Our Team

Stewart Wilson Realty is a trusted appraisal company with more than 30 years of industry experience. Our knowledgeable team delivers accurate, reliable valuations and personalized service you can depend on. Whether you’re buying, selling, refinancing, or seeking expert insight, we provide clear, professional support for all your appraisal needs.

Every step of the way.

Paul W. Stewart, AACI

Principal at Stewart Wilson Realty Services with over 40 years of experience in real estate valuation and advisory services. An Accredited Appraiser with the Appraisal Institute of Canada, Paul specializes in investment-grade office, retail, and industrial properties, with expertise across a wide range of asset types. He brings extensive experience in complex valuation, financial modeling, consulting assignments, and expert witness testimony in both Canada and the United States.


Guy Wilson, AACI


Principal at Stewart Wilson Realty Services with over 35 years of experience in real estate valuation and advisory services. An Accredited Appraiser with the Appraisal Institute of Canada, he specializes in the valuation of development land across the Greater Toronto Area, with extensive expertise in land residual and subdivision analysis. Guy has led valuation and consulting assignments for financing, acquisition, expropriation, litigation, and municipal purposes, and is a highly experienced expert witness before the Ontario Land Tribunal, working closely with legal and multidisciplinary consultant teams.

Andrea Stewart-Callegari, AACI

Principal at Stewart Wilson Realty Services with more than 30 years of experience in professional real estate appraisal. An Accredited Appraiser with the Appraisal Institute of Canada, Andrea provides valuation services across a diverse range of property types, including commercial, multi-residential, high-end residential, and agricultural properties, with a strong focus on accuracy and client service.

Reach out today—our experts are ready to assist you with your needs.