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Areas We Serve Across Denver & The Front Range

Thoughtful building and remodeling for homeowners who value craftsmanship, quality, and a well-managed experience.

Building & Remodeling in Denver, Boulder, and Surrounding Colorado Communities

Cillessen Construction works throughout the Denver metro area, Boulder, and select Front Range communities, with a focus on large-scale renovations, custom homes, and high-quality exterior projects. Our priority is working with homeowners who value quality craftsmanship, clear communication, and a thoughtful design-build experience. 

Denver

From established neighborhoods to newer developments, Denver is central to our work. We partner with homeowners on whole-home remodels, pop-tops, and custom projects that improve function, comfort, and long-term value.

Boulder

Boulder offers a unique mix of architecture, lifestyle, and natural surroundings. We work with homeowners here on renovations and custom homes that balance thoughtful design, quality construction, and the way they want to live in the space.

Cherry Creek

Cherry Creek is one of Denver’s most established high-value neighborhoods, and we work with homeowners on projects that call for careful planning, quality materials, and a high level of detail, from whole-home remodels to exterior renovations. 

Castle Pines

Known for its custom homes and established communities, Castle Pines is a strong fit for large-scale renovations, additions, and custom homes where planning, coordination, and craftsmanship are especially important.

Greenwood Village

We work with homeowners in Greenwood Village on remodels and additions that enhance comfort, functionality, and long-term livability while respecting the home's character.

Highlands Ranch

In Highlands Ranch, we take on a wide range of projects, including whole home renovations, exterior renovations, additions, and restoration work, helping homeowners make thoughtful improvements to their properties.

A Structured Approach Designed Around Your Project

1 | INITIAL CONVERSATION
Every project starts with a conversation about your goals, your home, and what you want to accomplish. From there, we schedule a free on-site consultation to walk the property and give you an honest picture of what's possible.
2 | PLANNING, ESTIMATE, AND CONTRACT
We map the full scope before any work begins. You get a detailed estimate, a clear contract, and a project schedule. No vague line items. No surprises.
3 | BUILD & WALKTHROUGH
A dedicated Project Manager owns your project from pre-construction through closeout. Daily updates through Buildertrend. A full walkthrough at the end. A workmanship warranty after.

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

Primary Areas We Serve:
  • Denver
  • Boulder
  • Cherry Hills Village
  • Cherry Creek
  • Hilltop
  • Washington Park
  • Greenwood Village
  • Castle Pines
  • Castle Rock
  • Genesee
Additional Areas We Serve:
  • Littleton
  • Applewood
  • Arvada
  • Evergreen
  • Cherry Hills
  • Golden
  • Louisville
  • Lone Tree
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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