ADUs are allowed in LasalleTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Lasalle, CO
Is your property eligible for an ADU?
# of Properties
1,260
Owner-occupied
88%
Zoning districts
9
Avg Home Value
$375,747
Median Lot Size
0.17 acres
Avg Income
$93,891
Residential Types:
1,260 housing units
Residential
100%
Zoning Districts:
1,996 parcels · 9 districts
R-1
64%(1,271)
UNK
13%(265)
C
8%(156)
R-2
7%(133)
Other
9%(171)
ADU Rules
What can you build in Lasalle, CO?
Lasalle, 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 750 sq ft
- –Maximum size may not exceed the size of the primary residence
Detached ADU Size Limits
- –Maximum of 750 sq ft, and also cannot exceed the size of the primary residence.
Max Units
- –1 ADU per lot on single-family detached lots; only one ADU per lot.
- –0 ADUs per lot on duplex or multifamily lots (not permitted).
Owner Occupancy
- –Applicant must reside on the lot where the ADU is proposed.
Parking
- –1 space per ADU; can be in existing driveway/garage or tandem; must be on the same lot and paved; no max specified
Rental Restrictions
- –Short-term rentals prohibited; minimum rental term 30+ days.
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.
Weld County