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Structural Engineering Services in Seattle, WA
Harriott Engineers is a team of professional engineers dedicated to delivering creative solutions for architectural and construction challenges. With decades of combined experience, our team specializes in structural engineering for residential and commercial projects, including new construction, renovations, and seismic retrofits. We prioritize collaboration with architects, contractors, and clients to ensure designs meet functional, aesthetic, and environmental standards. Our expertise extends to temporary excavation shoring, forensic engineering, and sustainable practices such as cement replacement and cross-laminated timber.

Committed to the Pacific Northwest community, we focus on reducing carbon footprints through local retrofits, hybrid work practices, and material reuse. Our affiliations with industry organizations like the Structural Engineers Association of Washington and participation in the SE2050 program underscore our dedication to innovation and sustainability. We serve clients in Seattle and surrounding areas, offering tailored engineering solutions for projects of all scales.
Services
Structural Engineering Residential Projects Commercial Projects Seismic Retrofits Sustainable Design
Highlights and features
  • We offer over 20 years of experience in structural engineering for residential and commercial projects.
  • Our team specializes in sustainable design practices, including cement replacement and cross-laminated timber.
  • We provide tailored solutions for seismic retrofits and forensic engineering challenges.
  • Our participation in the SE2050 program demonstrates our commitment to reducing embodied carbon in construction.
  • We maintain strong relationships with local contractors and architects across the Pacific Northwest.
Associations and certifications
  • Structural Engineers Association of Washington
  • American Concrete Institute
  • American Institute of Steel Construction
  • AIA Seattle
Services
Structural Engineering
We provide comprehensive structural engineering services for residential and commercial buildings. Our expertise includes designing foundations, framing systems, and structural components that meet safety and aesthetic standards. We collaborate closely with architects and contractors to ensure seamless integration of structural elements with architectural vision.
Residential Projects
Our residential services cover new custom homes, renovations, and additions. We specialize in addressing unique challenges of residential structures, from small remodels to large-scale mansions, ensuring structural integrity while maintaining design intent.
Seismic Retrofits
We design seismic retrofit solutions to enhance earthquake resilience in existing buildings. Our approach balances structural performance with cost-effectiveness, focusing on critical reinforcement points to improve safety without compromising functionality.
Sustainable Design
Our sustainable design practice incorporates low-carbon materials like cross-laminated timber and cement substitutes. We optimize structural systems to minimize environmental impact while maintaining structural performance and constructability standards.
Forensic Engineering
We conduct detailed forensic engineering investigations to diagnose structural failures and provide repair solutions. Our team uses advanced analytical techniques to identify root causes and develop effective remediation strategies for residential and commercial properties.
People
James A. Harriott
Principal
With over 20 years of structural engineering experience, Jim specializes in integrating architectural vision with structural requirements. He holds registrations in eight states and contributes to industry organizations like the Structural Engineers Association of Washington.
Todd Valentine
Principal
Todd brings over a decade of consulting engineering experience, focusing on residential and retail structures. He manages projects from design through construction and handles financial operations for the firm.
Kathryn Warner
Project Engineer
Kathryn has 20+ years of experience in residential and commercial engineering. Her dual architecture and engineering background enables effective communication across design disciplines throughout all project phases.
Ian McWhirter
Associate
Ian specializes in adaptive reuse projects and graduated from the University of Washington with both bachelor's and master's degrees in civil engineering. He focuses on sustainable approaches to transforming existing structures.
Henry Nuckles
Associate
Henry joined the firm after completing his master's degree at UW. He focuses on integrating structural design with architectural and construction requirements to create cohesive built environments.
Questions
What services does HV Harriott Valentine Engineers offer?
We specialize in structural engineering for residential and commercial projects, including new construction, renovations, seismic retrofits, and sustainable design solutions.
Do you work on both residential and commercial buildings?
Yes, our expertise covers both residential projects like custom homes and commercial structures such as retail spaces and tenant improvements.
What sustainable practices do you implement?
We use cement replacements like fly ash, cross-laminated timber, and prioritize material reuse in local retrofits to reduce environmental impact.
Are you involved in industry sustainability initiatives?
We participate in the SE2050 program, which focuses on reducing embodied carbon in building designs through shared data and strategies.
How do you handle complex structural challenges?
Our team employs forensic engineering techniques and collaborative problem-solving to address unique structural issues in both new and existing buildings.