California Ecology Arborists

Serving Santa Barbara, Los Angeles, Ventura, San Diego, San Bernardino, and Orange Counties

+1 (626) 740-3726

About Us

Tree Experts Serving SoCal

California Ecology Arborists’ tree experts provide tree construction/protection reports, expert witness statements, tree root problem and cutting advice, tree risk assessments, view obstruction advice, CEQA bio reports, soil sampling and more. We have all the credentials needed to accomplish your mission navigating the natural environment.

Mission Statement

At California Ecology Arborists, we understand the close relationship our clients have with their landscapes. We provide a wide range of services designed to help clients nurture their properties while establishing an agriculturally sound and sustainable path forward.

Our goal remains the same: to protect the value, safety, and future of your landscape through practical, ethical, and scientifically grounded solutions.

Our Executives

Killian Vendler is the Founder of California Ecology Arborists, and brings background in arboriculture, plant science, and large-scale nursery operations to his consulting practice. Killian has experience consulting on almost any issue relating to trees and plants. Killian focuses on delivering clear, defensible solutions to complex tree and landscape issues for homeowners, developers, and legal professionals.

Killian earned a B.S. in Agriculture and Environmental Plant Science from Cal Poly San Luis Obispo, where he studied entomology and more. During his time there, he worked at the university arboretum, gaining hands-on experience in plant cultivation and production, including large-scale poinsettia and Christmas tree operations distributed throughout the state. He was also recognized academically with multiple Dean’s List honors and a scholarship in insect ecology. Furthermore, he competed as a NCAA Division 1 wrestler, receiving a full athletic scholarship.

Following graduation, Killian managed operations at Devil Mountain Wholesale Nursery, one of the largest wholesale nurseries on the West Coast. There, he played a key role in establishing a new location, overseeing pesticide compliance as a Qualified Applicator, managing inventory, logistics, and a team of over 25 employees. His work involved high-volume plant distribution and operational scaling, providing a strong foundation in both the technical and business aspects of the industry. He also learned how to speak fluent Spanish by working and living with people of all different cultural backgrounds.

He is an ISA Certified Arborist, licensed Pest Control Advisor, and Registered Consulting Arborist (RCA). Killian founded California Ecology Arborists in 2022, building the firm around a consulting-focused model that emphasizes technical accuracy, practical solutions, and clear communication. His work is driven by a commitment to helping clients navigate complex environmental, regulatory, and structural challenges involving trees, while elevating the standard of arboricultural consulting.

Jacob Goldin brings a background in business strategy, client development, and operational leadership to CalEco Arborists. With over six years of experience in consulting, private equity research, and behavioral health operations, Jacob has helped drive sustainable growth through data-driven strategy and stakeholder engagement.

Raised in Los Angeles and shaped by summers on a small island off the coast of Maine, Jacob developed a lasting appreciation for rural landscapes and natural environments. A lifelong outdoorsman, he believes the way communities care for trees, land, and open space is closely tied to long-term community health.

Jacob earned his B.A. in Philosophy from UCLA, graduating magna cum laude with a focus on logic, ethics, and critical thinking. His academic background reflects his passion for sustainability and systems thinking.

At CalEco Arborists, Jacob supports operations, outreach, and organizational strategy, helping connect expert arboricultural services with the communities and legal professionals who need them most. He is especially passionate about raising ecological awareness in urban environments and encouraging people to recognize trees not only as natural assets, but also as essential parts of resilient and sustainable communities.

Brian Chang’s journey is grounded in both academic insight and lived experience. He holds degrees in Sociology and Marketing, earning his Marketing degree from James Cook University Singapore with additional credits and a storytelling credential from the Royal Melbourne Institute of Technology.

His connection to the natural world has been equally formative. From reforesting degraded lands in Costa Rica to hands-on efforts to repopulate leatherback sea turtles, Brian’s conservation work reflects a lifelong commitment to protecting people, wildlife, and the environments we share. While living in Malaysia’s ancient jungles for 3 years and spending time in Melbourne, he gained insight that deepened his appreciation for biodiversity, natural beauty, and sustainable living.

Beyond conservation, Brian has supported community welfare initiatives in Singapore, assisting underserved populations, including the elderly and economically disadvantaged. He also has professional experience as an optician, where he cultivated precision and client care.

At CalEco Arborists, Brian applies his combined background to ensure the company’s messaging, client engagement, and community outreach reflect the values of stewardship, sustainability, and connection to the natural world.