IAS: Metal Building Inspection Assembler Accreditation

Metal Building Assemblers Inspection Accreditation

IAS accredits the inspection practices of companies that assemble metal building systems. The accreditation is based on requirements in IAS Accreditation Criteria AC478 and the International Building Code®. Getting accredited involves an assessment of the company’s management system, that includes the assembly processes, internal safety, training programs, periodic jobsite inspections, etc. IAS accreditation establishes a benchmark for companies qualified to assemble and erect metal buildings.

Architects: Specify IAS Accredited Metal Building Contractors & Fabricators
IAS Accreditation for Metal Building Assemblers Inspection (AC478)
  • The recognized benchmark for best practices in inspection of metal building assemblers.
  • Provides confidence that buildings will be assembled in accordance with code, specifications, costs and deadlines.
  • Recognized by:
    • Metal Building Contractors and Erectors Association (MBCEA)
    • North American Iron Workers / IMPACT Labor-Management
    • Metal Building Manufacturers Association (MBMA)
    • International Code Council (ICC).



Become an Assessor

Interested professionals are welcome to apply online and submit their resume/CV.

Apply Now

Watch the recording of the AC472 & AC478 Accreditations, Improving Quality and Success in Metal Building Design and Construction presented to The American Institute of Architects.

Webinar Recording


IAS accredited metal building assemblers are preferred by architects, specifiers, owners, manufacturers and regulators. Accredited companies have demonstrated they have the management and inspection procedures to competently assemble metal building systems in accordance with specified requirements.

Join the Metal Building Assemblers Inspection Accreditation List
Get the latest information about accreditation practices, standards, training courses and more, when you join the IAS list for Metal Building Assemblers. To join, click here.

Join the IAS AC478 Accreditation for Metal Building Assemblers LinkedIn page here

Watch the recording of the Route to AC478 Accreditation for Metal Building Assemblers

Webinar Recording

IAS also offers related accreditation programs that support metal building systems, including  AC472 (Metal Building Systems) and AC473 (Cold Formed Structures).


Get A Quote!

To receive a quote for accreditation, please visit the IAS Customer Portal.

Get a Quote