Our Mission

Our company takes pride in using our own crews to construct what we do best – producing an efficient and unique structure to meet your needs while being cost-competitive. We train and work hard to bring you the best built, highest quality building product for you to enjoy in the years to come.

We strive to understand your purpose with functionality to your pole building purchase. See what sets Greiner Buildings apart in the post-frame industry.


Our Story

Greiner Buildings began in the 1980s by owner, Tom Greiner, in his hometown of Washington, Iowa. Based on a foundation of honesty and integrity we have grown to over 35 employees with three additional offices located in Kewanee, Illinois, Des Moines, Iowa, and Minonk, Illinois, to better service your pole building construction needs. Greiner Buildings has enjoyed being a family-owned business and creating solid relationships with our customers. Tom’s son, Matt, is now the Owner/CEO and Executive President of Greiner Buildings and serves on the NFBA Board of Directors. Longtime employee and Executive Vice President, Shawn Redlinger, is also part owner of Greiner Buildings, Inc.

Years Experience
States Served
NFBA Awards
Customers Served

The Greiner Buildings Metal Post Frame Pole Building Team

Greiner Buildings takes pride in our knowledgeable post-frame sales team, pole building designers, and pole barn building crews. We understand quality pole barns inside and out, including metal building design and post-frame construction. We specialize in crafting especially unique pole buildings with creativity in the post & frame metal building design process. We proudly service Iowa and Illinois with our post frame construction, known for using only our own crews, design, and sales teams.

Greiner Buildings Washington TeamOI7A9982

Washington, Iowa Post Frame Team

Servicing Eastern Iowa and Central Iowa with pole building construction, plans, and service.

Greiner Buildings, Des Moines

Des Moines, IA Post Frame Team

Greiner Buildings Des Moines Branch constructs pole barns across Central and Western Iowa.


Kewanee, IL Post Frame Team

The Kewanee Team services and constructs our post frame buildings across Western Illinois.

Minonk, IL Post Frame Team

The Minonk Team services and constructs our post-frame buildings across Central and Eastern Illinois.

The Greiner Buildings Construction Crew


Demonstrating professionalism and expertise throughout the pole building construction process, our crews ensure your project is built to your satisfaction while making sure it is completed safely. Our crews attend multiple training seminars throughout the year covering industry standards and have received the Gold Level Achievement award from the NFBA for their safety program. Greiner Buildings also alleviates the necessity for our customers to carry additional insurance by placing Builders Risk coverage on all projects.

What do our customers say?

“Excellent reviews. Good to work with. Good group of guys. Always picked up the mess at the end of the day.” 

- Jeff I., Washington, Iowa

Sales staff was very helpful. They kept me updated on the progress the entire time and went out of their way to make sure I was satisfied before they wrapped things up. Thanks, love the new building!”

-Michael B., Nevada, IA

“Best price and great salesmen. Very good work crew they were very knowledgeable and did a great job on our building."

–David J., Brimfield, Illinois

“I have worked with Greiner Buildings on 4 projects on my farm over the past 20 years and every experience has been great, I don’t go anywhere else for my farm building needs.”

–Sean W., Williamsburg, Iowa

“GB offers many options that allow a person to customize the building to fit their wants/needs. I now have the dream shop I always wanted, because of the experience & knowledge of Greiner Buildings.”

- Brandon C., La Crim, IL


“Good price and knowledge of buildings and features. Great looking building that was done according to my specifications.”

- Chris W., Davenport, Iowa

–Chris G., Washington, Iowa

“Good reputation, promptly responded to calls, fair pricing. Building representative was very nice and easy to work with.”

–Erik E., Iowa City, IA

“We felt the quality of the materials and workmanship plus the reasonable price was the best combination to meet our needs.”

- Lawrence O., Morse, IA

“Trusted them just by what others had said. They are good people to work with.”

- Tom J., Hillsboro, IA

The Greiner Difference

Quick Quotes

Because your time is important.

Better Materials

Because you want a building that lasts.

Because craftsmanship matters.

Complete Building Services

Because you don't need any stress.

Iowa and Illinois Accredited NFBA Builders. Washington, Clive, Kewanee, Quad Cities, Muscatine, Burlington, Des Moines, Ankeny, Winterset, Cedar Rapids, Iowa City, Solon, North Liberty, Mount Pleasant, Fairfield, Pella, Tipton, Williamsburg, Newton, Keota, Sigourney, Hiawatha, Marion, Columbus Junction, Wapello, Oskaloosa, Knoxville, Marshalltown, Altoona, Urbandale, West Des Moines, Bettendorf, Davenport, Ames, Kalona, Riverside, West Liberty, Princeton, Geneseo, Galesburg, LaSalle, Dixon, Rock Island, Moline, Wyoming, Sterling. Iowa and Illinois Quality Built Post Frame Pole Barns.