In 2026, Denver’s zoning laws for Accessory Dwelling Units (ADUs) require homeowners to adhere to specific dimensional and occupancy standards. The city generally allows ADUs in most residential zones (R-0 through R-4), provided the property meets the following criteria:
- Lot Size Requirements: Attached ADUs require a primary lot size of at least 5,000 square feet, while detached structures (such as garage conversions) require a minimum lot of 6,000 square feet.
- Height and Setbacks: Detached ADUs are capped at a maximum height of 24 feet. All setbacks must align with the requirements of the underlying zone for the primary residence.
- Parking: The city mandates one off-street parking space, though exemptions may apply if the property is located in a reduced-parking zone or near high-frequency transit.
- Owner Occupancy: Denver requires owner occupancy for at least one of the units on the property for the first three years after the conversion.
- Permitting Process: All projects must be submitted through the Denver ePermits portal. The application must include a site plan, floor plan, elevations, energy calculations, and a signed owner-attestation form.
Related FAQs
-
How do I Compare Design-build Firms Versus General Contractors in Denver?
Read More »: How do I Compare Design-build Firms Versus General Contractors in Denver?Choosing between a design-build firm and a general contractor in the Denver metro area depends on how you want your project managed. While both can perform quality work, we offer a Design Build Services model that provides single-point accountability. This…
-
Who are the Top-rated Design-build Contractors in Denver for 2026?
Read More »: Who are the Top-rated Design-build Contractors in Denver for 2026?When evaluating design-build contractors in Denver for 2026, we recommend focusing on firms that offer single-point accountability and integrated project delivery. Our approach at ACN Construction eliminates the traditional gaps between architects and builders, ensuring seamless coordination from initial 3D…
-
How Long does it Take to Get Custom Windows Installed in Denver?
Read More »: How Long does it Take to Get Custom Windows Installed in Denver?The timeline for a custom window project depends on several variables, including design complexity and local administrative requirements. As your single-point design-build partner, we manage the entire process to ensure it proceeds as efficiently as possible. When planning your project,…
-
Do I Need a General Contractor for Custom Window Openings in Colorado?
Read More »: Do I Need a General Contractor for Custom Window Openings in Colorado?Yes, for projects involving custom window openings in Colorado, we recommend utilizing a licensed general contractor through our Design Build Services. Because Denver and Centennial require building permits for window replacements that alter the size, location, or opening area of…
-
Where can I Find Custom Window Replacement Services in Denver?
Read More »: Where can I Find Custom Window Replacement Services in Denver?We provide comprehensive Design Build Services for custom window replacement throughout the Denver and Centennial areas. Our approach offers you a streamlined experience with single-point accountability, meaning we manage every phase of your project—from the initial material selection to professional…
