How to bid on the Tinker AFB 2026 Multiple Award Construction Contract (MACC) from DEPT of Defense

What the agency is buying and why a vendor would care

The Department of Defense is seeking contractors for a Multiple Award Construction Contract (MACC) at Tinker Air Force Base in Oklahoma. This contract covers a wide range of general construction services, including sustainment, maintenance, repair, alteration, renovation, and minor construction projects. The work will be complex, requiring multiple construction trades, and may involve engineering design by credentialed professionals.

This opportunity is significant because it is an Indefinite Delivery Indefinite Quantity (IDIQ) contract with a five-year base period and one five-year option period. This structure provides a long-term potential for consistent work. Projects may be executed through Design-Build, Construction with Limited Design, or Construction Only methods, offering flexibility in how contractors can engage with the work. The NAICS code is 236210, Industrial Building Construction, with a small business size standard of $45 million.

Key dates and what happens at the deadline

This Request for Proposal (RFP) was published on September 03, 2026. The proposal due date is September 25, 2026, at 2:00 PM ET. An amended proposal due date is included in the attached documents, so it is crucial to review all attachments for the most current information.

The government was accepting Requests for Information (RFIs) until August 21, 2026, at 3:00 PM EDT. They are still working to answer all RFIs and will continue to evaluate the need to extend the proposal deadline based on the time required to answer all questions and provide those answers to industry. All offerors must be registered in the System for Award Management (SAM) database.

Who this opportunity suits

This opportunity is well-suited for construction firms, particularly small businesses, that specialize in industrial building construction and have experience with a broad range of construction services. Firms capable of handling complex projects involving multiple trades, and those with design-build capabilities or experience with limited design projects, will find this contract a good fit.

Given the small business size standard of $45 million for NAICS code 236210, this MACC is specifically designed to include small business participation. Contractors must be prepared to furnish all materials, labor, plant, tools, transportation, equipment, testing services, quality control, and incidentals necessary for a complete project.

How to respond

To access the solicitation documents, click “View original source” to open the opportunity on the portal. If the first click takes you to the portal’s homepage, click it again to go directly to the bid. You may need a free account to view documents, though this is not always required.

Once you have accessed the documents, carefully review the RFP FA8137-26-R-0040 and all attachments, especially any amendments that update the proposal due date or provide answers to RFIs. Ensure your firm is registered and has current information in the System for Award Management (SAM) database, as failure to do so could make you ineligible for award.

Practical tips for preparing a competitive response

Thoroughly read all sections of the RFP, including any amendments. Pay close attention to Section L, which outlines the instructions for proposal submission, and Section M, which details the evaluation criteria. Understanding these sections is critical for tailoring your response to meet the government's expectations.

Given the nature of this MACC, highlight your firm's experience with similar projects at government facilities, especially those involving sustainment, maintenance, repair, renovation, or minor construction. If you have design-build capabilities or experience with projects where you developed portions of the design, emphasize these strengths. Provide concrete examples and demonstrate your capacity to manage complex projects across multiple trades.

Ensure your SAM registration is active and up-to-date well before the deadline. Any discrepancies or expired registrations can lead to disqualification. Finally, allocate sufficient time for proposal preparation, including internal reviews, to ensure accuracy, completeness, and compliance with all submission requirements.