Seattle Arborist Services – Certified Arborists & Tree Service in Seattle

Tree removal costs in Washington typically range from $750 to $5,000+, depending on tree size, location, access, and regulatory requirements. In Seattle, pricing is often higher due to strict permitting rules, protected tree classifications, and right-of-way restrictions.

Factors that affect cost include:

• Tree height and trunk diameter
• Proximity to homes, utilities, or streets
• Whether a Seattle tree removal permit is required
• Steep slopes, ECAs, or limited access

We provide written, arborist-led evaluations so you understand both the cost and compliance requirements before work begins.

The cost of hiring an arborist in Seattle varies depending on the service. Basic tree consultations may be free, while professional services such as tree risk assessments, arborist reports, and consulting for permits or construction projects can range from $250 to $1,000 or more depending on complexity. ISA-Certified Arborists provide expert evaluations of tree health, safety, and structural risk.

Yes. ISA Certified Arborists trained in Tree Risk Assessment (TRAQ) can evaluate whether a tree presents a hazard. During an assessment we look for signs such as decay, root damage, structural defects, leaning, dead branches, and soil instability. If a tree presents a significant risk to people or structures, we can recommend mitigation options such as pruning, cabling, or removal.

Yes. We regularly prepare arborist reports and tree assessments for the Seattle Department of Construction and Inspections (SDCI). These reports may be required for tree removal permits, construction projects, or environmental reviews. Our reports typically include tree inventories, health assessments, risk analysis, and preservation recommendations to help property owners comply with Seattle tree regulations.

Our reports are used for:

• Tree removal permit applications
• Development and construction projects
• ECA and steep slope compliance
• Dispute resolution and city review

All reports are prepared by ISA Certified Arborists familiar with SMC 25.11.

Yes. Neighbor tree disputes are common in Seattle and throughout Washington State. Our arborists can provide independent tree assessments, documentation of tree condition, and expert opinions regarding potential hazards or property impacts. Professional arborist evaluations are often helpful in resolving disputes before they escalate into legal issues.

Our role is to provide neutral, ISA-Certified arborist evaluations that document tree health, structural risk, and site conditions — helping all parties understand what Seattle’s tree code does (and does not) allow.

If you’re dealing with a shared or disputed tree, we recommend reviewing our Boundary Trees & Neighbor Tree Law resources, which explain how Seattle regulations apply to:

• Trees growing on or near property lines
• Overhanging limbs and encroaching roots
• Shared maintenance and removal responsibilities
• When arborist documentation is required

While we don’t provide legal advice, our arborist reports are often used by homeowners, HOAs, and attorneys to resolve disputes calmly, correctly, and with defensible documentation.

👉 Learn more about Seattle boundary trees and neighbor tree disputes →

An arborist is a tree care professional trained in tree biology, pruning techniques, disease diagnosis, and risk assessment. ISA-Certified Arborists help maintain tree health, reduce safety risks, and provide expert guidance on tree preservation or removal. Common services include tree pruning, tree risk assessments, arborist reports, tree planting recommendations, and storm damage evaluations.

In many cases, yes. Seattle has strict tree protection regulations, especially for large trees and trees located in environmentally critical areas (ECAs). Whether a permit is required depends on the tree’s size, species, and property zoning. Our arborists can help determine if a permit is required and assist with the tree removal permit process through SDCI.

Tree removal in Seattle typically ranges from $1,000 to $6,000 or more, depending on tree size, accessibility, and nearby structures. Large trees close to homes, power lines, or steep slopes often require specialized climbing and rigging, which increases the complexity and cost. Each project is unique, so we recommend scheduling an onsite estimate from a certified arborist.

Most mature trees benefit from pruning every 3–5 years, while younger trees may require more frequent structural pruning to develop strong branch structure. Some species grow faster and may need maintenance every 2–3 years. Regular pruning helps improve tree health, reduce storm damage risk, and maintain safe clearance from buildings and sidewalks.

In the Seattle area, most trees are best pruned during the late winter or dormant season, when the tree’s structure is easier to see and pruning wounds heal efficiently. However, hazardous branches can be removed at any time, and certain species may require pruning at different times of the year to avoid disease or excessive sap flow.

The best way to find a qualified arborist near you is to look for professionals certified by the International Society of Arboriculture (ISA). ISA-Certified Arborists are trained in tree biology, proper pruning techniques, and tree risk assessment.

You can search the ISA Arborist Directory, ask for proof of certification, and verify that the company carries proper insurance. In the Seattle area, many homeowners also look for arborists who have experience working with Seattle tree regulations, permits, and environmentally critical areas (ECAs).

Choosing an ISA-Certified Arborist ensures your trees are evaluated and maintained using professional tree care standards and industry best practices.