State building permit guide
Indiana building permits — complete guide (2026)
Indiana has a statewide building code and a relatively straightforward permitting process. Indianapolis (Marion County) has the largest permit volume. The state's lower cost of living translates to below-average permit fees.
Avg cost: $100–$500
Processing: 1–4 weeks
~38,000 permits/year
92 counties
$100–$500Average permit cost
1–4 weeksProcessing time
~38,000Permits issued/year
No statewide lawADU-friendly
Indiana requires a statewide building permit for new construction and significant remodeling. Trade permits (electrical, plumbing, HVAC) are issued locally and require licensed contractors. Indiana is one of the more affordable states for permits — fees are generally below the national average.
Permit costs by type — Indiana
| Permit type | Fee range | Processing time | Notes |
|---|---|---|---|
| Electrical | $65–$175 | 1–3 days | Licensed electrician required statewide |
| Plumbing | $60–$160 | 1–3 days | Licensed plumber required |
| HVAC / Mechanical | $70–$185 | 1–4 days | Furnace replacement high volume |
| Roofing | $75–$225 | 1–3 days | Permit required in most Indiana cities |
| New Construction | $500–$1,500 | 2–5 weeks | Below national average costs |
| Room Addition | $250–$700 | 1–4 weeks | Straightforward process |
| Deck / Patio | $100–$300 | 1–3 weeks | Frost-line footings — 30 inches |
| Pool | $150–$400 | 1–3 weeks | Barrier fence required |
| Fence | $40–$125 | 1–5 days | HOA rules often stricter |
| Solar | $70–$185 | 1–4 days | Growing market in Indiana |
How to get a building permit in Indiana
1
Find your local building department
Indiana permits are issued at the city or county level. Indianapolis (Develop Indy), Fort Wayne, and Evansville have online systems.
2
Statewide permit for new construction
Indiana issues state building permits for new construction through the Fire Prevention and Building Safety Commission. This is separate from local trade permits.
3
Submit application
Trade permits are handled locally. New construction statewide permits go through IDHS.
4
Pay fees
Indiana permit fees are generally moderate. Construction permits are based on project valuation.
5
Inspections
Cities have inspection divisions. Counties may use shared inspectors. Schedule in advance for rural areas.
Permit costs by county — top Indiana counties
Marion (Indianapolis) County
$125–$500
2–5 weeks
Hamilton (Carmel) County
$125–$425
1–4 weeks
Allen (Fort Wayne) County
$100–$375
1–4 weeks
St. Joseph (South Bend) County
$100–$350
1–3 weeks
Tippecanoe (Lafayette) County
$100–$325
1–3 weeks
Vanderburgh (Evansville) County
$100–$325
1–3 weeks
Frequently asked questions — Indiana permits
Does Indiana have a state building permit?
Yes for new construction — Indiana issues state building permits through the Fire Prevention and Building Safety Commission for new buildings. Remodeling and trade permits are issued locally.
What is the frost depth in Indiana?
Indiana's frost depth ranges from 30 inches in the south to 42 inches in the north. All exterior footings must extend below the frost line.
Can homeowners do their own work in Indiana?
Yes. Indiana homeowners can do most work on their primary residence, including electrical and plumbing, but must pull permits and pass inspections. Licensed contractors are required for commercial work.
Does Indiana allow ADUs?
There is no statewide ADU law in Indiana. Individual municipalities set their own ADU zoning rules. Indianapolis has not adopted a citywide ADU ordinance as of 2025.
Data sources: US Census Bureau BPS 2024 · Indiana Indiana Fire Prevention and Building Safety Commission · Shovels.ai permit aggregator