NASA Johnson Space Center Multiple Award Construction Contract (JMACC) 80JSC026R0008

This notice is for informational purposes only and does not constitute a solicitation. No proposals are being requested at this time. No response is required at this stage. Monitor SAM.gov for official solicitation release. Description NASA Johnson Space Center (JSC) intends to issue a Request for Proposal (RFP) for the Johnson Space Center Multiple Award Construction Contract (JMACC). This acquisition will establish a Multiple Award, Firm-Fixed-Price (FFP), Indefinite Delivery/Indefinite Quantity (IDIQ) contract vehicle to support a broad range of construction-related services at JSC and the White Sands Test Facility (WSTF). These efforts are funded under the Big Beautiful Bill Act (H.R.1, Public Law No: 119-21), which provided JSC with $300 million specifically for center infrastructure improvements. The JMACC will provide rapid and flexible execution of construction, revitalization, recapitalization, and infrastructure improvement projects. The scope of work under the JMACC includes, but is not limited to: General construction Alteration, modification, and renovation of existing facilities Maintenance and repair of buildings and infrastructure Demolition of structures and facilities Design-build services New construction of buildings, facilities, and real property Contract Information Type: Multiple Award IDIQ (May award fewer or more than four (4) IDIQ contracts if it is in the Government s best interest.) Estimated Ordering Value: Minimum $5,000 Maximum $300,000,000 Set-Aside: N/A - Unrestricted Full and Open Period of Performance: 3-Year Base + Option to Extend Services for 6 Months (FAR 52.217- 8) Anticipated Solicitation Release Date February 6, 2026. The solicitation will be posted on SAM.gov under Contract Opportunities. Representative Projects The following is a non-exhaustive list of representative projects that may be procured under the JMACC. These examples are provided to illustrate the general types of constructionrelated work that fall within the scope of this contract: Engineering Consolidation, Phase 1A This will be the Seed project for JMACC and used as the basis for evaluations. EA Phase 1A will be awarded to the IDIQ holder who represents the Best Value to the Government. Engineering Consolidation, Phase 1B Replace Electric Chillers, Building 24 Replace Electric Chillers, Building 28 Upgrade Cooling Tower Capacity, Building 24 Replace Boilers, Building 24 New Campus Chilled Water Filtration/Treatment System (Buildings 24 & 28) Replace Building Transformers and Line Switches Replace Electrical Feeders Replace Potable Water Tie-ins for Buildings Replace Failed Air Handling Units (AHUs) Replace Chilled Water Systems, Building 30 Evaluation Approach Awards will be made using a Best Value Performance Price Trade-Off (PPTO) process. Complete details of the evaluation factors are provided in the attachment included with this pre-solicitation synopsis. Technical Acceptability will be evaluated on a Pass/Fail basis (SAM registration, bonding capacity, schedule compliance). The evaluation factors are Price and Past Performance, with Past Performance being significantly more important than Price. Industry Engagement A Pre-proposal conference and Site Visit may be scheduled. Details will be provided in the solicitation. Point of Contact William Long Email: william.r.long@nasa.gov Disclaimer This notice is for informational purposes only and does not constitute a solicitation. No proposals are being requested at this time. Additional Information Attachments: Draft Statement of Work (SOW) Draft Evaluation Factors for Award Pre-Solicitation Synopsis PDF, 2024.3.29 FINAL Geotech Report NASA Engineering Consolidation Phase 1A 2025.5.2 Supplement1 Geotech Report Utilities 2025.9.17 Memo1 Geotech Report - Retaining Wall EA Consolidation Phase 1A Basic SOW EA_Ph1a_IFC_Drawings_Signed EA_Ph1a_IFC_Specifications_Signed EA Ph1a IFC Specifications 1-14-26 - - Due to file size this document is located at the Box link below. Response Instructions: No response required at this stage. Monitor SAM.gov for official solicitation release.

