ADUs are allowed in FlorenceTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Florence, CO
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# of Properties
2,386
Owner-occupied
57%
Zoning districts
16
Avg Home Value
$133,755
Median Lot Size
0.18 acres
Avg Income
$57,362
Residential Types:
2,386 housing units
Single Family
61%
2-3 Family
1%
Apts (4+ units)
2%
Other
35%
Zoning Districts:
2,713 parcels · 16 districts
R-1
52%(1,412)
PUD-SUMO
15%(406)
R-2
12%(339)
MH
7%(194)
Other
13%(362)
ADU Rules
What can you build in Florence, CO?
Florence, 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 of 1,000 sq ft
- –Maximum ADU size of 75% of the primary dwelling’s gross floor area
Detached ADU Size Limits
- –Maximum ADU size of 1,000 sq ft or 75% of the primary dwelling, whichever is less
- –For detached accessory structures, maximum size is the smaller of 25% of lot area (capped at 1,000 sq ft) or the principal building’s footprint
Max Units
- –1 ADU per single-family lot
Owner Occupancy
- –Owner must reside in the principal dwelling or ADU
Parking
- –1 off-street space per ADU; no reductions/waivers for ADUs; parking must be on the same lot as the dwelling; plot plan showing off-street parking required
Rental Restrictions
- –Short-term rentals 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.
Fremont County