Select Page

About TWC

Over a span 60 years, we’ve served the Veterinary, Pet Hospitality, Dental, Death Care industries by providing consulting, custom design, and construction services.  

Our Services

Design & Build

Architecture & Engineering


Industry Specific Equipment

IT & Tech Services

Our Step-By-Step Proprietary Process

The feedback we receive most often is how clear and straightforward our design and building process is.  Here’s how it was developed:

Back in 1963, when John TerWisscha struck out on his own as a Contractor, he had one truck and a dream.  His “process” involved talking around a kitchen table over coffee and cookies, with homeowners who wanted a quality home built for a growing family.

This heritage of truly listening and collaborating with the Client has been passed on and held tightly through the years.



As TWC grew into specific industries, like Veterinarian Clinics and Dental Offices, it became apparent that a specific step-by-step, guided process was required.  This allows the current team to protect a space for communication, just like John did.

The next generation of TerWisscha Construction owners claimed this process as a roadmap: necessary for cost-saving efficiencies AND a stellar end result.

Trust us when we say, “Each step is strategic, instructive, and designed for the benefit of the Client (and their Clients).”

Years Established

Completed Projects

Featured Projects

Regarding Dentistry

Waconia, MN

Eagle Animal Hospital

Riverside, MO

Cedar Valley Veterinary Center

Cedar Falls, IA

We’ve Been Designing & Constructing
For Over 58 Years

TerWisscha Construction, Inc. (TWC, Inc.) has been providing professional services from architectural design to construction services since 1963. The ingenuity and integrity that TWC team members possess has given them the reputation of being the leading source for the markets they serve; Veterinarians, Dental Professionals, and Funeral Directors.

TWC has over 60 employees and two office locations, with the main headquarters located in Willmar, MN, and a sales office in Sunbury, PA

Questions About Your Project?

“This clinic, with all the time it took to develop it, is SO comfortable to work in.  It was purpose built.  It so so much more efficient, our techs are able to utilize their skills effectively.  It’s amazing how well this clinic flows compared to what it used to.”

Contractor Advisory Board

Contact Us

TerWisscha Construction, Inc. Headquarters:

1550 Willmar Ave. SE
Willmar, MN 56201

Privacy Policy | Terms of Use | Employee Portal
Copyright 2023 TerWisscha Construction, Inc.