NAICS 541990 - All Other Professional, Scientific, and Technical Services

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What is NAICS 541990

NAICS code 541990 encompasses establishments primarily engaged in providing professional, scientific, and technical services that are not classified under other specific categories such as legal, accounting, architectural, or advertising services. This sector includes a diverse range of specialized service providers offering unique expertise that supports various governmental and private sector needs. Businesses operating in this category provide niche assessments, inspections, analyses, and counseling services that are critical for informed decision-making and regulatory compliance. Government agencies contract these services to gain access to specialized skills and technical knowledge that may not be available in-house, ensuring high standards of accuracy, impartiality, and professionalism in areas like appraisal, arbitration, and weather forecasting.

Industry Classification for 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).

Illustrative Examples:

  • Appraisal (except real estate) services
  • Marine surveyor (i.e., appraiser) services
  • Arbitration and conciliation services (except by lawyer, attorney, or paralegal offices)
  • Patent broker services (i.e., patent marketing services)
  • Commodity inspector services
  • Pipeline or power line inspection (i.e., visual) services
  • Consumer credit counseling services
  • Weather forecasting services
  • Handwriting analysis services

Breakdown for NAICS 541990

  • Includes specialized professional, scientific, and technical services not classified elsewhere.
  • Targets niche expertise such as appraisal, arbitration, inspection, and counseling services.
  • Supports government agencies requiring impartial and technical evaluations.
  • Subject to small business size standards typically under 500 employees.
  • Contract work ranges from short-term studies to long-term advisory services.

Included Activities for NAICS 541990

  • Providing appraisal services excluding real estate valuations.
  • Conducting marine and pipeline visual surveys for inspection purposes.
  • Offering arbitration and conciliation services outside legal offices.
  • Delivering consumer credit counseling and financial advisory services.
  • Performing weather forecasting and meteorological consulting.
  • Executing commodity inspection and quality assurance tasks.
  • Marketing and brokering patents and intellectual property rights.
  • Conducting handwriting analysis for forensic or evaluative purposes.

Business Types for NAICS 541990

  • Independent appraisal firms
  • Arbitration and dispute resolution organizations
  • Inspection and surveying companies
  • Credit counseling agencies
  • Meteorological and environmental consultancies
  • Patent marketing and brokerage firms

Subcategories for NAICS 541990

  • Appraisal (except real estate) services
  • Arbitration and conciliation services (except by attorney, paralegal)
  • Business brokers (except real estate brokers)
  • Commodity inspection services
  • Construction estimation services
  • Consumer credit counseling services
  • Credit repair (i.e., counseling) services, consumer
  • Electronic communication content verification services
  • Estate assessment (i.e., appraisal) services
  • Fire extinguisher testing and/or inspection, without sales, service, or installation
  • Handwriting analysis services
  • Handwriting expert services
  • Marine forecasting services
  • Marine surveyor (i.e., ship appraiser) services
  • Mediation product services (except by lawyer, attorney, paralegal offices, family and social services)
  • Meteorological services
  • Patent broker services (i.e., patent marketing services)
  • Patrolling (i.e., visual inspection) of electric transmission or gas lines
  • Pipeline inspection (i.e., visual) services
  • Power line inspection (i.e., visual) services
  • Quantity surveyor services
  • Waterless fire suppression system testing and/or inspection, without sales, service, or installation
  • Weather forecasting services

Government Buyers for NAICS 541990

Federal, state, and local government agencies are primary buyers of services under NAICS 541990. Agencies such as the Department of Defense, Environmental Protection Agency, Department of Energy, and various regulatory bodies rely on these specialized technical services for inspections, evaluations, and advisory roles essential to mission success. These agencies require impartial expertise for functions including dispute resolution, commodity inspection, credit counseling, and environmental monitoring. Contracting these services helps agencies meet regulatory requirements, enhance operational efficiency, and ensure compliance with federal standards and policies.

