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CORNERSTONE CONSTRUCTION SERVICES, LLC Woburn MA USA

UEI: SLED_1795FA4B320AEE32

CORNERSTONE CONSTRUCTION SERVICES, LLC Woburn MA USA is a federal contractor, registered under UEI SLED_1795FA4B320AEE32. It has been awarded $2,770,624 across 2 federal contracts. Primary work spans Plumbing, Heating, and Air-Conditioning Contractors and All Other Specialty Trade Contractors. Top awarding agencies include Pbs R1 Acq Management Division.

Contact Information

Registration and classification details

Registration

UEI Code

SLED_1795FA4B320AEE32

Federal Contracting Overview

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

Key Performance Metrics

Awards Count

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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

Pbs R1 Acq Management Division$2.8M100%

Awards by NAICS

238220 - Plumbing, Heating, and Air-Conditioning Contractors$2.3M82.3%

238990 - All Other Specialty Trade Contractors$491.4K17.7%

Awards by Agency Over Time

Awards by Place of Performance

Open opportunities in CORNERSTONE CONSTRUCTION SERVICES, LLC Woburn MA USA's top NAICS codes and agencies

Infrastructure - Invitation to Bid - Spence Steam regulator replacement

Solicitation # AB-2026-05515

Alberta Infrastructure is seeking bids for the supply and installation of two new Spence steam regulators through solicitation AB-2026-05515, managed by BGIS. The project involves replacing existing steam regulators at a location in Alberta, with all work to be performed on-site. The solicitation was posted on August 5, 2026, and responses are due by August 26, 2026, at 8:00 PM Mountain Time. Kelly Wambold, Operations Manager at BGIS, is the primary point of contact for inquiries, reachable via email at kelly.wambold@bgis.com. The contract requires qualified vendors to provide compliant equipment and skilled installation services meeting provincial infrastructure standards. Bidders must ensure all technical, safety, and scheduling requirements are met to successfully execute the replacement in a timely and regulatory-compliant manner.

POSTED

about 8 hours ago

DEADLINE

Northern Alberta Institute of Technology (NAIT) - Invitation to Bid - D. Building Domestic Hot Water Heater Replacement

Solicitation # AB-2026-05513

The Northern Alberta Institute of Technology is seeking bids for the replacement of domestic hot water heaters in its D Building, under solicitation number AB-2026-05513, with bids due by August 18, 2026. The project requires a qualified mechanical contractor to remove existing equipment and install new domestic hot water heating systems, ensuring compliance with all relevant codes and operational standards. Work must be conducted with minimal disruption to campus activities, and the contractor is expected to manage all logistics, permitting, and site cleanup. The contract is open to all qualified bidders without set-aside restrictions, and all submissions must be received by the deadline. Primary point of contact for inquiries is Marek Holpit, Senior Supply Chain Strategic Consultant, reachable via email at marekh@nait.ca or phone at 780-378-2887. The project is located at NAIT’s campus in Alberta, and detailed technical specifications and bid requirements can be accessed through the official solicitation portal. Bidders are advised to review all documentation thoroughly to ensure full compliance with the scope of work and submission guidelines.

Northern Alberta Institute of Technology

POSTED

about 8 hours ago

DEADLINE

Plumbing and Piping Systems InstallationThe contract pertains to the installation of comprehensive plumbing and piping systems encompassing water supply, drainage, and sanitary piping across facilities at Tinker Air Force Base, with a zip code of 73145-8000. This is a subcontract under NAICS code 238220, issued by the Department of Defense under the agency name CONSTRUCTION & EQUIPMENT MRO SVC I. The solicitation was posted on August 5, 2026, and bids must be submitted by August 17, 2026, with no set-aside provisions designated. The work is focused on ensuring functional, code-compliant plumbing infrastructure for defense-related operations, and all responses must adhere to the technical and logistical requirements specified in the solicitation document accessible via the provided DIBBS link.

