U.S. General Services Administration
Contact
Chat or call
National Customer Service Center
800-488-311
Hours: Sunday 9 p.m. - Friday 9:30 p.m. Eastern time.
Email Us
ProfessionalServices@gsa.gov
Join the Conversation
Professional Services Interact Community
Acquisition support
On this page: Develop your requirements | Conduct market research | Find schedules and ordering resources | Find MAS Professional Services SIN resources
GSA provides professional services acquisition support throughout the contracting process. Use the resources below to develop requirements, conduct market research, place orders, and close out contracts.
Need help with your acquisition?
GSA’s professional services team can assist with:
- Requirements analysis
- Market research
- Acquisition planning and strategy execution
- Project management
- Contracting officer’s representative (COR) support
To request assistance, email professionalservices@gsa.gov.
Develop your requirements
Use these resources to define your requirement, review your task order scope, and develop an acquisition strategy.
Scope reviews
GSA’s free scope review service evaluates the scope of a task order requirement and can help identify potential issues before solicitation. This service may help reduce the risk of protest and is available as a benefit of working with GSA.
Civilian Services Acquisition Workshop
A Civilian Services Acquisition Workshop, or CSAW, is a facilitated workshop that helps an integrated project team develop acquisition requirements.
The workshop guides the team through the complete Steps to Performance Based Acquisition process, from the initial requirement through acquisition completion. Learn more about CSAW and get started.
Conduct market research
Market Research As a Service
Market Research As a Service is a free resource that helps agencies conduct more efficient and informed market research.
- Gather industry data
- Develop business and technical requirements
- Streamline the request for information process
- Identify relevant industry partners
- Obtain expert feedback on acquisition requirements
Find schedules and ordering resources
Use the resources below to support schedule research, order placement, blanket purchase agreement development, and contract closeout.
Schedule reference guides
- GSA Schedules Ordering Guide - quick reference [PDF - 5 MB]
- Multiple Award Schedules Desk Reference (Winter 2019) [PDF - 15 MB]
- State and Local Disaster Purchasing Guide for Professional Services [PDF - 132 KB] (April 2020)
Federal Supply Schedule award and order checklists
| Acquisition activity | Checklist |
|---|---|
| Issue an FSS order for Professional Services | FSS Order Checklist [PDF - 237 KB] |
| Issue an order under an established FSS BPA for Professional Services | FSS BPA Order Checklist [PDF - 236 KB] |
| Establish a multiple award FSS BPA for Professional Services | FSS Multiple Award BPA Establishment Checklist [PDF - 237 KB] |
| Establish a single-award FSS BPA for Professional Services | FSS Single Award BPA Establishment Checklist [PDF - 245 KB] |
Contract closeout
Use the Contract Closeout Quick Reference Guide [PDF - 172 KB] for contract closeout recommendations and best practices.
Find MAS Professional Services resources
Use the resources below to find information about Multiple Award Schedule Professional Services offerings, Special Item Numbers, ordering procedures, and related requirements.
SIN and NAICS code crosswalk
Use the official MAS- PS old SIN to new SIN/NAICS Code Crosswalk Table [XLSX - 92 KB], to identify the new Special Item Numbers, or SINs, associated with MAS Catalog H (00CORP).
The crosswalk table is excerpted from the Available Offerings and Requirements webpage. To view the “Legacy Schedule SIN to Consolidated” tab, download the Available Offerings Attachment [XLSX - 701 KB].
MAS Professional Services Ordering Guides
These ordering guides provide additional information about purchasing services under specific MAS SINs.
| Related NAICS code | MAS SIN | Ordering guide | Description |
|---|---|---|---|
| 541211 | 541211 | 541211 Civilian Contract Auditing Services Ordering Guide - December 2025.pdf [PDF - 473 KB] | Provides guidance for procuring civilian contract auditing services, including financial, performance, and contract audits conducted in accordance with Generally Accepted Government Auditing Standards (GAGAS). |
| 541330 | 541330ENG | 541330ENG Construction Management and Engineering Consulting Services Ordering Guide - December 2025.pdf [PDF - 293 KB] | Describes Real Property Management Services under the MAS SIN 541330ENG subgroup, including construction management and engineering consulting services related to real property. |
| 541611 | 541611 | 541611 Program Evaluation Services Subgroup - June 2026.pdf [PDF - 1 MB] | Provides ordering guidance for program evaluation services. These services use systematic data collection and analysis to assess the effectiveness and efficiency of programs, policies, and organizations. Federal agencies and contractors can learn more about the benefits of this subgroup |
| 541930 | 541930 | 541930 Translation and Interpretation Services Ordering Guide - December 2025.pdf [PDF - 282 KB] | Provides guidance for purchasing translation and interpretation services, including applicable requirements, service descriptions, and procurement practices. |
| 541990 | 541990IPS | 541990IPS Identity Protection Services Ordering Guide - December 2025.pdf [PDF - 194 KB] | Describes identity protection services, including identity monitoring and notification, identity theft insurance and restoration, and safeguards for personally identifiable information and protected health information. See what identity protection services offer and related pricing guidance. |
| 562112 | 562112 | 562112 Hazardous Waste Disposal Services Ordering Guide - December 2025.pdf [PDF - 310 KB] | Describes how to order hazardous waste disposal services, including the management and oversight of hazardous-material disposal and universal waste recycling. |
| 611430 | 611TRAINAW | 611TRAINAW Acquisition Workforce Training Ordering Guide - December 2025.pdf [PDF - 161 KB] | Provides guidance for procuring Acquisition Workforce Training, including FAC-C and DAWIA training options, training modalities, and instructor requirements. |