

ADUs are allowed in Unincorporated NatronaTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Natrona, WY
Is your property eligible for an ADU?
# of Parcels
12,151
Zoning districts
4
Avg Parcel Value
$254,383
Median Parcel Size
5.10 acres
Zoning Districts:
6 parcels · 4 districts
PH
50%(3)
C-2
17%(1)
R-2
17%(1)
R-3
17%(1)
ADU Rules
What can you build in Unincorporated Natrona, WY?
Unincorporated Natrona, WY 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 is the smaller of 1,000 sq ft or 50% of the primary dwelling’s floor area.
Detached ADU Size Limits
- –Maximum size is the smaller of 50% of the primary dwelling’s floor area or 1,000 sq ft.
Max Units
- –1 ADU per lot (default; ADUs only as accessory to single-family uses; no ADUs for duplex/multi-unit principal structures; UR requires lot ≥ 2 acres).
- –UA: 1 per 10 acres; MR-1: 1 per 10; MR-2: 1 per 5; RR: 1 per lot; SR: 1 per lot; UR: 1 per lot (≥2 acres); UMR: 0; MH: 0.
Owner Occupancy
- –Owner must occupy the principal dwelling as permanent residence.
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.
Check my propertyHow can we help you?
Get matched with trusted local builders
Understand what's allowed on your property
Learn the key rules and size limits for ADUs
Is your property eligible for an ADU?
ADU rules in other Wyoming municipalities
Rules change at the town line. Check the municipality your property is actually in.
Natrona County