NASA/Johnson Space Center is issuing a Request for Proposal (RFP) for the Johnson Space Center Multiple Award Construction Contract (JMACC), 80JSC026R0008. The Johnson Space Center (JSC) Multiple Award Construction Contract (JMACC) will be a Multiple Award, Indefinite Delivery, Indefinite Quantity (IDIQ) contract vehicle for construction, revitalization, recapitalization, and infrastructure improvement projects at Johnson Space Center (JSC) and White Sands Test Facility (WSTF). The JMACC is not a requirements contract and is therefore not mandatory for all construction work at JSC or WSTF. It is intended to serve as a highly flexible construction contracting vehicle to support mission-critical facility needs. All contractors will need to have capacity to manage multiple Task Orders. The scope of work under the JMACC includes, but is not limited to: General construction. Alteration, modification, and renovation of existing facilities. Maintenance and repair of buildings and infrastructure. Demolition of structures and facilities. Design-build services. New construction of buildings, facilities, and real property NASA will conduct this acquisition as a full and open competition. The North American Industry Classification System (NAICS) code for this acquisition is 236210 and the small business size standard is forty-five million. This competitive acquisition will result in a Multiple Award, Indefinite Delivery Indefinite Quantity (IDIQ) with the ability to issue Firm-Fixed Price (FFP) task orders. The contract will have a base period of three (3) years from the date of award. You are notified of the following: 1. Proposals submitted in response to this solicitation shall be due no later than March 30, 2026, 1:00 P.M. Central Time. Proposals for this solicitation are required to be submitted through NASA s Enterprise File Sharing and Sync Box (EFSS Box), a FedRAMP Moderate certified platform. Potential offerors, especially those that have not previously submitted a proposal utilizing NASA s EFSS Box, are encouraged to review the solicitation instruction entitled Electronic Proposal Delivery - Proposal Marking and Delivery Through NASA s EFSS Box which provides instructions related to the submission of proposal via EFSS Box. Offerors are encouraged to check with their corporate IT staff to determine if there are firewall restrictions that would need to be addressed prior to the submission of proposal files through NASA s EFSS Box. 2. All questions regarding this RFP should be submitted in writing, electronically to William Long, Contracting Officer, at William.r.long@nasa.gov on or before March 11, 2026, 10:00 A.M. Central Time. Offerors are encouraged to submit questions as soon as possible for consideration. 3. The RFP and all attachments in their entirety are located in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 4. The Technical Library is available in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 5. If you have any issues accessing NASA s Enterprise File Sharing and Sync Box (EFSS Box), please contact the Contracting Officer, William Long at william.r.long@nasa.gov and Contract Specialist Kylee Salmeron at kylee.m.salmeron. 6. A preproposal/pre-bid conference and Site Visit is anticipated and will be held as indicated below: Date: Monday, March 9, 2026 Time: 2:00 P.M. to 5:00 P.M. Central Time Location: Building 13 Room 156, Johnson Space Center Please note that this event will be conducted in-person and no virtual option will be provided. Attendance at the preproposal conference / Site Visit is recommended; however, attendance is neither required nor a prerequisite for proposal/bid submission and will not be considered in the evaluation. Offerors are required to notify the Contracting Officer by e-mail no later than Wednesday, March 4, 2026, at 9:00 A.M. Central Time to confirm attendance and specify the names of the attendees from their respective companies. Further detals are located in the RFP and RFP cover letter. NASA anticipates releasing the Pre-Proposal Conference charts after the Pre-Proposal Conference. Please continue to monitor this SAM.gov posting for updates on the release of any documents. NASA FAR Supplement (NFS)clause 1852.215-84, Ombudsman, is applicable. The Ombudsman for this acquisition is Donna M. Shafer, donna.m.shafer@nasa.gov, 281-483-4258. It is the offeror's responsibility to monitor this website for amendments to this solicitation and other information. Potential offerors will be responsible for downloading their own copy of the solicitation and amendments. Prospective offerors are encouraged to notify the Contracting Officer of their intent to submit an offer.

