Indiana / Indianapolis

Plumbing Permit in Indianapolis, Indiana

It depends

Sometimes, depending on the project

Before any construction activity on a plumbing system, including a repipe that touches more than 20 percent of the structure's piping, new fixture rough-ins and drain line changes.

Confirmed on official page Verified City of Indianapolis Department of Business and Neighborhood Services (DBNS)

By Mario Bailey, verified against official sources

Quick answer

DBNS requires a plumbing permit for any construction activity related to a plumbing system, then publishes four exceptions. Replacement in kind of piping is exempt only where the new piping matches the performance specifications and capacity of what it replaces and no more than 20 percent of all piping in the structure is replaced, so a partial repipe is exempt and a whole-house repipe is not. The other exceptions are replacement of appliances, fixtures, traps and valves; replacement of a water heater identical as to venting arrangement and type of fuel or energy input; and initial connection or reconnection of plumbing to a mobile home not on a permanent foundation in a mobile home park licensed by the Indiana State Department of Health. Plumbing permits must be pulled by a licensed plumbing contractor, though DBNS says homeowners can pull plumbing permits in limited situations if they email PermitQuestions@indy.gov with project details.

Typical threshold: share of a structure's piping replaced in kind with piping of the same performance specifications and capacity.

Who is pulling this permit?

Hire it out

Before you sign, ask the contractor:

  • Who pulls the permit, you or me, and is the permit fee included in the bid?
  • Which inspections will this job need, and who meets the inspector on site?
  • Is your contractor license active in this locality, and under which business name?

When a permit is usually needed

Before any construction activity on a plumbing system, including a repipe that touches more than 20 percent of the structure's piping, new fixture rough-ins and drain line changes.

What a plumbing permit costs in Indianapolis

Line item
plumbing permitBy formulaDBNS Fee Schedule (Permits, as of 1.5.2026), Plumbing Permit (PLM): "New Residential Structure--Installation" $185.00 for 2,500 sq ft or less plus $23.00 per 500 sq ft over 2,500 sq ft; "Residential Structure--Repair, Alteration, Remodel" $153.00 for 1,000 sq ft or less plus $23.00 per 500 sq ft over 1,000 sq ft; "Initial Connection or Reconnection to Relocated Structure" $134.00; "General Service Activity" $89.00. DBNS states craft permit fees did not change in the January 5, 2026 update.
Fee schedule in forceOfficial scheduleRead . Fees are the jurisdiction’s; we do not mark them up or estimate them.

How to apply in Indianapolis

You apply for a residential plumbing permit at your local building department by filing an application that describes the scope of work and site, along with construction documents, before any regulated plumbing installation, alteration, or repair begins. Minor repairs that do not touch piping or fixtures are generally exempt, and once issued the permit only stays valid if work is started within its time limit.

What most plumbing permit applications include:

  • A permit is required before any owner or authorized agent constructs, alters, repairs, removes, converts, or replaces a plumbing system regulated by the code (IRC R105.1).
  • The application must identify and describe the work, describe the site, state the intended use and occupancy, and be signed by the applicant or an authorized agent (IRC R105.3).
  • Two or more sets of construction documents must accompany the application, drawn with enough clarity to show the location, nature, and extent of the proposed plumbing work and how it will conform to code (IRC R106.1, R106.1.1).
  • Minor plumbing repairs, such as clearing a stoppage or removing and resetting a water closet without rearranging pipes or fixtures, are exempt from permit (IRC R105.2).
  • Once issued, a permit is only valid for a limited window, commonly 180 days, and becomes invalid if the work is not started or is abandoned within that time, though extensions can be requested (IRC R105.3.2, R105.5).

General submittal guidance from 2021 International Residential Code (IRC), Chapter 1 Scope and Administration, Sections R105 Permits and R106 Construction Documents. Source. City of Indianapolis Department of Business and Neighborhood Services (DBNS) sets the exact checklist for Indianapolis.

Where to apply in Indianapolis:

City of Indianapolis Department of Business and Neighborhood Services (DBNS)

  • Department of Business and Neighborhood Services, 200 E. Washington St., Suite 107, Indianapolis, IN 46204
  • Phone: 317.327.8700
  • Email: permitquestions@indy.gov

Inspections and closing out your permit

Plumbing inspections are timed to whatever is about to hide the pipe: underground and under-slab piping is checked before concrete covers it, rough-in piping is pressure or water tested before walls close up, and a final inspection checks every fixture and backflow protection once the work is complete.

  1. Piping and equipment placed under a slab or floor must be in place and inspected before any concrete is poured or floor sheathing is installed over it (IRC R109.1.1.1).
  2. Rough plumbing, along with the mechanical, gas, and electrical rough-in, must be inspected prior to covering or concealment and before fixtures or appliances are set (IRC R109.1.2).
  3. Rough drain, waste, and vent (DWV) piping is tested with water, air, or (for plastic piping) a vacuum, and must show no evidence of leakage before it is closed in (IRC P2503.5.1).
  4. The water-distribution piping is tested and must hold tight under the system's working pressure, or under a 50 psi air test for non-plastic piping, before it is concealed (IRC P2503.7).
  5. The framing inspection cannot proceed until the plumbing rough inspection, along with the mechanical and electrical rough inspections, has been approved (IRC R109.1.4).
  6. At the final drainage test, each fixture is filled and then drained, and its traps and fixture connections must prove watertight by visual inspection (IRC P2503.5.2).
  7. Final inspection is made after all work required by the permit is complete, and includes confirming backflow protection, such as vacuum breakers on hose bibbs, is installed (IRC R109.1.6, P2902.4.3).

