ADU Regulations in Northglenn, Colorado
In Adams County north of Denver, Northglenn regulates ADUs under local ordinance. Colorado has no statewide ADU mandate, so property owners must follow the city's specific zoning requirements.
Below is a summary of the key zoning rules applicable to Accessory Dwelling Units in Northglenn as of 2026. Regulations are governed by local zoning ordinances, as Colorado has no statewide ADU mandate (HB 24-1152 addresses transit density).
| Regulation | Requirement |
|---|---|
| Maximum Size | 1,000 sq ft |
| Property Setbacks | 5 ft rear, 5 ft side |
| Extra Parking Required | Required (1 space) |
| Owner Occupancy | Required |
Additional Local Requirements for Northglenn
- Minimum lot size may apply
- Minimum 200 sq ft
- Owner occupancy may be required
- ⚠️ CO has NO statewide ADU mandate — verify with city
📥 Download the Complete Northglenn ADU Cheat Sheet
Get the step-by-step permit checklist, official government forms, direct planning department contacts, and estimated fees — all in one printable PDF for Northglenn, Colorado.
Download the Complete Northglenn ADU Cheat Sheet — $12Frequently Asked Questions About ADUs in Northglenn
Can I build an ADU in Northglenn?
This Colorado city regulates ADUs through local ordinance. Confirm the minimum lot size and owner occupancy rules with the planning department.
How big can my ADU be in Northglenn?
What is the maximum ADU size allowed in Northglenn? ADUs in Northglenn can be up to 1,000 square feet, subject to the property's zoning and lot coverage limits. Always confirm the exact allowed size with the Northglenn planning department before designing your project.
What about setbacks and other requirements in Northglenn?
What are the setback requirements for an ADU in Northglenn? ADUs in Northglenn generally require setbacks of 5 ft rear, 5 ft side. California state law (AB 68) limits local setback requirements to 4 feet for existing structures, but always verify with local zoning.
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