PSC B521: Historical Studies
Service code
Code facts
- Spend category
- Professional Services Management Advisory Services
- Part of
-
-
B
- B5
-
B
- Contract awards
- 20 In the last 12 months
- Contract obligations
- $3,872,384 In FY2025
PSC codes and definitions come from the GSA PSC Manual and contract spending from SAM.gov/FPDS.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $5,813,712 |
| FY2025 | $3,872,384 |
| FY2024 | $7,174,454 |
| FY2023 | $11,518,228 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Downtown Business Improvement District Corp | $3,380,243 | |
| 2 | DDC 4C, LLC | $738,641 | |
| 3 | Techtrans International Inc. | $263,578 | |
| 4 | ACR Consultants, Inc. | $199,220 | |
| 5 | Catalyst Environmental Solutions Corporation | $199,098 | |
| 6 | Western Properties | $178,802 | |
| 7 | Holmes, Christopher D | $172,000 | |
| 8 | Forensic Genealogy Services, LLC | $129,000 | |
| 9 | ASM Affiliates Inc. | $113,941 | |
| 10 | HHM & Associates, Inc. | $99,722 |
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | General Services Administration | $3,380,243 | |
| 2 | Environmental Protection Agency | $738,641 | |
| 3 | Department of Agriculture | $620,589 | |
| 4 | Department of the Interior | $491,455 | |
| 5 | Washington Headquarters Service | $263,578 | |
| 6 | Office of the Secretary of Defense | $172,000 | |
| 7 | Department of the Navy | $135,401 | |
| 8 | Department of the Army | $60,214 | |
| 9 | Department of State | $6,200 |
Top NAICS codes by obligations
| Rank | NAICS code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 561990 All Other Support Services | $3,380,243 | |
| 2 | 541620 Environmental Consulting Services | $1,020,742 | |
| 3 | 541990 All Other Professional, Scientific, and Technical Services | $528,115 | |
| 4 | 115310 Support Activities for Forestry | $377,900 | |
| 5 | 541720 Research and Development in the Social Sciences and Humanities | $209,744 | |
| 6 | 541690 Other Scientific and Technical Consulting Services | $155,332 | |
| 7 | 541320 Landscape Architectural Services | $66,808 | |
| 8 | 712120 Historical Sites | $48,073 | |
| 9 | 712110 Museums | $26,754 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | District of Columbia | $3,386,443 | |
| 2 | California | $349,560 | |
| 3 | Wyoming | $227,120 | |
| 4 | Idaho | $178,802 | |
| 5 | Virginia | $162,171 | |
| 6 | Texas | $129,000 | |
| 7 | Kansas | $113,639 | |
| 8 | Georgia | $99,722 | |
| 9 | Alabama | $66,804 | |
| 10 | Oklahoma | $55,610 | |
| 11 | Washington | $54,474 | |
| 12 | Nevada | $46,833 | |
| 13 | Wisconsin | $26,407 | |
| 14 | Oregon | $21,970 | |
| 15 | Colorado | $15,569 |
Show all 15
Shares are of everything obligated under PSC B521 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 37 more
Latest 47 of 313 listed here. See the rest on GovTribe.
Quick answers
What is PSC B521?
PSC B521 is Historical Studies, a service code in PSC B, Special Studies/
How much do federal agencies spend under PSC B521?
Federal contracts under PSC B521 obligated $3,872,384 in fiscal year 2025 and $28,378,778 in fiscal years 2023 through 2027.
Who are the largest contractors under PSC B521?
The contractors with the most obligated under PSC B521 in fiscal years 2026 and 2027 are Downtown Business Improvement District Corp ($3,380,243); DDC 4C, LLC ($738,641); and Techtrans International Inc. ($263,578).
Which agencies buy the most under PSC B521?
The agencies that obligated the most under PSC B521 in fiscal years 2026 and 2027 are General Services Administration ($3,380,243), Environmental Protection Agency ($738,641) and Department of Agriculture ($620,589).
Which NAICS codes are used with PSC B521?
The NAICS codes with the most obligated under PSC B521 in fiscal years 2026 and 2027 are 561990 All Other Support Services; 541620 Environmental Consulting Services; and 541990 All Other Professional, Scientific, and Technical Services.
Where is the work under PSC B521 performed?
By place of performance, the states with the most contract obligations under PSC B521 over the last 12 months are the District of Columbia ($3,386,443), California ($349,560) and Wyoming ($227,120).
What is the latest contract opportunity under PSC B521?
The latest contract opportunity under PSC B521 is WI-necedah NWR-historic context, award notice from Fish and Wildlife Service, posted September 24, 2026.
On GovTribe
See everything under PSC B521
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