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GKG CONTRACTORS LLC

UEI: M4EGSSW45HW9CAGE: 9NCB6

GKG CONTRACTORS LLC is a federal contractor, registered under UEI M4EGSSW45HW9 and CAGE code 9NCB6. It has been awarded $23,344,632 in federal contracts. Primary work spans Facilities Support Services, Plumbing, Heating, and Air-Conditioning Contractors, and Commercial and Institutional Building Construction. Top awarding agencies include Department Of Defense and Other agencies (1 agencies, <0.5% each).

Contact Information

Registration and classification details

Registration

UEI Code

M4EGSSW45HW9

CAGE Code

9NCB6

Entity Structure

Corporate Entity (Not Tax Exempt)

Established

N/A

Business Classifications

For Profit OrganizationLimited Liability CompanyMinority-Owned BusinessEconomically Disadvantaged Women-Owned Small Business (EDWOSB) Joint VentureSelf-Certified HUBZone Joint VentureWomen-Owned Small Business (WOSB) Joint Venture eligible under the WOSB ProgramHispanic American OwnedSmall Business Joint VentureWoman-Owned Business

NAICS Codes

236115New Single-Family Housing Construction (except For-Sale Builders)
236116New Multifamily Housing Construction (except For-Sale Builders)
236210Industrial Building Construction
236220Commercial and Institutional Building Construction
237110Water and Sewer Line and Related Structures Construction
+10 more

Federal Contracting Overview

Award totals, agency breakdown, NAICS distribution, and geographic footprint.

AI Capability Profile

GKG Contractors LLC specializes in comprehensive facilities support services for defense and federal installations, with deep expertise in the inspection, testing, certification, and maintenance of aboveground and underground storage tanks, fuel systems, and associated environmental infrastructure. ...

GKG Contractors LLC specializes in comprehensive facilities support services for defense and federal installations, with deep expertise in the inspection, testing, certification, and maintenance of aboveground and underground storage tanks, fuel systems, and associated environmental infrastructure. The contractor delivers critical compliance-driven services aligned with CARB executive orders and local APCD/AQMD permit requirements, ensuring vapor recovery systems meet stringent air quality regulations. Their technical capabilities extend to recurring operational support, fund allocation coordination, and non-recurring project execution for military bases, demonstrating proficiency in regulatory adherence, systems integrity validation, and mission-critical infrastructure lifecycle management. A key differentiator is their focused execution on environmental compliance and fuel system safety within high-security DoD environments, where precision and regulatory rigor are paramount. The company maintains a consistent and primary relationship with the Department of Defense, delivering facilities support services across multiple Naval and Air Force installations, including NAS Lemoore and other NAVFAC Southwest Area of Responsibility sites. Their work supports base readiness through environmental compliance, hazardous material management, and infrastructure reliability, establishing a pattern of recurring, mission-aligned contracts that reflect sustained trust and operational integration. GKG Contractors’ primary industry focus is Facilities Support Services (NAICS 561210), which encompasses environmental monitoring, tank system certification, and infrastructure maintenance for federal facilities. While they also have experience in commercial building construction and electrical and plumbing installations, their market positioning is firmly anchored in environmental and safety-critical facilities operations, particularly where federal regulatory compliance intersects with operational continuity. As a Woman-Owned Business operating from Isabela, Puerto Rico, GKG Contractors LLC leverages its small business structure to deliver agile, responsive services tailored to federal facility needs. The company’s certifications enhance its eligibility for set-aside programs and reinforce its commitment to diversity in federal contracting. Its geographic presence supports both continental U.S. and U.S. territory defense infrastructure, positioning it as a reliable regional partner for DoD environmental and facilities maintenance missions.

