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CS One Co., Ltd.

UEI: SLED_09DDEF939607E834

CS One Co., Ltd. is a federal contractor, registered under UEI SLED_09DDEF939607E834. It has been awarded $622,137,300 across 10 federal contracts. Primary work spans Unknown NAICS, Plumbing, Heating, and Air-Conditioning Contractors, and Other NAICS codes (4 codes, <0.5% each). Top awarding agencies include Navfacsyscom Far East.

Contact Information

Registration and classification details

Registration

UEI Code

SLED_09DDEF939607E834

Federal Contracting Overview

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

Key Performance Metrics

Awards Count

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Active

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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

Navfacsyscom Far East$622.1M100%

Awards by NAICS

- Unknown NAICS$594.7M95.6%

238220 - Plumbing, Heating, and Air-Conditioning Contractors$23.4M3.8%

Others - Other NAICS codes (4 codes, <0.5% each)$4.0M0.6%

Awards by Agency Over Time

Awards by Place of Performance

Open opportunities in CS One Co., Ltd.'s top NAICS codes and agencies

Plumbing & Piping Systems InstallationThe contract titled Plumbing & Piping Systems Installation pertains to the installation of water supply, sewer, drainage, and plumbing fixtures in strict adherence to applicable environmental and plumbing codes. It is structured as a subcontract under the NAICS code 238220, indicating classification within plumbing, heating, and air-conditioning contractors. The opportunity was posted on July 29, 2026, with a response deadline of August 30, 2026, at 4:00 AM, requiring all proposals to be submitted prior to this time. The place of performance is designated in the location identified as 39855, though specific city and state details are not provided. The contracting entity is listed as W2SD Endist New York under the Department of Defense, signaling a defense-related project with stringent regulatory and compliance requirements. All work must align with federal standards for infrastructure installation, emphasizing technical precision, environmental responsibility, and adherence to plumbing regulations.

W2SD Endist New York

POSTED

about 11 hours ago

DEADLINE

in about 1 month

HVAC System Installation & CommissioningThe contract entails the comprehensive supply, installation, and testing of HVAC systems complete with ductwork and ventilation infrastructure, all engineered to meet strict environmental and technical specifications. A critical requirement is the use of CFC-free insulation materials to ensure compliance with ecological standards and sustainability mandates. The work falls under NAICS code 238220 and is structured as a subcontract, with performance expected at the location identified as 39855. The opportunity was posted on July 29, 2026, with a firm deadline for responses set for August 30, 2026, at 4:00 AM. This procurement is managed under the auspices of the Department of Defense through its agency W2SD Endist New York, indicating the project supports defense-related infrastructure needs. All systems must be fully commissioned and verified to operational standards prior to acceptance.

W2SD Endist New York

POSTED

about 11 hours ago

DEADLINE

in about 1 month

HVAC Filter Replacement and Indoor Air Quality MaintenanceThe contract mandates the regular replacement of HVAC filters at the contractor’s expense, with all filters required to meet a minimum MERV 8 rating in accordance with ASHRAE Standard 52.2-1999 to ensure consistent indoor air quality. The contractor is responsible for maintaining a documented record of all filter changes, including dates, quantities, and any observations related to system performance or air quality conditions. This ongoing maintenance is critical to sustaining operational efficiency and health compliance within the facility located in Spokane, Washington, with the zip code 99202. The contract is classified as a subcontract under NAICS code 238220 and is issued by the Department of Defense through the agency W071 Endist Seattle. Although the specific solicitation number is not provided, the opportunity was posted on July 29, 2026, with a response deadline of August 28, 2026. The place of performance is fixed at the Spokane location, and all work must be completed in alignment with the specified technical and documentation standards. There is no set aside type designated, and the contract does not include a designated point of contact, requiring bidders to rely on the provided SAM.gov link for further details.

W071 Endist Seattle

POSTED

about 11 hours ago

DEADLINE

Fire Sprinkler System InstallationThe contract entails the installation and testing of fire sprinkler systems adhering strictly to NFPA 13 standards across a designated location in East Wenatchee, with all work required to meet federal safety and performance benchmarks. The scope includes comprehensive system verification through rigorous testing protocols to ensure proper functionality, coverage, and compliance prior to final acceptance. Ongoing maintenance activities must align with NFPA 25 requirements, ensuring continuous operational readiness of the systems through scheduled inspections, repairs, and component replacements as needed. The contract is structured as a subcontract under the Department of Defense, specifically managed by W071 Endist Seattle, and falls under NAICS code 238220 for fire protection system contracting. All work must be completed and submitted by the deadline of August 28, 2026, with performance taking place exclusively at the specified site in East Wenatchee, Washington.

