Lock Steel Building Company, Inc.


Lock Steel Building Company, Inc., has been a Midwestern leader in steel buildings and based out of Carrollton, MO, for over 65 years. Founded in 1946 by brothers Herb and Bob Lock as part of Lock Brothers, Inc., Lock Steel Building has supplied and erected quality metal  buildings for numerous agricultural, commercial, industrial, projects throughout the Midwest.

In 1971, Herb’s son, Don, joined the business and led with his knowledge and expertise for over 35 years. In 2000, Don’s son, Matt, accompanied his father and gained the experience passed on from the previous generations.  Today, Matt Lock, grandson and nephew of the founders, oversees the day to day operations from sales to project management.

Herb with grandson Matt

Though the majority of our work is located within a 100-mile radius, many customers’ needs have sent the company across the nation. Lock Steel Building is proud of the nearly 2000 clients and relationships that have been developed.

Lock Steel is a proud member of the Carrollton Area Chamber of Commerce, Missouri Farm Bureau, active supporters of the local Economic Development and supporters of various local organizations.  We not only believe in building quality steel buildings, but building the future of our own community, as well as those communities we help build.

Lock Steel Building Company, Inc., plans to continue a lifetime of successful, long-lasting relationships with our past and future customers. We promise to provide you with maximum quality pre-engineered steel buildings, with prompt and friendly customer service—that’s a family guarantee.