Where Expertise Meets Exceptional Landscape

Brendan Gallivan

Founder & CEO

Brendan Gallivan knew his calling from an early age. At just 14, he launched what would become Gallivan Corporation, turning his passion for landscaping into a thriving business—all while still in high school. Since founding the company in 1993, Brendan has dedicated his career to building a premier landscape services firm rooted in excellence and vision.

Under his leadership, Gallivan Corporation has grown into a team of award-winning, highly respected professionals known for delivering exceptional work with integrity, professionalism, and accountability at every stage of every project.

Shannon Gallivan

Vice President

Shannon is Vice President of operations at Gallivan Corporation, where she oversees the day to day business operations for over 100 employees. Shannon has a Masters and Law Degree. She attended Northeastern University in Boston on a full scholarship, where she played division 1 basketball.

Having been working side-by-side with her brother Brendan since nearly the beginning, Brendan will be the first to tell you that having Shannon overseeing the operations side of the business allows him and his team to focus on what they do best; quality landscape design and construction.

Carl Trinkle

Lead Designer

Carl has over thirty years of experience in the landscape industry. He graduated from SUNY Cobleskill and has been a member of Gallivan’s team since 2001. He is dedicated to delivering customers the best experience and result possible. He has a passion for designing welcoming outdoor spaces and enjoys meeting new customers. When not working he enjoys the outdoors, cooking and spending time with his family.

Ed Lemay

Head of Maintenance Division

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Bryan Anderson

Landscape Designer

Bryan has over 20 years of experience in the landscape industry. He has two degrees from the University of Massachusetts, An associates in Landscape Construction and a Bachelors in Landscape Architecture. He started in landscape construction while still in high school and his years of experience in the field give him a strong understanding of how things are constructed and how that transfers to the design process. When he is not working he enjoys the outdoors, watching sports and time with family.

Richard Disharoon

Landscape Designer

Having a passion for landscape and gardening from a very young age, Richard went on to attend Norfolk County Agricultural High School with a concentration in horticulture. He holds a Degree in Landscape Contracting from the Stockbridge School of Agriculture and a degree in Landscape Architecture from the University of Massachusetts. With over 10 years of professional experience in landscape design, Richard joined the Gallivan team in 2017. He's truly passionate about creating beautiful and highly functional outdoor living spaces for a wide range of clients. Outside of work, Richard enjoys cooking, hiking and traveling.

Brian Owens

Landscape Designer

Brian Owens is a seasoned professional with over 15 years of experience in project management, having worked with one of the top property management companies in the Capital District. He studied Landscape Architecture at SUNY Environmental Science and Forestry, which laid the foundation for his passion for creating functional, aesthetically pleasing outdoor spaces. At Gallivan, he enjoys engaging with clients and understanding their needs and desires regarding their outdoor environments. Outside of his professional life, Brian is an avid fan of the daily New York Times games and loves spending quality time with his family.

Margaret Garland

Enhancements & Purchasing

Margaret Garland serves as Purchasing Manager and Enhancements Sales at Gallivan Corporation. Margaret is responsible for sourcing quality materials essential for landscaping projects and offers enhancement services to both new and existing clients. She truly enjoys providing tailored solutions for clients seeking to change or expand their landscapes. 

Margaret earned her bachelor’s degree in communications from the State University of New York at Plattsburgh. With over 15 years of experience in the landscaping industry, she brings a wealth of knowledge and dedication to her position.