NTA, Inc.

Excellence in Building Product Evaluation and Certification

Building and building product testing, inspection and certification are so important, yet they can seem so overwhelming. That’s why NTA is dedicated to providing building industry professionals with the highest quality, third party services they need to ensure the public’s safety in the built environment. Thanks to the deep expertise and specialized technology of our IAS accredited lab, we make the product testing and code evaluation process simple, seamless and efficient, so that your product is Simply Certified.

What NTA can do for you

NTA not only provides third party testing and inspection, but we offer a range of services such as code evaluation, plan review, certification and engineering services.

Quality Audits and Inspections


NTA is the third party of choice for residential & commercial housing due to our ability to deliver inspections by knowledgeable personnel. By operating out of five regional offices nationwide, we are wherever you are.

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Our IAS accredited, third party product certification services verify a product‘s compliance to standards, conformity to code and provides verification of quality programs. View our Certificate of Accreditation.

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Testing and Evaluation

Test and Evaluate

NTA carries multiple accreditations so we can offer a ‘one–stop–shop’ for all of your product evaluation needs, from large, structural assemblies to small samples of materials (see a complete list of our credentials).

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CAD Services

CAD Services

Our CAD technicians have many of the same certifications as our plan reviewers. This expertise and knowledge means that your plans are created with code compliance in mind from the very beginning.

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Building Compliance


NTA is an industry leader in verifying that HUD, modular, residential and commercial buildings are compliant to the IRC, IBC and other standards. We provide third party plan review services in all 50 states and parts of Canada.

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Structural Engineering


NTA has licensed engineers in all 50 states, as well as Guam and the District of Columbia. Our engineering staff includes both Code Experts and P.E.’s to ensure that each client receives above and beyond customer service.

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  • IAS Accredited
  • Member BBB
  • Member ICC
  • MHI Member
  • Member NADRA
  • Member SIPA