Why Denver Homeowners Trust Cillessen Construction
A straightforward process, an experienced team, and the kind of communication that keeps your project moving with confidence
What You Can Expect From Cillessen Construction
A major renovation or custom home is a significant investment. You want to know that the team you choose will communicate clearly, plan carefully, and bring the experience needed to manage a complex project from start to finish.
At Cillessen Construction, we work with homeowners throughout Denver, Boulder, and the Front Range on whole-home renovations, additions and pop-tops, custom homes, and exterior renovations. Our approach is centered on quality craftsmanship, clear communication, and a strong client experience from the first conversation through the final walkthrough.
What Makes Cillessen Construction Easy to Work With
For homeowners comparing a Denver design-build remodeler or custom home builder, trust comes down to more than the finished photos. It’s also about knowing how the team will communicate, plan, and manage the work along the way.
- 5.0-star Google rating from 115 reviews
- Same-business-day communication during working hours
- A dedicated Project Manager for your project
- Detailed estimates and clear contracts
- Proactive planning to help minimize surprises
- Skilled craftsmen and qualified subcontractors
- Buildertrend updates throughout construction
- Workmanship warranty after your project is complete
We do our best to ensure your project is managed with care, attention to detail, and clear communication from start to finish.
A Family-Run Colorado Construction Company
Cillessen Construction Company was originally founded by Heath Cillessen's father. After years of working in the construction industry himself, Heath reopened the company in 2013 and carried the family name forward.
Today, Cillessen Construction brings together experienced project managers, craftsmen, and trade partners to complete complex residential projects throughout Denver, Boulder, and surrounding Front Range communities. The goal is straightforward: do quality work, communicate clearly, and give clients thoughtful guidance throughout the experience.
Questions Denver Area Homeowners Ask Before Reaching Out
Curious about what to expect? Here are answers to some of the most common questions homeowners ask us.
- What types of projects are the best fit for Cillessen Construction?expand_more
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We specialize in larger residential projects, including whole-home renovations, additions and pop-tops, custom homes, and high-end exterior renovations. If you're considering a substantial change to your home and value quality craftsmanship, careful planning, and clear communication, we'd be happy to learn more about what you have in mind.
- How much should I budget for a major renovation in Denver?expand_more
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Every home and scope is different, but the large-scale whole-home renovations and additions we take on often fall within the $300,000 to $3 million range. Custom homes typically begin around $2 million. Existing conditions, structural changes, design complexity, materials, finishes, and the overall scope of work can all affect the final investment.
The best way to understand what may be realistic for your home is to start with a conversation about your goals and priorities. - Do you help with design and planning?expand_more
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Yes. We guide clients through planning, scope development, and selections so the project is well thought out before construction begins. Our team will guide you through the selections process throughout your project.
- How will I know what's happening during construction?expand_more
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You'll have a dedicated Project Manager who is responsible for your project from pre-construction through closeout. During construction, we use Buildertrend for progress information, photos, and project communication, along with direct communication from our team.
- Where does Cillessen Construction work?expand_more
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We complete major residential projects throughout Denver, Boulder, and select Front Range communities, including Cherry Creek, Greenwood Village, Castle Pines, Evergreen, Genesee, Golden, and surrounding areas. The service area can vary depending on the type and scope of the project.
A Structured Approach Designed Around Your Project
Explore Recent Projects Built With Quality and Attention to Detail
Planning a Custom Home or Major Renovation? Start With the Numbers.
Understanding what affects cost is an important first step when you're considering a major investment in your home.
Our Custom Home Building & Renovation Cost Guide can help you understand the factors that shape project pricing, how scope and selections affect your investment, and what to consider as you begin planning.
- Real project cost ranges for remodels, additions, and custom homes in the Denver and Front Range area
- Insight into what drives pricing so you can plan your investment with confidence
- Guidance to help you avoid costly mistakes and choose the right type of project for your goals
Where We Work
We work across the Denver metro and the Front Range, from whole-home renovations and additions to insurance restoration work that takes us throughout Colorado and into southern Wyoming. Wherever the project is, the standard is the same.
If you don't see your area listed, reach out. We may still be the right fit.
Our Service Area
- Denver
- Boulder
- Cherry Hills Village
- Cherry Creek
- Hilltop
- Washington Park
- Greenwood Village
- Castle Pines
- Castle Rock
- Genesee
- Littleton
- Applewood
- Arvada
- Evergreen
- Cherry Hills
- Golden
- Louisville
- Lone Tree
What Our Clients Say
"Cillessen have done several reconstruction and remodeling projects for us and have always done a superb job. We’ve worked with them for 5 years and have come to know some of the workers who have been there for years. We’ve seen them move up, get new positions and grow. They are true craftsmen and artisans. We recommend Cillessen highly."
John Schmaus
"Dylan and Kurt did a great job. Very professional job. The work looks great and it was done right. And got me those supplements from the insurance company. thanks guys"
Michael Bingham
"Excellent general contractor with top-quality workmanship. The team was punctual, reliable, and paid great attention to detail. They completed the project on time and kept me updated throughout the process. The final result exceeded my expectations. I’m very happy with the service and highly recommend them."
Ashley McKee
"I’ve had the opportunity to interact with Devon professionally and have consistently been impressed with his integrity, communication, and attention to detail. He runs a thoughtful, organized operation and clearly takes pride in doing things the right way. I wouldn’t hesitate to recommend Cillessen Construction Company to those looking for a quality contractor."
Ryan Koelling
"Devon at Cillessen is great to work with. I'm a local Realtor and I refer all my clients exterior needs to Cillessen. Not many exterior companies work with Vinly siding anymore and Cillessen does and beats the competition."
Robert Glenn
"Devon and Cillessen Construction are top notch. They honor their word and commitment to honest estimates and working with clients on insurance claims. They deserve a call if you have roofing or other exterior challenges or needs."
Holly Johnson
"Devon and Heath are incredibly competent, compassionate and capable to do more to serve their clients than anyone I have worked with."
Mark Brende
Ready to Talk About Your Project?
Whether you're planning a major renovation, an addition, a custom home, or an exterior project, the first step is a conversation. Tell us what you have in mind, and we'll help you understand what’s possible and what the next steps look like.