ADU Pass
Clinton
ADU Pass helps homeowners in Clinton, Vermillion County, Indiana navigate the permit paperwork for building an accessory dwelling unit. This area covers 1 ZIP code.
Map
ADU details
ADU legality: with-restrictions
Clinton (Vermillion County) has no dedicated ADU ordinance. Applicants - whether on city or unincorporated parcels - work through the Vermillion County Zoning Office in Newport for the Improvement Location Permit, after first clearing soil and septic. The city handles utility connections.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 300 | $720 | $60,000 | $60,720 |
| 600 | 600 | $765 | $120,000 | $120,765 |
| midpoint | 550 | $758 | $110,000 | $110,758 |
| maximum | 900 | $810 | $180,000 | $180,810 |
Fee breakdown (as of 2026-04)
Permitting process
- Pre-application appointment with Vermillion County Zoning (~5d)
Per posted office instructions, call Vermillion County Zoning Office at 765-492-5340 (cell 812-208-0163) to schedule an appointment before visiting Newport. Confirm parcel district and ADU approach. - Soil sample test (independent soil scientist) (~14d)
Engage a licensed soil scientist - the county references Galen Littwiller (217-898-3946) at approximately $400 - to perform percolation and soil-profile evaluation. - Septic permit from Vermillion County Health Department (~14d)
Submit soil report to Vermillion County Health Department (765-832-3622); $75 fee. Permit is a hard precondition for the Improvement Location Permit. - City utility coordination (in-city parcels only) (~14d)
If parcel is in City of Clinton, coordinate water/sewer/electric tap with City of Clinton Utilities (259 Vine St., Clinton, IN 47842; 765-832-6270). For unincorporated parcels relying on rural water, coordinate with the Wabash valley rural water provider. - Improvement Location Permit application (~1d)
Submit Improvement Location Permit application to Vermillion County Zoning Office (Courthouse 2nd Floor, Newport). Fee is $150 base plus $0.15 per sqft of new structure. Cash or check only - no credit-card payments accepted. - Zoning and plan review (~14d)
Vermillion County Zoning Administrator reviews for setbacks, lot density, UDO district compliance, and floodplain check (significant Wabash River SFHA acreage in Clinton). - State residential code compliance (~7d)
Confirm Indiana Residential Code (675 IAC, IRC 2018 base) compliance through county building inspector. State Building Standards Admin fee applies. - Construction inspections and final (~7d)
Schedule footing, foundation, framing, MEP rough, insulation, and final inspections through the county building inspector. Septic install gets a Health Department final.
Viability (permitted uses)
- Long-term rental: yes Long-term rental permitted under Indiana landlord-tenant law (IC 32-31). City of Clinton has no rent-stabilization regime.
- Short-term rental: with-restrictions (Indiana state innkeeper's tax; Vermillion County does not impose a separate STR registration) Modest STR demand from Wabash valley travelers and Italian Festival visitors; Clinton's 'Little Italy of the Midwest' identity supports tourism positioning.
- Indiana innkeeper's tax applies
- City of Clinton may require utility-billing reclassification for short-term occupancy
- HOA covenants enforceable on the few HOA parcels
- Office rental: no Vermillion County UDO treats accessory residential as residential only; office rental requires rezoning.
- Home office: yes Home occupation use customary; minimal traffic limits in residential districts.
- Studio / workshop: yes Personal art/workshop use permitted accessory residential.
- Agriculture: with-restrictions Backyard agriculture by district; livestock varies. Vermillion is heavily agricultural outside Clinton corporate limits.
- Relative support: yes Multigenerational and farm-help housing common; staff routinely approve as accessory residential.
Incentives
- Indiana Homestead Standard Deduction — Owner-occupied homestead deduction preserved on primary residence.
