Custom Home Builder Serving Northern Colorado

Committed to your dream


Rely on Big Horn Custom Builders in Fort Collins, Colorado to design and create a home that reflects your personality and accommodates your lifestyle. Harness our 35+ years of expertise from hands-on, master craftsmen with the know-how to bring your vision to life. We have managed everything from custom log homes to ultra-modern luxury homes to commercial buildings to restoring an historic 1870s cabin.

What We Do


From first sketch to finishing touches, we are your partners at each stage of the building or remodeling process of your home. Whether it’s the rustic elegance of mountain timber homes or the flair of contemporary designs, we can create the look that fits your lifestyle and your budget.

How Big Horn CUSTOM BUILDERS is Different



Randy Gillen founded Big Horn Custom Builders in 1996. Due to hard work and positive word-of-mouth from our past clients, we have established a stellar reputation for custom home construction services in the communities we serve.

Big Horn Custom Builders partners with local resources and only selects subcontractors we know well and trust. By employing professionals we personally know to be skilled, responsible, and dependable, we are able to accomplish our tasks efficiently and provide the best possible output.

Ready to start planning for your new home?

Randy Gillen (Big Horn Custom Builders) built my home in 2019. This was my dream home and the fourth custom home I had built. It was by far the best experience I have had with a custom build. My home was built in 8 months; most comparable custom homes in my area took 12 to 24 months to complete.

CHUCK B. (RETIRED DEVELOPER)