NASA/Johnson Space Center is issuing a Request for Proposal (RFP) for the Johnson Space Center Multiple Award Construction Contract (JMACC), 80JSC026R0008. The Johnson Space Center (JSC) Multiple Award Construction Contract (JMACC) will be a Multiple Award, Indefinite Delivery, Indefinite Quantity (IDIQ) contract vehicle for construction, revitalization, recapitalization, and infrastructure improvement projects at Johnson Space Center (JSC) and White Sands Test Facility (WSTF). The JMACC is not a requirements contract and is therefore not mandatory for all construction work at JSC or WSTF. It is intended to serve as a highly flexible construction contracting vehicle to support mission-critical facility needs. All contractors will need to have capacity to manage multiple Task Orders. The scope of work under the JMACC includes, but is not limited to: General construction. Alteration, modification, and renovation of existing facilities. Maintenance and repair of buildings and infrastructure. Demolition of structures and facilities. Design-build services. New construction of buildings, facilities, and real property NASA will conduct this acquisition as a full and open competition. The North American Industry Classification System (NAICS) code for this acquisition is 236210 and the small business size standard is forty-five million. This competitive acquisition will result in a Multiple Award, Indefinite Delivery Indefinite Quantity (IDIQ) with the ability to issue Firm-Fixed Price (FFP) task orders. The contract will have a base period of three (3) years from the date of award. You are notified of the following: 1. Proposals submitted in response to this solicitation shall be due no later than March 30, 2026, 1:00 P.M. Central Time. Proposals for this solicitation are required to be submitted through NASA s Enterprise File Sharing and Sync Box (EFSS Box), a FedRAMP Moderate certified platform. Potential offerors, especially those that have not previously submitted a proposal utilizing NASA s EFSS Box, are encouraged to review the solicitation instruction entitled Electronic Proposal Delivery - Proposal Marking and Delivery Through NASA s EFSS Box which provides instructions related to the submission of proposal via EFSS Box. Offerors are encouraged to check with their corporate IT staff to determine if there are firewall restrictions that would need to be addressed prior to the submission of proposal files through NASA s EFSS Box. 2. All questions regarding this RFP should be submitted in writing, electronically to William Long, Contracting Officer, at William.r.long@nasa.gov on or before March 11, 2026, 10:00 A.M. Central Time. Offerors are encouraged to submit questions as soon as possible for consideration. 3. The RFP and all attachments in their entirety are located in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 4. The Technical Library is available in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 5. If you have any issues accessing NASA s Enterprise File Sharing and Sync Box (EFSS Box), please contact the Contracting Officer, William Long at william.r.long@nasa.gov and Contract Specialist Kylee Salmeron at kylee.m.salmeron. 6. A preproposal/pre-bid conference and Site Visit is anticipated and will be held as indicated below: Date: Monday, March 9, 2026 Time: 2:00 P.M. to 5:00 P.M. Central Time Location: Building 13 Room 156, Johnson Space Center Please note that this event will be conducted in-person and no virtual option will be provided. Attendance at the preproposal conference / Site Visit is recommended; however, attendance is neither required nor a prerequisite for proposal/bid submission and will not be considered in the evaluation. Offerors are required to notify the Contracting Officer by e-mail no later than Wednesday, March 4, 2026, at 9:00 A.M. Central Time to confirm attendance and specify the names of the attendees from their respective companies. Further detals are located in the RFP and RFP cover letter. NASA anticipates releasing the Pre-Proposal Conference charts after the Pre-Proposal Conference. Please continue to monitor this SAM.gov posting for updates on the release of any documents. NASA FAR Supplement (NFS)clause 1852.215-84, Ombudsman, is applicable. The Ombudsman for this acquisition is Donna M. Shafer, donna.m.shafer@nasa.gov, 281-483-4258. It is the offeror's responsibility to monitor this website for amendments to this solicitation and other information. Potential offerors will be responsible for downloading their own copy of the solicitation and amendments. Prospective offerors are encouraged to notify the Contracting Officer of their intent to submit an offer. Modification 1 3/9/2026 Added Pre?proposal Conference Slides to SAM posting and Box site.

