ADUs are allowed in Unincorporated EagleTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Eagle, CO
Is your property eligible for an ADU?
# of Properties
14,269
Owner-occupied
20%
Zoning districts
32
Avg Home Value
$2,165,984
Median Lot Size
0.81 acres
Avg Income
$119,171
Residential Types:
14,269 housing units
Single Family
58%
Other
42%
Zoning Districts:
17,765 parcels · 32 districts
PUD
63%(11,175)
R
12%(2,213)
RR
5%(962)
RSM
5%(934)
Other
14%(2,481)
ADU Rules
What can you build in Unincorporated Eagle, CO?
Unincorporated Eagle, 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 ADU size by zone: R—1,800 sq ft; RL—1,200 sq ft; AR—1,000 sq ft; AL—850 sq ft; RR—850 sq ft; RSL—600 sq ft; PUD—set by approval.
Detached ADU Size Limits
- –Maximum detached ADU size by zone: R 1,800 sq ft; RL 1,200 sq ft; AR 1,000 sq ft; AL 850 sq ft; RR 850 sq ft; RSL 600 sq ft; PUD as approved.
Max Units
- –1 ADU per single-family lot
- –0 ADU per duplex or multifamily lot
Owner Occupancy
- –No owner-occupancy requirement is specified.
Parking
- –1 space/ADU for studio or 1-bedroom; 2 spaces for 2+ bedrooms. Planning Director may allow shared parking with up to 20% reduction, with spaces on the same lot or in a common parking area in the development
Rental Restrictions
- –Short-term rentals (<14 days) prohibited
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.
Eagle County