- A & A Surveying & Mapping
- Accurate Surveying
- Accurate Surveying
- Barajas & Assoc
- Carl Chapman & Assoc-Ventura
- Carl Chapman & Assoc-Ventura
- Case Land Surveying
- Cistran Engineers
- Espinosa Surveying
- Fremming Parson & Pecchenino
- Gahagan & Bryant Assoc Inc
- Geotopo Inc
- Gold Coast Surveying & Mapping
- Gold Coast Surveying & Mapping
- Golden State Surveying & Engrg
- Hernandez-Kroone & Assoc
- Holt Surveying Inc
- J & B Surveying Inc
- Land America
- Landmark Consulting
- M F Engineering & Surveying
- Mercator Photogrammetric Systs
- Mercator Photogrammetric Systs
- Phair Engineering
- Psomas
- Silicon Valley Land Surveying
- Towill Inc
- Transvision
- Vision Enterprises
- Wheatland Surveying
