Your Trusted Building Partner Since 1932
We are a full-service general contracting company specializing in the commercial and industrial, e-commerce, affordable housing, healthcare and wellness, education, solar, infrastructure, and tenant improvement markets. We have earned our way to the top of California’s construction industry by staying true to the vision and business practices our founder J.O. Oltmans laid down nearly 90 years ago.
Honesty & integrity
A true builder, Oltmans Construction Co. is a self-performing concrete tilt-up contractor with over 400 craftspeople in the field, committed to doing right by our business partners and teams. The core of our success is the relationships we have built centered on integrity and honesty.
trust & Transparency
As much as we are a business, we try to maintain a meaningful workplace where each person is included and valued. We are proud to have within our organization, a diverse and inclusive environment built on trust and transparency.
Our team shows up ready to put in a hard day's work. We are grateful to be able to use our expertise to build and improve our communities, allowing our reputation of excellence to speak for itself.
An American Dream Story
The Oltmans story begins in 1886 with the birth of Joseph Overwin Oltmans, born Tjark Overwin Oltmann, in Northwest Germany. After the passing of Oltmans’ father, to give her children a better chance in life, Oltmans’ mother brought the family to America when Joseph was three months old, settling in Central Illinois. 46 years later, as the Great Depression came to an end, he would create a small, humble business that extended into the 21st Century, growing to over 500 employees, overseen by three generations of the Oltmans family. The company would become one of the largest commercial and industrial contractors in Southern California.