Professional Licensing Agency (plumbing only); local authorities for GC
Indiana does not require a state-level general contractor license. Registration is required.
Indiana does not mandate a statewide general contractor license, so the right to bid and perform work is governed mostly at the local level. There is no central licensing board for general contractors and no state-level dollar threshold; instead, each county and municipality sets its own licensing or registration rules. Before submitting any bid, a contractor must check the requirements of the specific city or county where the work will be performed, because what is permitted in one jurisdiction may require a permit, registration, or local license in another. Business registration with the Indiana Secretary of State is required as a baseline for operating.
Plumbing is the one trade licensed at the state level, through the Professional Licensing Agency, while electrical and HVAC work is typically regulated locally. If your scope includes plumbing, you or your subcontractor must hold the state plumbing license regardless of where the job sits, and unlicensed plumbing work carries state-level penalties. Because Indiana relies on local regulation for general contracting, there is no NASCLA acceptance and no state reciprocity for GCs, so out-of-state bidders gain no automatic credit from licenses held elsewhere and must satisfy each locality directly.
The enforcement risk for bidding unlicensed varies by jurisdiction, with penalties set at the local level for general contracting and state penalties reserved for unlicensed plumbing. The practical bidding discipline is the same as in any local-control state: confirm the exact local requirements for each project, maintain your Secretary of State business registration, and verify state plumbing licensure where relevant. Treating each municipality's rules as project-specific protects both your right to perform the work and your ability to enforce the contract and collect payment.
Varies by locality and trade
Penalties vary by locality; state-level penalties apply for unlicensed plumbing work