CONSTRUCTION & EQUIPMENT MRO SVC I

POSTED

about 9 hours ago

DEADLINE

Plumbing and Piping Systems Installation

ASC COMMODITIES DIVISION

POSTED

about 9 hours ago

DEADLINE

Plumbing and Piping SystemsThe contract is for the installation of potable water, sanitary sewer, and storm drainage systems within buildings or facilities under a subcontract arrangement set aside entirely for small businesses as defined by the SBA. It falls under NAICS code 238220 for plumbing, heating, and air-conditioning contractors and is managed by the Nuclear Reactor Program within the Department of Defense. The opportunity was posted on August 5, 2026, with responses due by August 14, 2026, and performance is required at a location in San Diego, California with a zip code of 92136-3581. All work must comply with applicable standards for municipal infrastructure systems and is intended to support critical defense facilities. The solicitation is accessible through the DIBBS platform for eligible small business contractors.

NUCLEAR REACTOR PROGRAM

POSTED

about 9 hours ago

DEADLINE

Plumbing and Piping SystemsThe contract pertains to the installation of potable water, drainage, and gas piping systems within commercial or industrial facilities, under a subcontract classification with NAICS code 238220 for plumbing, heating, and air-conditioning contractors. The work is scoped for performance at Cherry Point, North Carolina, with a zip code of 28533-0021, and is managed by the Defense Logistics Agency under the Department of Defense. The solicitation was posted on August 5, 2026, with a firm response deadline of August 13, 2026, leaving a limited window for potential subcontractors to submit proposals. All systems must meet stringent operational and safety standards appropriate for defense-related infrastructure, and the successful bidder will be responsible for full compliance with applicable codes and regulations governing utility installation in federal facilities.

Defense Logistics Agency

POSTED

about 9 hours ago

DEADLINE

HVAC System Installation

DLA DIST SAN JOAQUIN

POSTED

about 9 hours ago

DEADLINE

Plumbing and Piping Systems Installation

DLA DIST SAN JOAQUIN

POSTED

about 9 hours ago

DEADLINE

Site Preparation and Grading

DLA DIST SAN JOAQUIN

POSTED

about 9 hours ago

DEADLINE

Plumbing and Piping SystemsThe contract involves the installation of plumbing, water supply, drainage, and HVAC piping systems under a subcontract for the Department of Defense, with the work to be performed in Tracy, California, at the ZIP code 95304-5000. The solicitation, identified by the NAICS code 238220 for plumbing, heating, and air-conditioning contractors, was posted on August 5, 2026, and responses are due by August 17, 2026. The contracting agency is listed as CONSTRUCTION & EQUIPMENT MANU & CON, indicating the project supports defense infrastructure needs. There is no specified set-aside type, and no point of contact is provided in the data, but the official solicitation details can be accessed through the provided DIBBS link. All work must comply with applicable technical and performance standards for military facility construction.

CONSTRUCTION & EQUIPMENT MANU & CON

POSTED

about 9 hours ago

DEADLINE

Plumbing and Piping Systems InstallationThe contract titled Plumbing and Piping Systems Installation seeks qualified subcontractors to install comprehensive plumbing systems encompassing water supply, drainage, and gas piping across various buildings and facilities under the jurisdiction of the Department of Defense through its Land Supply Chain office. The work falls under NAICS code 238220 and is classified as a subcontract opportunity with no specific set-aside provisions, indicating open competition among eligible contractors. The solicitation was posted on August 5, 2026, and responses are due by August 25, 2026, providing potential bidders a 20-day window to prepare and submit their proposals. The place of performance is not specified, suggesting work may occur at multiple DoD locations, and no point of contact is listed, requiring interested parties to refer to the provided DIBBS link for additional details and submission requirements.

LAND SUPPLY CHAIN

POSTED

about 9 hours ago

DEADLINE

HVAC System InstallationThe contract involves the installation of heating, ventilation, and air conditioning systems, including all necessary ductwork, units, and controls, with the place of performance located at Fort Benning, Georgia, 31905. It is classified as a subcontract under NAICS code 238220, which corresponds to HVAC installation services, and is issued by the Department of Defense under the agency name CONSTRUCTION & EQUIPMENT CONTAINERS. The solicitation was posted on August 5, 2026, with a deadline for responses set for August 17, 2026. No set-aside type is specified, and no point of contact is provided. The full details and submission instructions can be accessed through the DIBBS portal using the provided link.

