West Coast Tree by Joseph Christman - Arborist & Trimming Service Agoura Hills, Oak Park, Westlake Village provides top quality tree service for residential and commercial clients in Ventura County and Los Angeles County. As arborists with more than 20 years of experience, we offer tree trimming, tree pruning, tree removal, stump removal, stump grinding, and emergency tree services. Our team is able to work on all types of trees, including palm trees, sycamore trees, and oak trees. We are an eco-friendly company, and pride ourselves on being dependable and efficient.