About Us


From a group of three with a pickup truck, chain saw, and a dream in fall 1987, Seattle Tree Preservation, Inc. has grown to a group of 16 tree care professionals, dedicated to having a positive influence on how trees are cared for in the Seattle area urban forest.  The company was founded with the goal of being the best if the not the biggest tree care company in the Seattle area. The goal was to become the standard by which all other tree care companies are measured.  STP, Inc. is currently the second largest company in our market in Washington state, with 11 ISA Certified Arborists currently on staff

STP, Inc. promotes continuing education in arboriculture among all staff members, and attempts to stay ahead of the curve as new tree care techniques and products are developed and brought to market.  This company values its staff. We emphasize worker safety, pay living wages, and provide excellent benefits. All work is done to standards developed by industry groups working with the American National Standards Institute, (ANSI).  We own and operate modern equipment to perform the work safely and efficiently.  Seattle Tree Preservation, Inc. is without doubt a cut above the competition.

Why Hire An Arborist?

If you have trees on your property:

We would like to invite you to take advantage of our unique determination to keep your trees strong, healthy and as safe as possible. Simply call or e-mail to meet with us personally when you have questions or are ready to take action.

We have 11 ISA Certified Arborists on staff!

If you have a tree problem of any kind, we are available to provide an arborist or a referral to a consultant.  Even if there is no current problem, it is often wise to have your property checked by a certified arborist.  This can educate you about your trees and prevent any future problems

ISA Consumer Information Links:

Why Hire An Arborist?

Benefits of Trees

Buying High-Quality Trees

Insect and Disease Problems

Mature Tree Care

New Tree Planting

Tree Selection

Plant Health Care

Recognizing Tree Hazards

Trees and Turf

Avoiding Tree and Utility Conflicts

Tree Values

Why Topping Hurts Trees

Pruning Young Trees

Pruning Mature Trees

Avoiding Tree Damage During Construction

Treatment of Trees Damaged by Construction