Business Details
36 Years
experience
Expert Civil Engineering Services in Seattle
At Duncanson Company, we have dedicated ourselves to delivering exceptional civil engineering, surveying, and land planning services since 1990. Our team combines technical expertise with a commitment to ethical practices, clear communication, and meticulous organization. We serve both private and public sector clients across Washington, Oregon, and Idaho, offering comprehensive solutions tailored to each project's unique challenges. From preliminary site investigations to construction closeout, our depth of experience ensures clients receive reliable, innovative support at every stage. We specialize in municipal infrastructure, drainage design, erosion control, and land development, with a proven track record in complex projects ranging from residential subdivisions to institutional facilities.Our focus on collaboration and precision has earned us long-term partnerships with builders, developers, government agencies, and commercial property owners. By staying at the forefront of industry standards and technology, we consistently deliver results that meet regulatory requirements while exceeding client expectations. Our dedication to quality is reflected in our 25-year history of successful projects and satisfied clients throughout the Pacific Northwest.
Services
Site Development
Boundary Surveys
Land Planning
Municipal Road Design
Drainage Design
Erosion Control
Short Plats
Topographic Surveys
Subdivision Planning
Stormwater Management
Details
- Year established: 1990
Highlights and features
- We offer 25 years of experience in civil engineering and land planning
- Our team provides comprehensive services from feasibility to construction
- We specialize in complex municipal infrastructure and drainage projects
- We serve clients across Washington, Oregon, and Idaho
- Our approach combines technical expertise with ethical practices
Services
Civil Engineering
Our civil engineering services encompass site development, drainage design, and municipal infrastructure projects. We provide comprehensive solutions from feasibility studies to construction completion. Our expertise includes erosion control, stormwater management, and regulatory compliance for both public and private sector clients.
Boundary Surveys
We conduct precise boundary surveys and ALTA surveys for residential, commercial, and municipal properties. Our services include boundary line adjustments, control networks, and construction staking. We utilize advanced technology to ensure accurate land demarcation and legal compliance.
Land Planning
Our land planning services cover short plats, subdivisions, and comprehensive development plans. We assist with zoning permits, environmental constraints analysis, and planned unit developments. Our team works closely with clients to create functional, sustainable land use solutions.
Municipal Projects
We specialize in municipal infrastructure including road design, sidewalk systems, and drainage networks. Our services cover feasibility assessments, hydraulic analysis, and construction documentation. We help local governments implement safe, code-compliant public works projects.
Drainage Design
Our drainage design services include stormwater pollution prevention plans and erosion control strategies. We provide detention systems, biofiltration solutions, and hydraulic analysis reports. Our designs meet regulatory requirements while addressing site-specific hydrological challenges.
People
Paul Nelson
Party Chief
Paul Nelson serves as Party Chief at Duncanson Company, bringing extensive field experience in surveying and civil engineering projects. He specializes in construction staking and boundary determination.
Questions
What services does Duncanson Company Company offer?
We provide civil engineering, surveying, and land planning services including site development, drainage design, boundary surveys, and municipal infrastructure projects.
Which areas do you serve?
We serve clients across Washington, Oregon, and Idaho with specialized expertise in Pacific Northwest environmental and regulatory requirements.
How long has your company been in business?
Duncanson Company Company has provided engineering and surveying services since 1990, celebrating 25 years of operation in 2015.
What project types do you handle?
We work on residential subdivisions, commercial developments, municipal infrastructure, and institutional projects including schools and public parks.
How do you ensure project quality?
Our quality assurance process includes technical reviews, regulatory compliance checks, and regular client communication throughout all project phases.
Can you handle complex site challenges?
Yes, we specialize in challenging conditions including erosion control, stormwater management, and environmentally sensitive areas across diverse project types.
