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
-
What is the Average Cost Range for a Professional Exterior Door Frame Replacement?
Read More »: What is the Average Cost Range for a Professional Exterior Door Frame Replacement?When determining the cost for an exterior door frame replacement, it is important to understand that no single price fits every home. We provide custom quotes based on a professional site inspection because several variables significantly influence the final investment.…
-
How do You Clean Matte Black Window Frames without Damaging the Finish?
Read More »: How do You Clean Matte Black Window Frames without Damaging the Finish?To clean matte black window frames without damaging the finish, you must avoid harsh chemicals and abrasive tools that can permanently strip the matte coating or cause dull patches. We recommend following these steps to protect your investment: For long-term…
-
Do Matte Black Window Frames Show More Dust and Pollen in Colorado’s Climate?
Read More »: Do Matte Black Window Frames Show More Dust and Pollen in Colorado’s Climate?Yes, matte black window frames tend to show dust and pollen more readily than lighter frames due to Colorado’s specific environmental conditions. In our semi-arid climate, the dry air increases static, which causes frames to attract fine particles more quickly.…
-
What is the Cost of Professional Window Replacement in Boulder?
Read More »: What is the Cost of Professional Window Replacement in Boulder?Professional window replacement costs in Boulder are not one-size-fits-all, as they are influenced by several specific project variables. Because every home has unique conditions, we do not provide fixed pricing without an on-site visit. The overall cost for your project…
-
Are There Specific Building Codes for Windows in Boulder, Colorado?
Read More »: Are There Specific Building Codes for Windows in Boulder, Colorado?Yes, there are specific building codes and requirements you must follow when installing windows in Boulder. Because the city features a unique mix of historic homes and modern infill, we prioritize navigating these local regulations through our Design Build Services…