Key Performance Metrics

Awards Count

50

All time

Active

1

Currently performing

Completed

49

Past period of performance

Total Awards

All time

Contracts

Prime · all time

Subcontracts

Sub · all time

Grants

Prime · all time

Subgrants

Sub · all time

Award Analytics & Distribution

Awards by Agency
Department Of Defense$23.3M100%
Other agencies (1 agencies, <0.5% each)$8.0K0%
Awards by Agency Over Time
Awards by Place of Performance

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NAICS: 238220
New
WOJC - Multi-Building Plumbing Leak Repair Project
Solicitation # WOJC – Multi-Building Plumbing Leak Repair Project
Education and Training Resources is seeking quotes for a subcontracting opportunity to perform multi-building plumbing leak repairs at the Westover Job Corps Center in Chicopee, Massachusetts. The scope of work includes replacing leaking shower P-trap drain pipes in Rooms 123 and 213, repairing a cracked drain pipe in the pipe chase of Room 216, and replacing approximately ten linear feet of leaking heat pipe in both the Administration Building and King Hall. All work must comply with the Massachusetts State Plumbing Code, International Plumbing Code, and applicable federal, state, and local regulations. Contractors are responsible for all cutting, patching, and debris removal, ensuring that all materials used are new and of commercial quality. Interested bidders must submit a detailed quote by October 30, 2026, including a comprehensive cost breakdown of labor and materials, a proposed service schedule, and a bid valid for at least 60 days. Required documentation includes a current SAM.gov UEI number, active registration, W-9, business licenses, Massachusetts plumbing credentials, and certificates of liability insurance. The project is subject to various Federal Acquisition Regulation clauses, including the Davis-Bacon Act and Service Contract Act for prevailing wages, and requires the submission of weekly certified payroll reports. Award selection is at the sole discretion of ETR and is not based solely on the lowest bid. Performance and payment bonds are required for projects exceeding 35,000 dollars, with specific requirements increasing for projects over 150,000 dollars.
Westover Job Corps Center

POSTED

about 3 hours ago

DEADLINE

in 9 days
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NAICS: 238220
New
MI 2026-14 Emergency Heating and Air Conditioning Services
Solicitation # MI 2026-14
Solicitation MI 2026-14 is a request for emergency heating, ventilation, and air conditioning (HVAC) services for the Miami Job Corps Center, a student residential training facility in Florida operated by Adams and Associates, Inc. for the U.S. Department of Labor. The period of performance runs from November 1, 2026, to October 31, 2027. The selected vendor will be responsible for emergency HVAC repairs, with bids requiring a detailed cost breakdown for non-emergency daytime labor (8:00 am to 4:30 pm) as well as emergency, weekend, and holiday rates. As a federally funded facility, the center is entitled to GSA pricing. Award selection is based on the most responsible bidder, with key evaluation factors including cost, Florida state business and employee licensure, insurance coverage, and relevant experience. Mandatory requirements include a valid Unique Entity ID (UEI) and active SAM.gov registration. Vendors must maintain Workers Compensation, Automobile Liability, and Comprehensive General Liability insurance of at least $1,000,000 per occurrence. The contract is subject to Service Contract Act regulations, specifically Wage Determination No. 2005-2248, and Executive Order 13658, which mandates a minimum wage of $13.65 per hour for covered workers through December 31, 2026. Bids must be submitted on company letterhead by October 23, 2026, and must include a W9, Vendor Questionnaire, Authority to Commit, and a statement that the bid is valid for 90 days. Payment terms are NET 30 days from the date of invoice, and invoices must reference the BPA number. Additionally, the contractor must adhere to strict center security protocols, including prohibited fraternization with students and mandatory security searches when entering or leaving the premises.
Miami Job Corps Center

POSTED

about 3 hours ago

DEADLINE

in 2 days
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NAICS: 236220
New
Construction of the Recharge Master Plan Update Basin Improvements Project Montclair Basin Improvements
Solicitation # construction-recharge-master-plan-update-basin-improvements-project-montclair-basin-improvements-2
The Construction of the Recharge Master Plan Update Basin Improvements Project Montclair Basin Improvements is a solicitation issued by RT Contractor Corp for a project under the Inland Empire Utilities Agency in California. This opportunity is specifically set aside for Disadvantaged Business Enterprises (DBE) under the Department of Transportation, with a response deadline of November 4, 2026. The project falls under NAICS code 236220 and focuses on basin improvements within the Riverside or Los Angeles project areas. A critical component of this solicitation is strict adherence to six Good Faith Effort (GFE) requirements designed to ensure DBE participation and secure project financing. Bidders must provide proof of GFE #2, which requires posting solicitations in an online publication for 30 consecutive calendar days and in a print newspaper for one day, as well as proof of GFE #5, involving the utilization of the Small Business Administration (SBA) and the Minority Business Development Agency (MBDA). Failure to submit documentation for these two specific efforts within the bid package will result in the proposal being deemed non-responsive. Additionally, outreach documentation for GFE #1 may be submitted up to three business days after the bid closing date.
RT CONTRACTOR CORP

