About ESTS

Professional Tree Care.

Eastern Sierra Tree Service is a fully insured, bonded, and licensed tree service company providing California’s Eastern Sierra and Owen’s Valley with full service tree care and removal for over 30 years. Owned and operated by Bill Ossofsky, and Rochelle Hair we offer clients competent and safe tree removal, trimming and care using efficient and respectful methods.

Each member of our staff has received training in safety regarding job site, equipment operation, tree work and emergency. We are respectful of your property as well as the wildlife, people and staff that may interact with tree work. Our highly skilled staff has extensive experience with tree removal, pruning and trimming, lot clearing, cabling and stump grinding. We specialize in urban forestry and are experts in tree assessment, hazard and large tree removal near structures.

Your property, how can you make sure you have the best?

All we do are trees so we are experts in tree care and removal. Trust the care of your trees and property to someone providing care, maintenance and removal of trees near building every day. All of our services are provided by experience and skilled crew members. We are members in good standing with International Society of Arboriculture (ISA),Tree Care Industry Association (TCIA), California Association of Tree Trimmers and Landscapers (CATTLand) as well as local Chamber of Commerce. We pride ourselves with quality work and clean up done in a safe, efficient and respectful manner. You will not find anyone in the Eastern Sierra with more technical experience in trimming and removal than our crew.

Protect your investment.

Eastern Sierra Tree Service has two ISA Certified Arborists on staff. Hiring an arborist will insure that your trees receive the best care using the most modern tree care methods. Arborculture practices have changed significantly in the last 15 years. Practices once thought of as appropriate are now known to cause harm to trees. By hiring a ISA Certified Arborist in current standing you are insuring that you are having your trees cared for by professionals using modern methods.

Eastern Sierra Tree Service is a licensed tree service with the required license from CAL FIRE to remove trees on private forested lands. Please visit our ‘Questions You Should Ask’ page for more information on licensing permits and insurance required for tree work.

Insurance Certification or Additional Insured is available on request.

ISA Certified Arborist WE-9413A Rochelle Hair
California Contractor License #814516  D49 Tree Service & B General
CDF Timber Operator License #B9680
Mammoth Lakes Business #6057
Bishop Business License #3326
Mono County Business License #2714
Contractors Bond $12,500
$1M/ $2M Commercial Liability
$1M/ $2M Comm. Auto & Equip.
Workman’s Compensation
 Contact us.
Call us to get a free estimate at your property:
Mammoth:   (760) 934-6142
Bishop:           (760) 872-1111

Comments or questions are welcome.

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