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The Professional, Scientific, and Technical Services sector comprises establishments that specialize in performing professional, scientific, and technical activities for others. These activities require a high degree of expertise and training. The establishments in this sector specialize according to expertise and provide these services to clients in a variety of industries and, in some cases, to households. Activities performed include: legal advice and representation; accounting, bookkeeping, and payroll services; architectural, engineering, and specialized design services; computer services; consulting services; research services; advertising services; photographic services; translation and interpretation services; veterinary services; and other professional, scientific, and technical services. This sector excludes establishments primarily engaged in providing a range of day-to-day office administrative services, such as financial planning, billing and recordkeeping, personnel, and physical distribution and logistics. These establishments are classified in Sector 56, Administrative and Support and Waste Management and Remediation Services.
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Showing 401–450 of 5665 bids that are currently: Active.
Denotes bidding opportunities that have been amended
| California - US | Agency | Bid Type | Due Date | As PDF |
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Corporate: Crystal Springs Pipeline No. 2 Reach 5 Lining Replacement - SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 23, 2026 |
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Municipal Engineering Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 30, 2026 |
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Green Acres Project (GAP) Reservoir
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 06, 2026 |
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Corporate: Repair and Replace Drainage Systems \u2013 Lead compliance plan
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 26, 2026 |
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Corporate: CONSTRUCTION ON STATE HIGHWAY IN YUBA COUNTY AT AND NEAR OLIVEHURST - SWPPP PREP\/WATER POLLUTION CONTROL PLAN PREPARE
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 25, 2026 |
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Corporate: Construction on State Highway in Yuba County - ANALYTICAL TESTING
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 25, 2026 |
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Corporate: Construction on State Highway in Yuba County - GEOTECH ENGINEERS
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 25, 2026 |
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Corporate: Construction on State Highway in Yuba County - SWPP PLAN ONLY
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 25, 2026 |
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Siphon Assessments
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | May. 05, 2026 |
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Engineering Support Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 28, 2026 |
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Provide Planning\/Environ, Engineering and Project Mgmt.
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 06, 2026 |
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ENGINEERING SERVICES
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 06, 2026 |
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Replace Lampton Cliffs Coastal Accessway Design Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 03, 2026 |
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Old Train Depot Revitalization
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 24, 2026 |
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Inspector of Record for Evans Center Modernization & Voluntary Seismic
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 31, 2026 |
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Special Inspections and Testing Services for the Evans Center Modernization
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 31, 2026 |
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Building Envelope Performance Testing Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 31, 2026 |
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SPECIAL INSPECTOR SERVICES FOR MISSION SMART CLASSROOM PHASE 2
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 31, 2026 |
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INSPECTOR OF RECORD FOR MISSION SMART CLASSROOM PHASE 2
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 31, 2026 |
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Engineering Services for HSIP Cycle 12 Pedestrian School Crossings
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 09, 2026 |
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Corporate: Diamond Valley Lake Holland Road Storm Drainage Improvements - Survey
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 02, 2026 |
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Housing Development Bureau Fee Studies TOS
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 31, 2026 |
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BUILDING EVALUATION AND STRUCTURAL ENGINEERING SERVICES
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 14, 2026 |
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Corporate: Roadway Signs, Pavement Delineation and Marking \u2013 Lead Compliance Plan
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 08, 2026 |
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Corporate: Roadway Signs, Pavement Delineation and Marking \u2013 Time-Related Overhead (Wday)
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 08, 2026 |
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Site for San Diego College of Continuing Education
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 09, 2026 |
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Engineering Services: WCL Phase III Design Feasibility Study
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 17, 2026 |
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Corporate: Alameda Aquatic Center - SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 04, 2026 |
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Corporate: Alameda Aquatic Center - Surveying
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 04, 2026 |
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Environmental and Engineering Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 07, 2026 |
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Corporate: Ave 12 to Pecan Lane: HMA, CRCP, Minor Concrete & Lighting - Lead Compliance
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 09, 2026 |
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Corporate: Ave 12 to Pecan Lane: HMA, CRCP, Minor Concrete & Lighting - Construction Staking
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 09, 2026 |
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Corporate: Ave 12 to Pecan Lane: HMA, CRCP, Minor Concrete & Lighting - Prepare SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 09, 2026 |
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Corporate: Ave 12 to Pecan Lane: HMA, CRCP, Minor Concrete & Lighting - SWPPP Implementation
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 09, 2026 |
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Corporate: Cold Plane, HMA (Type A) & Modify Traffic Monitoring Stations - Lead Compliance
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 02, 2026 |
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Corporate: Cold Plane, HMA (Type A) & Modify Traffic Monitoring Stations - Construction Staking
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 02, 2026 |
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Corporate: Cold Plane, HMA (Type A) & Modify Traffic Monitoring Stations - Prepare SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 02, 2026 |
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Corporate: Cold Plane, HMA (Type A) & Modify Traffic Monitoring Stations - SWPPP Implementation
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 02, 2026 |
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Professional Engineering Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 24, 2026 |
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IRRIGATION PLAN
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 09, 2026 |
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Corporate: Kitchen Remodel at SMUSD District Office - Commissioning
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 26, 2026 |
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Engineering and Design Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 07, 2026 |
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PDB PROJECT OUTREACH
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 31, 2026 |
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Design Services for Circulation Improvement Program
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 06, 2026 |
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LANDSCAPE ARCHITECTURAL DESIGN AND CONSULTING SERVICES
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 30, 2026 |
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Engineering and Related Professional Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | May. 07, 2026 |
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Library Design & Engineering Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 20, 2026 |
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Architectural Design Services - Fleet Facility
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Mar. 26, 2026 |
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Corporate: East Pipeline Inspection and Rehabilitation Project - SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 16, 2026 |
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Professional Construction Document Review
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Apr. 16, 2026 |
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