Why Big Horn?

Full-Service Custom Home Builder in Fort Collins, CO

At Big Horn Custom Builders, we pride ourselves on our ability to create homes that perfectly suit our clients. Our team of artisans can design and construct several types of properties. In addition, we offer reconstruction, renovation, and remodeling services. We take on both residential and commercial projects for clients in Northern Colorado.

Our team can help you work within homeowners’ association requirements. For your peace of mind, we are licensed, bonded, and insured.

Why Choose Us?

We believe that homebuilding is an art, and we are passionate about our craft. Our team pays keen attention to detail and is dedicated to providing exceptional customer service. We make sure to hire only experienced and skilled craftspeople who are truly passionate about building. To ensure quality results, we only employ subcontractors with excellent project and client references.

To ensure our clients’ satisfaction, we communicate with them. We listen to their needs and treat them as valued partners in the design and construction process. 

We work with integrity and professionalism. You can be confident that you will get no surprises when it comes to costs or scheduling. In addition, when we work on your property, we will treat it as carefully and respectfully as if it were our own.

Who We Are

Meet Randy Gillen, Owner and Founder of Big Horn Custom Builders

Randy, a professional and caring individual with small-town values, grew up in a rural farming and ranching community. He put himself through college at Colorado State University by working in the construction industry. During this time, Randy learned the tricks of the trade and the importance of quality craftsmanship.

His first construction job was for a custom home builder who was also a third-generation German master craftsman. Randy enjoyed learning to an artisan himself, and he took great pride in being taught by one of the best in the industry.

In his spare time, Randy enjoys relaxing on a river with a fly rod in his hand. An avid fly fisherman, Randy enjoys living in Colorado and appreciates all it has to offer. On his free time, you can find him relaxing on a river with a fly road in his hand.


Big Horn Custom Builders were featured in Cabin Life Magazine, Style Magazine, and other coffee table books for the renovation and recreation of the oldest log cabin in Colorado. That project is just one of the many custom builds that set our company apart and helped solidify our excellent reputation in the industry. 

What Our Clients Are Saying

“We are repeat customers of Bighorn Custom Builders. In two consecutive remodeling projects we have had a very positive experience. With Bighorn the customer is always right but not without opportunity for choices as Randy brings a wealth of knowledge, experience, and ideas to every aspect of the job. A key business feature that Bighorn offers is that there are NO surprises related to scope, cost, or schedule. Everything is laid out in detail and tailored to fit the customer’s needs before the job is started.”

Both of our projects, the original cost plus the change order results that are part of any large project were very reasonable and the projects were completed on schedule. In addition to positive costs and schedule results, the craftsmanship was superb as Bighorn added even the smallest detail.

Bighorn subcontractors are as skilled as the core employees. Having the job done right while respecting the property and personal lives is an obvious priority to Bighorn. Bottom line is Bighorn cares about the customer and it shows! It is safe to say we already know who we will be turning to for our next project.”

Michael and Tammy Whatley

“We loved our neighborhood but our empty nest house felt and looked battered, tired and beyond hope. We thought we'd have to move and start all over with the work of making a house a home. It was a lucky day when a friend came to our rescue by referring us to Bighorn Construction.

 Randy came in and asked us what we wanted from the house, what was wrong and what we liked. They listened, looked and worked with us, within our budget, to change our worn out house to a WOW home!

 Big Horn has the vision and skills to make dreams come true and the integrity to live up to their promises. Thank you, Big Horn, you are the best!”

Jim and Jentha Boswell, Fort Collins, CO

“Bighorn Custom Builders has completed several projects for me over the last few years, including the complete renovation of the 1878 Hardin cabin in Red Feather Lakes and the Fearless Cottage in Boulder.

 I have found Bighorn Custom Builders to provide quality craftsmanship along with a professional and personable attitude. I would highly recommend Bighorn and us them again in the future.”

Alex Bogusky

Connect With Us

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