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WELCH CONSTRUCTION INC. MARCELLUS 13108

UEI: SLED_AC5369E8BEB3E35C

WELCH CONSTRUCTION INC. MARCELLUS 13108 is a federal contractor, registered under UEI SLED_AC5369E8BEB3E35C. It has been awarded $33,745,260 across 10 federal contracts. Primary work spans Commercial and Institutional Building Construction, Plumbing, Heating, and Air-Conditioning Contractors, and Masonry Contractors. Top awarding agencies include 242-NETWORK Contract Office 02 (36C242).

Contact Information

Registration and classification details

Registration

UEI Code

SLED_AC5369E8BEB3E35C

Federal Contracting Overview

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

Key Performance Metrics

Awards Count

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All time

Active

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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

242-NETWORK Contract Office 02 (36C242)$33.7M100%

Awards by NAICS

236220 - Commercial and Institutional Building Construction$20.4M60.3%

238220 - Plumbing, Heating, and Air-Conditioning Contractors$11.1M32.8%

238140 - Masonry Contractors$2.3M6.9%

Awards by Agency Over Time

Awards by Place of Performance

Open opportunities in WELCH CONSTRUCTION INC. MARCELLUS 13108's top NAICS codes and agencies

Fire Protection System InstallationThe Defense Logistics Agency within the Department of Defense has issued a subcontract for the installation of fire protection systems. This project involves the comprehensive setup of fire sprinkler systems, specifically including the installation of piping, heads, alarms, and risers. The contract is categorized under NAICS code 238220 and was posted on August 17, 2026. Further administrative details and award records can be accessed through the DIBBS portal under contract number SPE4A726D0044.

Defense Logistics Agency

POSTED

DEADLINE

HVAC System InstallationThe Defense Logistics Agency, under the Department of Defense, has issued a subcontract for the installation of comprehensive heating, ventilation, and air conditioning systems. This project encompasses the installation of units, controls, and all necessary ductwork, falling under the NAICS code 238220 for plumbing, heating, and air-conditioning contractual work. The contract was posted on August 17, 2026. Further administrative details and award records are managed through the DIBBS portal under contract number SPE4A726D0044.

Defense Logistics Agency

POSTED

DEADLINE

Plumbing and Piping Systems InstallationThis subcontract, titled Plumbing and Piping Systems Installation, is issued by the Defense Logistics Agency under the Department of Defense. The scope of work involves the installation of potable water, storm, and sanitary piping systems, as well as the associated drainage and fixtures. The project is categorized under NAICS code 238220 and was posted on August 17, 2026. Further administrative details and award records can be accessed through the DIBBS portal using the provided contract link.

Defense Logistics Agency

POSTED

DEADLINE

Plumbing and Piping Systems InstallationThis subcontract, titled Plumbing and Piping Systems Installation, is issued by the Defense Logistics Agency under the Department of Defense. The scope of work involves the installation of potable water, sanitary sewer, and HVAC piping systems specifically for commercial or industrial facilities. The contract is categorized under NAICS code 238220 and was posted on August 17, 2026. Further administrative details and award records can be accessed through the DIBBS portal using the provided unique identifier.

Defense Logistics Agency

POSTED

DEADLINE

Plumbing and Piping Systems InstallationThe Plumbing and Piping Systems Installation subcontract, issued by the ASC Commodities Division of the Department of Defense, involves the installation of water supply, storm, and sanitary piping systems, as well as the associated drainage and fixtures. This project is categorized under NAICS code 238220 and will be performed at Tinker AFB, zip code 73145-8000. The solicitation was posted on August 17, 2026, with a response deadline of August 25, 2026. Interested parties can find further details and submission requirements through the provided DIBBS link.

ASC COMMODITIES DIVISION

POSTED

DEADLINE

Plumbing and Piping Systems InstallationThis subcontract, titled Plumbing and Piping Systems Installation, is issued by the Defense Logistics Agency under the Department of Defense. The scope of work involves the installation of critical building infrastructure, specifically focusing on water supply, drainage, and gas piping systems. The project is categorized under NAICS code 238220 and was posted on August 17, 2026. Further administrative details and award records are managed through the DIBBS procurement system.

Defense Logistics Agency

POSTED

DEADLINE

Plumbing and Piping Systems InstallationThis subcontract for Plumbing and Piping Systems Installation is issued by the Defense Logistics Agency under the Department of Defense. The scope of work involves the installation of potable water, waste, vent, and gas piping systems, which specifically includes the necessary fixtures and rough-in work. The project is categorized under NAICS code 238220 and was posted on August 17, 2026. Further administrative details and award records are managed through the DIBBS portal under contract number SPE7L126P99P6.

Defense Logistics Agency

POSTED

DEADLINE

Cryogenic Equipment Installation ServicesThis subcontract with the Defense Logistics Agency under the Department of Defense involves the installation and commissioning of cryogenic equipment at government facilities. The scope of work includes the comprehensive setup and inspection of the equipment upon delivery to ensure operational readiness. The project is categorized under NAICS code 238220 and was posted on August 17, 2026. This engagement focuses on specialized technical services required to implement cryogenic systems within designated defense infrastructure.

Defense Logistics Agency

POSTED

DEADLINE

Plumbing and Piping Systems InstallationThe Defense Logistics Agency, under the Department of Defense, has issued a subcontract for the installation and testing of plumbing, drainage, and water supply systems for buildings or facilities. This project falls under NAICS code 238220 and is identified by the title Plumbing and Piping Systems Installation. The contract was posted on August 17, 2026. Further details regarding the award and specific performance requirements can be accessed through the DIBBS portal under contract number SPE60525D1252.