Contacts
Staff: Penney Barton (Vermillion County Zoning Administrator), Vermillion County Zoning Office (cell) (Field/cell line for the Zoning Office), Vermillion County Health Department (Septic permits and inspections ($75 permit)), City of Clinton Clerk-Treasurer (City of Clinton municipal coordination), City of Clinton Utilities (water, sewer, electric) (City utility connections and billing), Galen Littwiller (independent soil scientist - referenced by county) (Soil sample test for septic feasibility (~$400))
Utilities
- Water: City of Clinton Utilities (in-city) or Wabash valley rural water (unincorporated) · 21d connect · $3,800
- Sewer: City of Clinton Wastewater Utility (in-city) or private septic (unincorporated) · 30d connect · $4,500
- Electric: City of Clinton Electric (municipal in-city) or Duke Energy Indiana (unincorporated) · 21d connect · $1,700
- Gas: Vectren / CenterPoint Energy Indiana North (where mains exist) or propane (rural parcels) · 21d connect · $1,400
Property values & taxes
Market rent by ADU size
| Sq ft | Rent |
|---|---|
| 400 | $700/mo |
| 600 | $850/mo |
| 800 | $1,000/mo |
Construction timeline
Realistic total: best 7mo · typical 11mo · worst 18mo
Wabash valley contractor pool draws from Terre Haute MSA (~25 miles south); spring/summer farm work and river-valley flooding events compete for trades.
Modular pathway Indiana Department of Homeland Security - Industrialized Building Systems · inspectors are rare with modular · 1 modular permits (last 24mo)
US-41 corridor through Clinton plus SR-63 are main module-delivery routes; Wabash River bridge weight limits are the principal physical constraint.
Financing
State ADU loans:
- Indiana Housing and Community Development Authority (IHCDA) (State of Indiana)
- USDA Rural Development Single Family Housing programs (USDA Rural Development - Indiana)
Insurance impact
Wabash floodplain exposure raises insurance complexity meaningfully; underwriters require elevation certificates and NFIP for SFHA parcels.
HOA prevalence & preemption
Negligible HOA prevalence in City of Clinton and unincorporated Vermillion County; older fee-simple housing stock dominates.
Regulatory overlays (2)
- flood-zone — FEMA SFHA Zone AE along the Wabash River corridor through Clinton; significant SFHA acreage on the city's west and south sides · +21d · +12% cost
Wabash River floodplain is the dominant constraint in Clinton; finished-floor elevation requirements, flood vents, and federal flood insurance for federally-backed financing. (map) - agricultural-overlay — Vermillion County is heavily agricultural outside Clinton corporate limits; right-to-farm protections (IC 32-30-6) apply broadly
Agricultural protections typically work in favor of accessory residential supporting farm operations on unincorporated parcels. (map)
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- 675 IAC 14 - Indiana Residential Code amendments to IRC 2018 — Indiana strikes IRC R313 mandatory residential sprinkler requirement; retains other IRC provisions with state-specific amendments.
- Vermillion County Unified Development Ordinance amendments — County UDO amendments minimal; IRC + 675 IAC controls.
Contractor market (aggregate)
Legal history (timeline)
Current ordinance: Vermillion County Unified Development Ordinance + Comprehensive Plan (2022), adopted 2022-01-01, last amended 2026-03-01
- 1829-01-01 — Vermillion County, Indiana established (state-law)
Indiana General Assembly created Vermillion County effective February 1, 1824 (with later boundary adjustments); county seat at Newport.
Effect: Established jurisdictional foundation for county-controlled zoning that persists today. - 2018-01-01 — Indiana Residential Code (675 IAC 14) updated to IRC 2018 base (state-law)
Indiana Department of Homeland Security adopted IRC 2018 with Indiana amendments as the base residential code, applicable in Clinton and Vermillion County.
Effect: Set the IRC baseline for any ADU-style secondary unit. - 2022-01-01 — Vermillion County Comprehensive Plan adopted (2022) (county-ordinance)
Vermillion County adopted an updated Comprehensive Plan establishing growth and housing policy framework.
