ISA Certified Arborists | Licensed • Bonded • Insured
Professional
Tree Risk Assessment (TRAQ) services for homeowners, HOAs, and contractors across Seattle, Bellevue, and the greater Puget Sound region. Our ISA Certified Arborists evaluate tree health, structural stability, and failure potential using the
ISA Tree Risk Assessment Qualification (TRAQ) methodology.
✔ On-site inspection • ✔ Hazard rating (TRAQ) • ✔ Photo evidence • ✔ Written report & recommendations
A Tree Risk Assessment (TRAQ) is a formal evaluation of a tree’s likelihood of failure, the potential consequences, and recommended mitigation options. TRAQ assessments follow the ISA Tree Risk Assessment Qualification methodology, considered the industry standard for determining tree stability and safety.
Homeowners, HOAs, contractors, insurance companies, and city permitting departments rely on TRAQ assessments when:
TRAQ assessments are commonly used to:
Many property owners search for a tree health assessment when they are concerned about the condition of a tree on their property. While tree health evaluations focus on issues such as disease, pest activity, canopy vigor, and overall tree vitality, a Tree Risk Assessment goes one step further by evaluating the likelihood of structural failure and the potential consequences if the tree fails.
During a professional arborist inspection, both factors are typically evaluated together. Our ISA Certified Arborists assess tree health, structural stability, root conditions, soil environment, and surrounding targets to determine whether a tree is safe to retain, requires pruning or mitigation, or should be removed due to unacceptable risk.
In this way, a tree risk assessment often includes elements of a tree health assessment, providing property owners with a complete understanding of a tree’s condition and safety.
Professional arborists follow a structured methodology when assessing tree hazards. The ISA TRAQ process includes: 1. Tree Identification Species, size (DSH), and overall condition. 2. Defect Identification Decay, cavities, cracks, included bark, root plate movement. 3. Likelihood of Failure Probability the tree or branch will fail. 4. Likelihood of Impact Probability a person, structure, or infrastructure will be hit. 5. Consequences of Failure Severity of potential damage or injury. These three factors combine to produce an overall risk rating: • Low • Moderate • High • Extreme
We follow the structured ISA TRAQ methodology to ensure consistency, accuracy, and defensible outcomes.
Tree risk assessment requires specialized training beyond standard arborist certification. Our TRAQ Qualified Arborists are trained to evaluate tree structure, identify potential failure points, and assess risk to nearby structures, people, and property. We provide clear, defensible recommendations to help you understand the condition of your trees and make informed decisions about mitigation, pruning, or removal. Learn more about our full ISA Certified Arborist services across the Puget Sound.
ISA Certified Arborist PN-9290A
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TRAQ Qualified Tree Risk Assessor🔗
Eric leads advanced tree risk assessments, hazard mitigation planning, and arborist reporting for permitting and development projects. He provides defensible, code-compliant recommendations that align with Seattle and regional municipal requirements.
Supported by our field crew and arborist team for safe, efficient execution of recommended work.
Tree risk decisions require more than opinions — they require defensible, documented professional judgment. Sound Tree Care provides TRAQ-compliant Tree Risk Assessments performed by ISA Certified Arborists and Qualified Tree Risk Assessors with decades of field experience evaluating hazardous trees across Seattle and the greater Puget Sound region.
Our assessments follow ISA Tree Risk Assessment Qualification (TRAQ) methodology, the industry standard relied upon by municipalities, insurance carriers, HOAs, engineers, and permitting departments. Every evaluation considers tree structure, site conditions, targets, and load factors to determine likelihood of failure, likelihood of impact, and consequences of failure — not guesswork.
We’re trusted for clear, unbiased arborist reports that support:
All work is performed or reviewed by ISA Certified Arborists, following ANSI A300 standards, ANSI Z133 safety requirements, and applicable local tree codes throughout Seattle, Bellevue, and surrounding cities.
✔ ISA Certified Arborists & TRAQ-Qualified Assessors
✔ Defensible, written arborist reports
✔ Trusted by cities, HOAs, insurers, and homeowners
✔ Deep experience with ECAs, slopes, and regulated sites
✔ Local knowledge of Seattle & King County tree codes
👉 Request a Tree Risk Assessment or Schedule an Arborist Report Call to get a clear, professional evaluation you can rely on.