NASA/Johnson Space Center is issuing a Request for Proposal (RFP) for the Johnson Space Center Multiple Award Construction Contract (JMACC), 80JSC026R0008. The Johnson Space Center (JSC) Multiple Award Construction Contract (JMACC) will be a Multiple Award, Indefinite Delivery, Indefinite Quantity (IDIQ) contract vehicle for construction, revitalization, recapitalization, and infrastructure improvement projects at Johnson Space Center (JSC) and White Sands Test Facility (WSTF). The JMACC is not a requirements contract and is therefore not mandatory for all construction work at JSC or WSTF. It is intended to serve as a highly flexible construction contracting vehicle to support mission-critical facility needs. All contractors will need to have capacity to manage multiple Task Orders. The scope of work under the JMACC includes, but is not limited to: General construction. Alteration, modification, and renovation of existing facilities. Maintenance and repair of buildings and infrastructure. Demolition of structures and facilities. Design-build services. New construction of buildings, facilities, and real property NASA will conduct this acquisition as a full and open competition. The North American Industry Classification System (NAICS) code for this acquisition is 236210 and the small business size standard is forty-five million. This competitive acquisition will result in a Multiple Award, Indefinite Delivery Indefinite Quantity (IDIQ) with the ability to issue Firm-Fixed Price (FFP) task orders. The contract will have a base period of three (3) years from the date of award. You are notified of the following: 1. Proposals submitted in response to this solicitation shall be due no later than April 6, 2026, 1:00 P.M. Central Time. Proposals for this solicitation are required to be submitted through NASA s Enterprise File Sharing and Sync Box (EFSS Box), a FedRAMP Moderate certified platform. Potential offerors, especially those that have not previously submitted a proposal utilizing NASA s EFSS Box, are encouraged to review the solicitation instruction entitled Electronic Proposal Delivery - Proposal Marking and Delivery Through NASA s EFSS Box which provides instructions related to the submission of proposal via EFSS Box. Offerors are encouraged to check with their corporate IT staff to determine if there are firewall restrictions that would need to be addressed prior to the submission of proposal files through NASA s EFSS Box. 2. All questions regarding this RFP should be submitted in writing, electronically to William Long, Contracting Officer, at William.r.long@nasa.gov on or before March 16, 2026, 10:00 A.M. Central Time. Offerors are encouraged to submit questions as soon as possible for consideration. 3. The RFP and all attachments in their entirety are located in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 4. The Technical Library is available in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 5. If you have any issues accessing NASA s Enterprise File Sharing and Sync Box (EFSS Box), please contact the Contracting Officer, William Long at william.r.long@nasa.gov and Contract Specialist Kylee Salmeron at kylee.m.salmeron. 6. A preproposal/pre-bid conference and Site Visit is anticipated and will be held as indicated below: Date: Monday, March 9, 2026 Time: 2:00 P.M. to 5:00 P.M. Central Time Location: Building 13 Room 156, Johnson Space Center Please note that this event will be conducted in-person and no virtual option will be provided. Attendance at the preproposal conference / Site Visit is recommended; however, attendance is neither required nor a prerequisite for proposal/bid submission and will not be considered in the evaluation. Offerors are required to notify the Contracting Officer by e-mail no later than Wednesday, March 4, 2026, at 9:00 A.M. Central Time to confirm attendance and specify the names of the attendees from their respective companies. Further detals are located in the RFP and RFP cover letter. NASA anticipates releasing the Pre-Proposal Conference charts after the Pre-Proposal Conference. Please continue to monitor this SAM.gov posting for updates on the release of any documents. NASA FAR Supplement (NFS)clause 1852.215-84, Ombudsman, is applicable. The Ombudsman for this acquisition is Donna M. Shafer, donna.m.shafer@nasa.gov, 281-483-4258. It is the offeror's responsibility to monitor this website for amendments to this solicitation and other information. Potential offerors will be responsible for downloading their own copy of the solicitation and amendments. Prospective offerors are encouraged to notify the Contracting Officer of their intent to submit an offer. Modification 1 3/9/2026 Added Pre?proposal Conference Slides to SAM posting and Box site. Modification 2 - RFP Amendment 0001 Issued 3/11/2026 - Change RFP questions due date: From: March 11, 2026 at 10:00 A.M. CST. To: March 16, 2026 at 10:00 A.M. CST. 2. Change Proposal due date: From: March 30, 2026 at 1:00 P.M. CST. To: April 6, 2026 at 1:00 P.M. CST.

