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
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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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
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.
We follow the structured ISA TRAQ methodology to ensure consistency, accuracy, and defensible outcomes.
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.
The cost of a professional tree risk assessment varies depending on several factors.
Typical factors include:
• number of trees evaluated
• property access and terrain
• documentation requirements
• whether a formal written report is required
Typical ranges:
| 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.
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 LLC provides professional Tree Risk Assessments (TRAQ) across Seattle, Bellevue, Tacoma, and the Greater Puget Sound region. Our ISA Certified Arborists and TRAQ-qualified assessors evaluate tree health, structural stability, root conditions, and surrounding targets to determine the likelihood of tree failure and overall risk level.
Every arborist tree risk assessment is tailored to the unique environmental conditions and municipal regulations found across the region. Properties in Seattle, Bellevue, Redmond, Issaquah, Kent, Tacoma, and nearby communities often require a professional tree risk assessment when trees are located near homes, public rights-of-way, or within Environmentally Critical Areas (ECAs).
Using the ISA Tree Risk Assessment Qualification (TRAQ) methodology, our arborists conduct detailed hazard tree assessments that document structural defects, canopy health, soil stability, and site constraints. These evaluations provide property owners, contractors, HOAs, and municipalities with a clear, defensible assessment of tree risk and recommended mitigation options.
Whether you need a tree hazard assessment in Seattle, a TRAQ arborist evaluation in Bellevue, or a professional tree risk assessment anywhere in the Puget Sound region, our team delivers reliable, code-compliant guidance backed by deep regional arboricultural experience. In many cases, property owners request a tree risk inspection after noticing leaning trees, large dead branches, root damage, or other structural concerns.
Explore the locations below to learn where we provide
tree risk assessment services near you and how our arborists help keep properties safe, compliant, and environmentally responsible.
Tree Risk Assessments help property owners understand whether a tree presents a safety risk, requires professional mitigation, or can be managed through monitoring or pruning. Below are answers to common questions about TRAQ-certified tree risk assessments, hazard tree evaluations, and arborist reports used for permits, insurance claims, and municipal review across Seattle, Bellevue, and the greater Puget Sound region.
These answers are based on ISA Tree Risk Assessment Qualification (TRAQ) standards and local permitting requirements.
In many cities, yes. Municipalities such as Seattle, Bellevue, Redmond, and Sammamish often require a documented Tree Risk Assessment before approving removal—especially when trees are located within Environmentally Critical Areas (ECAs), steep slopes, shorelines, or near property lines.
A TRAQ-qualified assessment provides objective documentation of tree condition, risk factors, and recommended mitigation, which is commonly required for permits, hazard tree approvals, and appeals.
Most on-site tree risk assessments take 30–90 minutes, depending on the number of trees, site conditions, and access. More complex sites—such as properties with steep slopes, wetlands, construction impacts, or multiple targets—may require additional time and documentation.
If a written arborist report is needed for permitting, insurance, or legal purposes, turnaround time is typically a few business days, depending on complexity and agency requirements.
Most Tree Risk Assessments are completed using ground-based inspection techniques, including visual evaluation, probing, sounding, and professional diagnostic tools.
Tree climbing is not always necessary and is only performed when it is required for clarity and can be done safely. Any climbing or aerial inspection is evaluated on a case-by-case basis.
Yes. We regularly provide TRAQ-compliant Tree Risk Assessments and arborist reports used to support insurance claims involving storm damage, fallen trees, or hazardous conditions.
Our documentation helps establish tree condition, likelihood of failure, and contributing site factors, which insurers often require when evaluating coverage and responsibility.
If a tree is determined to be low-risk or not hazardous, we clearly document that finding. In many cases, no immediate action is required beyond monitoring, pruning, or site management recommendations.
A professional risk assessment provides peace of mind by confirming when a tree does not require removal, helping property owners avoid unnecessary work while maintaining safety.
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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Sound Tree Care LLC Operations
(Not Open to Public)
3057 S 146th St SeaTac, WA 98168
Office Hours
Mon–Fri: 8:00 AM – 4:00 PM
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(206) 486-7790
✉️info@soundtreecarellc.com
Licensed • Insured • SOUNDTL769C807NG
Registered Tree Service SDCI: TSP-18505
ISA-Certified Arborists providing tree removal, pruning, stump grinding, and permit-ready arborist reports across Greater Seattle.
Fast estimates • City-compliant work • Clean job sites
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