POSTED

about 3 hours ago

DEADLINE

in 14 days
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NAICS: 238220
New
CBP6585 Bldg. 22 HVAC Replacement
Solicitation # CBP6585
Management & Training Corporation (MTC) is seeking bids for a fixed-price, single lump sum subcontracting opportunity to replace the HVAC system in Building 22 at the San Diego Job Corps Center in Imperial Beach, California. The project, categorized under NAICS 238220, has an estimated value between 0 and 25,000 dollars. The scope of work includes the removal and disposal of existing equipment and the installation of a new 5-ton condenser, furnace, 5-ton evaporator coil, condenser pad, gas flex, shut-off valve, pigtail, fused disconnect, electrical whip, and condensate drain. The contractor is responsible for providing all labor, materials, and refrigerant, and must deliver two sets of operation and maintenance manuals along with manufacturer and installer warranties. Bids are due by October 28, 2026, and must be submitted using the MTC Bid for Lump Sum Contract form. Required submission documents include a detailed cost breakout, proof of insurance, three comparable references, and a completed supplier self-certification packet. A physical site visit and signature on the attendance roster are mandatory prior to bid submission. For bids equal to or greater than 25,000 dollars, a bid bond of 20 percent is required, and the awarded contractor must provide performance and payment bonds equal to 100 percent of the contract price from a surety with at least an A- rating. The contract is subject to the Davis-Bacon Act, requiring compliance with prevailing wage rates and the submission of weekly certified payroll. Contractors must also adhere to OSHA safety standards and provide all necessary personal protective equipment. Payment applications must be submitted to the procurement department using AIA Document G702 or an equivalent form, accompanied by a schedule of values via AIA Document G703. Final acceptance of the work is contingent upon inspection and approval by the San Diego Job Corps Center Facilities and Maintenance Department.
San Diego Job Corps Center

POSTED

about 3 hours ago

DEADLINE

in 8 days
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NAICS: 238220
New
MJCC EXHAUST FANS BLD. 1429
Solicitation # mjcc-exhaust-fans-bld-1429
The Muhlenberg Job Corps Center, operated by Insights Training Group LLC, is soliciting fixed-price quotes from qualified HVAC and mechanical contractors to restore the exhaust fan and louver systems in Building 1429 located in Kentucky. The project scope involves inspecting, repairing, and replacing components for exhaust fans one through eight, specifically addressing failed louver actuators, blown fuses, shorted contactor coils, and missing motors, blades, or guards. Additionally, contractors must provide separate pricing for the system-wide replacement of thermostats, relays, and actuators, as well as any recommended repairs not included in the base bid. The contract will be awarded to the responsible offeror who is technically acceptable and provides the lowest price. Compliance requirements are stringent, requiring contractors to be registered and licensed in the State of Kentucky and verified through the SAM portal. All work must adhere to the Davis-Bacon Act and FAR 22.403-1 labor standards, with weekly certified payroll and signed statements of compliance required for invoice acceptance. Per the Miller Act, payment bonds are required for contracts exceeding 100,000 dollars, and all contractors must prove their ability to secure performance and payment bonding. Safety and environmental regulations, including OSHA and EPA standards, apply, with a requirement to maintain Material Safety Data Sheets and chemical application logs. Quotes must be submitted electronically to mjccpurchasing@insightsllc.net by October 30, 2026, at 5:00pm.
Muhlenberg Job Corps Center / Insights Training Group LLC

