Off-Site Construction

  • Plan Review
  • Engineering
  • Inspection

Plan Review

ICC NTA provides third-party plan review services to ensure your off-site construction projects and modular buildings meet or exceed code requirements. Our Professional Engineers and Certified ICC Level III plan reviewers share their expertise with you throughout the entire project, helping you stay on schedule. Plan review by ICC NTA is accepted in all jurisdictions and states with certification programs that accept third-party plan review. Additionally, ICC NTA is a designated third-party agency for Modular by the Interstate Industrialized Buildings Commission (IIBC).

Engineering Services

ICC NTA Professional Engineers maintain licenses in all 50 U.S. States, the District of Columbia, and many provinces in Canada. Together with their licenses, our engineers use their extensive knowledge of off-site construction, manufacturing processes, material properties, and design principles to ensure structural engineering calculations and calculation reviews fulfill all relevant requirements of the building code.

Inspection Services

ICC NTA inspection professionals have completed hundreds of building code examinations and hold hundreds of International Code Council certifications. Additionally, we can provide inspections for Canadian approvals. Our network of auditors supports you through review and inspection of your in-plant quality control procedures, and it grants you peace of mind that your buildings will remain code-compliant.

Confidence & Trust

With nationally recognized accreditation, state-of-the-art equipment and processes, and our reputation for integrity, your customers will trust our results.


We work together with our clients to solve their challenges and address their needs. Because you’re involved every step of the way, you’re better equipped to address market demands.


Work together with our team of experts to help you reach the market with new and innovative building solutions. Our licensed and specially trained staff will guide you through every step of the approval process to help you reach the finish line.

Product Certification

Does your building plan include the use of innovative building products, but those products are not yet code compliant? Together with our colleagues at ICC Evaluation Service (ICC-ES), we will help your supplier obtain proof of compliance through ICC-ES product certification so you can maintain confidence in your off-site construction product.

Total Solution

Our teams across the International Code Council Family of Solutions collaborate to develop and execute tailored plans to meet your needs, from single products to massive projects. This means less project management for you and a more straightforward path to the market for your innovative products and buildings.