NAICS 541990 - All Other Professional, Scientific, and Technical Services RFPs, RFIs, RFQs, Sources Sought and Government Contracting Opportunities

Browse open All Other Professional, Scientific, and Technical Services (NAICS 541990) RFPs, RFIs, RFQs, and Sources Sought on Bidscope. We aggregate active government contracting opportunities from federal, state, and local agencies, refreshed daily so you never miss a bid. Click any opportunity below for full solicitation details, due dates, and contacts.

About All Other Professional, Scientific, and Technical Services (NAICS 541990)

This industry comprises establishments primarily engaged in the provision of professional, scientific, or technical services (except legal services; accounting, tax preparation, bookkeeping, and related services; architectural, engineering, and related services; specialized design services; computer systems design and related services; management, scientific, and technical consulting services; scientific research and development services; advertising, public relations, and related services; market research and public opinion polling; photographic services; translation and interpretation services; and veterinary services).

StatusTitleBuyerDue Date
OpenMobile BIT and Vehicle Inspection Services for Water Resource Recovery Facility

The City of Oxnard is seeking mobile BIT and vehicle inspection services for its Water Resource Recovery Facility.

Oxnard, CA, USA•Invitation for/to Bid (IFB/ITB)
City of Oxnard7/24/2026
OpenInspection and General Engineering Services

The Township of Toms River is seeking qualifications from vendors to provide inspection and general engineering services.

Toms River, NJ, USA•Request for Proposal (RFP)
Township of Toms River6/23/2026
OpenSpecial Inspection and Testing Services for Academy Charter School

The Matanuska-Susitna Borough is seeking bids for special inspection and testing services for the new Academy Charter School construction project.

Matanuska, AK, USA•Request for Proposal (RFP)
Matanuska-Susitna Borough7/1/2026
OpenOn-Call Professional Services: Geotechnical, Materials Testing & Special Inspections, and Surveying

The Town of Wendell is soliciting Statements of Qualifications from qualified firms for on-call Geotechnical, Materials Testing & Special Inspections, and Surveying services.

Wendell, NC, USA•Request for Quote/Qualifications (RFQ)
Town of Cary7/1/2026
OpenAir Monitoring and Sampling Services

The Village of Rye Brook is seeking sealed bids for air monitoring and sampling services, with bids due on June 25, 2026.

Rye Brook, NY, USA•Invitation for/to Bid (IFB/ITB)
Village of Rye Brook6/25/2026
OpenProfessional Soils Investigation Services for Jefferson Parish

Jefferson Parish Department of Public Works is seeking professional soils investigation services on an as-needed basis for a two-year period.

Jefferson Parish, LA, USA•Request for Proposal (RFP)
Jefferson Parish > Ecosystems & Coastal Management Department-
OpenWorldwide Technical Inspection Services

MTA New York City Transit is seeking worldwide technical inspection and quality audit services for materials at vendor facilities and construction sites.

United States•Invitation for/to Bid (IFB/ITB)Minority-Owned BusinessWoman-Owned BusinessVeteran-Owned Business
New York > Metropolitan Transportation Authority > New York City Transit7/8/2026
OpenThird Party Elevator Inspection Services

Towson University, a state institution in Maryland, is seeking third-party elevator inspection services.

Towson, MD, USA•Request for Proposal (RFP)
State of Maryland > University System of Maryland6/29/2026
OpenBuilding, Fire, Electrical, and Plumbing Inspectors - Woodbridge Township

Woodbridge Township is seeking full-time Building, Fire, Electrical, and Plumbing Inspectors with valid NJ Department of Community Affairs licenses.

Woodbridge, VA, USA•Other
New Jersey League of Municipalities > City of Passaic3/25/2027
OpenDistrict-Wide Services, Repairs, Maintenance, and Installation

Humble Independent School District is seeking proposals for miscellaneous services, repairs, maintenance, and installation on a rolling basis through March 8, 2027.

Humble, TX, USA•Request for Proposal (RFP)
Humble Independent School District8/13/2026
OpenStatewide Right of Way Appraisal Review Services

The Kentucky Transportation Cabinet is seeking qualified consultants to provide statewide Right of Way Appraisal Review Services on an as-needed basis.

Kentucky, USA•Request for Proposal (RFP)
Commonwealth of Kentucky > Transportation Cabinet > Department of Highways5/15/2027
OpenCost Estimating Services, PSA2026-002

The Orange County Sanitation District is soliciting proposals for on-call cost estimating professional services to support their engineering projects.

Orange County, CA, USA•Request for Proposal (RFP)
Orange County Sanitation District7/30/2026
OpenProfessional Real Estate Services for Town of Sewalls Point

The Town of Sewalls Point, Florida, is seeking qualifications for Professional Real Estate Services for a one-year contract, with responses due by July 10, 2026.

