NAICS 561621Federal ProcurementSBA SIZE: Varies by Industry

NAICS Classification 561621 Government Contracts

Federal contracting guide, active SAM.gov solicitations, small business size standards, and top purchasing agencies for NAICS code 561621.

SBA Size StandardVaries by IndustrySmall business threshold
Annual Federal SpendMulti-Million Dollar CategoryContract awards per year
Active Solicitations30 Live BidsCurrently open on SAM.gov
Primary BuyersDepartment of DefenseTop purchasing agency

Active SAM.gov Solicitations for NAICS 561621

30 Open Opportunities

J--RAWLINS FIELD OFFICE DOOR ACCESS MAINTENANCE

Agency: DEPT OF DEFENSENotice ID: 140L6226Q0028Location: [object Object], [object Object], [object Object]
NoneAward Notice

The Bureau of Land Management (BLM), Wyoming- Rawlins Field Office Office, has a requirement for a 3-Year Service and Maintenance Agreement for the Rawlins Field Office Door Access Control System. The existing system consists primarily of a Software House C-CURE 9000 access control system supporting approximately 21 controlled doors, associated controllers, and related devices. The anticipated requirement includes C-CURE 9000 software licensing renewal, system upgrades, firmware and software management, annual inspections and testing, preventive maintenance, technical support, deficiency reporting, and system documentation updates.

6350--VA Police Security System Upgrade (VA-26-00085372)

Agency: DEPT OF DEFENSENotice ID: 36C10B26Q0821Location: [object Object], [object Object], [object Object]
NoneAward Notice

The Department of Veterans Affairs (VA), Office of Procurement, Acquisition and Logistics, Technology Acquisition Center, located at 23 Christopher Way, Eatontown, New Jersey awarded a sole source, firm-fixed price contract, purchase order number 36C10B26C0093, on September 25, 2026 to HomeFront Security LLC, 1 PALACE CT, MANORVILLE, NEW YORK 11949, United States, on the basis of other than full and open competition for the procurement of Brand Name Pelco Police Enterprise Security System Upgrade as implemented by Revolutionary Federal Acquisition Regulation Overhaul (RFO) VA Deviation 6.103-5 In accordance with RFO 6.103-5(e) contracts awarded under 6.103-5 do not require the written justifications and approvals described in FAR Overhaul 6.104 unless the award is a sole-source 8(a) contract over $30 million. . For this action, 38 U.S.C. 8127(c), known as the Veterans First Contracting Program provides the authority to directly contract with a Service-Disabled Veteran-Owned Small Business (SDVOSB) or a Veteran-Owned Small Business (VOSB). The total award amount is $145,402.00, with a 12 month period of performance, 9/30/2026 9/29/2027. The primary North American Industry Classification code for this procurement is 561621 Security Systems Services (except Locksmiths) with a size standard of $25M. THIS NOTICE IS NOT A REQUEST FOR COMPETITIVE QUOTES. This notification shall close on October 1, 2026. All responsible sources may submit a response (electronic submission) that addresses the above information by 1:00 p.m. Eastern Standard Time on October 1, 2026 via email to [email protected], Sean Doyle, Contract Specialist.

FTDTL CCTV Camera and Cabling Upgrade

Agency: DEPT OF DEFENSENotice ID: W91QV126PA080Location: Fort George G Meade, MD, 20755, USA
Total Small Business Set-Aside (FAR 19.5)Award Notice

The U.S. Army Forensic Toxicology and Drug Testing Laboratory required replacement of their obsolete analog cameras, one outdoor fisheye camera and associated cabling. The contractor shall furnish all necessary materials, equipment, and related services as necessary to (1) uninstall the existing cameras and coaxial cabling, and (2) install new digital cameras and new ethernet cabling compatible with the existing head end system, and (3) include IP licenses for all cameras. This was a 100% Small Business Set-aside and under the Simplified Acquisition Threshhold of $350,000.00. A site visit was held for a small number of small businesses engaged in security camera system installation.

J--Air National Guard (ANG) Security Forces IDS Emergency Services

Agency: INTERIOR, DEPARTMENT OF THENotice ID: 140D0426F1249Location: HERNDON, VA
No Set-Aside Used (Full and Open Competition)Justification & Approval / Other

Preventive Maintenance, Emergency Repair, Technical Support Center services, training, Parts support, and related support services for existing Advantor-manufactured Electronic Security System (ESS), Intrusion Detection System (IDS), and Electronic Entry Control System (EECS) equipment across Air National Guard installations.

PBA Intrusion Detection System

Agency: DEPT OF DEFENSENotice ID: W519TC-26-C-A107Location: White Hall, AR, 71602, USA
NoneAward Notice

This was awarded as a Firm Fixed Price with competition. Award W519TC-26-C-A107 is result of solicitation of W519TC-26-Q-A214.

RO Fire Protection

Agency: DEPT OF DEFENSENotice ID: 127EAY26Q0052Location: Vallejo, CA, USA
NoneAward Notice

Solicitation 127EAY26Q0052 for RO Fire Protection published by DEPT OF DEFENSE. Contractors must submit responses conforming to the requirements in the official SAM.gov solicitation notice and associated attachments.

