Costs vary by type: detached ADUs run $200–$350/sq ft, garage conversions $80–$150/sq ft, and basement ADUs $60–$120/sq ft. A typical 600 sq ft detached ADU costs $140,000–$200,000 all-in. We offer free ROI analysis to help you understand your specific project costs.
From first consultation to move-in typically takes 10–18 months: 1–2 months for design, 3–6 months for permitting, and 4–8 months for construction. Denver’s streamlined process can be faster.
Most single-family properties in Colorado metro areas can now support an ADU under 2024 state law. Lot size, setbacks, and utilities are the main constraints. Our free site assessment will tell you exactly what’s possible on your property.
No — Colorado law eliminated owner-occupancy requirements for most jurisdictions. You can rent both your main home and your ADU simultaneously.
Detached backyard cottages typically command the highest rents ($1,800–$3,500/month) due to privacy and separate entrance. Garage conversions offer the best return-on-investment given lower construction costs.