After gaining experience processing firewood in the late 1970s, Nathan Lewis (Founder) went to work for Davey Tree Surgery in January 1982. For the next two and a half years, he developed his skills as a climber, certified line clearance, tree trimmer, and crew leader.
In the summer of 1984, he founded Lewis Tree Service and began to build the company. In 1993 with approximately (7) employees, Nathan became a Certified Arborist. Through hard work and dedication to quality and eagerness to learn - the company began to grow. 
Today Lewis Tree Service has grown to over 35 employees, including three certified arborists, and produced five million in annual sales. In 2023, after many years of service to the greater Santa Cruz area, Nathan Lewis chose to partner with The Davey Tree Expert Company, the largest and oldest tree care company in the world, to ensure ongoing exceptional care of Lewis Tree Service clients and employees. Similar to Lewis Tree Service values, Davey has consistently demonstrated a dedication to treating clients as part of the family and nurturing landscapes with the same level of care as if they were their own.