ARS Security Door Access Reader Upgrade

Agency: DEPT OF DEFENSENotice ID: 12444326P0059Location: Albany, CA, 94710, USA
NoneAward Notice

Solicitation 12444326P0059 for ARS Security Door Access Reader Upgrade published by DEPT OF DEFENSE. Contractors must submit responses conforming to the requirements in the official SAM.gov solicitation notice and associated attachments.

Intent to Sole Source - Security Access

Agency: DEPT OF DEFENSENotice ID: N6883626P0084Location: Niceville, FL, 32578, USA
NoneAward Notice

Solicitation N6883626P0084 for Intent to Sole Source - Security Access published by DEPT OF DEFENSE. Contractors must submit responses conforming to the requirements in the official SAM.gov solicitation notice and associated attachments.

Closed Circuit TV

Agency: DEPT OF DEFENSENotice ID: N6426726P5026Location: Washington Navy Yard, DC, 20376, USA
NoneAward Notice

Solicitation N6426726P5026 for Closed Circuit TV published by DEPT OF DEFENSE. Contractors must submit responses conforming to the requirements in the official SAM.gov solicitation notice and associated attachments.

Security Archive Workstation 2

Agency: DEPT OF DEFENSENotice ID: 2026-PZI-1801Location: Hanscom AFB, MA, 01731, USA
NoneAward Notice

This contract action was not awarded competitively. The action was awarded using other than full and open competition because only one responsible source could meet the Government’s requirements. The contract type is firm-fixed-price.

Fire Alarm Equipment Replacement at FCI Allenwood

Agency: DEPT OF DEFENSENotice ID: 15BBNF26C20100003Location: Buffalo Grove, IL, 60089, USA
NoneJustification

Solicitation 15BBNF26C20100003 for Fire Alarm Equipment Replacement at FCI Allenwood published by DEPT OF DEFENSE. Contractors must submit responses conforming to the requirements in the official SAM.gov solicitation notice and associated attachments.

H112--Fire Alarm Sprinkler Inspection IDIQ SFVAHCS

Agency: DEPT OF DEFENSENotice ID: 36C26326Q1029Location: [object Object], [object Object], [object Object]
NoneAward Notice

Solicitation 36C26326Q1029 for H112--Fire Alarm Sprinkler Inspection IDIQ SFVAHCS published by DEPT OF DEFENSE. Contractors must submit responses conforming to the requirements in the official SAM.gov solicitation notice and associated attachments.

USACE MVK's JBLMRM Security Camera Replacement

Agency: DEPT OF DEFENSENotice ID: W912EE-26-P-A057Location: Vicksburg, MS, 39183, USA
NoneAward Notice

Solicitation W912EE-26-P-A057 for USACE MVK's JBLMRM Security Camera Replacement published by DEPT OF DEFENSE. Contractors must submit responses conforming to the requirements in the official SAM.gov solicitation notice and associated attachments.

JOFOC – Technical Surveillance Countermeasures (TSCM) Services – Bridge Contract

Agency: DEPT OF DEFENSENotice ID: 89303026CAU000031Location: Washington, DC, USA
NoneJustification

This is a bridge contract for technical, training, administrative, analytical, inspection and equipment support for Office of the Associate Under Secretary for Environment, Health, Safety and Security (AU). This work effort is comprised of technical surveillance countermeasures, tempest, communications security, protected distribution systems and wireless security.

Notifiers

Agency: DEPT OF DEFENSENotice ID: 19AQMM26A0370Location: Washington, DC, USA
NoneAward Notice

Solicitation 19AQMM26A0370 for Notifiers published by DEPT OF DEFENSE. Contractors must submit responses conforming to the requirements in the official SAM.gov solicitation notice and associated attachments.

DRAFT RFP - Global Unified Airbase Readiness and Defense (GUARD) IDIQ - Force Protection Division

Agency: DEPT OF DEFENSENotice ID: FA2381999Location: Hanscom AFB, MA, 01731, USA
NonePresolicitation

AFLCMC/ESSK is issuing this Draft RFP as an RFI to improve understanding of market landscape and engage with industry to ensure our acquisition strategy and formal RFP, upon release, are understandable and actionable. The GUARD IDIQ provides for the acquisition and sustainment of Integrated Base Defense Security Systems (IBDSS) tailored to the Air Force Security Forces community, ensuring the warfighter is equipped with a means to deter, anticipate, deny, detect, report, delay, assess, and track hostile forces and targets for the protection of resources and personnel. **Draft SOW, PWS, and Relevant Experience Self-Scoring matrix updated shortly after publication due to access issues. No material changes made. ** THIS REQUEST FOR INFORMATION IS SOLELY FOR INFORMATIONAL AND PLANNING PURPOSES AND DOES NOT CONSTITUTE A SOLICITATION. IAW RFO 15.101(c)(2), requests to this notice are not offers and cannot be accepted by the Government to form a binding contract, nor do they affect a potential offeror’s ability to respond to a future synopsis/solicitation, which may or may not follow or restrict the Goverenment’s eventual acquisition approach. The Government will not provide reimbursement for any information that may be submitted in response to this notice, and no basis for a claim against the Government shall arise from a response to this notice or Government use of any information provided. Respondents are solely responsible for all expenses associated with responding to this RFI.**

