Building permits, zoning and land rules in Marshall County, Indiana

At a glance

Building permit

Required before construction governed by the county building code begins¹

Zoning

Yes; the county has adopted zoning within its jurisdiction²

Septic permit

Required for new construction, replacement and qualifying repairs through county Health⁶

Private well

A county permit is required for a new well and for repairs or maintenance⁷

Owner-builder

A homeowner may apply, but the building-permit requirement still applies⁸

RV living

Not confirmed for a private lot; ask Planning about the parcel and proposed occupancy²⁹

Tiny home

No separate rule confirmed; zoning and building approval still need review²¹

Conventional septic soils

Countywide soil data rates 9.4% as free of severe conventional drain-field limitations¹⁰

Who to call

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

Do you need a building permit in Marshall County, Indiana?

Yes. Construction governed by Marshall County’s building chapter cannot begin until the Building Commissioner issues a valid permit¹. The application requires plans and specifications, a scaled plot plan, any required state design release, information requested by the commissioner and the fee¹¹¹. Marshall County has incorporated Indiana building-safety rules into its county code¹². Construction covered by the chapter is subject to inspections, even where a permit is not required, and occupancy requires a full, partial or temporary certificate of occupancy³⁴. A homeowner may apply for the permit, but that does not waive the permit requirement; an owner who will not perform all the work must identify the contractor⁸.

Who issues Marshall County building permits, and how do you reach them?

The Marshall County Building Department issues permits, conducts construction inspections and issues certificates of occupancy in unincorporated areas; it also serves Argos, Bourbon, Bremen, Culver and LaPaz¹³. The office is at 112 W Jefferson St, Room 302, Plymouth, and can be reached at (574) 935-8531¹³. The Planning Department shares that location and handles Improvement Location Permits, subdivisions, variances and other land-use applications; call (574) 935-8540⁹. Published county charges include a $50 inspection fee, a $100 combined permit fee and building fees that vary with home size; confirm the total for the proposed work with Building because electrical, plumbing and reinspection charges can also apply¹⁴.

Does Marshall County have zoning?

Yes. Marshall County has adopted a zoning ordinance within county jurisdiction, and the Planning Department administers zoning, subdivision and related regulations²⁹. Planning processes Improvement Location Permits, subdivisions, variances and other land-use applications⁹. Plymouth, Argos, Bourbon, Bremen and Culver have separate plan commissions for their incorporated and unincorporated planning areas, so identify the controlling commission before relying on district standards⁹. We could not confirm a single countywide minimum home size, lot size, setback, height or lot-coverage rule; ask the controlling commission for the parcel’s zoning classification and current standards⁹. Subdivision and subdivision-road and plat review are regulated within county jurisdiction¹⁵. The county agricultural exemption reviewed here applies only to erosion and sediment control, not generally to building permits, zoning, septic or other approvals¹⁶.

How do septic permits work in Marshall County?

The Marshall County Health Department administers residential onsite sewage permits; commercial new construction also needs Indiana Department of Health approval and a county permit⁵. New construction, replacement and qualifying repairs require a completed homeowner application, proposed design and fee, submitted in person⁶. New and replacement systems require a soil profile analysis by a certified and registered soil scientist, with at least three soil borings in the planned field area, and the analysis stays valid for seven years only while the bored area remains undisturbed; Health decides whether a repair qualifies for an exception¹⁷. The nonrefundable fee is $60 for new construction and $30 for replacement¹⁸. A septic permit is valid for two years, and if construction has not started within 180 days Health reviews the site again¹⁷. Health performs a site visit before design approval, and any required perimeter drain must be demonstrated and inspected¹⁹. Plan review can take 30 days, followed by another 30-day review after requested changes²⁰. Only 9.4% of mapped soils lack severe conventional drain-field limitations, so settle septic feasibility early¹⁰.

Can you live in an RV or tiny home on your land in Marshall County?

We could not confirm a Marshall County rule generally allowing long-term RV occupancy on a private lot, so take the parcel address and proposed occupancy to the controlling plan commission before buying²⁹. Indiana campground rules do not answer the private-lot question because they govern regulated campgrounds and exclude individually deeded lots²¹. We also could not confirm a separate tiny-home category or countywide minimum dwelling size. A tiny home intended as a dwelling should go through zoning and building review unless Planning and Building identify a specific classification or exception²¹. Occupancy of a structure governed by the county building chapter requires a certificate of occupancy⁴. A dwelling without sewer service needs compliant onsite sewage treatment; Indiana does not allow drywells or cesspools for that purpose²².