POSTED

about 3 hours ago

DEADLINE

in 9 days
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NAICS: 238220
New
Centennial Dry Sprinkler System & Compressor Replacement Services
Solicitation # centennial-dry-sprinkler-system-compressor-replacement-services
Management & Training Corporation (MTC), acting on behalf of the U.S. Department of Labor, is soliciting bids for a fixed-price, single lump sum contract to provide dry-type sprinkler system and compressor replacement services at the Centennial Job Corps Center in Nampa, Idaho. The project scope involves the Men's Dormitory, Women's Dormitory, and Recreation Building, requiring a licensed fire sprinkler contractor to demolish and remove existing distribution piping and failing air compressors, and install new infrastructure to eliminate leaks and prevent equipment short-cycling. All work must adhere to NFPA 25 (2023 Edition) and other local, state, and national codes. The performance period is 30 consecutive business days following a written Notice to Proceed. Bids are due by December 1, 2026, and must include a detailed cost breakout, proof of insurance, and a mandatory physical site visit. For bids equal to or greater than $25,000, a bid bond of 20% of the base bid is required, and the awarded contractor must provide performance and payment bonds from an A-rated surety. Award decisions will be based on overall best value and bidder responsiveness. The contract is set aside for HUBZone, Woman-owned, and Service-Disabled Veteran-owned small businesses. Compliance requirements include adherence to Davis-Bacon prevailing wage rates for Idaho, submission of weekly certified payroll reports, and compliance with various FAR clauses regarding executive compensation reporting, anti-kickback procedures, and subcontractor disclosures for awards exceeding $45,000.
Management & Training Corporation/Centennial Job Corps Center

POSTED

about 3 hours ago

DEADLINE

in about 1 month
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NAICS: 238210
New
Transformer Oil Testing Services
Solicitation # RFP-VC-26-010
The Inland Empire Utilities Agency is soliciting proposals under RFP-VC-26-010 for professional transformer oil testing services to enhance the reliability, safety, and maintainability of its transformers. The scope of work is divided into three primary areas: conducting visual and infrared thermographic inspections to identify thermal anomalies, installing standardized external oil sampling devices to improve safety during collection, and performing detailed oil testing and analysis. Additionally, the selected contractor must provide on-site training for up to 20 agency staff members and develop comprehensive standard operating procedures. All work must adhere to NETA MTS standards, IEEE guidelines, NFPA 70E safety protocols, and ASTM D923 and D924 sampling requirements, with infrared inspections performed by ASNT Level 1 certified technicians or equivalent. The agency intends to make a single award to the most capable offeror based on their project experience with utilities or industrial facilities, proposed staffing and methodology, personnel availability, and cost-effectiveness. Proposals must be submitted electronically via PlanetBids by December 23, 2026, at 3:00 pm. Required documentation includes a detailed project approach, a company profile, three references from the last five years, and various certifications including a Non-Collusion Statement and Workers Compensation Certificate. The contract will utilize fixed pricing with a not-to-exceed total value and requires the contractor to be registered with the Department of Industrial Relations as a public works contractor. Payment will be processed electronically via ACH within 30 days of invoice approval.
Inland Empire Utilities Agency

POSTED

about 3 hours ago

DEADLINE

in 2 months
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NAICS: 561730
New
MJCC LAND MAINTENANCE RFQ
Solicitation # mjcc-land-maintenance-rfq
The Muhlenberg Job Corps Center, operated by Insights Training Group LLC, is soliciting fixed-price quotes for comprehensive ground maintenance services at its campus in Greenville, Kentucky. The scope of work involves mowing, string trimming, edging, and cleanup for approximately 50 acres of maintained property, including areas around 35 or more buildings. The contractor is responsible for providing all necessary labor, supervision, equipment, materials, and insurance to maintain turf between 3 and 4 inches in height on a weekly schedule. The initial contract term is for one year, with the option to renew for up to four additional one-year terms. Award will be granted to a responsible offeror whose quote is technically acceptable and represents the lowest price. To be considered, bidders must be registered in the State of Kentucky, verified through the SAM portal, and provide a detailed price proposal, company qualifications, a safety program, and three references. Compliance with the Federal Acquisition Regulation, OSHA, EPA, and Davis-Bacon Act labor standards is mandatory, specifically adhering to Wage Determination Number KY20210041. Payment is contingent upon the submission of weekly certified payroll and a signed Statement of Compliance. Additionally, prime contractors for contracts exceeding 100,000 dollars must furnish payment bonds per the Miller Act. Quotes are due by October 30, 2026.
Muhlenberg Job Corps Center / Insights Training Group LLC

