Building permits in Marion County, Indiana
Find the right authority before you build. Marion County permitting follows Indiana law — here is exactly who issues the permit and where to start.
Cities issue permits
City of Indianapolis — Department of Business and Neighborhood Services (BNS)
Marion County is governed under a consolidated city–county government (Unigov) with Indianapolis. The City of Indianapolis Department of Business and Neighborhood Services (BNS) issues building permits for the consolidated area. The excluded cities of Beech Grove, Lawrence, Southport, and Speedway operate their own separate permit offices.
Open the official permit portal →
Property owners should confirm whether their address falls within an excluded city before applying through Indianapolis BNS.
Check a home project's permit in Marion County, Indiana
Select a project to see its Indiana permit rule. Whether the county or your city issues it depends on incorporation status — see the authority note above.
Indiana
Exact permit fees are set by the local building department. WikEst shows the published or code-based range where one exists, linked to its official source — verify the final amount at the source before budgeting.
🏠 Accessory Dwelling Unit (ADU) permit fee in Indiana
Permit requiredCase by casecity authority
Permit fee range
Building permit fee set by the local building department; zoning/use approval also required.
Typical timeline
Varies
Setback
—
Exempt if
Not size-exempt
ADUs are allowed only where local zoning permits an accessory dwelling unit. A building permit is required for construction. Verify with your city (e.g., Indianapolis BNS or Fort Wayne Community Development).
Official sources: City of Indianapolis — Dept. of Business & Neighborhood Services (Permits) · Indiana Dept. of Homeland Security — Building Safety & Fire Prevention
Representative cities for Indiana: Indianapolis, Fort Wayne.
All 20 project fee ranges in Indiana
Official-source ranges where published; “By local jurisdiction” means no flat fee is published and the amount is set case by case.
| Project | Permit? | Authority | Fee range | Go / no-go |
|---|---|---|---|---|
| 🏠 Accessory Dwelling Unit (ADU) | yes | city | Building permit fee set by the local building department; zoning/use approval also required. | case-by-case |
| 🪵 Deck / Porch | conditional | city | Set by the local building department. | allowed |
| 🧱 Fence / Wall | conditional | city | Set by local jurisdiction | allowed |
| 🛖 Shed / Outbuilding | conditional | city | Set by local jurisdiction | allowed |
| 🪜 Basement Finish | yes | city | Building permit fee set by the local department. | allowed |
| 🚗 Garage / Carport | yes | city | Building permit fee set by the local department; zoning clearance may be required. | allowed |
| ☀️ Rooftop Solar PV | yes | city | Electrical/structural permit fee set by the local department. | allowed |
| 🌡️ HVAC Replacement | yes | city | Mechanical permit fee set by the local department. | allowed |
| 🍳 Kitchen Remodel | yes | city | Building permit fee; trade permits (plumbing/electrical) billed separately. | allowed |
| 🛁 Bathroom Remodel | yes | city | Building permit fee; trade permits (plumbing/electrical) billed separately. | allowed |
| 🏗️ Room Addition | yes | city | Building permit fee based on valuation; zoning and plan review apply. | allowed |
| 🪟 Window / Door Replacement | conditional | city | Set by local jurisdiction | allowed |
| 🏘️ Roof Replacement | yes | city | Roof-covering/structural permit fee set by the local department. | allowed |
| 🅿️ Driveway / Parking Pad | conditional | city | Set by local jurisdiction | allowed |
| 🏊 Swimming Pool / Spa | yes | city | Building permit fee; barrier fencing required by code. | allowed |
| 🧱 Retaining Wall | conditional | city | Set by local jurisdiction | allowed |
| 💥 Demolition / Teardown | yes | city | Demolition permit fee set by the local building department. | allowed |
| 🚰 Septic System | yes | state | Onsite sewage (septic) permit fee set by the Indiana Dept. of Health / local health department. | allowed |
| 🔌 EV Charger | conditional | city | Electrical permit fee set by the local building department. | allowed |
| ⚡ Standby Generator | conditional | city | Mechanical and/or electrical permit fee set by the local building department. | allowed |
Permit cheat-sheet (Indiana rules)
| Project | Permit? | Authority | Typical fee | Timeline | Go / No-Go | Key notes |
|---|---|---|---|---|---|---|
| 🏠 Accessory Dwelling Unit (ADU) | Permit required | city | Building permit fee set by the local building department; zoning/use approval also required. | — | Case by case | ADUs are allowed only where local zoning permits an accessory dwelling unit. A building permit is required for construction. Verify with your city (e.g., Indianapolis BNS or Fort Wayne Community Development). |
| 🪵 Deck / Porch | Conditional | city | Set by the local building department. | — | Generally allowed | Attached decks and any deck over 30 in above grade need a permit. Indianapolis requires a structural permit for deck work. Exempt: Decks more than 30 in above grade generally require a building permit under the Indiana Residential Code (IRC R105.2). |
| 🧱 Fence / Wall | Conditional | city | — | — | Generally allowed | Most Indiana municipalities do not require a building permit for residential fences, but front-yard height limits and HOA covenants may apply. Verify locally. |
| 🛖 Shed / Outbuilding | Conditional | city | — | — | Generally allowed | Detached one-story sheds below the local size threshold are generally exempt. Check your city’s residential code (e.g., Fort Wayne). Exempt: Many Indiana jurisdictions exempt one-story detached accessory sheds under ~120 sq ft; some cities use a higher threshold. |