Building a home in Marshall County: the steps, in order

1. Identify the controlling plan commission, then confirm the zoning district, proposed use and site standards²⁹.
2. If sewer is unavailable, arrange the soil profile and proposed septic design; submit the application, plans and fee in person to Health⁶²⁰.
3. Plan the private well and submit its application, design and fee; the driller must be Indiana-licensed and registered in Marshall County⁷.
4. Prepare scaled plans and specifications, a scaled plot plan and any required state design release for the building application¹¹.
5. Pay the applicable building, inspection, trade and location fees¹⁴.
6. Obtain the building permit before construction and arrange required inspections¹³.
7. Do not occupy the home until the Building Commissioner issues a full, partial or temporary certificate of occupancy⁴.

What should you check before buying land in Marshall County?

Confirm zoning jurisdiction, subdivision status, legal road access, wastewater, water and flood exposure before treating Marshall County land as buildable^915236724. A driveway onto an Indiana state highway needs permission through INDOT’s electronic permit system; another road is controlled by the government with jurisdiction over it²³. Most floodway development falls under Indiana Department of Natural Resources jurisdiction, while flood-fringe work may avoid a state permit but still need local approval²⁴²⁵. Marshall County requires permits for new residential wells and for repairs or maintenance to existing wells⁷. The effective property-tax rate is about 0.7%, with a median annual bill near $1,260²⁶²⁷.

Watch-outs

• Plymouth, Argos, Bourbon, Bremen and Culver have separate plan commissions for their planning jurisdictions; confirm which office controls the parcel⁹.
• Only 9.4% of mapped county soils rate as free of severe conventional drain-field limitations, so obtain the parcel-specific soil analysis early¹⁰²⁸.
• The county agricultural exemption reviewed here covers erosion and sediment control only; it is not a blanket exemption from zoning, building permits or septic approval¹⁶.
• We could not confirm private-lot RV occupancy or a separate tiny-home rule; ask the controlling plan commission before purchase²⁹.

Sources

1. § 150.20 Building Permit Required, quoted and re-checked
2. § 155.02 Zoning Ordinance Adopted by Reference, quoted and re-checked
3. § 150.40 General Authority to Make Inspections and Investigations, quoted and re-checked
4. § 150.23 Certificate of Occupancy, quoted and re-checked
5. Marshall County Health Department: Onsite Sewage Systems - Septic System, quoted and re-checked
6. Marshall County Health Department: Onsite Sewage Systems - Septic System, quoted and re-checked
7. Marshall County Health Department: Well Permitting, quoted and re-checked
8. § 111.06 Applicant for Building Permits by Homeowner, quoted and re-checked
9. Marshall County Planning Department (co.marshall.in.us)
10. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
11. § 150.21 Application for Building Permit, quoted and re-checked
12. Rules of the Indiana Fire Prevention and Building Safety Commission, quoted and re-checked
13. Marshall County Building Department (co.marshall.in.us)
14. § 150.08 Fees, quoted and re-checked
15. § 155.01 Subdivision Ordinance Adopted by Reference, quoted and re-checked
16. Appendix B: Erosion and Sediment Control Ordinance, quoted and re-checked
17. Marshall County Health Department: Onsite Sewage Systems - Septic System, quoted and re-checked
18. Marshall County Health Department: Onsite Sewage Systems - Septic System, quoted and re-checked
19. Marshall County Health Department: Onsite Sewage Systems - Septic System, quoted and re-checked
20. Marshall County Health Department: Onsite Sewage Systems - Septic System, quoted and re-checked
21. Environmental Public Health: 410 IAC 6-71 Campgrounds (Indiana statewide rule), quoted and re-checked
22. 410 IAC 6-8.3 Residential On-Site Sewage Systems (Indiana statewide rule), quoted and re-checked
23. INDOT Driveway Permit Guide 2024 (Indiana statewide rule), quoted and re-checked
24. Water: Community Assistance & Information (Indiana statewide rule), quoted and re-checked
25. Water: Community Assistance & Information (Indiana statewide rule), quoted and re-checked
26. Effective property tax rate: Bolthole Index county data
27. Median property tax bill: Bolthole Index county data
28. Marshall County Health Department: Onsite Sewage Systems - Septic System, quoted and re-checked

Written October 10, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.