W071 Endist Seattle

POSTED

about 11 hours ago

DEADLINE

Access Control and Low-Voltage Systems IntegrationThe contract awards the design and installation of low-voltage systems encompassing access control, security, and communications infrastructure, all required to meet federal safeguarding standards. The work is focused on ensuring integrated, secure, and compliant technical systems tailored to federal requirements, with specific emphasis on physical and electronic security measures that protect sensitive operations and data. The project demands technical expertise in modern low-voltage technologies, adherence to strict federal protocols, and precise execution to support mission-critical environments. The contract is classified as a subcontract under NAICS code 238220 and is managed by the Department of Defense through its W071 Endist Seattle office. Performance is required in East Wenatchee, with a deadline for responses set for August 28, 2026, and the solicitation was posted on July 29, 2026. There is no specific set-aside designation, and the project does not indicate geographic or vendor eligibility restrictions beyond federal compliance. All work must align with the federal safeguarding framework, ensuring systems are resilient, audit-ready, and integrated seamlessly within existing infrastructure.

W071 Endist Seattle

POSTED

about 11 hours ago

DEADLINE

HVAC System InstallationThe contract calls for the installation of a comprehensive heating, ventilation, and air conditioning system including all associated ductwork and control components at Fort Stewart, Georgia, under the NAICS code 238220 for HVAC installation. The work is structured as a subcontract and is being managed by the Department of Defense through its W074 Endist Savannah office, with the performance location specified at the Fort Stewart military installation. All work must be completed in accordance with military standards and facility requirements, though specific technical specifications are not listed in the provided data. The solicitation was posted on July 29, 2026, and responses are due by August 6, 2026, at 4:00 PM Eastern Time. The contract does not indicate any set-aside status for small businesses or other categories, and no point of contact information is provided in the solicitation details. Prospective subcontractors must ensure compliance with all federal guidelines and DoD procurement regulations, and should verify technical requirements through direct engagement with the contracting office prior to submitting a proposal. The official solicitation page is accessible via the provided Sam.gov link for further details.

W074 Endist Savannah

POSTED

about 11 hours ago

DEADLINE

Plumbing and Piping SystemsThe contract pertains to the installation of domestic water, waste, vent, and medical gas piping systems at Fort Stewart, Georgia, under the NAICS code 238220 for plumbing, heating, and air-conditioning contractors. It is structured as a subcontract and is issued by the Department of Defense through the W074 Endist Savannah office, with a response deadline of August 6, 2026, at 4:00 PM. The work is specifically required at the Fort Stewart location, where the systems must meet all applicable technical, safety, and regulatory standards for both conventional and medical-grade piping. All installations are expected to be completed in accordance with the project’s engineering specifications and must ensure full functionality and compliance with health and safety codes for a military installation.

W074 Endist Savannah

POSTED

about 11 hours ago

DEADLINE

Indefinite Delivery/Indefinite Quantity (IDIQ) Contract to Repair and Replace Roof Systems at Commander Fleet Activities Yokosuka (CFAY) and Naval Air Facility Atsugi (NAFA), Japan

Solicitation # N4008426B1005

This contract amendment pertains to an indefinite delivery/indefinite quantity (IDIQ) agreement for the repair and replacement of roof systems at Commander Fleet Activities Yokosuka and Naval Air Facility Atsugi in Japan. The amendment serves solely to provide additional information through Notice 2, which was issued in response to pre-bid inquiries and does not alter the original solicitation terms unless formally amended via an SF30 document. The bid submission deadline remains fixed at 2:30 p.m. JST on August 5, 2026, and all offerors must acknowledge receipt of this amendment by completing Block 19 of the SF1442 form. The solicitation number is N4008426B1005, with a NAICS code of 238160 for roofing contractors, and is managed by the Naval Facilities Engineering Systems Command Far East under the Department of Defense. All contractual activities are to be performed at the specified military installations in Japan, with the office address listed as FPO AP 96349-0013. Primary point of contact for inquiries is Tomoko Kanzaki, with Teresa Aguon as the secondary contact, both reachable through official Navy email addresses. The solicitation was posted on July 29, 2026, and can be accessed via the official SAM.gov link.

