About Drennen Custom Contracting

Arnie Drennen

Founder

Arnie founded Drennen Custom Contracting in 1973, building the company one project—and one relationship—at a time. His commitment to quality craftsmanship, honest service, and treating customers like neighbors established the values that still guide DCC more than 50 years later. Although the company has grown and evolved, Arnie's influence remains at the heart of everything we do. Around here, he is not just the founder—he is where the Drennen story began.

Scott Drennen

Director of Roofing

For Scott, roofing is part profession and part family legacy. He grew up around the Drennen office and began working alongside his father, DCC founder Arnie Drennen, as a teenager. Those early years gave him a hands-on education in craftsmanship, problem-solving, and treating customers fairly. Today, Scott's passion and dedication drive DCC's roofing department. He is committed to giving Northern Colorado homeowners the best-quality roof possible at the lowest responsible cost—because a great roof should protect both your home and your budget.

Rafe

Director of Operations

Rafe is the mastermind behind the moving parts of Drennen Custom Contracting. A sharp thinker and true jack-of-all-trades, he oversees every department while keeping the company focused on its larger mission. Whether he is solving an operational puzzle, improving a process, or helping a department rise to a new challenge, Rafe is constantly pushing DCC forward. His high standard of excellence shapes everything we do and ensures that, even as the company grows, quality, integrity, and service remain at the center of the operation.

Poppy

Officer of Staff and Organizational Effectiveness

Poppy works primarily behind the scenes, making sure the people—and the systems supporting them—have what they need to succeed. She cares for the DCC team through human resources, analyzes company data, and serves as the Directors' primary support as they lead their departments. As Rafe's right hand, Poppy helps turn DCC's high standards into consistent everyday practices. Her work keeps the company organized, the team supported, and every department focused on what matters most: keeping our community happy, protected, and safe.

Seth

Director of Radon

Seth has the kind of engineer's brain that genuinely enjoys a difficult problem. Complex foundations, unusual crawlspaces, and challenging system designs are where his creativity and technical thinking shine. As Director of Radon Mitigation, Seth leads his team with a clear goal: install the most effective, thoughtfully designed, and aesthetically pleasing radon systems possible. He stays current with evolving technology, research, and industry practices so every system reflects the best knowledge available—not simply the way things have always been done.

Dan

Director of Testing Division and Lead Radon Estimator

Dan brings decades of radon experience—and an impressive supply of curiosity—to every home, estimate, and conversation. His commitment to continuing education keeps Drennen at the forefront of radon measurement and mitigation practices, while his passion for community outreach regularly takes him beyond the office. Whether he is evaluating a property, helping design the right solution, or providing a free educational lecture, Dan has a gift for making complex radon science practical and understandable. For him, knowledge is most valuable when it helps keep our Northern Colorado community safe.

Sierra

Administrative Assistant

Sierra supports the Drennen team with scheduling, customer communications, and day-to-day office coordination. Her attention to detail and calm, professional manner help keep projects on track and customers informed from first contact through project completion.

Bo

Administrative Assistant

Known around the office as "Captain Sunshine," Bo brings warmth, positivity, and a reliably cheerful presence to Drennen Custom Contracting. As an Administrative Assistant, Bo helps customers and coworkers by answering questions, coordinating information, and making sure important details reach the right person. Whether the office is running smoothly or the day has taken an unexpected turn, Bo is always ready to lend a hand—and usually brighten the room in the process. That combination of helpfulness and good humor makes Bo an important part of keeping DCC welcoming, organized, and moving forward.