Schedule each inspection in advance and pass the final before you use the work or close the permit. Request inspections through the Indianapolis permit portal or by phone at 317.327.8700.

Inspection sequence from 2021 International Residential Code (IRC), Section R109 Inspections and Section P2503 Inspection and Tests. Source. An open permit left un-inspected can surface later in a title search or home sale.

Frequently asked questions

Do you need a plumbing permit in Indianapolis?
DBNS requires a plumbing permit for any construction activity related to a plumbing system, then publishes four exceptions. Replacement in kind of piping is exempt only where the new piping matches the performance specifications and capacity of what it replaces and no more than 20 percent of all piping in the structure is replaced, so a partial repipe is exempt and a whole-house repipe is not. The other exceptions are replacement of appliances, fixtures, traps and valves; replacement of a water heater identical as to venting arrangement and type of fuel or energy input; and initial connection or reconnection of plumbing to a mobile home not on a permanent foundation in a mobile home park licensed by the Indiana State Department of Health. Plumbing permits must be pulled by a licensed plumbing contractor, though DBNS says homeowners can pull plumbing permits in limited situations if they email PermitQuestions@indy.gov with project details. Share of a structure's piping replaced in kind with piping of the same performance specifications and capacity. Always confirm with the office before starting.
How much does a plumbing permit cost in Indianapolis?
DBNS Fee Schedule (Permits, as of 1.5.2026), Plumbing Permit (PLM): "New Residential Structure--Installation" $185.00 for 2,500 sq ft or less plus $23.00 per 500 sq ft over 2,500 sq ft; "Residential Structure--Repair, Alteration, Remodel" $153.00 for 1,000 sq ft or less plus $23.00 per 500 sq ft over 1,000 sq ft; "Initial Connection or Reconnection to Relocated Structure" $134.00; "General Service Activity" $89.00. DBNS states craft permit fees did not change in the January 5, 2026 update. See the official fee schedule for current amounts.
Where do you apply for a plumbing permit in Indianapolis?
You can apply through the Indianapolis permit portal or contact the City of Indianapolis Department of Business and Neighborhood Services (DBNS) directly. The links are listed on this page.
Can a homeowner pull a plumbing permit themselves in Indianapolis?
Under Indiana law (IC 36-7-8-3(a); IC 36-7-8-3(d); IC 25-28.5-1-11; IC 25-28.5-1-32(5)): Indiana is unusually permissive toward the homeowner doing the work. IC 36-7-8-3(d) provides that a county building standards ordinance adopted under that section does not apply to private homes that are built by individuals and used for their own occupancy, although the onsite sewage system still must comply with state law. That exemption is narrow: it reaches county ordinances for unincorporated areas under IC 36-7-8, not a city or town permit ordinance, so a homeowner inside municipal limits still answers to the local building department. On the trades, Indiana licenses plumbers at the state level but exempts the homeowner: IC 25-28.5-1-11 makes it unlawful to act as a plumbing contractor or journeyman plumber without a state license, while IC 25-28.5-1-32(5) excludes the owner occupant of a dwelling of eight or fewer residential units who is installing, altering, or repairing the plumbing system. Electricians are not licensed by the state at all: Indiana Code Title 25, which houses the professions and occupations licensing chapters, contains no electrician licensing chapter, and IC 36-7-8-3(a) instead lets a county adopt electrical standards by ordinance, so electrical licensing in Indiana is a local matter. Confirm how Indianapolis applies this before you apply.

From the Library

What else needs a permit in Indianapolis

Every other permit type we have verified for this jurisdiction, with the rule that applies here.

ProjectPermit needed?ThresholdTypical fee
Deck PermitIt dependsdeck height above grade, excluding handrails, at which an improvement location permit becomes requiredDBNS Fee Schedule (Permits, as of 1.5.2026): Improvement Location Permit - Residential...
Electrical PermitIt dependsNot specifiedDBNS Fee Schedule (Permits, as of 1.5.2026), Electrical Permit (ELE): "Installation-New...
Fence PermitNo permit neededNot specifiedNo permit and therefore no permit fee is published for a residential fence.
HVAC PermitIt dependsNot specifiedDBNS Fee Schedule (Permits, as of 1.5.2026), Heating/Cooling Permit (HTG): "Heating...
Patio PermitIt dependspatio height above grade at which an improvement location permit becomes requiredDBNS Fee Schedule (Permits, as of 1.5.2026): Improvement Location Permit - Residential...
Pool PermitIt dependsabove-ground pool or hot tub depth, for a pool 15 feet or less in diameter, at which an improvement location permit becomes requiredDBNS Fee Schedule (Permits, as of 1.5.2026): Improvement Location Permit - Residential...
Roof Replacement PermitIt dependsNot specifiedDBNS Fee Schedule (Permits, as of 1.5.2026), Structural Permit - Residential (STR):...
Shed PermitIt dependsshed base area, for a shed under 15 feet high, not on a permanent foundation and with no utility connectionDBNS Fee Schedule (Permits, as of 1.5.2026), Structural Permit - Residential (STR)...
Solar PermitPermit requiredNot specifiedDBNS Fee Schedule (Permits, as of 1.5.2026): Electrical Permit (ELE), "Repair to...

Plumbing Permit in other Indiana localities

Everything above, sourced

Code references

National and state model-code sections the general guidance on this page is drawn from. They are not Indianapolis documents; the office above sets the local rules.

Verified by a person against the sources above on , not confirmed with City of Indianapolis Department of Business and Neighborhood Services (DBNS). Rules change; confirm before you build. How we verify.

Last checked: Report an error on this page

Compare Plumbing Permit requirements across Indiana localities

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