Navfacsyscom Far East

POSTED

about 11 hours ago

DEADLINE

AS4108 Oil Filtration Cart Power

Solicitation # N4008526R9070

Only Mechanical MACC Contractors listed on the General Requirements cover page are eligible to submit proposals for this Small Business Set Aside contract under solicitation number N40085-26-R-9070, titled AS4108 Oil Filtration Cart Power, with a response deadline of August 19, 2026, at 3:00 PM EST. Proposals must be submitted via email to Ashley Ruiz and Lauren Loconto at the Navy Facility Engineering Command Mid-Atlantic office in Norfolk, Virginia, and must reference applicable attachments including the Marine Corps Installations East Environmental Policy Statement, Spill Report Form, and weekly inspection forms for hazardous waste and satellite accumulation areas. The project performance location is Camp Lejeune, North Carolina, and work must commence within 15 days of award, with final completion required 90 days prior to the contract completion date. The contract is awarded under NAICS code 238220 and requires strict compliance with SDSFIE geospatial data standards, ASTM testing protocols for concrete, soil, and asphalt, and adherence to OSHA, EPA, and EM 385-1-1 safety requirements. Contractors must submit a Technical Approach document, phased GIS deliverables, digital and paper maps, and red-line construction drawings, all formatted to ANSI C size with proper legends and scales. All documentation must be uploaded to the eCMS system, marked as unclassified or CUI, and must exclude PII. Safety compliance is mandatory, requiring a monthly Contractor Safety Self-Evaluation score of 90 or above, with failure triggering a 10% payment retention, along with monthly exposure reports and submission of current backflow preventer certifications. Key personnel, including the superintendent and Site Safety and Health Officer, must meet specific experience thresholds and provide detailed resumes. Invoicing must be processed through Wide Area WorkFlow with a maximum file size of 2 megabytes per attachment. Contract clauses FAR 52.236-9 and FAR 52.246-21 apply, mandating protection of existing infrastructure and warranty of construction. Attachments require hard-copy bound volumes with tables of contents and two labeled CD/DVDs, while CAD files are provided for reference only. The Government reserves approval authority for all submittals and retains final acceptance jurisdiction upon completion and verification of work.

Navfacsyscom Mid-Atlantic

POSTED

about 11 hours ago

DEADLINE

FCC Pollock Upgrade Complex HVAC Control Systems Project 26Z5AY1

Solicitation # 15B51926PR000469

The Federal Bureau of Prisons is seeking market input for a planned firm-fixed-price construction contract to upgrade the complex HVAC control systems at the Federal Correctional Complex Pollock in Louisiana. The project, which involves designing, building, and installing a comprehensive Building Automation System, is estimated to range between $1 million and $5 million and falls under NAICS code 238220 for Plumbing, Heating, and Air-Conditioning Contractors. This notice is strictly for market research and is not a solicitation; no proposals or qualification documents are being requested at this time. Interested small business contractors must be currently registered in SAM.gov with accurate size status information meeting the $19 million average annual receipts threshold and must self-certify any applicable socioeconomic status such as WO, 8(a), HUBZone, or SDVOB. To express interest, vendors must add their names to the Interested Vendors List on SAM.gov and complete the attached Market Research Questionnaire, which should be returned to kbillington@bop.gov. Access to future solicitation documents will require an active SAM.gov registration, a valid MPIN, and approval to access controlled files. The anticipated synopsis will be posted at a later date, and all interested parties are advised to monitor SAM.gov for updates. Only prime contractors may respond; subcontracting arrangements are the responsibility of the selected prime and are not under the purview of the Federal Bureau of Prisons.

POSTED

about 11 hours ago

DEADLINE

REQUEST FOR QUOTATION NO. N4008426Q1023 STRAIGHT VEHICLE LEASE FOR NAVAL CRIMINAL INVESTIGATIVE SERVICE, NAVAL FACILITIES ENGINEERING SYSTEMS COMMAND FAR EAST AREA OF RESPONSIBILITY

Solicitation # N4008426Q1023

The U.S. Department of Defense, through the Naval Facilities Engineering Systems Command Far East, is seeking quotes for straight vehicle lease services to support the Naval Criminal Investigative Service’s field offices in Atsugi, Iwakuni, Misawa, Okinawa, Sasebo, and Yokosuka, Japan. This solicitation, numbered N4008426Q1023, is issued as a combined synopsis and request for quotation under FAR Part 12 for commercial services and does not obligate the government to award a contract or authorize any work to begin. Offers must be submitted by August 28, 2026, and no separate written solicitation will be issued. The acquisition is not set aside for small businesses and is classified under NAICS code 336110. All terms, conditions, provisions, and clauses are incorporated by reference and are accessible through www.acquisition.gov. The point of contact for inquiries is Kiko Douman, reachable via email at kiko.douman.ln@us.navy.mil.Responses are to be submitted through the SAM.gov platform using the provided link.

