Expert Witness

The purpose of providing expert witness and consulting services is to provide an objective research and
testimony for litigation cases involving tree related issues. These services may arise for tree appraisals,
sidewalk or pavement damage, causes of tree failure, comparing work procedures to industry standards,
and incidence or cause of disease or insect infestations.

The general process is as follows:

● Determine objectives of clients’ needs;
● Conduct field research;
● Conduct office research and provide objective written report; and
● Provide strategies for communication about the subject tree issues.

Who We Are

We are people who grew up around trees, saw their invaluable contributions, and have chosen to tend them with our knowledge, judgment and care.

Our Mission

To provide the most valuable information to our clients through effective problem solving that enhances the longevity of their trees.

Our Vision

To become the most effective consulting firm working with people, businesses and communities to care for and improve their tree and landscape investments.

What Our Customers Are Saying

“Denice – Much thanks for your assessment and complete, thorough report.”

A. Linares – April 2020

Thank you very much for a very professional report. I also appreciate the fact that you were so responsive and able to come out to the property and undertake the arborist report so quickly.

Glenn Rice – February 2020

Thank you so very much for your rapid response to my tree issue. Your quick guidance was very helpful and your expertise appreciated. Thank You

Evelyn – March 2019

Denice Britton

Consulting Arborist

Download CV 530.624.8403

Gordon Mann

Vice President
Consulting Arborist

Download CV 650.740.3461

Nicole Harrison

Chief Financial Officer
Consulting Arborist

Download CV 530.305.0165

Edwin E. Stirtz

Consulting Arborist

Download CV 916.801.8059

Cory Kinley


Download CV 916.955.6162