Since 1970, the offices of DobleThomas & Associates, Inc. have provided professional land surveying services, urban planning, civil engineering, aerial photography and photogrammetric mapping throughout Northern California. The efficiency of these disciplines combined is advantageous for our clients as both savings in time and overall project costs. EXPERTISE OF PRINCIPALS: ALTA Land Title Surveyor Expert witness in land surveying related matters Land Development and Subdivision Services Consultant Cartographer to Real Estate Professionals and the Wine Industry Online GIS Mapping solutions for Land Development and Project Management