Navfacsyscom Far East

POSTED

about 11 hours ago

DEADLINE

Construct Headquarters and Operations Building, Baucau, Timor-Leste

Solicitation # N4008426R4998

The U.S. Department of Defense, through NAVFACSYSCOM Far East, is soliciting design-build services for the construction of a Headquarters and Operations Building at Baucau Airfield in Timor-Leste under solicitation number N4008426R4998, with a projected contract value between $1 million and $5 million. The project, classified under NAICS code 236220, requires contractors to adhere to Unified Facilities Criteria, the International Building Code, or host nation requirements. A pre-solicitation site visit is scheduled for July 8, 2026, from 10:00 to 12:00 local time at Baucau Airfield, with the designated meeting point at the airfield entrance. Attendance is strictly contingent upon prior submission of a Base Access Request by the May 21, 2026, deadline; contractors who failed to submit the request by that date are barred from participating. Only two participants, one driver, and one vehicle per company are permitted on the visit, with the driver required to remain in the vehicle at all times. Contractors are responsible for their own transportation and must supply an active SAM registration in PDF format. All personnel must be listed in an Excel spreadsheet named “Encl 1 Personnel Roster_[Short Company Name]” using proper case formatting, and submitted as a single, bookmarked PDF titled “[Company Name]_IDs” with bookmarks matching the roster order. Foreign nationals must provide a valid passport bio page valid for at least six months beyond submission, while local citizens must present a national LTO driver’s license. No JPEG files, password-protected documents, or unauthorized site visits will be accepted, and violations may lead to disqualification. The formal solicitation is expected to be released shortly after the site visit, with a response deadline set for August 6, 2026. Primary point of contact is Artitar Udit, and secondary is Rondel Williams, both via U.S. Navy email addresses.

Navfacsyscom Far East

POSTED

about 11 hours ago

DEADLINE

***SOURCES SOUGHT NOTICE*** U.S. NAVAL HOSPITAL YOKOSUKA ALTERATION PROJECT

Solicitation # N4008427R1027

This notice is a sources sought announcement issued by the Naval Facilities Engineering Systems Command Far East for a major construction project at United States Naval Hospital Yokosuka in Japan, with an estimated value between $100 million and $250 million. The intent is to identify qualified contractors capable of executing a Design-Bid-Build project consisting of three interdependent packages: Package A, which is the base bid involving electrical infrastructure and must be completed before other work begins; and Packages B and C, which are optional and pertain to alterations in Buildings 1400 and 1407 and the operating room renovation respectively, both of which may be exercised and performed concurrently after contract award. The work encompasses comprehensive renovations across multiple critical hospital departments including the Emergency Department, Inpatient Pharmacy, Radiology, Sterile Processing, Surgery Suites, and Laboratory, and requires compliance with Unified Facilities Criteria, NFPA 99, ABA accessibility standards, and DoD antiterrorism requirements. Contractors must be fully licensed to operate in Japan, possess valid permits from Japanese authorities, and comply with all local labor laws and regulations, while not being eligible for U.S. Status of Forces Agreement benefits. The contract will be awarded on a firm-fixed-price basis with performance periods of 578 days for Package A, 1,627 days for Package B, and 986 days for Package C, and must include demolition, reconstruction, hazardous material abatement, mechanical and electrical upgrades, and installation of medical equipment. Interested parties must submit a comprehensive capabilities package via email exclusively, not exceeding 12 single-sided pages, that includes up to five project examples with narrative details and mandatory information such as Unique Entity ID and CAGE code, all submitted no later than 1530 JST on August 10, 2026. No payments or reimbursements are provided for responses, and all submissions are treated as proprietary and non-binding for sourcing and planning purposes only, with no evaluation letters or award notifications issued for this notice.

