ICC Off-Site and Modular Construction Standards Committee

The Code Council has developed new ICC/MBI 1200-2021, Standard for Off-Site Construction: Planning, Design, Fabrication and Assembly and new ICC/MBI 1205-2021, Standard for Off-Site Construction: Inspection and Regulatory Compliance.   ICC/MBI 1200-2021 addresses the facets of the off-site construction process including: planning; designing; fabricating; transporting; and assembling commercial and residential building elements.  ICC/MBI 1205 – 2021 addresses the inspection, approval and regulatory compliance of off-site residential and commercial construction components and their assembly and completion at the final building site.  This includes: permitting; in-plant and on-site final inspections; third party inspections; the role of Industrialized Building Departments, state modular programs and the Authority Having Jurisdiction.  These standards include componentized, panelized and modularized elements and will not apply to HUD Manufactured Housing.

The Code Council adheres to openness and transparency in our standards development process.  All ICC Standards committee meetings are open to the public.  Any interested party can participate in committee meetings and can be considered by the committee for membership on any work-group that the committee creates. Interested parties will be notified by email of standards activities related to Off-site and Modular Construction Standards, including committee meetings, sub-group meetings and the availability of standard development documentation. If you wish to be placed on the “interested parties” list for the development of this standard, contact the ICC IS-OSMC Secretariat, Karl Aittaniemi, P.E.

ICC IS-OSMC Off-Site and Modular Construction Standards Committee

The Off-Site and Modular Construction Standards Committee (IS-OSMC) was appointed by the ICC Board of Directors in July 2019 and has primary responsibility for the development as American National Standards.  All standards development is subject to ICC's Consensus Procedures.

Applications to serve on the committee were received on April 15, 2019 for the ICC Board of Directors consideration in response to a call for committee in March 2019. Read more...

ICC joins modular building revolution

As use of off-site construction grows, the Code Council partners with industry leader to develop new standards. Read more...

The International Code Council Board of Directors held a productive, in-person meeting on Dec 7, 2018 in Florida as reported in the ICC Building Safety Journal. Read more...

For more information on Off-site Construction Solutions for Today's Challenges please read more...


The first in-person public meeting of the IS-OSMC committee was held on November 19 and 20, 2019.  The Meeting Minutes and supporting meeting topics have been posted in the Committee Documents. Read more…

The second meeting of the committee was conducted as teleconference on January 16, 2020.  The meeting minutes have been posted in the Committee Documents.

The third meeting of the OSMC committee was successfully held at the 2020 World of Modular Conference in Orlando, FL on March 11th and 12th.  The meeting was very productive and the conference was well attended. Many new interested parties were in attendance.  Read more… Meeting minutes have been posted below.

The twenty-first public meeting was held on May 18, 2021 at noon ET.  The committee approved meeting minutes has been posted below. This completes the committee adjudication on the second round of public comments. A second committee action report (CAR) is posted below under Meeting Notes and Agendas.  The deadline for proponents to comment on the second CAR is June 21, 2021. If no comments are received, the public comments in the second CAR will be considered resolved by the committee action.

The twenty-second public meeting of the committee was held on June 9, 2021 at noon ET. The meeting minutes pending committee approval are posted below.

The balloting period for committee members to approve the final drafts was completed on June 28, 2021.  Both ICC 1200 and ICC 1205 first edition standards were approved by the committee.  Both ICC 1200 and ICC 1205 received ANSI Approval as American National Standards on July 19, 2021.

The new editions of the standards are now readily available at the ICC Store. Please click here.

A call for committee was posted on July 1, 2021 to organize the Off-Site Construction Mechanical Electrical and Plumbing Standard Consensus Committee (IS-OSMEP).  This committee would develop new ICC 1210 -202X Standard for Mechanical, Electrical, Plumbing Systems, Energy Efficiency and Water Conservation in Off-site Construction.  ICC 1210-202X would address requirements for the energy efficiency and water conservation of off-site construction projects and the planning, designing, fabricating, transporting, and assembling, of commercial and residential building MEP system elements. This includes the componentization and modularization of elements of MEP systems, the incorporation of MEP systems in componentized, panelized or modularized building elements, and the achievement of energy efficiency and water conservation requirements in off-site construction. This standard would not apply to HUD manufactured housing. 

The deadline to apply expired on August 15, 2021. Appointments will made by the ICC Board of Directors at the next Board meeting in September 2021.  


Committee Documents