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ADUs are allowed in Unincorporated St. Bernard
Types:Detached

Accessory Dwelling Unit (ADU) Rules for Unincorporated St. Bernard, LA

Is your property eligible for an ADU?

# of Parcels
21,774
Zoning districts
16
Avg Parcel Value
$15,094
Zoning Districts:
23,175 parcels · 16 districts
R-1
59%(13,788)
A-1
15%(3,535)
R-2
11%(2,434)
C-1
3%(806)
Other
11%(2,612)

ADU Rules

What can you build in Unincorporated St. Bernard, LA?

Unincorporated St. Bernard, LA follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.

Detached ADU Size Limits

  • Detached backyard cottages are prohibited; no square footage is allowed.

Max Units

  • 0 per lot in all residential districts
  • 1 per lot in business/industrial districts (garage apartment/guest home), limited to under 1,000 sq ft of habitable floor area and on lots at least 12,000 sq ft

Owner Occupancy

  • No owner-occupancy requirement.

Parking

  • 1 space/ADU (DD Overlay: 1 space/unit off-street); otherwise 2 spaces/ADU per general schedule; no max. Up to 25% reduction for shared parking; on-site parking required on the same lot (or within 500 ft if serving other uses).

Rental Restrictions

  • Detached ADUs prohibited as dwelling units (no rental). Internal/attached ADUs may be rented only as short-term rentals with an STR permit; in R-1, two-family units are not permitted, so such ADUs cannot be created or rented.

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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