Contact Below are all the ways you can contact us. As we said, we are here for you. Whether it be by phone, e-mail or web address, feel free to contact us anytime with your concerns. Advice and an Estimate is always free. Hamm’s Tree Service 3038 Herrington Ave. San Bernardino, Ca. 92405 U.S.A. t: 909-633-6413 t: 951-212-0024 t: 909-883-4662 web: email: