AC/a remains fully operational during these challenging times with COVID-19, prepared to serve clients’ needs safely without interruption.  We have made sure our staff is safe but working, so that we can carry on our services to our clients.  We encourage you to continue to use our email addresses and phone numbers you typically use.

Auth Consulting & Associates

Auth Consulting & Associates is a multi-discipline, engineering firm providing  planning, engineering, building design, and surveying services to individuals and commercial/ industrial entities within the agriculture, glass, manufacturing, medical, mining, municipal, residential development, transportation, and water and sewer industries throughout the United States.









What We Offer

Auth Consulting & Associates has been providing innovative engineering services for over 20 years. As our employees grew from two people in 1995 to the 25 employees we have today, our services have also grown to meet the engineering and regulatory challenges that affect our clients wherever they are located. Planning, engineering, building design, and surveying; AC/a is there providing the personalized service and innovative solutions you’ve come to expect.

Responsive. That’s how clients overwhelmingly describe their experience with AC/a.  It’s the hallmark of who we are as a company and the basis for everything we do from planning, building design, engineering to surveying services. The AC/a staff provide practical solutions when you need them.  It’s just the way we do business.

Auth Consulting & Associates will provide innovative, cost-effective planning, engineering, building design, and surveying solutions to individuals, commercial and industrial enterprises, and public institutions that are safe, sustainable, and give our clients a competitive edge.

Our Work Flow

Talk To Us

When you call AC/a, you get a real person on the phone, not a complicated voice mail system. You’ll be referred to the appropriate team member for your project and if they are unavailable, they’ll get back to you soon – really!

Initial Consultation

We’ll meet with you on-site to work out the scope of your project, at no charge. We’ll discuss possible challenges, alternatives, and methods to meet your project needs.  Following that, we’ll provide a detailed project scope of services and cost estimate for your review and approval.

AC/a Works

We get to work; planning, engineering, designing, and surveying.  We’ll work with regulatory,  municipal bodies,  and project vendors on the approval process.  An AC/a representative will be onsite, if needed, to manage overall construction and ensure the integrity of the project.


The Durand School District has a long-term relationship with AC/a – they’ve done a variety of projects for us and are involved in the mechanical engineering of the District’s new building/remodeling projects. They understand what you need and what your staff can control. Their project designs are cost effective and practical. AC/a is easy to work with and responsive to our needs.

Greg Doverspike

Superintendent, Durand School District, Durand School District, Durand, WI


I had a big rezoning project. Matt Hieb walked me through the process and suggested setting up two lots to make it easier for future expansion or sale, something I wouldn’t have thought of. He attended meetings and stayed in touch with the city planner to make sure the whole process kept moving. AC/a was prompt in everything they said they’d do. Impressive!  

Randy Deiss

River Falls, WI

Mechanical Engineering

AC/a worked with Polaris on various design/build and renovation projects to our manufacturing facility over the past ten years. They’re very good at working within budget constraints, tight timelines, and our particular challenge of increasing production capacity without expanding beyond our current blueprint. They understand what we need, are available when we call, and are easy to work with.

Chuck White

Plant Services Supervisor, Polaris Industries, Osceola, WI

Auth Consulting & Associates

Providing innovative engineering services for all your building needs.