ADUs are allowed in OlatheTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Olathe, KS
Is your property eligible for an ADU?
# of Properties
47,042
Owner-occupied
85%
Zoning districts
59
Median Lot Size
0.22 acres
Avg Income
$131,287
Residential Types:
47,042 housing units
Single Family
91%
Apts (4+ units)
9%
Other
1%
Zoning Districts:
56,807 parcels · 59 districts
R-1
60%(33,976)
RP-1
12%(7,049)
R-2
6%(3,497)
RP-3
6%(3,278)
Other
16%(9,007)
ADU Rules
What can you build in Olathe, KS?
Olathe, KS 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 1,000 sq ft
- –Maximum size of 50% of the principal dwelling’s floor area
Detached ADU Size Limits
- –Maximum size of 1,000 sq ft
- –Maximum size of 50% of the principal structure’s floor area
Max Units
- –1 ADU per lot (single-family)
Owner Occupancy
- –There is no owner-occupancy requirement.
Parking
- –Baseline: 1 space/ADU; Downtown: 0; TOD Core within 500 ft: 0; Core: 50% of required; Periphery: 75% of required; max caps per Table 18.20.230-4
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 Kansas municipalities
Rules change at the town line. Check the municipality your property is actually in.
Johnson County