Plumbing Code Adoption

Indiana Plumbing Code: Indiana Plumbing Code (UPC-based) 2012

Indiana follows Indiana Plumbing Code (UPC-based) 2012 as the basis for plumbing work. Permits and inspections are issued by the local Authority Having Jurisdiction (AHJ), which may publish additional amendments.

Adoption details

Model code family: IPC / UPC
Adopted edition: Indiana Plumbing Code (UPC-based) 2012
Last verified: 2026-05-29
Source: Adoption tracker

Note: Indiana Plumbing Code is derived from the UPC with state amendments.

Related resources for Indiana

Frequently Asked Questions

What plumbing code does Indiana use?

Indiana currently follows Indiana Plumbing Code (UPC-based) 2012 for plumbing work. Always confirm the in-force edition with the local Authority Having Jurisdiction (AHJ) — county or city amendments can apply.

Do I need a permit for plumbing work in Indiana?

Most plumbing work in Indiana — including new installations, system replacement, and gas-fueled appliance hookups — requires a permit from the local building department and an inspection at completion. Homeowner permits are typically allowed for owner-occupied residences; commercial work requires a licensed contractor.

Where do I check Indiana plumbing code amendments?

Local jurisdictions (city or county) often publish amendments on the state's building-codes board website or in the municipal code. The current Indiana Plumbing Code (UPC-based) 2012 text is published by its model-code body (ICC, IAPMO, or NFPA depending on the trade).

Are there any unusual plumbing requirements in Indiana?

Indiana Plumbing Code is derived from the UPC with state amendments.

Reference guidance only — adoption editions and local amendments vary by city or county. Always confirm requirements with your local Authority Having Jurisdiction (AHJ) before designing, permitting, or constructing.

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