ADUs are allowed in BreckenridgeTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Breckenridge, CO
Is your property eligible for an ADU?
# of Parcels
9,197
Zoning districts
52
Avg Parcel Value
$1,485,812
Zoning Districts:
9,197 parcels · 52 districts
LUD 23
11%(1,039)
Unknown
10%(938)
LUD 21
9%(872)
LUD 10
7%(632)
Other
62%(5,716)
ADU Rules
What can you build in Breckenridge, CO?
Breckenridge, 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 1,200 sq ft
Detached ADU Size Limits
- –Maximum detached ADU size of 1,200 sq ft
Max Units
- –Single-family: 1 ADU per primary unit (attached or detached).
- –Duplex: 1 per primary unit (max 2/lot).
- –Multifamily: none specified.
Owner Occupancy
- –No owner-occupancy requirement.
Parking
- –Outside Service Area: 1 space per ADU; Within Service Area: no explicit ADU minimum and no extra parking beyond the required amount; exceptions: Director waiver for local-worker occupancy, on-property parking, and potential shared parking; ADU parking is in addition to primary dwelling parking.
Rental Restrictions
- –Short-term/vacation rentals prohibited; minimum six-month leases; tenants must be employed ≥30 hours/week in Summit County; rent capped at 120% of AMI; cannot be left vacant >30 days; town may require it be offered for rent.
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.
Summit County