This Subcontract opportunity from Department Of State was posted on August 31, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Masonry & Concrete Works

Closed

Federal

Submission Closed09/08/2026, 03:00:00 PM UTC

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

Active Opportunities Like This One

NAICS: 238110

New

26_1119 – Robbinsdale-MN

Solicitation # 261119-robbinsdale-mn

Caldwell Tanks, Inc. is seeking subcontractors for a water tank construction project located in Robbinsdale, Minnesota. The solicitation covers several specialized scopes of work, including site work under NAICS 238910, tank painting under NAICS 238320, and electrical work under NAICS 238210. Interested bidders must adhere to specific Disadvantaged Business Enterprise participation targets, with a requirement of 3.5 percent for Minority Business Enterprises and 5.0 percent for Women Business Enterprises. The response deadline for this solicitation is November 17, 2026.

POSTED

DEADLINE

Elbon Tank #2, Schedule 2- Elevated Tank Project

Solicitation # elbon-tank-2-schedule-2-elevated-tank-project

Caldwell Tanks, Inc. is seeking subcontractors for the Elbon Tank #2, Schedule 2 Elevated Tank Project located in Phillip, South Dakota. The project involves several specialized scopes of work, including site work under NAICS 238910, tank painting under NAICS 238320, and electrical work under NAICS 238210. This solicitation is specifically set aside for small businesses, including SAM.gov designated Small Disadvantaged Businesses and Department of Transportation Disadvantaged Business Enterprises. Interested parties must submit their responses by the deadline of November 13, 2026. Primary coordination for this opportunity is managed by Eric Koetter.

POSTED

DEADLINE

Concrete Slab and Footing Installation

POSTED

DEADLINE

ADA Pedestrian Path & Concrete WorkThis subcontract for the Parish of Ascension in Louisiana involves the construction of a new accessible pedestrian route. The scope of work includes pouring and finishing concrete slabs, installing curbs, and constructing sidewalks that connect parking areas to the dock. A primary objective of the project is to ensure that all slopes, widths, and transitions strictly adhere to ADA accessibility requirements to provide a continuous and compliant route. The project falls under NAICS code 238110 and was posted on November 5, 2026. Interested parties must submit their responses by the deadline of December 1, 2026.

POSTED

DEADLINE

Foundation Modification ServicesThis subcontract for Foundation Modification Services, issued by DLA Aviation for the Department of Defense, involves modifying existing concrete foundations for prime contractors at Fleet Readiness Center, Southwest in San Diego. The scope of work includes adjusting concrete slabs to fit new PMB booth footprints and applying industrial sealants to patch and seal building structures against environmental intrusion. All work must be performed in accordance with local building codes and specific facility requirements to ensure the foundations are fully prepared for equipment installation. The project is categorized under NAICS code 238110, with a response deadline set for November 20, 2026.

POSTED

DEADLINE

Concrete and Paver Restoration SubcontractorThis subcontract agreement is for a Concrete and Paver Restoration provider to support prime contractors on municipal projects within the City of Hermosa Beach. The scope of work involves concrete removal and surface restoration, specifically the installation of Portland Cement Concrete, Asphalt Concrete, cobble pavers, and 2'x2'x4" concrete pedestals. All restorations must match existing conditions and strictly adhere to ADA standards for curb ramps and sidewalkers. The project is categorized under NAICS code 238110 and is located in Hermosa Beach, California, zip code 90254. Interested parties must submit their responses by the deadline of December 3, 2026. The final deliverables include fully restored street and sidewalk surfaces along with the completed installation of all specified concrete pedestals.

City of Hermosa Beach

POSTED

DEADLINE

Concrete Flatwork & Curb/Gutter InstallationThis subcontract involves the installation of concrete flatwork and curb and gutter systems for restoration projects within the Citrus Heights Water District. The scope of work includes pouring and finishing approximately 2,000 square feet of flatwork and 200 linear feet of curb and gutter, with all work adhering to The Greenbook standards. Responsibilities extend to saw cutting and grinding to ensure final edges meet project specifications. Qualified contractors must hold a valid California State Contractor License, specifically Class A or C-61/C-8, and maintain strict compliance with Prevailing Wage requirements. The project is located in Citrus Heights, California, and requires the delivery of fully finished concrete systems. Interested parties must submit their responses by November 18, 2026.

Citrus Heights Water District

POSTED

DEADLINE

CSM Building 5N Olympic Pool Replastering Project, College Of San Mateo

Solicitation # 87033

The San Mateo County Community College District is soliciting bids for the CSM Building 5N Olympic Pool Replastering Project in San Mateo, California. This project involves the removal and replacement of swimming pool finishes, 52 lights, main drains, and stainless steel gutter caps. Additional scope includes replacing portions of the pool deck, upgrading an outdoor shower for accessibility, installing detectable warnings, painting loading and non-loading zones, and relocating toilet paper dispensers. All work must comply with Division of State Architect approval and various regulatory standards, including the California Plumbing and Building Codes. The contract will be awarded to the Apparent Low Bidder based on the total amount of all bid items and alternates. Bidders must submit their proposals electronically via the PlanetBids portal by January 7, 2027. Required submission documents include a statement of bidder qualifications, a list of three similar recent projects, a surety letter confirming bondability, and various certifications regarding non-discrimination, prevailing wage compliance, and the Iran Contracting Act. The successful contractor will be required to provide a 10 percent bid security, as well as performance and payment bonds, and will operate under an Owner Controlled Insurance Program. Performance requires the submission of a preliminary baseline schedule within 14 calendar days of the Notice to Proceed, with no single activity exceeding a 21-day duration. Quality assurance involves inspections by the District and the Division of State Architect, with materials required to meet ASTM or ASHRAE standards. Payment will be made via progress payments within 30 days of receipt of undisputed applications in a format similar to AIA forms G702 and G703.

