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Business Details
33 Years
experience
Professional Land Surveying Services in Spokane
Since 1993, Duryea & Associates has provided professional land surveying and mapping services, upholding the highest standards of professional and personal ethics. Our team operates across the Western United States, licensed in California, Oregon, Washington, Idaho, Montana, Arizona, and Colorado. We specialize in delivering tailored solutions for commercial, industrial, and multi-family real estate projects, ensuring precision and reliability. Our streamlined process assigns a single surveyor to each project, maintaining accountability from proposal to completion. We prioritize client confidentiality, safeguarding sensitive information throughout real estate transactions.

With decades of combined experience, our surveyors bring technical expertise and local knowledge to every assignment. Our commitment extends beyond our workwe actively contribute to community initiatives and environmental stewardship. By integrating advanced technology with traditional surveying methods, we address complex challenges efficiently. Our reputation for meeting deadlines supports clients in time-sensitive transactions, including loan processes. This dedication to excellence has solidified our role as a trusted partner in land surveying and mapping services.
Services
ALTA/NSPS Surveys Design Surveys Subdivision Surveys Flood Studies Cell Tower Surveys SFID Mapping
Details
  • Year established: 1993
Highlights and features
  • We assign one surveyor per project for streamlined communication and accountability.
  • Our surveys meet all regulatory requirements with proactive issue resolution.
  • We guarantee confidentiality for sensitive real estate transactions.
  • Licensed in 11 Western U.S. states for comprehensive geographic coverage.
  • Decades of combined experience in commercial and industrial surveying projects.
What people say
On time Professionalism Awesome work ethic Great problem solvers Invaluable assistance
Services
ALTA/NSPS Surveys
We conduct ALTA/NSPS surveys for commercial, industrial, and multi-family real estate transactions. Our surveys meet national standards and address title insurance requirements. Clients receive detailed documentation to support property acquisitions and financing.
Design Surveys
Our design surveys support developers, architects, and engineers with accurate site data. We ensure compliance with local regulations while maintaining project timelines. This service facilitates efficient planning for new construction and site development.
Subdivision Surveys
We provide subdivision and condominium surveys to partition land for development. Our work includes legal descriptions and plat preparation. Clients benefit from our expertise in local zoning and land use requirements.
Flood Studies
Our flood studies assess floodplain risks for real estate projects. We produce FEMA-compliant flood elevation certificates. This service helps clients secure insurance and meet regulatory requirements for properties in flood zones.
SFID Mapping
We specialize in SFID mapping for California school districts. Our surveys meet state-specific documentation requirements for facility improvement projects. Clients receive accurate data to support infrastructure planning and funding applications.
People
Jim Locey
Senior Land Surveyor
With over 40 years of experience, Jim manages projects across Washington and Montana. He combines surveying expertise with aviation skills as a licensed commercial pilot. Active in professional associations, he previously served as Inland Empire Chapter president.
Mason Marker
Senior Land Surveyor
Licensed in Washington and Oregon, Mason brings 25+ years of experience in land development and geomatics. He teaches surveying courses and holds specialized certifications in water rights and federal surveying. Active in professional boards since 2006.
Blake Whelchel
Senior Land Surveyor
Licensed in Oregon, Washington, and Idaho, Blake specializes in topographic mapping. He previously served as Salem's Deputy City Surveyor and contributes to team collaboration across three states. Joined the firm in 2023 after municipal experience.
Questions
What geographic areas do you serve?
We operate across 11 Western U.S. states including California, Washington, Oregon, Idaho, Montana, Arizona, and Colorado.
How do you ensure survey accuracy?
Each project has a dedicated surveyor who oversees work from start to finish, with systematic quality checks and regulatory compliance verification.
What survey types do you specialize in?
We focus on ALTA/NSPS surveys, design surveys, subdivision plats, flood studies, and SFID mapping for school districts.
How do you handle confidential transactions?
All field personnel direct inquiries to our main office to prevent unauthorized information disclosure during real estate transactions.
What makes your firm different?
We combine 30+ years of experience with single-point-of-contact project management for streamlined, deadline-driven service across multiple states.