Mark Rannells
Mark offers 40+ years of experience with Berens Construction, Inc. Originally from Dunlap, IA, Mark has played an important role in maintaining the Berens Construction value. As a lead siding installer for over 40 years, Mark has completed thousands of siding projects throughout his career. He enjoys playing in his band, staying active, and watching sports.
Carter Hack
Carter offers 40+ years of siding installation experience. Like Bob & Mark, he is originally from Dunlap, IA. Carter is a subcontractor for Berens Construction. Dedicated to his craft, he also likes woodworking, playing in his band with Mark, and gardening.
Andy Mahlberg
Andy offers 20+ years of experience with Berens Construction, Inc. Originally from Panama, IA, Andy is versatile installer. With alot of experience in windows, siding, doors, and remodel, Andy contributes on all levels of workmanship and installation. He resides in Omaha and also owns property in his hometown. Andy enjoys music, riding his Harley, and spending time with his family.
Angelo John
Originally from Omaha, NE, Angelo is the newest member of our team. Now on his 5th year with Berens, Angelo is refining his craft and becoming versed in home exterior remodels. He also assists in sales and project management. Before Berens, he worked at a family-owned and operated concrete business as a laborer and finisher. A UNO graduate, Angelo spends his off time with friends, family, and staying active with recreational sports and gym.
Our Birth
Our Birth- Berens Construction, Inc. was founded by Bob Berens in 1976. Bob grew up in Dunlap, IA, and moved to Omaha, NE after he graduated high school.
In an effort to make extra cash, (due to a low paying job), he borrowed tools from a neighbor and worked to complete small construction jobs on the side. He soon realized he had an eye for exterior home remodeling, and started landing subcontract work frequently. His successes as a subcontractor eventually led to the idea of starting his own business.

Time to Get Bigger
Berens Construction, Inc. built a free standing office and warehouse, and moved the operation to Gretna, NE. This move proved to be a fruitful one, as the company became one of the top exterior remodeling companies in Gretna and surrounding areas.


Passing the Torch
A year prior, Zach Sciscoe started working for Berens Construction, Inc. He started as a laborer, and worked his way up to sales, and project management. Zach was instrumental in the growth of roofing services.
In 2015 Zach and Molly Sciscoe became the owners of Berens Construction, ensuring that the company will stay current and grow for the next generation.
Coming Home
In an effort to have the family business closer to home, and in a more central location, Berens Construction moved their offices back to Omaha, NE. While Berens moved its offices and showroom back to Omaha, they continue to provide window, siding, roofing, doors and more to all of Omaha and surrounding areas!