

ADU rules for New Plymouth
Accessory Dwelling Unit (ADU) Rules for New Plymouth, ID
Is your property eligible for an ADU?
# of Parcels
722
Zoning districts
6
Avg Parcel Value
$288,045
Median Parcel Size
0.23 acres
Zoning Districts:
723 parcels · 6 districts
R-B
54%(388)
R-A
19%(134)
C
11%(81)
R-C
10%(69)
Other
7%(51)
ADU Rules
What can you build in New Plymouth, ID?
New Plymouth, ID follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: Not addressed in the local bylaw
Parking
- –General rule: 1 parking space per dwelling unit; spaces must be on the same parcel and may not occupy required front yard (applies to one-, two-, and multi-family dwellings).
Rental Restrictions
- –Detached ADU: no rental by non-guests; guesthouse allowed only for occasional guests, not for permanent occupancy.
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 Idaho municipalities
Rules change at the town line. Check the municipality your property is actually in.
Payette County