Navfacsyscom Far East

POSTED

about 11 hours ago

DEADLINE

Repair Building 510 HVAC

Solicitation # FA670326Q0002_1

The contract titled Repair Building 510 HVAC is a special notice issued by the Department of Defense through the 94th Contracting Flight at Dobbins Air Reserve Base in Georgia, with a NAICS code of 238220 indicating it falls under HVAC contracting services. The solicitation number is FA670326Q0002_1, posted on July 29, 2026, with a response deadline of August 12, 2026, at 6:00 PM Eastern Time. Performance of the work is designated for Marietta, Georgia, specifically at the location with ZIP code 30069. The primary point of contact is Kevin Song, reachable at 678-655-3695 or kevin.song@us.af.mil, with Kenneth Jacob listed as the secondary contact at 678-655-5745 or kenneth.jacob.1@us.af.mil. A site visit is required for prospective bidders to fully understand the scope and conditions of the work, and all interested parties must attend to be eligible for consideration. The contract opportunity can be accessed via the provided SAM.gov link for additional submission details and documentation.

FA6703 94TH Contracting Flight Pk

POSTED

about 11 hours ago

DEADLINE

Minor Sprinkler System RepairsThe contract titled Minor Sprinkler System Repairs is a subcontract issued by the SHA05 - Somerville Housing Authority under the NAICS code 238220, focusing on the diagnosis and repair of an existing irrigation or sprinkler system to restore full functionality following recent landscaping activities. The work is to be performed at Memorial Road in Somerville, Massachusetts, with a zip code of 02152, and the contract was posted on July 29, 2026, with a response deadline of August 27, 2026. The scope requires the contractor to assess any damage or disruption caused by landscaping work and implement necessary repairs to ensure the system operates correctly, including but not limited to replacing damaged lines, reprogramming controllers, adjusting head alignment, and verifying water pressure and coverage. All work must meet applicable standards for residential irrigation systems and be completed in a manner that minimizes disruption to residents and property. The solicitation does not specify a set-aside type or point of contact, and responses must be submitted through the provided Commbuys portal link.

SHA05 - Somerville Housing Authority

POSTED

about 18 hours ago

DEADLINE

Abington - Beaver Brook Boiler Replacement

Solicitation # BD-27-1472-SCHLS-SCHLS-131658

The Abington Public School District is soliciting sealed bids for the complete replacement of the boiler system at Beaver Brook Elementary School, with all bid documents available for request via email starting July 29, 2026. The contract, designated as BD-27-1472-SCHLS-SCHLS-131658, requires qualified contractors to furnish and install a new heating system, with submissions due by 3:00 PM on August 19, 2026. Bids must be opened publicly at 10:00 AM on the same day at the Frolio School Building located at 1071 Washington Street in Abington, Massachusetts. All work is to be performed at the school’s location, and the procurement is managed by the Massachusetts School Department under the lead of Purchaser Sarah Gainey. The solicitation is open to all qualified contractors without set-aside restrictions and is issued under a state and local education agency framework. Interested parties can access full details through the official Commbuys portal using the provided link. The project aims to upgrade the school’s infrastructure with an efficient, modern boiler system to ensure consistent heating and safety for students and staff, and all submissions must comply with the specifications outlined in the bid documents requested after July 29, 2026.

SCHLS - Abington School Department

POSTED

about 18 hours ago

DEADLINE

Chiller Replacement at Coolidge Corner Library

Solicitation # BD-25-1250-1560-1560-131732

The contract involves the replacement of a chiller system at the Coolidge Corner Library in Brookline, Massachusetts, solicited under reference number BD-25-1250-1560-1560-131732. Bid documents will be accessible starting July 29, 2026, through the Biddocs portal, with responses due by August 12, 2026, at 9:00 PM Eastern Time. The procurement is managed by the Massachusetts Department of Purchasing, under the SLED classification, and is limited to entities performing work at the specified library location in Brookline with a ZIP code of 02445. Richard Saville is designated as the primary point of contact for this solicitation, and all inquiries should be directed through the provided official channels. The contract type is a standard solicitation without any specified set-aside provisions, and interested parties must access the complete bid details via the CommBuys platform.

1560 - Purchasing

POSTED

about 18 hours ago

DEADLINE

Mechanical Systems InstallationThe contract involves the installation of HVAC, plumbing, and process piping systems in accordance with approved project drawings and all applicable codes and standards. The work is classified under NAICS code 238220 and is structured as a subcontract, indicating it is part of a larger construction or facility project managed by a prime contractor. The opportunity was posted on July 28, 2026, with a response deadline set for September 10, 2026, giving potential bidders approximately six weeks to prepare and submit their proposals. The contracting entity is the State of Utah, though specific location details for the place of performance are not provided, suggesting the work may occur at one or more sites within the state. All installations must comply with current regulatory requirements and technical specifications to ensure system functionality, safety, and code adherence.

POSTED

DEADLINE

in about 1 month