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Construction & Remodeling Services in Denver & the Front Range

High-end renovations, custom homes, and restoration projects built with precision and a commitment to exceptional experience

One Team. One Process. Built for Complex, High-Value Projects.

At Cillessen Construction, we specialize in managing complex residential projects from start to finish. Whether you're planning a whole home renovation, building a custom home, or navigating an insurance restoration, our team brings together experienced project managers, skilled craftsmen, and a structured approach that keeps everything moving forward.

We focus on larger, high-quality projects throughout Denver, Boulder, Cherry Creek, Castle Pines, and across the Front Range, helping homeowners transform their spaces with confidence. Our goal is not just to deliver a great result, but to create a better experience from the first conversation through completion.

Living room with fireplace, large windows, and modern decor in custom home in Louisville, CO by Cillessen Construction

Whole Home Remodeling

We specialize in whole home renovations and major interior and exterior transformations, helping homeowners reimagine their space while improving functionality, flow, and long-term value.

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Denver pop top renovation exterior at sunset with modern design, native landscaping, and wood accents by Cillessen Construction

Home Additions

From expanding your footprint to adding a second story, we design and build additions that integrate seamlessly with your existing home while maximizing space and livability.

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Louisville, CO custom home front elevation with symmetrical windows, stone accents, and landscaped entry by Cillessen Construction

Custom Homes

We build fully custom homes tailored to your lifestyle, lot, and vision, managing every phase from planning through construction with a focus on craftsmanship and long-term quality.

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Greenwood Village, CO luxury home exterior at dusk with patio lighting, renovated by Cillessen Construction

Exterior Renovations

Your backyard is where the best parts of summer happen. We build outdoor kitchens, sunrooms, decks, and sport courts, with siding and window upgrades to match.

 

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denver-colorado-aerial-view-of-modern-mountain-home-by-cillessen-construction-company-surrounded-by-pine-forest-and-snow

Insurance Restoration

We help homeowners navigate insurance claims and restore their property efficiently after damage, delivering high-quality results while simplifying a typically complex process.

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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

Start the Conversation

Get clear answers, expert guidance, and a team that’s ready to do it right

Tell us a little about your project and we’ll walk you through the next steps. You’ll connect with our team quickly so you can move forward with clarity and confidence.

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