Contract Types & Procurement for NAICS 541990

Contracts awarded under NAICS 541990 typically include fixed-price, cost-reimbursement, and time-and-materials contracts depending on the complexity and duration of the service required. Procurement methods often involve competitive bidding, request for proposals (RFPs), and simplified acquisition procedures for smaller contracts. Contract values vary widely based on scope, ranging from small-scale task orders to multi-million-dollar contracts for comprehensive technical evaluations or ongoing advisory services. Government buyers prioritize contractors with proven expertise, past performance, and the ability to meet stringent quality and reporting standards.

Details for NAICS 541990

Explore the hierarchy and related codes for this industry

NAICS Code Industry Title
541 Professional, Scientific, and Technical Services
5411 Legal Services
54111 Offices of Lawyers
541110 Offices of Lawyers
54112 Offices of Notaries
541120 Offices of Notaries
54119 Other Legal Services
541191 Title Abstract and Settlement Offices
541199 All Other Legal Services
5412 Accounting, Tax Preparation, Bookkeeping, and Payroll Services
54121 Accounting, Tax Preparation, Bookkeeping, and Payroll Services
541211 Offices of Certified Public Accountants
541213 Tax Preparation Services
541214 Payroll Services
541219 Other Accounting Services
5413 Architectural, Engineering, and Related Services
54131 Architectural Services
541310 Architectural Services
54132 Landscape Architectural Services
541320 Landscape Architectural Services
54133 Engineering Services
541330 Engineering Services
54134 Drafting Services
541340 Drafting Services
54135 Building Inspection Services
541350 Building Inspection Services
54136 Geophysical Surveying and Mapping Services
541360 Geophysical Surveying and Mapping Services
54137 Surveying and Mapping (except Geophysical) Services
541370 Surveying and Mapping (except Geophysical) Services
54138 Testing Laboratories and Services
541380 Testing Laboratories and Services
5414 Specialized Design Services
54141 Interior Design Services
541410 Interior Design Services
54142 Industrial Design Services
541420 Industrial Design Services
54143 Graphic Design Services
541430 Graphic Design Services
54149 Other Specialized Design Services
541490 Other Specialized Design Services
5415 Computer Systems Design and Related Services
54151 Computer Systems Design and Related Services
541511 Custom Computer Programming Services
541512 Computer Systems Design Services
541513 Computer Facilities Management Services
541519 Other Computer Related Services
5416 Management, Scientific, and Technical Consulting Services
54161 Management Consulting Services
541611 Administrative Management and General Management Consulting Services
541612 Human Resources Consulting Services
541613 Marketing Consulting Services
541614 Process, Physical Distribution, and Logistics Consulting Services
541618 Other Management Consulting Services
54162 Environmental Consulting Services
541620 Environmental Consulting Services
54169 Other Scientific and Technical Consulting Services
541690 Other Scientific and Technical Consulting Services
5417 Scientific Research and Development Services
54171 Research and Development in the Physical, Engineering, and Life Sciences
541713 Research and Development in Nanotechnology
541714 Research and Development in Biotechnology (except Nanobiotechnology)
541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
54172 Research and Development in the Social Sciences and Humanities
541720 Research and Development in the Social Sciences and Humanities
5418 Advertising, Public Relations, and Related Services
54181 Advertising Agencies
541810 Advertising Agencies
54182 Public Relations Agencies
541820 Public Relations Agencies
54183 Media Buying Agencies
541830 Media Buying Agencies
54184 Media Representatives
541840 Media Representatives
54185 Indoor and Outdoor Display Advertising
541850 Indoor and Outdoor Display Advertising
54186 Direct Mail Advertising
541860 Direct Mail Advertising
54187 Advertising Material Distribution Services
541870 Advertising Material Distribution Services
54189 Other Services Related to Advertising
541890 Other Services Related to Advertising
5419 Other Professional, Scientific, and Technical Services
54191 Marketing Research and Public Opinion Polling
541910 Marketing Research and Public Opinion Polling
54192 Photographic Services
541921 Photography Studios, Portrait
541922 Commercial Photography
54193 Translation and Interpretation Services
541930 Translation and Interpretation Services
54194 Veterinary Services
541940 Veterinary Services
54199 All Other Professional, Scientific, and Technical Services
541990 Current All Other Professional, Scientific, and Technical Services

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