About Us 

Approach and Methodology 

Surveying and Mapping Capabilities 


Project References 

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2015 Best of Woodinville Award

Duane Hartman & Associates, Inc., Surveyors  Land, Woodinville, WA

Duane Hartman and Associates, Inc.Duane Hartman & Associates, Inc., (DHA) , a Veteran-Owned Small Business, delivers Land Surveying and Mapping services to private and public clientele throughout Washington State and the Pacific Northwest.  Owned and managed (since 1993) by Duane Hartman, a local professional surveyor, the firm provides:

  • Land Surveying       
  • Topographic Mapping
  • Right of Way Acquisition Support               
  • Environmental Surveying
  • Waterway (Bathymetric) Surveying
  • Geodetic Control Densification
  • Wetlands Delineation Mapping
  • Alignment Condition and Settlement Surveys
  • Construction Staking and Surveillance
  • Database Management Services

Directed by two registered professional land surveyors, the firms staff practices pride in excellence and cost efficient services for clients throughout the greater King, Pierce and Snohomish County regions.  DHA has an excellent reputation for being a team player with government and private clientele in need of surveying and mapping services. 

DHA’s field staff maintains continuing education and certification for traffic control.  Safety is a first priority for the field operations. All of DHA’s employees carry certification cards for traffic flagger, railroad (E-Rail certified), safety and WSDOT’s requirements for work within the State’s right of ways.  The firm has an excellent reputation for product quality, schedule compliance and budget limitations.

DHA’s fleet of well maintained survey trucks are fully equipped with Trimble GPS units, robotic total stations, digital bar code levels, Sprint/Nextel direct connect and cellular communications, full compliment of small tools, survey supplies and WSDOT required highway safety equipment. 

A DHA crew is always available within 24 hours or less to meet client needs.


Professionally Licensed and Registered in Washington and Oregon

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Providing surveying and mapping services to private and public clientele throughout Washington State and the Pacific Northwest