Certified Arborist

ISA Certified Arborist Services in Woodinville & Greater Seattle

Having a certified arborist handle your tree care makes all the difference when it comes to the health, safety, and long-term value of your trees and property. At Aadams Tree Service, our ISA Certified Arborist (PN-6319A) and Certified Tree Risk Assessor brings decades of specialized training in the art and science of tree care — from planting and maintenance to diagnosis and removal.

We provide professional arborist consulting throughout Woodinville, Kirkland, Bellevue, Redmond, Bothell, Snohomish, Seattle, and the entire greater Eastside area.

What Is an ISA Certified Arborist?

An ISA (International Society of Arboriculture) Certified Arborist is a tree care professional who has achieved a verified level of knowledge through experience and by passing a comprehensive examination developed by the nation’s leading tree care experts. ISA certification is a non-governmental, voluntary credential that demonstrates commitment to ongoing education and industry best practices.

Our arborists maintain their certification through continuing education, ensuring they stay current with the latest research, techniques, and standards in arboriculture. This is especially important in the Pacific Northwest, where the unique climate and diverse native species — Douglas Fir, Western Red Cedar, Bigleaf Maple, Red Alder, Pacific Madrone, and many others — require specialized knowledge.

Our Arborist Services

Tree Health Assessments

Our certified arborist conducts thorough evaluations of your trees’ overall condition, looking for signs of disease, pest infestation, nutrient deficiencies, root problems, and structural issues. For Pacific Northwest trees, we pay particular attention to common regional threats including:

• Laminated root rot in Douglas Firs
• Swiss needle cast
• Big-leaf maple decline
• Bronze birch borer
• Armillaria root disease
• Phytophthora root rot in ornamental plantings

ISA Tree Risk Assessments

Our Certified Tree Risk Assessor uses the ISA Tree Risk Assessment Qualification (TRAQ) methodology to evaluate potential hazards. This systematic approach considers the tree’s structural condition, the likelihood of failure, and the potential consequences. Risk assessments are essential for:

• Identifying hazard trees before they fail
• Supporting insurance claims and liability protection
• Informing decisions about removal versus preservation
• Meeting municipal requirements for development projects

Tree Care Planning

After assessing your trees, our arborist develops a comprehensive care plan that may include:

• Trimming and pruning recommendations with timing and frequency
• Deep root fertilization schedules
• Disease and pest treatment protocols
• Tree preservation strategies for construction projects
• Species-appropriate planting recommendations for new trees

Tree Preservation for Construction

When construction or development threatens existing trees, our arborist creates detailed tree preservation plans that identify trees worth protecting, establish root protection zones, and specify construction practices that minimize damage. These plans are often required by local municipalities in Woodinville, Kirkland, Bellevue, and other Eastside cities.

Permitting Services

Many cities in the greater Seattle area require arborist reports before tree removal permits are issued. Our certified arborist prepares professional reports that satisfy municipal requirements, helping your project move forward without delays.

Our Process

1. On-site consultation — We visit your property to review and assess the condition of every tree in question.
2. Diagnosis and evaluation — Using industry-standard methods, we identify current issues and potential future risks.
3. Written report and recommendations — You receive a clear, actionable care plan tailored to your trees, property, and goals.
4. Implementation — Our professional tree service team carries out the recommended work, from trimming and fertilization to removal when necessary.
5. Ongoing monitoring — We recommend follow-up schedules based on species, condition, and risk factors.

Why Choose Aadams Tree Service

• ISA Certified Arborist (PN-6319A) with specialized Pacific Northwest expertise
• Certified Tree Risk Assessor using TRAQ methodology
• 40+ years of experience serving the greater Seattle area
• Full-service capability — One company for assessment, planning, and execution
• ANSI A300 standards followed for all pruning and removal work
• Fully licensed and insured with complete liability and workers’ compensation coverage
• Free consultations — No-pressure evaluations for residential and commercial properties
• Locally owned and operated — Deep knowledge of local species, soils, and climate

Residential and Commercial Arborist Services

Whether you are a homeowner concerned about a large tree near your house, a property manager responsible for dozens of trees, or a developer planning a construction project, our certified arborist provides the professional expertise you need. We serve properties throughout Woodinville, Kirkland, Bellevue, Redmond, Bothell, Seattle, and the entire Eastside.

Schedule Your Arborist Consultation

Discover why residential and commercial property owners contact us first for arborist services in the greater Seattle area.

Call us at (425) 657-5149 or request a free estimate.