CONSTRUCTION & EQUIPMENT CONTAINERS

POSTED

about 9 hours ago

DEADLINE

Plumbing and Piping Systems InstallationThe contract entails the installation of sanitary, storm, and potable water piping systems along with associated fixtures and drainage infrastructure, targeting a military installation at Fort Benning, Georgia, with a ZIP code of 31905. This subcontract falls under the NAICS code 238220 for Plumbing, Heating, and Air-Conditioning Contractors and is being managed by the Department of Defense through its organization, Construction & Equipment Containers. The solicitation was posted on August 5, 2026, with a response deadline set for August 17, 2026, indicating a narrow window for interested parties to submit proposals. All work must be performed at the designated location, and the scope covers comprehensive plumbing systems essential to facility operations, requiring adherence to technical standards for potable water safety, wastewater handling, and stormwater management. Proposals should reflect expertise in large-scale infrastructure installation, particularly within defense-related environments, with no set-aside provisions specified for small or disadvantaged businesses. The official solicitation can be accessed through the DIBBS portal using the provided link.

CONSTRUCTION & EQUIPMENT CONTAINERS

POSTED

about 9 hours ago

DEADLINE

ESJC – FIRE EXTINGUISHER SERVICES

Solicitation # esjc-fire-extinguisher-services

This solicitation seeks qualified subcontractors to provide quarterly fire extinguisher inspection and replacement services at the Excelsior Springs Job Corps Center in Missouri, encompassing a total of 175 extinguishers across 21 campus buildings and 23 center-owned vehicles. The work requires detailed inspections four times annually, with the contractor responsible for replacing any used, partially used, or uncharged extinguishers with fully charged units, and providing inspection tags for each device. All services must comply with NFPA 101 Life Safety Code, the National Electrical Code, and applicable OSHA regulations, while adhering to all local, state, and federal construction codes. The contract term runs from October 1, 2026, through September 30, 2027, with performance subject to final acceptance by the center, requiring submission of signed punch lists, warranties, and guarantees before payment. Bidders must submit a completed Fee-For-Service Bid Sheet with a detailed cost breakdown, proof of Missouri-specific licensing, vendor paperwork including Form W-9, Vendor Acknowledgement Form, FFATA Notice, and Anti-Lobbying Certification, along with certificates of insurance covering automobile, liability, and workers compensation. Payment will be issued within 30 days of invoicing, and all deliverables are F.O.B. destination. The procurement is designated as a subcontracting opportunity under a Small Business set-aside that includes eligibility for Small Business, Small Disadvantaged Business, Women-Owned Small Business, HUBZone Small Business, Veteran-Owned Small Business, and Service-Disabled Veteran-Owned Small Business concerns. Compliance with federal labor standards is mandatory, including the Service Contract Act, minimum wage requirements under Executive Order 14026, and the Davis-Bacon Act, with additional requirements for debarment certification, anti-lobbying compliance, and active SAM.gov registration with a Unique Entity ID. Bidders must conduct a site visit, submit proposals in ink or typewritten format with no erasures, and ensure all documents are received by 12 p.m. CST on August 14, 2026. The award will be based on best overall value, not lowest price, with the contracting officer serving as the sole judge of technical merit, compliance, and responsiveness. Contractors and personnel are strictly prohibited from fraternizing with students or staff and from bringing alcohol, tobacco products, drugs, or firearms onto the center premises.