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Not all arborists are trained to evaluate tree risk. TRAQ (Tree Risk Assessment Qualification) is a specialized ISA certification requiring advanced knowledge of biomechanics, structural defects, load factors, species-specific failure profiles, and standardized documentation.
Our TRAQ Assessments Include:
This level of expertise ensures your assessment is accurate, consistent, and respected by regulators and insurance providers.
The cost of a professional Tree Risk Assessment depends on the number of trees evaluated, the level of documentation required, site access, nearby targets, municipal permitting requirements, and whether advanced inspection methods are necessary. Tree Risk Assessments are commonly performed for permit applications, insurance concerns, hazard evaluations, development projects, and trees located near homes, roads, utilities, playgrounds, parking areas, or other occupied spaces.
| Service | Typical Cost |
|---|---|
| Basic Visual Tree Risk Assessment | $250–$500+ |
| TRAQ Assessment with Documentation | $450–$1,500+ |
| Advanced Climbing or Aerial Inspection | $750–$2,500+ |
| Development or Municipal Review | $1,000–$5,000+ |
Most residential Tree Risk Assessments with professional documentation fall between $450 and $1,500, especially when the assessment is needed for a permit, insurance concern, hazard evaluation, or formal arborist report. Basic visual assessments may cost less, while complex trees, advanced inspections, shoreline properties, ECAs, and municipal review can increase the total cost.
For a broader breakdown of arborist consulting fees, inspection pricing, report costs, tree surveys, inventories, and assessment pricing, see our Arborist Cost Guide.
| Service | Typical Cost |
|---|---|
| Basic visual tree risk assessment | $150–$350 |
| TRAQ assessment with documentation | $300–$800 |
| Full arborist report for permits | $500–$1,500 |
Properties located in Environmentally Critical Areas (ECAs) or requiring city permit documentation may require more detailed reporting.
Many properties in the Puget Sound region fall within Environmentally Critical Areas (ECAs)—including steep slopes, riparian corridors, wetlands, and shoreline buffers. Trees in these areas are subject to stricter evaluation standards and, in many cases, mandatory arborist reporting before work can proceed.
We provide TRAQ-compliant tree risk assessments specifically tailored for regulated sites, evaluating both tree condition and site constraints such as:
For properties located within regulated areas, our assessments align with Seattle SDCI requirements, as well as neighboring jurisdictions with similar protections.
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Learn more about tree work in Environmentally Critical Areas (ECAs)
Our reports are routinely accepted by Seattle SDCI, Bellevue Development Services, and other cities with regulated critical areas—helping prevent delays, corrections, or permit denials.
A hazard tree is any tree with structural defects that increase the likelihood of failure and pose a risk to people or property.
Common hazard indicators include:
• dead or dying tops
• large cavities or decay pockets
• root plate movement or soil heaving
• severe lean
• major branch failures
A TRAQ-qualified arborist can determine whether mitigation options such as pruning, cabling, or monitoring are appropriate, or whether removal is the safest option.
A Tree Risk Assessment (TRAQ) or formal arborist report is commonly required when trees exceed local city diameter thresholds, are located within Environmentally Critical Areas (ECAs) such as wetlands or steep slopes, or are positioned near property lines, shared boundaries, or public rights-of-way. Reports are also frequently mandated when trees are identified as potential hazards due to defects, lean, soil instability, or proximity to people, structures, or infrastructure.
These requirements are designed to ensure public safety, protect regulated trees, and verify that proposed work complies with applicable municipal tree codes and permitting standards.
A Tree Risk Assessment (TRAQ) or formal arborist report is commonly required when trees exceed local city diameter thresholds, are located within Environmentally Critical Areas (ECAs) such as wetlands or steep slopes, or are positioned near property lines, shared boundaries, or public rights-of-way. Reports are also frequently mandated when trees are identified as potential hazards due to defects, lean, soil instability, or proximity to people, structures, or infrastructure.
