top of page

About Us


In February of 1991, Garry J Mertz, a local contractor, and his wife Monica, purchased United Building Center in Ellendale, ND and opened Mertz Lumber & Supply. In July of 1996, a second lumber yard was opened in Oakes, ND. Both lumber yards are proud to provide quality in building materials and service to their customers. 

Mertz Construction has continued serving the area since 1981. The crew is experienced in quality residential and commercial construction and remodeling, along with cabinet and furniture making. By using the products we sell, we gain knowledge in assisting other contractors and customers with their material purchases.

Mertz Construction & Supply, Inc. holds a Class 'A' North Dakota Contractor License. Garry served 3 terms on the board of the ND Retail Lumber Association and 2 terms as the ND representative on the board of the Northwestern Lumber Association, which serves a 7-state area.

If you have a building project in your future, we would love to earn your business. We supply, design, and deliver to make your project a success. 

We're proud to have the below full-time employees as part of the business.  Their years of service are in parentheses.

ellendale employees.jpg

Mertz Lumber & Supply - Ellendale

L-R:  Paul Wedell (32); Chris Cheetham (12); Doniven Lynnes (32)

Oakes yard_edited_edited.png

Mertz Lumber & Supply - Oakes



Mertz Construction

L-R:  Brent Nell (29); Mike Titus (20); Mark Fuller (32); Shannon Niva (25); Jacob Preus (not pictured) 

bottom of page