Effect: Comprehensive plan informs ADU staff guidance under the Unified Development Ordinance. - 2024-07-01 — Vermillion County 'What do I need to do to get a building permit for a new house' guide updated (Penney Barton, Zoning Administrator) (other)
Vermillion County Zoning published an updated step-by-step new-home permit guide reaffirming the soil-sample, septic-permit, and Improvement Location Permit sequence.
Effect: Standardized applicant intake materials; ADU applicants follow the same sequence. - 2026-03-01 — Vermillion County Ordinance 2026-2 - Location Improvement Permit Fees (March 2026 schedule) (county-ordinance)
Updated permit fee schedule for Improvement Location Permits in Vermillion County.
Effect: Confirms current $150 base + $0.15/sqft Improvement Location Permit fee applied to ADU/accessory dwelling applications.
Known issues (3)
- payment-method (since 2024-07) — County accepts only cash or checks for permit fees - no credit or debit cards. Out-of-county applicants and online filers should plan accordingly. (source)
- appointment-required (since 2024-07) — Per posted office instructions, applicants must call to schedule an appointment before visiting Newport (765-492-5340 or 812-208-0163). Walk-ins are discouraged. (source)
- floodplain-exposure (since ongoing) — Significant SFHA acreage on Clinton's west and south sides drives elevation, vent, and NFIP requirements; ADU design must factor finished-floor elevation early. (source)
Indiana state — ADU law and programs
State ADU law
Indiana enacted statewide ADU-permissive housing legislation in the 2026 session. House Enrolled Act 1001 (HEA 1001), authored by Rep. Doug Miller (R-Elkhart), was signed by Governor Mike Braun on 2026-04-14. The bill makes ADUs and commercial-to-residential conversions permitted uses by right unless a city, town, or county affirmatively opts out by 2026-12-31 via local ordinance. The bill also caps building permit fee increases (180-day delay before new permit-fee ordinances take effect), restricts certain residential design and aesthetic regulations, and requires every Indiana local government to hold a public housing-supply hearing in 2026 and report annually to the Indiana Housing and Community Development Authority. Earlier related bills (HB 1005 in 2025) addressed parts of the housing framework but did not preempt local ADU rules; HEA 1001 is the first true statewide ADU floor.
State financing programs
Indiana does not operate an ADU-specific statewide loan, grant, or forgivable-loan program. The Indiana Housing and Community Development Authority (IHCDA) administers general homeownership, down-payment-assistance, and affordable-housing-development programs that can apply to properties with ADUs when eligibility criteria are met, but none target ADU construction directly. HEA 1001 (2026) gave IHCDA a new oversight role — receiving annual housing-progress reports from every local government — but did not create new ADU financing.
State housing programs
Indiana's primary state-level ADU program is the new HEA 1001 (2026) framework: ADU-by-right permitting unless opted out, capped permit-fee escalation, restricted design regulation, and required local public hearings and annual progress reporting to IHCDA. There is no statewide pre-approved ADU plan catalog, no statewide ADU impact-fee waiver, and no statewide ADU rebate program. Earlier discussion in HB 1005 (2025) of broader housing-process reforms set the policy stage for HEA 1001.
- HEA 1001 ADU-by-right framework — ADUs are permitted uses statewide unless a city, town, or county opts out by ordinance before 2026-12-31. Localities that opt in (the default) must process ADU applications ministerially within their ordinary permit framework.
- HEA 1001 building-permit-fee cap — Local building-permit-fee increases must be published 180 days before they take effect. Limits on the size and frequency of increases apply after 2026-12-31.
- HEA 1001 local housing-supply hearing and reporting requirement — Every Indiana city, town, and county must hold a public hearing on housing supply in 2026 and submit annual progress reports to IHCDA on housing approvals, denials, and timelines.
Federal (United States) — ADU-relevant rules and programs
Federal ADU law
The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.
Federal financing programs
Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.
Federal tax credits
There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.
Federal housing programs
HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.
ZIP Code
- 47842
Post Office
- 405 Vine St, 47842