ADUs are allowed in NorthglennTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Northglenn, CO
Is your property eligible for an ADU?
# of Properties
10,127
Owner-occupied
84%
Zoning districts
13
Avg Home Value
$595,379
Median Lot Size
0.19 acres
Avg Income
$100,520
Residential Types:
10,127 housing units
Single Family
12%
Other
87%
Zoning Districts:
10,771 parcels · 13 districts
RS-2
65%(6,960)
PD
20%(2,172)
RM-1
5%(589)
OS
4%(417)
Other
6%(633)
ADU Rules
What can you build in Northglenn, CO?
Northglenn, CO follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum size of 750 sq ft for internal or attached ADUs
Detached ADU Size Limits
- –Maximum size of 750 sq ft
Max Units
- –1 ADU per property total (may be attached or detached).
- –0 ADUs for multifamily dwellings or live/work units.
Owner Occupancy
- –Owner must reside on-site in either the primary or the ADU
Parking
- –1 space/ADU; up to 25% reduction for sites within 0.5 mi of fixed transit or served by frequent bus; further reductions may be approved via a parking-demand study.
Rental Restrictions
- –STRs allowed only if the owner resides on the property; 30-day maximum stays and a City STR license required; bed and breakfasts not allowed in ADUs.
ADU State Law
What can you build in Colorado?
- –ADUs must be approved based on objective standards; no discretionary hearings allowed.
- –Historic properties: Local historic review may still apply in designated historic districts.
- –Exempt parcels: ADUs are not required to be allowed on parcels without adequate water/sewer, in floodways, or on certain historic properties.
- –HOAs cannot prohibit ADUs: HOA rules that conflict with the state ADU law are void.
- –Parking exceptions exist: In rare cases, one parking space may be required if there is no existing off-street parking and on-street parking is prohibited.
- –Local rules still matter: Building code, fire code, utility capacity, and life-safety standards still apply.
- –More permissive is allowed: Municipalities may allow larger ADUs, multiple ADUs, or additional housing types beyond what the state requires.
- –Local zoning controls whether ADUs are allowed at all.
- –HOA rules may still apply.
- –More permissive local rules are allowed.
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
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ADU rules in other Colorado municipalities
Rules change at the town line. Check the municipality your property is actually in.
Weld County