Do I need a permit for retaining wall construction in Unincorporated Martin County?
Unincorporated Martin County does not issue residential building permits. Martin County has no county building department and issues no residential building permit. The Indiana Department of Homeland Security (IDHS) Local Building Officials directory (Martin County report, printed 9/27/2026) lists no local building official for 'All Areas Not In Jurisdictions Listed Below', only the IDHS state inspector (Matthew Prost, 317-232-1407), who handles Class 1 (commercial) structures; the state does not issue permits for one- and two-family dwellings. The county's official site lists no building, planning, or zoning office. The Martin County Health Department issues septic permits. The state residential code still applies to the work.
The requirements below come from Indiana rules and describe the standard the work must still meet. They are not a statement that Unincorporated Martin County will issue you a permit.
It depends. Whether retaining wall construction needs a permit in Unincorporated Martin County comes down to the details of your project.
Indiana deleted the IRC's Section R105, including the R105.2 list of work exempt from permit, so there is no statewide height exemption for retaining walls; any exemption comes from the local ordinance. Retaining walls, raised patios, or work near the foundation can bring the job under the residential code or local drainage rules; confirm with the local office. Before digging, the person responsible must notify the statewide one-call association at least two full working days before work begins (IC 8-1-26-16). This wall will hold up a driveway, patio, structure or sloped ground, which puts extra load on it (a surcharge). Model code exemptions for short retaining walls specifically exclude walls supporting a surcharge. Surcharged walls commonly need an engineered design, drainage behind the wall, and an inspection, because a failure can undermine whatever sits above it.
Get your exact answer
Answer a few questions to see the specific permits, documents, and next steps for your retaining wall construction in Unincorporated Martin County.
Check my projectDocuments you may need
- Permit or zoning application, where the local unit requires oneSometimes required
- Property address and parcel informationRequired
- Site plan showing the wall, grades, and drainageSometimes required
- Engineered design for a tall wall or one that supports a structure, driveway, or slopeVerification needed
Possible inspections
- Footing or base inspection where the local office requires one
- Drainage and backfill check where required
- Final inspection where a local permit is issued
Frequently asked questions
- Do I need a permit for retaining wall construction in Unincorporated Martin County?
- It depends. Whether retaining wall construction needs a permit in Unincorporated Martin County comes down to the details of your project. The documents and inspections sections on this page list what the building department typically asks for.
- Who issues the permit in Unincorporated Martin County?
- The local building department for Unincorporated Martin County handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
- How do I find out the exact requirements for my project?
- Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.
PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.