These requirements are designed to ensure public safety, protect regulated trees, and verify that proposed work complies with applicable municipal tree codes and permitting standards.
Our arborists provide both tree health assessments and TRAQ-certified tree risk assessments across Seattle, Bellevue, and the Puget Sound region. We prepare permit-ready TRAQ and arborist reports that align with local review standards for Seattle (SDCI) as well as neighboring jurisdictions including Bellevue, Redmond, Renton, Kent, Des Moines, Sammamish, Shoreline, and Tukwila. Our reports are also tailored for shoreline- and wetland-regulated properties, where additional scrutiny and documentation are often required.
By aligning assessments with each city’s specific code language and review expectations, we help homeowners, HOAs, and contractors avoid delays, correction notices, or permit denials.
Sound Tree Care provides ISA Certified Arborist and TRAQ-qualified Tree Risk Assessments throughout the Greater Seattle area. We evaluate tree health, structural defects, root conditions, site factors, and nearby targets to determine the likelihood and consequences of tree failure.
Tree risk assessments are commonly requested for trees near homes, roads, utilities, schools, parks, and other occupied areas. They are also frequently required for tree removal permits, insurance claims, development projects, and properties located within Environmentally Critical Areas (ECAs).
Using the ISA Tree Risk Assessment Qualification (TRAQ) methodology, our arborists provide clear, defensible evaluations and practical mitigation recommendations. Whether you need a basic hazard assessment, a formal written report, or documentation for municipal review, our team serves property owners, contractors, HOAs, attorneys, and municipalities throughout the Puget Sound region.
Explore the locations below to learn more about tree risk assessment services in your area.
Tree Risk Assessments help determine the likelihood of tree or branch failure, the potential targets that could be affected, and appropriate mitigation options. Below are answers to common questions about TRAQ assessments, hazard tree evaluations, permits, insurance claims, and municipal review requirements throughout the Seattle area.
Not always. However, many municipalities require a professional Tree Risk Assessment when requesting removal of protected trees, trees within Environmentally Critical Areas (ECAs), shoreline jurisdictions, steep slopes, or trees associated with permit applications.
A TRAQ assessment documents tree condition, structural defects, potential targets, and failure risk, providing municipalities, insurance companies, and property owners with objective information to support decision-making.
Most residential Tree Risk Assessments take between 30 minutes and 2 hours onsite, depending on the number of trees, property access, and assessment complexity.
Projects involving multiple trees, climbing inspections, root investigations, municipal permitting, or formal written reports may require additional field time and documentation.
Most Tree Risk Assessments are performed from the ground using visual inspection techniques. However, some situations require advanced inspections to collect additional information that cannot be observed from the ground.
When necessary, our ISA Certified Arborists may perform climbing inspections, aerial inspections, root collar excavations, or advanced decay investigations to better evaluate structural defects and potential hazards.
es. We frequently provide arborist reports and Tree Risk Assessments for insurance claims involving storm damage, fallen trees, property damage, and disputed tree conditions.
Our reports can document tree health, structural defects, failure characteristics, and pre-existing conditions to assist property owners, adjusters, attorneys, and insurance carriers.
That is often valuable information. Not every tree with deadwood, lean, cavities, or visible defects requires removal.
A professional Tree Risk Assessment may identify preservation options such as pruning, cabling, bracing, monitoring, root zone improvements, or other mitigation measures that reduce risk while retaining the tree.
Most residential Tree Risk Assessments cost between $450 and $1,500+, depending on the number of trees, documentation requirements, site complexity, and whether a formal written report is needed.
Projects involving municipal permitting, insurance claims, climbing inspections, development review, or multiple trees typically require more extensive analysis and documentation.
Get clarity, confidence, and a defensible expert opinion. Our TRAQ-Qualified team provides fast, professional evaluations across Seattle, Bellevue, and the greater Puget Sound.
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3057 S 146th St SeaTac, WA 98168
Office Hours
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(206) 486-7790
✉️info@soundtreecarellc.com
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Registered Tree Service SDCI: TSP-18505
ISA-Certified Arborists providing tree removal, pruning, stump grinding, and permit-ready arborist reports across Greater Seattle.
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