| 🪜 Basement Finish | Permit required | city | Building permit fee set by the local department. | — | Generally allowed | Finishing a basement into habitable space requires permits for egress, framing, electrical, plumbing, and mechanical work. Sleeping rooms need code-compliant egress windows. |
| 🚗 Garage / Carport | Permit required | city | Building permit fee set by the local department; zoning clearance may be required. | — | Generally allowed | A new attached or detached garage requires a building permit. |
| ☀️ Rooftop Solar PV | Permit required | city | Electrical/structural permit fee set by the local department. | — | Generally allowed | Rooftop solar PV requires an electrical and structural permit, reviewed by the local building department. |
| 🌡️ HVAC Replacement | Permit required | city | Mechanical permit fee set by the local department. | — | Generally allowed | Furnace, AC, or heat-pump replacement requires a mechanical permit and inspection. |
| 🍳 Kitchen Remodel | Permit required | city | Building permit fee; trade permits (plumbing/electrical) billed separately. | — | Generally allowed | A permit is required when relocating plumbing/electrical, moving walls, or changing fixtures. Cosmetic-only work may be exempt. |
| 🛁 Bathroom Remodel | Permit required | city | Building permit fee; trade permits (plumbing/electrical) billed separately. | — | Generally allowed | A permit is required when relocating plumbing/electrical, moving walls, or changing fixtures. Cosmetic-only updates may be exempt. |
| 🏗️ Room Addition | Permit required | city | Building permit fee based on valuation; zoning and plan review apply. | Plan-review permits take longer; timelines vary by city. | Generally allowed | Room additions change the footprint and require a full building permit, zoning approval, and usually a site plan. |
| 🪟 Window / Door Replacement | Conditional | city | — | — | Generally allowed | Swapping windows or exterior doors in the same opening is generally exempt; enlarging or adding openings requires a permit. |
| 🏘️ Roof Replacement | Permit required | city | Roof-covering/structural permit fee set by the local department. | — | Generally allowed | Indianapolis requires a structural permit for a tear-off and reroof. Minor leak repairs may be exempt. Verify locally. |
| 🅿️ Driveway / Parking Pad | Conditional | city | — | — | Generally allowed | A permit may be required where the driveway connects to the street/right-of-way or involves significant grading. Indianapolis issues driveway permits. |
| 🏊 Swimming Pool / Spa | Permit required | city | Building permit fee; barrier fencing required by code. | — | Generally allowed | In-ground and above-ground pools need a permit and barrier fencing. Verify locally for setback and barrier rules. |
| 🧱 Retaining Wall | Conditional | city | — | — | Generally allowed | Height and whether the wall supports a surcharge (driveway, structure, or slope above) determine the permit threshold. Verify with your building department. |
| 💥 Demolition / Teardown | Permit required | city | Demolition permit fee set by the local building department. | — | Generally allowed | A full or partial structural demolition (including tearing down a house or detached garage) requires a demolition permit from the local building department, with utility disconnects, asbestos/lead-paint clearance for pre-1978 homes, and erosion/sediment controls as applicable. Verify locally (e.g., Indianapolis BNS). |
| 🚰 Septic System | Permit required | state | Onsite sewage (septic) permit fee set by the Indiana Dept. of Health / local health department. | — | Generally allowed | New or replacement onsite wastewater (septic) systems in Indiana are permitted through the Indiana Department of Health Onsite Sewage Systems Program, typically administered by the county or district health department (not the building department). A site evaluation and soil/load test are required before installation. |
| 🔌 EV Charger | Conditional | city | Electrical permit fee set by the local building department. | — | Generally allowed | A home EV charging station generally requires an electrical permit under the Indiana Residential Code / NEC (Article 625) for the new branch circuit, disconnect, and equipment. Hardwired or high-amperage units and panel upgrades need permits and inspection. Verify with your local building department. |
| ⚡ Standby Generator | Conditional | city | Mechanical and/or electrical permit fee set by the local building department. | — | Generally allowed | A permanently installed standby generator requires mechanical and electrical permits (NEC Articles 445/702) covering the transfer switch, gas/propane line, and connection. Verify with your local building department. |
Frequently asked questions
Who issues building permits in Marion County, Indiana?
City of Indianapolis — Department of Business and Neighborhood Services (BNS) is the permitting authority for Marion County. Permits are issued by the incorporated cities; the county handles only unincorporated areas. Start at the official portal linked above.
Do I go to the county or my city for a building permit in Marion County?
Permits are issued by the incorporated cities; the county handles only unincorporated areas.
What home projects need a permit in Marion County?
The same project types shown in the cheat-sheet above (ADU, deck, fence, shed, solar, and more) — rules follow Indiana state law. Whether the county or your city issues it depends on your property's incorporation status.
How do I apply for a permit in Marion County?
Use the official permit portal linked above. Most offices accept online submissions; have your plans, site information, and contractor details ready before applying.
Sources: City of Indianapolis — Permit, Land Use Petition, and Enforcement Cases (DMD/BNS) · Indiana Dept. of Homeland Security — Building Safety & Fire Prevention · City of Indianapolis — Dept. of Business & Neighborhood Services (Permits) · City of Indianapolis — Residential Permit Checklist · City of Fort Wayne — Community Development & Residential Code