Advanced Programs-OMN-Security System Maintenance

Agency: DEPT OF DEFENSENotice ID: N61340-27-RFI-0177Location: Orlando, FL, 32826, USA
NonePresolicitation

This procurement establishes the contractor tasks for the service, repair, preventative maintenance, and semi-annual test inspections of the Access Control System (ACS) which includes a badging system (computer/printer/camera), and the Intrusion Detection System (IDS) located at NAWCTSD Room 2033 at 12211 Science Dr Orlando, FL 32826. This synopsis is for the same effort that was posted on GSA Advantage in September, under RFQ1835390 - 541330L and RFI1835398 - 541330SEC. See attached PWS and synopsis for details.

H312--Fire Alarm Maintenance Service Contract FY27 - NEW Base + Four - 583

Agency: DEPT OF DEFENSENotice ID: 36C25027Q0009Location: IN, 46202, USA
NoneSolicitation

-A site visit has been organized for Wednesday October 7th, 2026 at 10:00am EDT. Meet at Building 5 at the Richard L. Roudebush VAMC. -Please use the attached RFI form to send question to the contract specialist at [email protected]. All RFIs are due by October 14th, 2026 at 10:00AM EDT and will be answered via amendment posted to sam.gov. Late RFIs will only be answered at the discretion of the government. -Quotes are now due on October 21st, 2026 at 10:00am EDT. -Please use ATTACHMENT II - Instructions for VAAR 852.219-75 UPDATED when submitting your quote.

Amendment 0003 Lenel OnGuard Door Access Control System Upgrade

Agency: DEPT OF DEFENSENotice ID: W911RX26QA050Location: Fort Riley, KS, 66442, USA
NoneCombined Synopsis/Solicitation

The purpose of this Amendment to the Combined Synopsis / Solicitation is to notify potential Offerors that the referenced Solicitation remains a valid requirement. However, due to changes and structuring within the Department of War, the Government is re-evaluating its procurement approach to ensure that the current plan meets all requirements and existing mandates from statute, regulations, and policies. Once a decision is made, either (1) the Solicitation will be Amended, ensuring all updated attachments and exhibits, including submitted questions with responses are published and sufficient time is added to allow vendors to process the new information and prepare quotes or (2) the Solicitation will be cancelled and potentially a new solicitation will be issued.

Integrated Security Services Contract 5

Agency: DEPT OF DEFENSENotice ID: HQ003426RE045Location: 20301
NoneSolicitation

To provide baseline support (system support, maintenance, repair, and logistics) to security applications to multiple PFPA facilities. The baseline support will be issued as task order one. Subsequent task orders will be for ordering hardware and installation of security systems and components in facilities identified by PFPA. Questions are extended to October 9, 2026 at 12pm. All questions are submitted to WHS-ESSD-Mailbox. Please Attachment 17 Section L ADDENDUM Amendment 0001

How to Win Federal Contracts under NAICS 561621

Federal buyers evaluate offerors under NAICS 561621 through a combination of verified technical capability, past performance relevance, and price reasonableness. Follow this proven pursuit framework:

1
Verify SBA Small Business Eligibility for NAICS 561621Confirm your business meets the SBA size standard of Varies by Industry in average annual revenue or employee headcount.
2
Register on SAM.gov with NAICS 561621Add NAICS 561621 to your active SAM.gov entity profile under Goods and Services to qualify for set-aside awards.
3
Review Live Solicitations & Section L & M InstructionsAnalyze current open notices below. Pay close attention to evaluation criteria (Best Value Tradeoff vs Lowest Price Technically Acceptable).
4
Generate Compliance Matrix & Draft Winning Proposal with BidGovAIUse BidGovAI to shred solicitation requirements, extract FAR compliance clauses, and draft evaluator-aligned technical proposal volumes.
Industry Bidding Strategy:

Check the solicitation Section L & M instructions and ensure SAM.gov registration is active.

Top Federal Buyers for NAICS 561621

Department of DefenseMajor purchaser of NAICS Classification 561621
Active Buyer →
General Services AdministrationMajor purchaser of NAICS Classification 561621
Active Buyer →
Department of Veterans AffairsMajor purchaser of NAICS Classification 561621
Active Buyer →

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Frequently Asked Questions About NAICS 561621

What is NAICS code 561621?

NAICS code 561621 is a standard North American Industry Classification System code used by federal contracting officers to categorize solicitations and establish small business size standards.

How do I bid on NAICS 561621 contracts?

To bid on NAICS 561621 opportunities, ensure your entity is registered on SAM.gov with NAICS 561621 listed in your assertions, and submit a compliant offer in response to the active solicitation.