General And Mechanical Services, LLC
Annapolis, MD
- UEI
- J95SA7JHC9W1
- CAGE
- 1GYD2
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
-
- 221330 Steam and Air-Conditioning Supply
- 236210 Industrial Building Construction
- 236220 Commercial and Institutional Building Construction
- 237110 Water and Sewer Line and Related Structures Construction
- 238210 Electrical Contractors and Other Wiring Installation Contractors
- 238290 Other Building Equipment Contractors
- 332710 Machine Shops
- 335312 Motor and Generator Manufacturing
- SAM.gov registration date
- Physical address
- 1007 Skidmore Dr, Annapolis, MD 21409, USA
- Website
- gms-hvac.com
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- SIC code
- 76 Miscellaneous Repair Services
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $888,415 |
| FY2025 | $97,219 |
| FY2024 | $1,099,231 |
| FY2023 | $2,010,478 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Health and Human Services | $823,881 | |
| 2 | Department of the Interior | $109,884 | |
| 3 | Department of the Army | $27,985 | |
| 4 | Air Force | $4,370 |
Contract vehicles
Expired vehicles (1)
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| Stampede Ventures, Inc. | W912BU22F0071 | $325,000 |
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About the company
General And Mechanical Services, LLC, based in Annapolis, Maryland, is a small business mechanical contractor that provides HVAC, plumbing, electrical systems maintenance, and facilities repair services to federal agencies as a prime contractor on 99% of recent awards, competing on a full-and-open basis with no SBA set-aside certifications. The vendor holds a $30.05 billion ceiling position on the GSA Multiple Award Schedule (MAS) — the dominant driver of its portfolio's potential value — alongside active single-award blanket purchase agreements with the National Institutes of Health and the National Institute of Standards and Technology, and regional delivery orders under the GSA BMO Zone 1 vehicle.
Customer concentration is heavily skewed toward civilian agencies. The top five customer agencies by award count account for 41% of recent awards, led by NIH Construction (45 awards, $4.5 million combined potential value), the National Institute of Standards and Technology (12 awards, $8.5 million), and GSA Public Buildings Service National Capital Region (11 awards, $5.1 million). However, the top-customer-by-dollars ranking diverges sharply: GSA Federal Acquisition Service anchors 100% of combined potential value at $30.05 billion, reflecting the vendor's position on the MAS vehicle rather than individual task-order activity. Stripping out the placeholder MAS ceiling, the vendor's actual recent deal flow concentrates on NIH facilities maintenance work (45 awards at sub-$1 million scale each) and scattered facilities projects across Defense Media Activity, NIST, and regional GSA buildings.
Recent representative prime contracts include a $2.988 million Total Small Business set-aside definitive contract from the Armed Forces Retirement Home for chiller installation services (June 2022), a $315 thousand BPA call from NIH Construction for steam station vent silencer installation (August 2022), a $303 thousand delivery order from GSA National Capital Region for switchgear repairs (October 2022), and a $119 thousand purchase order from the Department of Justice Bureau of Prisons for cooling tower installation (April 2024). The vendor's three most active parent vehicles are the MAS (58 task orders, $17.2 million combined potential value), a NIST blanket purchase agreement (20 task orders, $2.2 million), and another NIST BPA (20 task orders, $1.7 million). Across the GSA Schedule labor portfolio, the vendor offers 11 active categories spanning word processors at $76.84/hr through principal engineers at $268.98/hr, with technician and service-tech roles clustered in the $101–$105/hr band and engineering positions ranging from $115/hr to $269/hr — no security-cleared roles are offered.
Activity over the past five years shows volatility: 15 awards in 2022, declining to 5 in 2023, recovering to 9 in 2024, then settling at 7 in 2025 and 8 in the first nine months of 2026. Only six awards (combined potential value $919 thousand) face ultimate completion in the next twenty-four months, limiting near-term recompete exposure. On SCI-reportable federal service contracts, the vendor invoiced $5.3 million across FY2022–FY2025 as a prime (1.6–2.0 FTEs per year in 2023–2024, lower in 2022 and 2025), with median government-paid hourly rates around $476.74/hr and senior labor pricing through $920/hr. Across SCI-prime contracts, subcontractors account for an average 41% of total contractor hours, with 23 named subcontractors reported — a pattern indicating reliance on specialty trades for electrical, HVAC, and plumbing work rather than in-house delivery. The vendor operates predominantly as a prime (99% of awards) and competes in full-and-open solicitations; its only recent sub award (March 2025) was preventative maintenance, service calls, and repairs on HVAC and plumbing systems under Stampede Ventures, Inc. as prime on the Facilities Investment Services contract.
Quick answers
Is General And Mechanical Services, LLC registered in SAM.gov?
Yes. General And Mechanical Services, LLC's SAM.gov registration is active through March 22, 2027.
Which contract vehicles does General And Mechanical Services, LLC hold?
General And Mechanical Services, LLC holds a place on 3 federal contract vehicles, including 03FAC and MAS.
How much has General And Mechanical Services, LLC received in federal contracts?
Federal contracts obligated $97,219 to General And Mechanical Services, LLC in fiscal year 2025 and $4,095,343 in fiscal years 2023 through 2027.
How does General And Mechanical Services, LLC rank among federal contractors?
General And Mechanical Services, LLC ranked #24 in PSC V129, #66 in PSC H1 and #83 at the Office of Personnel Management in FY2025.
What is General And Mechanical Services, LLC's most recent federal award?
General And Mechanical Services, LLC's most recent federal contract award is C202392 - building 8 lab vacuum pump replacement (75N99026F00005), from NIH Construction, on September 14, 2026.
On GovTribe
See General And Mechanical Services, LLC's full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors