PSC H356: Inspection – Construction and Building Materials
H356 is the product and service code (PSC) federal agencies use for inspection – construction and building materials, in the inspection services group. Here are the contracts open under it now, the NAICS codes it pairs with, and who buys and wins this work.
- Open contracts now
- 0
- Spending, FY2025
- $21.9 million
- Share to small businesses, since FY2024
- 98%
Open count as of Oct 11, 2026, 6:08 PM ET.
Where H356 sits in the PSC Manual
- Category: Service
- Group H: Quality Control, Test, Inspection
- Group H3: Inspection Services
- Code H356: Inspection – Construction and Building Materials
NAICS codes used with PSC H356
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with H356 most often:
| NAICS | Industry | Spent, last 3 years | Open notices |
|---|---|---|---|
| 541330 | Engineering Services | $31.3 million | — |
| 236220 | Commercial and Institutional Building Construction | $22.1 million | — |
| 541611 | Administrative Management and General Management Consulting Services | $6.2 million | — |
| 541712 | Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) (old code; now 541715) | $4.5 million | — |
| 541614 | Process, Physical Distribution, and Logistics Consulting Services | $749,992 | — |
| 541380 | Testing Laboratories and Services | $668,544 | — |
Who buys under PSC H356
Agencies with the most contract dollars under H356 over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| National Park Service | $44.4 million |
| Department of the Army | $15.1 million |
| U.S. Coast Guard | $5.3 million |
| Federal Emergency Management Agency | $1.1 million |
| Federal Bureau of Investigation | $458,221 |
| Department of Housing and Urban Development | $251,616 |
| Department of Veterans Affairs | $223,196 |
| Department of State | $195,981 |
Federal spending under PSC H356 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $20.1 million |
| FY2025 | $21.9 million |
| FY2026 (incomplete) | $24.7 million |
Headline figures use FY2025, the last complete year. FY2026 is still incomplete and will rise until about early January 2027 as Defense data arrives: USAspending.gov publishes Defense contracts 90 days after they're signed.
Who wins PSC H356 contracts
| Company | Obligated, last 3 years |
|---|---|
| Project Solutions, Inc. | $16.7 million |
| Accura Engineering and Consulting Services, Inc. | $12.9 million |
| Ace Consulting Company, Inc. | $4.5 million |
| Unified Business Technologies, Inc. | $4.5 million |
| Procon Consulting LLC | $4 million |
| Ecompex, Inc. | $4 million |
| Genco Systems Inc | $2.2 million |
| Alpha Construction and Engineering Corporation | $1.8 million |
| Jay Shapiro & Associates, Inc. | $1.5 million |
| Construction Support Solutions LLC | $1.2 million |
Linked names have a FedReady profile, which shows the NAICS codes a business is registered as small under. Most large companies have none.
Related PSC codes
- H310 Inspection – Weapons
- H311 Inspection – Nuclear Ordnance
- H312 Inspection – Fire Control Equipment
- H313 Inspection – Ammunition and Explosives
- H314 Inspection – Guided Missiles
- H315 Inspection – Aircraft and Airframe Structural Components
- H316 Inspection – Aircraft Components and Accessories
- H317 Inspection – Aircraft Launching, Landing, and Ground Handling Equipment
- H318 Inspection – Space Vehicles
- H319 Inspection – Ships, Small Craft, Pontoons, and Floating Docks
Frequently asked questions
What is PSC H356?
H356 is the service code in the federal Product and Service Code (PSC) Manual for inspection – construction and building materials, under H (Quality Control, Test, Inspection) and H3 (Inspection Services). Agencies put a PSC on every contract to record what they bought.
What is the difference between a PSC and a NAICS code?
A PSC describes what the government is buying. A NAICS code describes the industry of the business doing the work, and it sets the SBA size standard for small business set-asides. Every contract notice has both.
Which NAICS code goes with PSC H356?
Most federal contract dollars under PSC H356 go with NAICS 541330 (Engineering Services), according to USAspending.gov. The contracting officer picks the NAICS code for each solicitation, so check the notice.
How do I find contracts that use PSC H356?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. FedReady can match new ones to your business and email you, free.