Serving Northern Colorado
and Southern Wyoming
since 1973

Specializing in:


Radon Mitigation
Energy Star® Home Efficiency
Roofing Installation / Repair
Remodeling / Restoration


Mailing: PO Box 272167
Fort Collins, CO 80527-2167

Office: 608 East Trilby
Fort Collins, CO 80524

Phone: (970) 482-9100
Fax: (970) 266-9123

Drennen Custom Contractors has an A+ Rating with the Better Business Bureau.  Click here to see our rating listing.

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About Drennen Custom Contracting...

Arnold Drennen, Drennen Custom ContractingArnold Drennen and Drennen Custom Contracting have been remodeling homes in Ft. Collins, Northern Colorado, and Southern Wyoming since 1973. Services include roofing, new and remodeled bathrooms, kitchens, basements, additions, all areas of repairs and in 1980 added Radon Testing and Radon Mitigation Services.

Arnie Drennen has personally managed his company since its inception and continues to offer his customers his personal attention to insure quality and professionalism.

Drennen Custom Contracting, in keeping up with customer’s needs, is now an Energy Star Preferred Contractor offering home analysis. Discover the causes and solutions for cold rooms, frosty windows, back-drafting water heaters, mold and high-energy bills. Find out what Home Performance with Energy Star® is all about.

The Staff of Drennen Custom Contractors