Terra Firma Surveys, Inc. provides all types of surveying services:

• Boundary Surveys
• Topographic Surveys
• Lot Line Adjustments
• Easements
• Legal Descriptions and Plats
• Record of Survey Maps
• Tentative Parcel Maps
• Parcel Maps
• Final Maps
• ALTA (Title) Surveys
• Design Surveys for Civil Engineers and Landscape Architects
• Construction Staking
• Aerial Topographic Surveys
• In-house color aerial photography of Napa County
• Pond volume surveys
• Wine cave surveys
• Slope analysis 
• FEMA Elevation Certificates
• Precise GPS positioning
• Hydrographic Surveys
• Conservation Easements and Williamson Act Contracts
• Viticultural and agricultural maps
• Expert Witness testimony
• Assistance with city and county applications
• Plot plans and site maps
• CAD services, scanning and reproduction