78 South Sewalls Point Road, Stuart, FL, USA•Request for Quote/Qualifications (RFQ)
Town of Sewall's Point7/10/2026
OpenBridge Maintenance Engineering Term Contract

The Montana Department of Transportation is seeking proposals for a term contract to provide bridge maintenance engineering services across the state.

Montana, USA•Request for Proposal (RFP)
State of Montana > Department of Transportation7/9/2026
OpenThird-Party Elevator Inspection Services for the City of Newark

The City of Newark is seeking third-party elevator inspection services, with proposals due by July 7, 2026.

Newark, NJ, USA•Request for Proposal (RFP)
City of Newark > Department of Economic Housing & Development7/7/2026
OpenRegional Water Supply Plan Professional Services

The Mount Rogers Planning District Commission is seeking professional engineering and planning services to develop a regional water supply plan for Bland County, Carroll County, Grayson County, Wythe County, City of Galax, and surrounding towns.

Virginia, USA•Request for Proposal (RFP)
George Washington Regional Commission7/27/2026
OpenICE Medical Support Services

The U.S. Department of Homeland Security (DHS) is seeking medical support services for ICE personnel, including pre-employment and post-employment medical, psychological, fitness, and drug testing.

United States•Sources Sought
United States of America > Department of Homeland Security > Immigration and Customs Enforcement7/2/2026
OpenConsulting Engineering Services for Hazard Mitigation Project

Franklin Parish Sheriff's Office is seeking consulting engineering services for a hazard mitigation project.

Franklin Parish, LA, USA•Request for Quote/Qualifications (RFQ)Disadvantaged BusinessWoman-Owned BusinessVeteran-Owned BusinessMinority-Owned Business
Franklin County6/26/2026
OpenWest Campus Lawn and Landscape Maintenance Services

Grambling State University is seeking bids for West Campus lawn and landscape maintenance services.

Grambling, LA, USA•Invitation for/to Bid (IFB/ITB)
Grambling State University7/7/2026
OpenGeotechnical Engineering and Testing Services

St. Lucie County is seeking qualified firms to provide continuing professional services for geotechnical engineering and testing.

St. Lucie County, FL, USA•Request for Quote/Qualifications (RFQ)
St. Lucie County7/15/2026
OpenRequest for Qualifications for Professional Services Term Consultants

The NYS Olympic Regional Development Authority is soliciting qualifications for professional services to establish term consultant contracts for architectural, engineering, and other related professional services.

New York, USA•Request for Quote/Qualifications (RFQ)Minority-Owned BusinessWoman-Owned BusinessVeteran-Owned Business
New York > Olympic Regional Development Authority-
OpenSmith Elementary School Stormwater Inspection Services

The City of New Britain is soliciting proposals for stormwater inspection services for the Smith Elementary School Project.

142 Rutherford Street, New Britain, CT, USA•Request for Proposal (RFP)
State of Connecticut7/2/2026
OpenForfeiture Petition Services for the City of Philadelphia

The City of Philadelphia is seeking forfeiture petition services for its General Support Division.

Philadelphia, PA, USA•Request for Proposal (RFP)
City of Philadelphia6/26/2026
OpenAppraisal and Valuation Services for Land Transactions

The Department of the Interior is issuing a special notice for appraisal and valuation services for various land transactions across multiple states, with price as the primary selection factor.

United States•Request for Proposal (RFP)
United States of America > Department of the Interior > Interior Business Center6/23/2026
OpenHousing Inspection Services for Howard County

The Maryland Department of Housing and Community Development is seeking housing inspection services for Howard County.

Howard County, MD, USA•Request for Proposal (RFP)
Maryland > Maryland Stadium Authority6/26/2026
Frequently Asked Questions
How do I find All Other Professional, Scientific, and Technical Services RFPs?+

Bidscope continuously aggregates open RFPs, RFIs, RFQs, and Sources Sought from federal, state, and local government agencies. Browse the opportunities on this page, or create a free Bidscope account to get matched to relevant bids and receive alerts the moment new ones are posted.

What is NAICS code 541990 (All Other Professional, Scientific, and Technical Services)?+

This industry comprises establishments primarily engaged in the provision of professional, scientific, or technical services (except legal services; accounting, tax preparation, bookkeeping, and related services; architectural, engineering, and related services; specialized design services; computer systems design and related services; management, scientific, and technical consulting services; sci…

How many open opportunities are available for All Other Professional, Scientific, and Technical Services?+

Bidscope tracks open All Other Professional, Scientific, and Technical Services opportunities from federal, state, and local agencies, with the list updated daily as solicitations are posted and closed. Create a free Bidscope account to see how many match your business and get alerted to new ones.

Is Bidscope free to use?+

You can browse government opportunities on Bidscope for free. Create an account to unlock AI-powered matching, saved searches, and instant alerts tailored to your business.

See 1M+ More Opportunities