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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 501–550 of 6926 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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Special Inspection Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Oct. 29, 2026 |
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Corporate: Multi-Family 8-Plex Rebuild Apartment Building - HVAC Commissioning
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 09, 2026 |
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Corporate: Machado Wastewater Treatment Facility (WWTF) Upgrade and Expansion - Construction Survey
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 20, 2026 |
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Corporate: Machado Wastewater Treatment Facility (WWTF) Upgrade and Expansion - Storm Water Pollution Control\/SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 20, 2026 |
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Corporate: Loftin Stadium Sports Lighting and Sound System Improvements - Architectural Woodwork
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Oct. 29, 2026 |
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Corporate: Digester 9 Expansion at Visalia Water Reclamation Facility - SURVEYING
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 19, 2026 |
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Corporate: Digester 9 Expansion at Visalia Water Reclamation Facility - SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 19, 2026 |
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Corporate: Bubbling Wells ES - New Construction and Modernization - Field Engineering
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 19, 2026 |
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Corporate: RHMA, Cold Plane AC Pavement, Vegetation Control (Minor Conc) and MGS \u2013 Pre\/post construction surveys
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Dec. 01, 2026 |
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Mechanical Engineering Retainer
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 13, 2026 |
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Deputy Council Surveyor
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 02, 2026 |
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Dewatering Improvements
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Dec. 18, 2026 |
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COMMISSIOING SERVICES CONSULTANTS
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 05, 2026 |
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TOPOGRAPHICAL SURVEYORS
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 05, 2026 |
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Corporate: Sanger USD New Temperance ES - Storm Water Pollution Prevention Program
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Oct. 30, 2026 |
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Corporate: Sanger USD New Temperance ES - Surveying & Staking
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Oct. 30, 2026 |
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Architectural Design Services \u2013 City Hall Landscape and Hardscape Improvements
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Oct. 28, 2026 |
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Corporate: SRVFD Fire Station #31 - Surveying
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Oct. 28, 2026 |
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Corporate: SRVFD Fire Station #31 - SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Oct. 28, 2026 |
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Corporate: South Whittier Community Bikeway Access Improvements - SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 03, 2026 |
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Corporate: South Whittier Community Bikeway Access Improvements - Testing
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 03, 2026 |
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Corporate: South Whittier Community Bikeway Access Improvements - Materials Testing Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 03, 2026 |
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Corporate: Construct Bridge Structure for Fish Passage Restoration \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 | Dec. 03, 2026 |
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Parks Master Plan
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 12, 2026 |
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Environmental Science and Engineering Contract, A-E Services to be Ordered on Indefinite-Delivery, Indefinite-Quantity Schedule
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | Federal Bids | Nov. 02, 2026 |
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ENGINEERING, SURVEYING AND ENVIRONMENTAL SERVICES
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 19, 2026 |
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Professional Services for Streetlight Master Plan
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 19, 2026 |
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Alternative Design-Build Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Dec. 15, 2026 |
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Electrical Studies for DOU Facilities
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 04, 2026 |
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Corporate: Mokelumne River Floodplain Habitat Restoration Project - Survey
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 06, 2026 |
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Corporate: Mokelumne River Floodplain Habitat Restoration Project - SWPPP
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 06, 2026 |
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Corporate: LA General Medical Center RCV Parking Lot Project Parking - Survey
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 05, 2026 |
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Corporate: O\u2019Shaughnessy Cap Utility Upgrades - 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 | Oct. 29, 2026 |
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Oakes College Housing Capital Improvements
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 17, 2026 |
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Elevator Repairs
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 24, 2026 |
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Fire Alarm
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 24, 2026 |
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General Construction
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 24, 2026 |
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Corporate: Cold Plane, HMA, Curb Ramp, Culvert, and Modify Electrical System \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 | Nov. 18, 2026 |
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Corporate: Construct Treatment BMPS For Stormwater Mitigation \u2013 Lead Compliance Plan Ls 1
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 19, 2026 |
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Corporate: Construct Treatment BMPS For Stormwater Mitigation \u2013 Time-Related Overhead (Wday) Wday 200
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 19, 2026 |
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UC Botanical Garden Access Improvements
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Oct. 29, 2026 |
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General Engineering Construction
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 12, 2026 |
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Engineering Design Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 12, 2026 |
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Architectural Services
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 12, 2026 |
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Plan Check, Engineering, Environmental, and Office & Field Support
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 30, 2026 |
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Design and Bid Support Services for New Administration Building
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Dec. 03, 2026 |
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PREPARE REPORT, GRANT APPLICATION SUPPORT FOR CONSTRUCTION, DESIGN, PS&E
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Dec. 10, 2026 |
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Corporate: Cold Plane, HMA, Curb Ramp, Culvert, and Modify Electrical System \u2013 Pre\/post construction surveys
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 18, 2026 |
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Corporate: Pavement Reconstruction (Sustainable) North Los Angeles County - Survey
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 03, 2026 |
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Corporate: Main Wastewater Treatment Plant Secondary Reactors Rehabilitation, Phase 2 - surveying
54 - Professional, Scientific, and Technical Services (to see the full NAICS category code login or upgrade) |
login to see | State/Local Bids | Nov. 18, 2026 |
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