Licensed Contractor List

arborist in tree branches

Denver’s vegetation ordinance requires that anyone performing tree care services including pruning and removing be licensed as a “Tree Service Company.” There are many tree professionals that are licensed by the Office of the City Forester who can perform tree care services on your private property or in the public right-of-way. Remember that removal and planting of trees in the public right of way requires a permit. The Office of the City Forester does not charge a fee for tree planting or removal permits.

A Tree Contractor License is required to perform any tree maintenance in the City and County of Denver. Prior to entering a contractual agreement with a licensed tree service contractor, the Office of the City Forester recommends checking the contractor’s references, as well as receiving a written, detailed estimate (bid) from three to five companies.

Tree work is considered a service industry, and as such, companies charge a rate they feel their time and expertise warrants. Estimates may be free of charge and payment options or discounts may be available upon asking.

Click here to view the Licensed Contractor List

Hiring Tree Service Contractors

  • Vegetation Ordinance Chapter 57 requires that anyone performing tree care services, including pruning and removal, be licensed as a "Tree Service Company."
  • When requesting services, ask to see evidence of license from prospective companies.
  • Companies on the provided list have passed the minimum test requirements of the Office of the City Forester. 
  • Testing does not guarantee quality of work, so please choose a contractor wisely. 
  • View Licensed Tree Services
  • The Office of the City Forester does not endorse any company on the list; however, we do recommend that you receive at least three written, detailed bids and check references before you enter into any contractual agreement with a tree service contractor.
  • If you feel a licensed tree company on this list has provided low quality work or has behaved in an unethical manner, please contact our office at 720-913-0651 or forestry@denvergov.org.  
  • In some cases, licensed tree companies have additional certifications through the International Society of Arboriculture (ISA) or Tree Care Industry Association (TCIA). View ISA credentialed companies.
  • If you would like to see if a licensed tree company is also a licensed pesticide applicator, please visit the Colorado Department of Agriculture for contact information.