POSTED

about 3 hours ago

DEADLINE

in 9 days
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NAICS: 238220
New
MJCC HVAC BLD. 1403-04 B HALL
Solicitation # mjcc-hvac-bld-1403-04-b-hall
Insights Training Group LLC, on behalf of the Muhlenberg Job Corps Center in Kentucky, is soliciting fixed-price quotes for an HVAC project at Building 1403-04 B Hall. The scope of work requires the contractor to provide all labor, materials, equipment, and supervision to install two 4-ton Trane 17 SEER split systems using R-454B refrigerant, two 95% AFUE high-efficiency gas furnaces, and matching indoor evaporator coils. Additional requirements include the installation of a Honeywell Pro 8000 programmable thermostat with a remote sensor, new refrigerant line sets, and condensate drain piping. The project must be completed within 45 days of award, with all work adhering to manufacturer specifications, local codes, and EPA regulations for refrigerant recovery. The contract will be awarded to the responsible offeror who is technically acceptable and provides the lowest price. To be considered, bidders must be registered and licensed in the State of Kentucky, verified through the SAM portal, and provide a minimum 90-day bid guarantee along with proof of ability to secure performance and payment bonding. Strict insurance requirements are in place, including a 5 million dollar umbrella liability policy. Compliance with the Davis-Bacon Act and FAR 22.403-1-CWRR is mandatory, requiring the submission of weekly certified payroll and a signed Statement of Compliance with every invoice. Quotes must be submitted electronically to mjccpurchasing@insightsllc.net by October 30, 2026.
Muhlenberg Job Corps Center / Insights Training Group LLC

POSTED

about 3 hours ago

DEADLINE

in 9 days
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NAICS: 236220
New
P084 NEXT GENERATION TORPEDO INTEGRATION LAB & P1016 Consolidated RDT&E Systems Facility – Newport, RI
Solicitation # p084-next-generation-torpedo-integration-lab-p1016-consolidated-rdte-systems-facility-newport-ri
J&J Contractors, Inc. is soliciting bids for the construction of the Next Generation Torpedo Integration Lab and the P1016 Consolidated RDT&E Systems Facility in Newport, Rhode Island. The primary project involves a 12,920 square foot multi-story steel frame laboratory and office facility featuring a shallow foundation, metal standing seam roof, and masonry and metal panel exterior walls. This scope encompasses comprehensive site preparations, including landscaping, parking, exterior lighting, telecommunications, and the installation of underground stormwater retention and utility systems. An additional option for the P1016 facility includes a 17,978 square foot laboratory with similar structural specifications and the demolition of an existing 548 square meter engineering facility. The solicitation is open to various small business designations, including SDB, WOSB, HUBZone, and VOSB. Bidders must adhere to Davis Bacon Wage Rates, and the project is exempt from sales tax. Pricing is requested across a wide array of trades, including demolition, abatement, structural steel, mechanical, electrical, plumbing, and fire protection, among others. Interested parties must contact the primary point of contact to receive the formal bid invitation and documents via Building Connected before the response deadline of November 30, 2026.
J&J CONTRACTORS, INC.

POSTED

about 3 hours ago

DEADLINE

in about 1 month
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NAICS: 238220
New
Roswell JCC – Male Dormitory Bldg. Water Source Heat Pump Replacement (20 units)
Solicitation # roswell-jcc-male-dormitory-bldg-water-source-heat-pump-replacement-20-units
The Career Systems Development Corporation is soliciting proposals for the replacement of twenty failed water source heat pumps at the Roswell JCC Male Dormitory Building in New Mexico. The scope of work includes the removal and off-site disposal of the damaged units and the installation of twenty new Bosch 1-ton units or equivalents. The installation must encompass all necessary ducting, electrical, gas, thermostat wiring, flexible hoses, and pressure valves. A critical safety requirement involves installing smoke dampers with fusible links in all vents leading into the plenum, ensuring all materials used in the plenum are plenum rated. All work must adhere to NFPA 101, NFPA 70, and applicable plumbing, mechanical, and building codes. This solicitation is set aside for small businesses and various SBA-certified categories. The project is subject to the Davis Bacon Act under Wage Determination NM20260014, Revision 1, requiring the submission and approval of weekly certified payroll reports prior to invoice payment. Proposals exceeding 100,000 dollars require payment and performance bonding for 100 percent of the contract value. Submissions must include a safe work process, detailed costs for labor and materials, equipment cut sheets, warranty information, and proof of licensure and insurance. Work is to be coordinated through the Facilities Department and may be scheduled Monday through Friday from 7:00am to 4:00pm.
Career Systems Development Corporation

POSTED

about 3 hours ago

DEADLINE

in 17 days
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