ETR/Excelsior Springs Job Corps

POSTED

about 10 hours ago

DEADLINE

IE JCC HVAC Replacements

Solicitation # ie-jcc-hvac-replacements

This contract is a fixed-price, lump-sum subcontracting opportunity issued by Management & Training Corporation (MTC) on behalf of the U.S. Department of Labor for HVAC replacements at the Inland Empire Job Corps Center in San Bernardino, California. The scope includes furnishing and installing three new packaged HVAC units with gas heating, removing and disposing of existing units in compliance with EPA refrigerant recovery regulations, reconnecting and modifying gas piping and ductwork, installing new electrical disconnects and programmable thermostats, and performing comprehensive startup, testing, and commissioning that verifies critical safety functions such as the automatic closure of fresh air intake dampers during fire activation. All work must adhere to Title 24, the 2024 International Mechanical Code, the 2024 International Energy Conservation Code, and ASHRAE 90.1-2022 standards. Deliverables include manufacturer and workmanship warranties, operation and maintenance manuals, test records, disposal documentation, and completion of at least two hours of on-site training for facility personnel. The contract requires a 100-day consecutive business day performance period following receipt of a Notice to Proceed, with an onsite pre-construction meeting mandatory prior to work commencement. The solicitation is set aside exclusively for small business concerns under multiple SBA categories including Small Business, Small Disadvantaged Business, Women-Owned Small Business, HUBZone, Veteran-Owned Small Business, and Service-Disabled Veteran-Owned Small Business. Bidders must hold a valid UEI number, provide Tax ID and DUNS number, and formally represent their business classification per NAICS code 238220. All contractors and first-tier subcontractors exceeding $30,000 must disclose debarment status, and all offerors must certify they are not suspended or debarred by any federal agency. Bid requirements include a detailed cost breakdown covering materials, labor with apprenticeship documentation, equipment, permits, bonds, overhead, and profit; a signed MTC bid form; supplier packet with W-9 and terms acceptance; and mandatory site visit verification. For bids $25,000 or more, a 20% bid bond and subsequent performance and payment bonds at 100% of contract value are required, with sureties holding at least an A rating. Insurance mandates include $1 million per occurrence general liability with MTC/DOL as additional insured, $1 million auto, and $500,000 workers’ compensation. Weekly

MTC Inland Empire Job Corps

POSTED

about 10 hours ago

DEADLINE

Boiler replacement in IOOF and Administration

Solicitation # boiler-replacement-ioof-administration

The contract seeks a licensed HVAC contractor to replace three boilers across two buildings at the Flint Hills Job Corps Center in Manhattan, Kansas—specifically, two existing Peerless gas-fired boilers in Building 1 (IOOF) and a new high-efficiency gas-fired boiler in Building 2 (Administrative/Academic). The project requires installation of boilers meeting specified output and efficiency standards: 1,680,000 B.T.U. input and 1,344,000 B.T.U. output for the IOOF boilers, and a 94% Energy Star-efficient 600,000 B.T.U. input unit for the administrative building, along with full commissioning of the boiler control systems by a qualified agent. All work must comply with the latest editions of NEC, NFPA-72, NFPA 101, IBC, IMC, IPC, IECC, and IFGC standards, as well as Kansas state codes. Environmental and safety regulations under EPA 40CFR761, 40 CFR 61 subpart m, and OSHA 29CFR1926 must be strictly followed, and the contractor is responsible for securing all necessary local permits and maintaining current licensing. The work is governed by strict performance timelines, with a Notice to Proceed triggering a mandatory start within 14 days and total completion—including punch list items—required within 120 calendar days. Substantial completion is targeted at 60 days after notice to proceed, followed by a 30-day close-out phase, and the contractor must provide written notice at least seven days in advance to schedule a walk-through for substantial completion certification. Final acceptance requires submission of inspection reports, test results, warranties, commissioning documentation, O&M manuals, manufacturer start-up checklists, and third-party water test results. Pricing is to be submitted in a detailed format breaking down labor hours, materials, and total costs, with award determined solely on price and price-related factors after a material compliance pass/fail gate. The contractor must provide a W-9 and DUNS# with the proposal, carry liability insurance naming the Center as both certificate holder and additional insured, and adhere to strict conduct rules prohibiting fraternization, alcohol, drugs, firearms, and use of center food services. Warranties include ten years for boiler heat exchangers, two years for all other parts, one year for workmanship, and a one-year preventive maintenance agreement

