Colorado’s Premier ADU Builders
Build Your Dream ADU in the Front Range & Beyond
Expert design, permitting, and construction for accessory dwelling units. Add space for family, create a home office, or generate passive rental income on your Colorado property.
Get Your Free Consultation
Free Same-Day Consultation
Quick, no-pressure assessment of your lot’s potential.
Full Permit Handling
We navigate Colorado’s specific municipal codes and HOA hurdles.
Transparent Pricing
Detailed quotes designed for the Colorado construction market.
Our Services
ADU Solutions for Every Colorado Property
From mountain-modern detached cottages to urban garage conversions, we offer a full range of services tailored to your lot, budget, and vision.
Detached ADU
Standalone backyard units offering maximum privacy. Perfect for short-term rentals or guest houses.
Garage Conversion ADU
Turn your underutilized garage into a high-end living space while maintaining your property’s footprint.
Attached ADU
Seamless additions connected to your primary residence, ideal for multi-generational living.
Basement ADU
Unlock hidden value beneath your home. A popular, cost-effective choice for Denver-area bungalows.
Prefab / Modular ADU
Precision-built units designed for faster timelines and consistent quality in any season.
How It Works
Your Colorado ADU Journey in 5 Steps
01
Free Consultation
Discuss your goals, budget, and property potential (zoning check included).
02
Design & Planning
Custom floor plans and 3D renderings that complement Colorado’s unique architectural styles.
03
Permits & Approvals
We handle the complex Denver/Boulder/Aurora permitting and utility tap fees.
04
Construction
Expert build-out using climate-appropriate materials and energy-efficient systems.
05
Final Walkthrough
Inspect every detail and ensure your new space is move-in ready.
ADU Costs
Understand Your ADU Investment
ADU construction costs in the Colorado Front Range typically range from $160,000 to $380,000+, depending on site topography, utility connections, and finishes.
Studio (400 sq ft): $160K–$210K
1-Bedroom (500–600 sq ft): $200K–$275K
2-Bedroom (700–1,000 sq ft): $300K–$380K+
Service Areas
Serving 15+ Cities Across Colorado
ADU Laws & Regulations
Know Your ADU Rights in Colorado
Colorado is leading the way in housing flexibility. Recent state legislation (like HB24-1152) has made it significantly easier for homeowners in many municipalities to build ADUs.
Expanded Zoning:
Many single-family zones now allow ADUs by right.
No Owner-Occupancy Requirement:
In many cities, you are no longer required to live on the property to rent out an ADU.
Simplified Parking:
Reduced or eliminated off-street parking requirements near transit corridors.
Standardized Setbacks:
Clearer rules on how close you can build to your property line.
FAQs
Common Questions About ADUs
What is the difference between a tiny home and an ADU?
In Colorado, the difference comes down to permanence and the building code. An ADU (Accessory Dwelling Unit) is a permanent structure built on a foundation that complies with the International Residential Code (IRC). A “tiny home” is often built on wheels; under Colorado law, those are typically classified as RVs and face stricter “length of stay” limits in cities like Denver or Boulder. For a tiny home to be considered a legal ADU in Colorado, it generally must be removed from its wheels and attached to a permanent foundation.
Can I put an ADU on my property in Colorado?
Almost certainly yes if you live in an urban or suburban “subject jurisdiction.” Thanks to Colorado’s HB24-1152, most cities along the Front Range are now required to allow at least one ADU on any lot with a single-family home. Furthermore, the law now prevents many HOAs from flat-out banning ADUs, though they can still enforce “reasonable” design standards.
Do I need to live on the property?
How to build an ADU in Colorado?
The process has been streamlined by new state mandates:
Zoning Check: Verify your local setbacks—state law now protects your right to build units between 500–750 sq. ft. in most areas.
Administrative Approval: Most Colorado cities must now use a “by-right” approval process, meaning no public hearings or neighbor notifications are required.
Utility Planning: You’ll need to coordinate with providers like Denver Water or Colorado Springs Utilities regarding “tap fees” and connection points.
Construction: We handle the build, ensuring your ADU is insulated for Colorado winters and meets all local fire and safety codes.
How much does an ADU cost to build?
In Colorado, custom ADU construction typically ranges from $160,000 to $350,000+. Factors unique to our state—such as the need for deep footings due to the frost line and the high cost of local “tap fees” for water and sewer—contribute to the total. Garage conversions remain the most affordable entry point, starting around $80,000–$120,000.
Can I build an ADU on any property?
Most single-family lots in California are eligible. We’ll evaluate your property’s zoning, setbacks, and utility access during your free consultation.
Is it cheaper to build an ADU or buy a prefab ADU?
Prefab is often cheaper for the structure itself, but the total project cost can be similar to a site-built unit. While a factory-built “modular” unit can save 10–15% on labor and protect materials from Colorado’s unpredictable weather, you still have to pay for the foundation, utility trenching, and crane rental. Many Colorado homeowners choose site-built ADUs because they are easier to customize to match the “Mountain Modern” or “Denver Square” aesthetic of the main house.
Ready to Build Your ADU in Colorado?
Get a free, no-obligation consultation. We’ll assess your property and give you a clear roadmap. Click the button below to talk to our ADU expert.
Get Your Free Consultation
Colorado ADU Builder
Serving the Greater Denver Metro and Front Range with expert design and construction.