NASA/Johnson Space Center is issuing a Request for Proposal (RFP) for the Johnson Space Center Multiple Award Construction Contract (JMACC), 80JSC026R0008. The Johnson Space Center (JSC) Multiple Award Construction Contract (JMACC) will be a Multiple Award, Indefinite Delivery, Indefinite Quantity (IDIQ) contract vehicle for construction, revitalization, recapitalization, and infrastructure improvement projects at Johnson Space Center (JSC) and White Sands Test Facility (WSTF). The JMACC is not a requirements contract and is therefore not mandatory for all construction work at JSC or WSTF. It is intended to serve as a highly flexible construction contracting vehicle to support mission-critical facility needs. All contractors will need to have capacity to manage multiple Task Orders. The scope of work under the JMACC includes, but is not limited to: General construction. Alteration, modification, and renovation of existing facilities. Maintenance and repair of buildings and infrastructure. Demolition of structures and facilities. Design-build services. New construction of buildings, facilities, and real property NASA will conduct this acquisition as a full and open competition. The North American Industry Classification System (NAICS) code for this acquisition is 236210 and the small business size standard is forty-five million. This competitive acquisition will result in a Multiple Award, Indefinite Delivery Indefinite Quantity (IDIQ) with the ability to issue Firm-Fixed Price (FFP) task orders. The contract will have a base period of three (3) years from the date of award. You are notified of the following: 1. Proposals submitted in response to this solicitation shall be due no later than April 6, 2026, 1:00 P.M. Central Time. Proposals for this solicitation are required to be submitted through NASA s Enterprise File Sharing and Sync Box (EFSS Box), a FedRAMP Moderate certified platform. Potential offerors, especially those that have not previously submitted a proposal utilizing NASA s EFSS Box, are encouraged to review the solicitation instruction entitled Electronic Proposal Delivery - Proposal Marking and Delivery Through NASA s EFSS Box which provides instructions related to the submission of proposal via EFSS Box. Offerors are encouraged to check with their corporate IT staff to determine if there are firewall restrictions that would need to be addressed prior to the submission of proposal files through NASA s EFSS Box. 2. All questions regarding this RFP should be submitted in writing, electronically to William Long, Contracting Officer, at William.r.long@nasa.gov on or before March 16, 2026, 10:00 A.M. Central Time. Offerors are encouraged to submit questions as soon as possible for consideration. 3. The RFP and all attachments in their entirety are located in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 4. The Technical Library is available in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 5. If you have any issues accessing NASA s Enterprise File Sharing and Sync Box (EFSS Box), please contact the Contracting Officer, William Long at william.r.long@nasa.gov and Contract Specialist Kylee Salmeron at kylee.m.salmeron. 6. A preproposal/pre-bid conference and Site Visit is anticipated and will be held as indicated below: Date: Monday, March 9, 2026 Time: 2:00 P.M. to 5:00 P.M. Central Time Location: Building 13 Room 156, Johnson Space Center Please note that this event will be conducted in-person and no virtual option will be provided. Attendance at the preproposal conference / Site Visit is recommended; however, attendance is neither required nor a prerequisite for proposal/bid submission and will not be considered in the evaluation. Offerors are required to notify the Contracting Officer by e-mail no later than Wednesday, March 4, 2026, at 9:00 A.M. Central Time to confirm attendance and specify the names of the attendees from their respective companies. Further detals are located in the RFP and RFP cover letter. NASA anticipates releasing the Pre-Proposal Conference charts after the Pre-Proposal Conference. Please continue to monitor this SAM.gov posting for updates on the release of any documents. NASA FAR Supplement (NFS)clause 1852.215-84, Ombudsman, is applicable. The Ombudsman for this acquisition is Donna M. Shafer, donna.m.shafer@nasa.gov, 281-483-4258. It is the offeror's responsibility to monitor this website for amendments to this solicitation and other information. Potential offerors will be responsible for downloading their own copy of the solicitation and amendments. Prospective offerors are encouraged to notify the Contracting Officer of their intent to submit an offer. Modification 1 3/9/2026 Added Pre?proposal Conference Slides to SAM posting and Box site. Modification 2 - RFP Amendment 0001 Issued 3/11/2026 - Change RFP questions due date: From: March 11, 2026 at 10:00 A.M. CST. To: March 16, 2026 at 10:00 A.M. CST. 2. Change Proposal due date: From: March 30, 2026 at 1:00 P.M. CST. To: April 6, 2026 at 1:00 P.M. CST. Modification 3 - 3/26/2026 Added Johnson Space Center Multiple Award Construction Contract (JMACC) - Website to Sam.gov posting.

