FutureLot
ADUs are allowed in Erlanger
Types:DetachedInternal

Accessory Dwelling Unit (ADU) Rules for Erlanger, KY

Is your property eligible for an ADU?

# of Properties
5,742
Owner-occupied
86%
Zoning districts
18
Avg Home Value
$91,433
Median Lot Size
0.22 acres
Avg Income
$90,847
Residential Types:
5,742 housing units
Single Family
93%
2-3 Family
4%
Apts (4+ units)
1%
Other
1%
Zoning Districts:
6,484 parcels · 18 districts
R-CPS
66%(4,296)
R-CVS
18%(1,152)
PUD
8%(494)
NC
1%(86)
Other
7%(456)

ADU Rules

What can you build in Erlanger, KY?

Erlanger, KY follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.

Interior / Attached ADU Size Limits

  • Maximum size of 800 sq ft
  • Maximum size of 75% of the primary dwelling’s living area

Detached ADU Size Limits

  • Maximum size is the lesser of 75% of the primary dwelling’s living area or 800 sq ft.
  • In R-CVS, R-CPS, and R-M districts, a detached ADU is also limited to no more than the primary structure’s floor area due to cumulative accessory-building limits.

Max Units

  • 1 ADU per lot on single-family or two-family (duplex) lots.
  • Multifamily lots: none specified.

Owner Occupancy

  • Owner must occupy either the primary dwelling or ADU

Parking

  • 1 space/ADU; no max; up to 35% reduction via parking credits or a study; on-street may count except on single-family detached lots; spaces may be on-site or within 500 ft, on an easement, or via approved shared parking.

Rental Restrictions

  • Short-term rentals: 1–29 day stays; min 1 night; permitted only where STRs are allowed (in primary structure and one ADU).
  • Long-term rentals: no ban on leasing ADUs.

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 property

How 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 Kentucky municipalities

Rules change at the town line. Check the municipality your property is actually in.

Kenton County