San Mateo County Community College District

POSTED

DEADLINE

Untreated Base Course Supply and PlacementThis subcontract for the City of Encinitas involves the supply and installation of 300 tons of untreated base material for pavement rehabilitation projects. The selected contractor is responsible for the hauling, spreading, and compaction of the aggregate to specific depths and densities, utilizing compaction rollers to ensure compliance with 2024 Greenbook and 2023 Caltrans specifications. The project is located in Encinitas, California, under NAICS code 238110. Interested parties must submit their responses by the deadline of November 23, 2026.

POSTED

DEADLINE

Concrete Curb, Gutter, and ADA Ramp InstallationThis subcontract involves the installation of concrete curbs, gutters, and ADA-compliant ramps for prime contractors working on City of Walnut Creek infrastructure projects. The scope of work includes sawcutting and removing existing concrete, constructing Case C and Case G curb ramps according to Detail CC-7, and installing dark grey cast-in-place detectable warning surfaces. Additionally, the contractor is responsible for doweling new concrete to existing sidewalks as specified in Detail CC-5 to ensure the delivery of fully compliant infrastructure. The project is located in Walnut Creek, California, under NAICS code 238110. Interested parties must submit their responses by the deadline of November 23, 2026.

POSTED

DEADLINE

Concrete & Structural WorkThis subcontract for Concrete and Structural Work involves the construction of structural foundations for prime contractors on City Hall facility projects in Rosemead, California. The scope of work specifically includes the building of a new elevator pit and enclosure, along with concrete paving repairs covering approximately 200 square feet. All work must be executed in strict accordance with structural engineering plans and concrete strength specifications to ensure a fully restored paving area and a completed elevator structure. The project is managed by the City of Rosemead under NAICS code 238110. Interested parties must submit their responses by the deadline of December 16, 2026. The contract was officially posted on November 5, 2026, and focuses on delivering critical infrastructure improvements to the municipal facility.

POSTED

DEADLINE

ADA Accessible Walkway and Paving InstallationThis subcontract for the City of Maywood involves the demolition and installation of ADA accessible walkways and paving. The scope of work requires the contractor to perform 285 linear feet of sawcutting, the removal of 311 square feet of concrete and 540 square feet of asphalt, and the subsequent installation of new paths. All work must be completed using professional demolition equipment and adhere strictly to the 2010 ADA Standards and the 2025 California Building Code. The project is located in Maywood, California, under NAICS code 238110. Interested parties must submit their responses by the deadline of December 4, 2026. The primary objective is to deliver fully compliant accessible concrete paths as a subcontractor to prime contractors managing these city accessibility projects.

City of Maywood

POSTED

about 10 hours ago

DEADLINE

in 29 days

AI Contract Overview

This subcontracting opportunity involves masonry and concrete installation services for facility projects at the U.S. Embassy in Harare, managed by the Department of State. The scope of work includes the construction of masonry walls, the extension of a cabana staircase by four steps, and the installation of a reinforced concrete slab measuring 2000mm by 15000mm for a footpath, which requires the use of construction mesh and tiles. The successful contractor will be responsible for the complete delivery of these masonry walls, the extended staircase, and the finished tiled concrete footpath. The solicitation is classified under NAICS code 238110 and is scheduled to be posted on August 31, 2026, with a response deadline of September 8, 2026. All work is to be performed on-site in Harare. Interested parties should note the specific technical requirements for reinforced concrete and masonry to ensure compliance with the embassy's facility standards.

General Info

Masonry and concrete installation for US Embassy Harare facility projects by September 2026.

Agency

Department Of State → US Embassy Harare

NAICS

238110 - Poured Concrete Foundation and Structure Contractors

Place of Performance

Harare, DC, ZWE

Set-Aside

NONE

Documents

This scope was carved out of PR16238300.

The full solicitation package (1 document), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

Backfilling Swimming Pool and Associated Works at U.S. Embassy residence in Harare, Zimbabwe

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Timeline

PhaseClosed

PostedAug 31

subcontract

Response DeadlineSep 8

Deadline has passed

Submission Closed

09/08/2026, 03:00:00 PM UTC

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Organization & Contact Information

AgencyDepartment Of State → US Embassy Harare

ContactsNo contacts available

OfficeN/A

Organization / AgencyDepartment Of State → US Embassy Harare

Office AddressN/A

ContactsNo contact information available

Full Description

Performs masonry and concrete installation for prime contractors on U.S. Embassy Harare facility projects. Constructs masonry walls, extends cabana staircase by four steps, and installs a 2000mm x 15000mm reinforced concrete slab for a footpath using construction mesh and tiles. Delivers completed masonry walls, extended staircase, and tiled concrete footpath.