As we continue our work, we commit to learning from Indigenous knowledge systems, uplifting Indigenous voices, and fostering relationships rooted in equity, understanding, and reconciliation.
