Our Model

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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, and more.  Registered Consulting Arborists (RCAs), Pest Control Advisors (PCAs) and ISA Certified Arborists with over ten years of experience with arboriculture, agriculture, and landscape. We work with passion.  Located in Los Angeles, serving LA, Orange, Ventura, and San Bernadino Counties.  Cities such as Pasadena, Beverly Hills, San Marino, & Calabasas.  We even recently helped with the massive LA Wildfire recovery efforts.

I grew up visiting our Hungarian family vineyard in the summertimes. My family also had a pumpkin patch and Christmas tree business. I loved the Christmas trees and have sold them every season for the past twenty years.  In my tumultuous teenage years, I became deeply involved in plant science because I found peace within plants and flowers.  

I earned my B.S. in Agriculture and Environmental Plant Science at Cal Poly SLO, where I wrestled Division 1. I earned a full athletic scholarship and the 2018 Coaches Award for being an exceptional student-athlete.  Also while in college, I worked three years at the campus arboretum cultivating holiday poinsettias in the fall and selling them, along with Christmas trees, of course, at various venues throughout the state.  Furthermore, I owned over thirty beehives and sold my honey at the local, famous San Luis Obispo farmers markets.  I earned a small academic scholarship for insect ecology and earned three dean’s list honors and a president’s list honor.  I even tried to start a recycling company named Mack’s Recycling.

After college, I managed operations at Devil Mountain Wholesale Nursery, a multiple location, large-scale nursery business spread throughout the west coast with one of the largest plant inventories on the market.  I played a key role in establishing their new location in Morgan Hill from 2018 until mid-2020. I was their qualified applicator and responsible person for all pesticide related activities (which were mostly conducted on weekends).  During the weekdays, I drove box trucks, sold plants, managed a crew of over 25 people, oversaw will-call, took inventories, and built critical nursery infrastructure.  

During the pandemic, I used my time to earn professional certifications and pursue my passion as a certified arborist and pest control advisor. Today, I bring technical expertise, education, and hands-on field experience to every case.  I founded California Ecology Arborists between 2022 and 2024, starting small and working my way up to higher level tree consulting. I earned my Registered Consulting Arborist certification in 2025. I earned my Registered Consulting Arborist credential in 2025, further solidifying that my professional qualifications match the depth of my hands-on experience and technical expertise in aboriculture.

We write high-level consulting arborist reports at California Ecology Arborists as well as provide expert pest control advice about insects, vermin, pesticides, plant growth regulators, fungus, bacteria, viral infections, and weeds.  We aim to help clients navigate landscape loss, tree disputes, wildfire recovery, pest issues, construction planning, landscape design, tree risk mitigation, and more.  We make trees, pests, and plants easy.

 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. This foundation in social understanding, strategy, and narrative skill allows him to craft content and outreach strategies that connect communities, ideas, and audiences in meaningful ways.

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. He lived for three years immersed in Malaysia’s ancient jungles and spent time in Melbourne, experiences 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. He believes that effective communication is not just about sharing information—it’s about building understanding, trust, and lasting relationships.