100% Employee Owned  |  Address: 4703 Chester Drive, Elkhart, IN 46516  |  Call Us: (574) 264-0745


We are committed to providing a level of service which meets and, where possible, exceeds the expectations of all with whom we work – including both regulatory authorities and clients.
About TRA

Blazed The Trail to Standards Achievement

When TRA began there were no industry-wide standards, no cohesive body of government regulations, and no one for manufacturers to turn to for help. T.R. Arnold & Associates, Inc. has been providing services to the Manufactured Shelter/Housing Industry since 1967.

TRA is an approved Quality Assurance Agency (QAA) and In-Shop Monitor for manufactured structures in New York City. We are also approved to review manufactured structures using our licensed professional engineers for Colorado & Washington.

Our Services

Experience and Knowledge

T.R. Arnold & Associates, Inc. has been providing services to the Manufactured Shelter/Housing Industry since 1967. TRA’s services are comprised of engineering, plan review and in-plant inspection.

Engineering + Calculations

We provide calculations that support your designs or assist with your design.

Plan Review + Approval

Thorough, quality plan review and approval service for every local, state and national organization.

Inspection Services

TRA as an In Plant Inspection Agency (IPIA), offers inspection services for all levels.

Modular Recertification

TRA offers a recertification process for existing commercial re-locatable modular buildings.

Drafting + Code Reviews

Whether generic or custom, TRA has the computer drafting capabilities to meet your needs.

Utility Trailers

Leader in the inspection/listing of horse trailer and race car trailer conversions.

Credentials and Jurisdictions

We pride ourselves in staying abreast of industry trends and standards!

Latest Updates from

Our Blog

Since 1967, businesses have come to depend on T.R. Arnold for our expertise, quality, and client service. Our blog is just one of the many ways our agency can be a resource to you.