Serrato Corporation DBA Flint Hills Job Corps

POSTED

about 10 hours ago

DEADLINE

Keystone Lincoln Dorm Water Heater Repair

Solicitation # keystone-lincoln-dorm-water-heater-repair

The contract involves the repair of a hot water heater located at the Keystone Job Corps Center in Drums, Pennsylvania, specifically within the Lincoln dormitory. The equipment to be serviced is an AquaPlex Turbopower 96 model #100L400A-TPX with serial number F008076, and the repair must include replacements or servicing of key components such as the blower motor assembly, gas valve, hot surface ignitor, ignitor gasket, and electrode flame rod. The work is subject to Davis Bacon wage requirements, mandating payment of prevailing local wages and the submission of certified payroll records. All offerors must be currently registered and active in Sam.gov to be eligible. Bidders are required to clearly separate labor and material costs in their proposals, though no pricing schedule, contract value, or cost ceiling is provided. The solicitation is set aside exclusively for small businesses, including Small Disadvantaged Businesses, Women-Owned Small Businesses, HUBZone Small Businesses, Veteran-Owned Small Businesses, and Service-Disabled Veteran-Owned Small Businesses, under NAICS code 238220 for plumbing and heating contractors. The place of performance is confirmed as Keystone Job Corps, Drums, PA, but the period of performance, delivery schedule, FOB terms, and evaluation criteria for award remain unspecified. No formal attachments, packaging requirements, inspection procedures, or detailed submission instructions beyond cost separation and Sam.gov registration are included in the documentation. The primary point of contact for inquiries is Jennie Drumheller, reachable via phone or email provided in the solicitation, with responses due by August 14, 2026.

Adams & Associates Keystone Red Rock Job Corps

POSTED

about 10 hours ago

DEADLINE

PCJCC HVAC Replacement Bldg Two

Solicitation # PCJCC-HVAC Replacement Bldg Two

This subcontracting opportunity, issued by Exceed Corporation LLC on behalf of the Pinellas County Job Corps Center in St. Petersburg, Florida, seeks licensed HVAC contractors to replace two outdoor condenser units—one 20-ton and one 15-ton—at Building Two of the facility located at 500 22nd Street South, FL 33712. The scope of work includes the full removal of existing condensing units CU-2-1 and CU-2-2, along with their entire refrigerant line-sets, and the recovery of R-22 refrigerant for proper recycling or offsite disposal in compliance with EPA and ASHRAE 15 guidelines. New commercial-grade split condensing units must be installed using non-ozone-depleting A2L refrigerants such as R-32 or R-454B, meeting the latest Energy Star and Federal Energy Management Product (FEMP) requirements. Additional tasks include replacing the DX cooling coil in the VAV Air Handling Unit AHU-2-2, installing new insulated refrigerant line-sets, filter dryers, refrigerant accumulators, sight glasses, thermostatic expansion valves, and NEMA 3R electrical disconnects with proper conduit and wiring. Contractors must also verify or install duct-mounted smoke detectors in accordance with NEC, NFPA 90A, and NFPA 72 standards. All work must adhere to the latest IMC, IPC, SMACNA, and NEC codes, as well as manufacturer installation specifications. Bidders are required to complete a site visit prior to submitting proposals and must provide a minimum five-year compressor warranty and a one-year parts and labor warranty. Proposals must be complete, covering installation, removal, and all ancillary costs, and must be submitted by 5 p.m. on August 7, 2026, with late submissions disqualified. The solicitation is set aside for small business concerns including small disadvantaged businesses, women-owned small businesses, HUBZone small businesses, veteran-owned small businesses, and service-disabled veteran-owned small businesses. All respondents must be EEO compliant, and inquiries should be directed to Angelia Richardson, Finance & Administration Director, at the provided contact information.

Exceed, LLC dba Pinellas County Job Corps Center

POSTED

about 10 hours ago

DEADLINE