NASA/Johnson Space Center is issuing a Request for Proposal (RFP) for the Johnson Space Center Multiple Award Construction Contract (JMACC), 80JSC026R0008. The Johnson Space Center (JSC) Multiple Award Construction Contract (JMACC) will be a Multiple Award, Indefinite Delivery, Indefinite Quantity (IDIQ) contract vehicle for construction, revitalization, recapitalization, and infrastructure improvement projects at Johnson Space Center (JSC) and White Sands Test Facility (WSTF). The JMACC is not a requirements contract and is therefore not mandatory for all construction work at JSC or WSTF. It is intended to serve as a highly flexible construction contracting vehicle to support mission-critical facility needs. All contractors will need to have capacity to manage multiple Task Orders. The scope of work under the JMACC includes, but is not limited to: General construction. Alteration, modification, and renovation of existing facilities. Maintenance and repair of buildings and infrastructure. Demolition of structures and facilities. Design-build services. New construction of buildings, facilities, and real property NASA will conduct this acquisition as a full and open competition. The North American Industry Classification System (NAICS) code for this acquisition is 236210 and the small business size standard is forty-five million. This competitive acquisition will result in a Multiple Award, Indefinite Delivery Indefinite Quantity (IDIQ) with the ability to issue Firm-Fixed Price (FFP) task orders. The contract will have a base period of three (3) years from the date of award. You are notified of the following: 1. Proposals submitted in response to this solicitation shall be due no later than April 14, 2026, 1:00 P.M. Central Time. Proposals for this solicitation are required to be submitted through NASA s Enterprise File Sharing and Sync Box (EFSS Box), a FedRAMP Moderate certified platform. Potential offerors, especially those that have not previously submitted a proposal utilizing NASA s EFSS Box, are encouraged to review the solicitation instruction entitled Electronic Proposal Delivery - Proposal Marking and Delivery Through NASA s EFSS Box which provides instructions related to the submission of proposal via EFSS Box. Offerors are encouraged to check with their corporate IT staff to determine if there are firewall restrictions that would need to be addressed prior to the submission of proposal files through NASA s EFSS Box. 2. All questions regarding this RFP should be submitted in writing, electronically to William Long, Contracting Officer, at William.r.long@nasa.gov on or before March 16, 2026, 10:00 A.M. Central Time. Offerors are encouraged to submit questions as soon as possible for consideration. 3. The RFP and all attachments in their entirety are located in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 4. The Technical Library is available in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 5. If you have any issues accessing NASA s Enterprise File Sharing and Sync Box (EFSS Box), please contact the Contracting Officer, William Long at william.r.long@nasa.gov and Contract Specialist Kylee Salmeron at kylee.m.salmeron. 6. A preproposal/pre-bid conference and Site Visit is anticipated and will be held as indicated below: Date: Monday, March 9, 2026 Time: 2:00 P.M. to 5:00 P.M. Central Time Location: Building 13 Room 156, Johnson Space Center Please note that this event will be conducted in-person and no virtual option will be provided. Attendance at the preproposal conference / Site Visit is recommended; however, attendance is neither required nor a prerequisite for proposal/bid submission and will not be considered in the evaluation. Offerors are required to notify the Contracting Officer by e-mail no later than Wednesday, March 4, 2026, at 9:00 A.M. Central Time to confirm attendance and specify the names of the attendees from their respective companies. Further detals are located in the RFP and RFP cover letter. NASA anticipates releasing the Pre-Proposal Conference charts after the Pre-Proposal Conference. Please continue to monitor this SAM.gov posting for updates