Defense Logistics Agency

POSTED

DEADLINE

Backflow Prevention Assembly Testing and MaintenanceThis subcontract opportunity with the Texas Health and Human Services Commission involves the annual inspection, testing, and maintenance of backflow prevention assemblies. The primary objective is to ensure all assemblies remain in compliance with 30 TAC §290.44(h) and established public health standards. The project falls under NAICS code 238220 and was posted on August 17, 2026. Interested parties must submit their responses by the deadline of September 8, 2026, at 4:30 PM. Further details and submission guidelines can be accessed through the Texas SmartBuy portal.

Health and Human Services Commission

POSTED

DEADLINE

Routine and Emergency Irrigation System RepairsThe Health and Human Services Commission of Texas is seeking a subcontractor for routine and emergency irrigation system repairs. The scope of work includes performing preventive maintenance, system diagnostics, component replacements, and leak repairs, with a strict requirement for a four-hour response time for emergency calls. This opportunity is listed under NAICS code 238220 and was posted on August 17, 2026. Interested parties must submit their responses by the deadline of September 8, 2026, at 4:30 PM. Further details can be found through the Texas SmartBuy portal.

Health and Human Services Commission

POSTED

DEADLINE

New Hangar Facility ConstructionThe Athens-Clarke County Government in Georgia is seeking a subcontractor for the full construction of a new aircraft hangar facility. This project encompasses the complete installation of structural, electrical, and mechanical systems, with a strict requirement for all work to be compliant with FAA regulations and local building codes. The solicitation was posted on August 17, 2026, and requires a response by September 21, 2026, at 3:00 PM. Classified under NAICS code 236220, this subcontracting opportunity is managed through the state of Georgia's procurement system.

Athens-clarke County Government

POSTED

DEADLINE

in about 1 month

HVAC Compressor Replacement – Mechanical InstallationThis subcontract opportunity with the San Diego Job Corps Center involves the full replacement of a failed rooftop HVAC compressor unit at Building 181. The scope of work includes the removal of the old unit, installation of the new compressor, professional refrigerant handling, electrical reconnection, and comprehensive performance testing to ensure operational efficiency. The project is categorized under NAICS code 238220 and is designated as a small business set-aside, open to SDB, WOSB, HUBZone, VOSB, and SDVOSB certified entities. The solicitation was posted on August 17, 2026, with a response deadline of September 11, 2026.

San Diego Job Corps Center

POSTED

DEADLINE

Dry Fire Sprinkler System Trip TestingThis subcontract opportunity with the Earle C. Clements Job Corps Center involves conducting trip testing on six dry fire sprinkler systems. The scope of work includes testing dry pipe valves and alarm mechanisms under low-temperature conditions in accordance with NFPA 25 standards. The project is categorized under NAICS code 238220 and is set aside for various small business designations, including Small Disadvantaged, Women-Owned, HUBZone, and Veteran-Owned small businesses. The solicitation was posted on August 17, 2026, with a response deadline of September 9, 2026.

Earle C. Clements Job Corps Center

POSTED

DEADLINE

Wet Fire Sprinkler System Inspection and TestingThis subcontract opportunity with the Earle C. Clements Job Corps Center involves the inspection and testing of approximately 18 wet fire sprinkler systems. The scope of work includes performing riser valve testing and conducting visual checks to ensure full compliance with NFPA 25 standards. The project is designated as a set-aside for various small business categories, including Small Disadvantaged Businesses, Women-Owned Small Businesses, HUBZone, and Veteran-Owned Small Businesses. Interested parties must submit their responses by September 9, 2026, under NAICS code 238220.

Earle C. Clements Job Corps Center

POSTED

DEADLINE

HVAC System Replacement InstallationThe HVAC System Replacement Installation subcontract for the San Diego Job Corps Center involves the full removal and replacement of existing HVAC systems. The scope of work includes the installation of new units, ductwork, and controls, as well as comprehensive testing. The selected contractor is responsible for providing all necessary labor, materials, and equipment while ensuring full compliance with federal labor and safety standards. This opportunity is designated as an SBA set-aside, open to various small business categories including Small Disadvantaged, Women-Owned, HUBZone, and Veteran-Owned small businesses. The project falls under NAICS code 238220. Interested parties must submit their responses by the deadline of September 11, 2026.

San Diego Job Corps Center

POSTED

DEADLINE

CBP5933 Bldg. 225 HVAC Replacement

Solicitation # cbp5933-bldg-225-hvac-replacement

Management & Training Corporation is seeking bids for a subcontracting opportunity to provide HVAC replacement services for Building 225 at the San Diego Job Corps Center located in Imperial Beach, California. This solicitation is open to various small business designations, including Small Disadvantaged, Women-Owned, HUBZone, and Veteran-Owned small businesses. Interested parties must submit their responses by September 11, 2026. The project falls under NAICS code 238220, and the primary point of contact for this requirement is Tom Williams.

San Diego Job Corps Center

POSTED

DEADLINE

RFO AWP-1072, IIJA: ZUA CCF Environmental Wing and Underground Utilities, Hagatna, GU

Solicitation # rfo-awp-1072-iija-zua-ccf-environmental-wing-underground-utilities-hagatna-gu

This project involves the construction of a new Environmental Wing building extension and underground utility improvements in Hagatna, Guam. The scope of work encompasses the demolition of existing structures as well as comprehensive electrical and HVAC upgrades for the entire building. With a construction magnitude exceeding 10 million dollars, the project is categorized under NAICS codes 236220, 236210, 237990, and 238110. The solicitation is managed by PTSI Managed Services, Inc. and is set aside for various small business categories, including SDB, WOSB, HUBZone, and SDVOSB firms. Interested parties must respond by August 27, 2026. Inquiries and expressions of interest should be directed to the primary point of contact, Anna Ma.

PTSI Managed Services, Inc.

POSTED

DEADLINE