Ray Carlson and Associates, Inc. has been surveying and mapping the North Bay since 1976. As a premier land consulting firm located in Santa Rosa, we offer vast knowledge and a keen understanding of the land throughout Sonoma, Marin, Napa, Lake and Mendocino Counties. With knowledge and records of over 4,800 land parcels, we know original survey lines and monuments used by previous surveyors and we have a great rapport and history with agencies in order to complete your project.