on the release of any documents. NASA FAR Supplement (NFS)clause 1852.215-84, Ombudsman, is applicable. The Ombudsman for this acquisition is Donna M. Shafer, donna.m.shafer@nasa.gov, 281-483-4258. It is the offeror's responsibility to monitor this website for amendments to this solicitation and other information. Potential offerors will be responsible for downloading their own copy of the solicitation and amendments. Prospective offerors are encouraged to notify the Contracting Officer of their intent to submit an offer. Modification 1 3/9/2026 Added Pre?proposal Conference Slides to SAM posting and Box site. Modification 2 - RFP Amendment 0001 Issued 3/11/2026 - Change RFP questions due date: From: March 11, 2026 at 10:00 A.M. CST. To: March 16, 2026 at 10:00 A.M. CST. 2. Change Proposal due date: From: March 30, 2026 at 1:00 P.M. CST. To: April 6, 2026 at 1:00 P.M. CST. Modification 3 - 3/26/2026 Added Johnson Space Center Multiple Award Construction Contract (JMACC) - Website to Sam.gov posting. Modification 4- 4/2/2026 RFP Amendment 0002 Issued and provided Preproposal - Pre-bid Conference Attendee List 1. Extend the proposal due date from 04/06/2026 at 1:00 PM CST to 04/14/2026 at 1:00 PM CST. Reference Section L.17 .2. 2. Incorporate Questions and Answers received on the JMACC Request for Proposal (RFP). See pages 6-23 Of Amendment 0002. 3. Replace the RFP in its entirety. See the Change Log on Pages 2-5 of Amendment 0002. Amendment 0002 Documents and attachments are provided at the below JMACC RFP Box link. Any Questions that the Government received by the Question Due date that has not been addressed in Amendment 0002, will be addressed in a additional Amendment at a later date.

NASA/Johnson Space Center is issuing a Request for Proposal (RFP) for the Johnson Space Center Multiple Award Construction Contract (JMACC), 80JSC026R0008. The Johnson Space Center (JSC) Multiple Award Construction Contract (JMACC) will be a Multiple Award, Indefinite Delivery, Indefinite Quantity (IDIQ) contract vehicle for construction, revitalization, recapitalization, and infrastructure improvement projects at Johnson Space Center (JSC) and White Sands Test Facility (WSTF). The JMACC is not a requirements contract and is therefore not mandatory for all construction work at JSC or WSTF. It is intended to serve as a highly flexible construction contracting vehicle to support mission-critical facility needs. All contractors will need to have capacity to manage multiple Task Orders. The scope of work under the JMACC includes, but is not limited to: General construction. Alteration, modification, and renovation of existing facilities. Maintenance and repair of buildings and infrastructure. Demolition of structures and facilities. Design-build services. New construction of buildings, facilities, and real property NASA will conduct this acquisition as a full and open competition. The North American Industry Classification System (NAICS) code for this acquisition is 236210 and the small business size standard is forty-five million. This competitive acquisition will result in a Multiple Award, Indefinite Delivery Indefinite Quantity (IDIQ) with the ability to issue Firm-Fixed Price (FFP) task orders. The contract will have a base period of three (3) years from the date of award. You are notified of the following: 1. Proposals submitted in response to this solicitation shall be due no later than April 14, 2026, 1:00 P.M. Central Time. Proposals for this solicitation are required to be submitted through NASA s Enterprise File Sharing and Sync Box (EFSS Box), a FedRAMP Moderate certified platform. Potential offerors, especially those that have not previously submitted a proposal utilizing NASA s EFSS Box, are encouraged to review the solicitation instruction entitled Electronic Proposal Delivery - Proposal Marking and Delivery Through NASA s EFSS Box which provides instructions related to the submission of proposal via EFSS Box. Offerors are encouraged to check with their corporate IT staff to determine if there are firewall restrictions that would need to be addressed prior to the submission of proposal files through NASA s EFSS Box. 2. All questions regarding this RFP should be submitted in writing, electronically to William Long, Contracting Officer, at William.r.long@nasa.gov on or before March 16, 2026, 10:00 A.M. Central Time. Offerors are encouraged to submit questions as soon as possible for consideration. 