ADUs are allowed in RockvaleTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Rockvale, CO
Is your property eligible for an ADU?
# of Properties
393
Owner-occupied
38%
Zoning districts
8
Avg Home Value
$127,067
Median Lot Size
0.52 acres
Avg Income
$55,234
Residential Types:
393 housing units
Single Family
80%
Other
20%
Zoning Districts:
348 parcels · 8 districts
R1
47%(163)
RE
32%(111)
B1
11%(38)
C
4%(14)
Other
6%(22)
ADU Rules
What can you build in Rockvale, CO?
Rockvale, 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 800 sq ft for internal or attached ADUs
Detached ADU Size Limits
- –Maximum detached ADU size is 800 sq ft
Max Units
- –R-E single-family: 1 ADU per lot
Owner Occupancy
- –Owner must reside in one dwelling unit.
Parking
- –1 space per ADU; no maximum stated; off-street spaces must be at least 10' wide x 20' long x 7' high; in non-R-1 districts (including R-E) spaces may be within 200 ft of the principal use; Board may waive requirements for good cause.
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.
Fremont County