Accessory Dwelling Unit (ADU) Rules for Unincorporated Dunn, WI

Is your property eligible for an ADU?

# of Properties

Zoning districts

Zoning Districts:

215 parcels · 9 districts

56%(120)

R-1

22%(47)

8%(18)

8%(17)

Other

6%(13)

ADU Rules

What can you build in Unincorporated Dunn, WI?

Unincorporated Dunn, WI 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 for an internal/attached ADU
–Internal/attached ADU must be smaller than the primary single-family dwelling’s floor area

Detached ADU Size Limits

–Maximum size of 1,200 sq ft for a detached accessory dwelling unit.
–ADU must not exceed the floor area of the primary single-family dwelling (subordinate in size).

Max Units

–1 ADU per lot total (single-family, attached or detached)
–0 ADUs per lot (two-family/duplex; prohibited)
–JADU: none specified

Owner Occupancy

–No owner-occupancy requirement

Parking

–2 spaces/ADU minimum; max none; on-site parking on same lot, stalls 9x18, within 400 ft; no ADU-specific exemptions; shared parking allowed only in LC, GC, LI, HI.

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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