Atchison

Kansas enacted statewide ADU-permissive housing legislation in the 2026 session. Senate Bill 418, the By-Right Housing Development Act, was signed by Governor Laura Kelly on 2026-04-08. The bill requires every Kansas city and county to ministerially approve housing developments — including single-family homes, townhouses, and accessory dwelling units — that meet existing local zoning code criteria, without discretionary review. Rezoning to single-family residential cannot be subject to double super-majority protest-petition review. Third-party private inspectors are permitted when the local government does not perform required inspections within 15 days of request. The bill follows the Pacific Legal Foundation model 'By-Right Housing Development Act' and 'Fair Zoning Act'. SB 418 does not preempt local zoning standards (size, setback, parking, etc.), but it forces ministerial approval where standards are met.

Kansas does not operate an ADU-specific statewide loan, grant, or forgivable-loan program. The Kansas Housing Resources Corporation (KHRC) administers general first-time-homebuyer, down-payment-assistance, weatherization, and rural-home-loan-guarantee programs. The First Time Homebuyer program offers a 0% interest second mortgage of 15% or 20% of purchase price, forgiven after 10 years of occupancy. None target ADU construction directly; an ADU may be financed through standard rehab or construction-loan products if part of a qualifying primary-residence purchase or refinance.

• KHRC First Time Homebuyer Program
• Kansas Homeowner Assistance Fund
• Home Loan Guarantee for Rural Kansas

Kansas's primary state-level ADU program is the SB 418 (2026) By-Right Housing Development Act, which mandates ministerial approval of conforming ADU applications and permits third-party inspection when local agencies miss the 15-day inspection window. There is no statewide pre-approved ADU plan catalog, no statewide ADU rebate program, and no statewide ADU impact-fee waiver. The SB 418 ministerial-approval requirement is the dominant state-level intervention.

• SB 418 By-Right Housing Development Act — Cities and counties must approve single-family homes, townhouses, and ADUs that meet existing zoning standards ministerially, without discretionary review. Bars double super-majority protest-petition review for rezoning to single-family residential.
• SB 418 Third-Party Inspection Provision — When a local government fails to perform a required residential inspection within 15 days of request, the developer/owner may engage a qualified third-party inspector. Removes city/county inspection-backlog as a permit bottleneck for ADUs.