Our Team

Our Story

Greiner Buildings was founded in the 1980s in Washington, Iowa. Over the years, what was once a local family business has grown into an established pole barn construction company with over 60 employees and 4 offices across Iowa and Illinois. Matt Greiner is the Owner and COO of Greiner Buildings and serves on the National Frame Building Association (NFBA) Board of Directors.

Greiner Buildings’ strong values and humble Midwest roots have paved the way for expansion and strengthening of the business. We challenge the status quo and continue to establish new standards of excellence within the post frame construction industry. We seek out and utilize the highest quality of materials, design one-of-a-kind, award-winning buildings, and hire the most reliable and professional employees. As the business continues to grow, we stay grounded in our constant focus on creating the best experience for our customers.

Vice-President and company founder Tom Greiner enjoys his time out with the crew members building. Getting away from the hustle and bustle of the office Tom is frequently seen on the job sites coaching and guiding members to the next level.

Our Mission

Here at Greiner Buildings, it is our job to create the building of your dreams – from start to finish, with your complete satisfaction in mind. Whether it’s a machine shed for your farming operation, the pole building home that you’ve been saving for, or a state-of-the-art event center for your new business – you can rest assured that your project is a priority for us.

We provide the custom, individualized care that significant pole building construction projects require with the efficiency and scale that it takes to get your project done on time and on budget. With more than thirty years as pole barn builders, our level of professionalism and expertise is unmatched. Don’t believe us? Just take a look at what our customers have to say. Our clients come back to us time and time again because they recognize the value of working with Greiner Buildings. Give us a call today to tell us about your next project.


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Years Experience
States Served
Building Awards
Customers Served

We Are The Pole Barn Builders You Can Rely On

Greiner Buildings takes pride in our knowledgeable sales team, designers, and construction crews. We understand post frame construction inside and out, including the metal building design, material selection, and build process. We always start a project by developing a 2D or 3D design of your building and can even serve as your pole building contractor throughout the process, making construction easy and efficient for you.

greiner building pole barn construction crew building post frame

Our Pole Barn Construction Crews Are The Best In The Business

The pole barn build is the most important step in the entire process. That’s why our construction crews are made up of only in-house Greiner Buildings employees. We carefully hand-pick them and train them to make sure your building is made with the utmost quality and care. Demonstrating professionalism and expertise throughout the pole building construction process, you can rely on our pole barn construction crew to get the job done.

Safety on the job site is a top priority. Our crews attend multiple training seminars to fully understand industry standards and we are proud to have received the Gold Level Achievement award from the NFBA for our safety program. Greiner Buildings also alleviates the necessity for our customers to carry additional insurance by placing Builders Risk coverage on all projects. The bottom line is – you can rely on our crew for a safe, efficient, and high-quality build.

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 and Sterling. Iowa and Illinois Quality Built Post Frame Pole Barns.