ADUs are allowed in Fort LuptonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Fort Lupton, CO
Is your property eligible for an ADU?
# of Properties
5,658
Owner-occupied
81%
Zoning districts
24
Avg Home Value
$336,562
Median Lot Size
0.16 acres
Avg Income
$84,671
Residential Types:
5,658 housing units
Residential
100%
Zoning Districts:
17,073 parcels · 24 districts
PUD
35%(6,048)
A
17%(2,934)
R-2
16%(2,785)
R-1A
10%(1,782)
Other
21%(3,524)
ADU Rules
What can you build in Fort Lupton, CO?
Fort Lupton, 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
- –Maximum size of 50% of the principal dwelling’s living area
Detached ADU Size Limits
- –Maximum detached ADU size of 1,200 sq ft
- –Maximum detached ADU size of 50% of the principal dwelling living area
Max Units
- –1 ADU per lot for single-family; 1 ADU per lot for duplex/multi-unit
Owner Occupancy
- –Owner of record must occupy either the ADU or principal dwelling
Parking
- –1 space/ADU; no max; waiver by Director if space unnecessary; DT zone: no parking required (Director may require for residential impacts); on-street within 300 ft counts as 0.5 space; bicycle parking credits may substitute 1 space per 2 bicycles up to a 20% reduction.
Rental Restrictions
- –Minimum lease term: monthly or longer; Short-term rentals allowed only where Lodging–Short Term Rental is approved; must be principal residence 9+ months/year; if not in residence, rental limited to 3 months/year; business license required.
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