ADUs are allowed in Unincorporated ChaffeeTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Chaffee, CO
Is your property eligible for an ADU?
# of Properties
5,301
Owner-occupied
42%
Zoning districts
26
Avg Home Value
$781,714
Median Lot Size
2.18 acres
Avg Income
$88,575
Residential Types:
5,301 housing units
Single Family
71%
Other
29%
Zoning Districts:
10,035 parcels · 26 districts
RR
39%(3,947)
AR
19%(1,890)
RS
18%(1,849)
BC
9%(884)
Other
15%(1,465)
ADU Rules
What can you build in Unincorporated Chaffee, CO?
Unincorporated Chaffee, 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 internal ADU size by zone: 1,500 sq ft in AR and RR; 1,000 sq ft in RS, RM, MUR, and MUC.
- –Maximum internal ADU size cannot exceed the floor area of the principal building.
Detached ADU Size Limits
- –Maximum detached ADU size is 1,500 sq ft in AR or RR, or 1,000 sq ft in RS, RM, MUR, or MUC.
- –Detached ADU size cannot exceed the principal building’s floor area in AR, RR, RS, RM, MUR, or MUC.
Max Units
- –1 ADU per subject property.
- –Up to 2 ADUs for a single-unit detached dwelling connected to public water and sewer (and meeting density requirements).
- –Duplex or multifamily principal structures: none specified.
Owner Occupancy
- –Owner-occupancy not required.
Parking
- –1 space/ADU; no new space required if an existing off-street or on-street space is available (tandem/garage/driveway)
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.
Chaffee County