Arborist Reports in Marin, Sonoma, and Napa Counties 

Urban Forestry Associates, Inc. prepares arborist reports for property owners, attorneys, developers, and public agencies. These reports are often required for tree removal permits, development applications, or to evaluate the condition and significance of trees.

An arborist report documents tree species, size, structure, and condition, and evaluates factors such as health, structural integrity, and potential risk. Reports may also address tree preservation, the potential impacts of proposed construction, and compliance with local ordinances.

Our reports are based on field observations and current arboricultural standards, and are written to meet the requirements of local jurisdictions.

when arborist reports are needed

Clients typically request arborist reports in situations such as tree removal permit applications, development and construction planning, evaluation of declining trees, or when questions arise regarding tree risk or responsibility. If a report is not required, a site consultation may be appropriate.

Because we do not prune or remove trees, our recommendations are independent. Our work is grounded in a deep understanding of tree biology and ecology, and we focus on providing clear, defensible conclusions.

Selected examples

Tree Removal Due to Structural Conflicts

Three mature coast redwood trees (Sequoia sempervirens) were assessed in relation to ongoing damage to a building and adjacent hardscape. The trees were located immediately next to the structure, with trunks and roots in direct contact with the building and walkway. Root-related lifting and structural movement were evident, and the trees had grown into the building envelope. Pruning and root barriers were not feasible without causing further damage or compromising stability. Although the trees were in good health, the conflict with the structure could not be reasonably mitigated, and removal was determined to be appropriate.

Managing Tree Health and Infrastructure Conflict in a Developed Landscape

A mature tree was assessed in relation to damage to adjacent hardscape, including lifting of concrete surfaces. Options for retaining the tree were evaluated, including the use of root barriers, but installation at that stage would have required cutting structural roots and could have compromised stability. Recommendations focused on either modifying the surrounding hardscape to accommodate root growth or removing and replacing the tree if maintaining the infrastructure was the priority. Where retention was preferred, guidance was provided to adjust hardscape elements while preserving the tree.

We provide arborist reports throughout Marin County, Sonoma County, Napa County, and surrounding Bay Area communities.

If you need an arborist report, contact us to discuss your project.