3. The RFP and all attachments in their entirety are located in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 4. The Technical Library is available in NASA s Enterprise File Sharing and Sync Box (EFSS Box) at the following link, https://nasagov.app.box.com/s/3abflljut7dptlzco0v1vcqvhyjp753u The link is also provided below in this posting. 5. If you have any issues accessing NASA s Enterprise File Sharing and Sync Box (EFSS Box), please contact the Contracting Officer, William Long at william.r.long@nasa.gov and Contract Specialist Kylee Salmeron at kylee.m.salmeron. 6. A preproposal/pre-bid conference and Site Visit is anticipated and will be held as indicated below: Date: Monday, March 9, 2026 Time: 2:00 P.M. to 5:00 P.M. Central Time Location: Building 13 Room 156, Johnson Space Center Please note that this event will be conducted in-person and no virtual option will be provided. Attendance at the preproposal conference / Site Visit is recommended; however, attendance is neither required nor a prerequisite for proposal/bid submission and will not be considered in the evaluation. Offerors are required to notify the Contracting Officer by e-mail no later than Wednesday, March 4, 2026, at 9:00 A.M. Central Time to confirm attendance and specify the names of the attendees from their respective companies. Further detals are located in the RFP and RFP cover letter. NASA anticipates releasing the Pre-Proposal Conference charts after the Pre-Proposal Conference. Please continue to monitor this SAM.gov posting for updates on the release of any documents. NASA FAR Supplement (NFS)clause 1852.215-84, Ombudsman, is applicable. The Ombudsman for this acquisition is Donna M. Shafer, donna.m.shafer@nasa.gov, 281-483-4258. It is the offeror's responsibility to monitor this website for amendments to this solicitation and other information. Potential offerors will be responsible for downloading their own copy of the solicitation and amendments. Prospective offerors are encouraged to notify the Contracting Officer of their intent to submit an offer. Modification 1 3/9/2026 Added Pre?proposal Conference Slides to SAM posting and Box site. Modification 2 - RFP Amendment 0001 Issued 3/11/2026 - Change RFP questions due date: From: March 11, 2026 at 10:00 A.M. CST. To: March 16, 2026 at 10:00 A.M. CST. 2. Change Proposal due date: From: March 30, 2026 at 1:00 P.M. CST. To: April 6, 2026 at 1:00 P.M. CST. Modification 3 - 3/26/2026 Added Johnson Space Center Multiple Award Construction Contract (JMACC) - Website to Sam.gov posting. Modification 4- 4/2/2026 RFP Amendment 0002 Issued and provided Preproposal - Pre-bid Conference Attendee List 1. Extend the proposal due date from 04/06/2026 at 1:00 PM CST to 04/14/2026 at 1:00 PM CST. Reference Section L.17 .2. 2. Incorporate Questions and Answers received on the JMACC Request for Proposal (RFP). See pages 6-23 Of Amendment 0002. 3. Replace the RFP in its entirety. See the Change Log on Pages 2-5 of Amendment 0002. Amendment 0002 Documents and attachments are provided at the below JMACC RFP Box link. Any Questions that the Government received by the Question Due date that has not been addressed in Amendment 0002, will be addressed in a additional Amendment at a later date. Modification 5 - 4/8/2026 - Issued RFP Amendment 0003 The purpose of Amendment 0003 is to: 1. Incorporate remaining Questions and Answers received on the JMACC Request for Proposal (RFP). See page 3. 2. Amendment 0003 revises only the Government responses to the questions and answers previously issued in Amendment 0002 on page 4. No other questions or answers are affected. See page 4. 3. Replace Attachment L-A Model Task Order in its entirety. See the Change Log on page 2. *Please note that the Government does not intend to extend the proposal due date based on the content of Amendment 0003.