Brown County, Indiana generally requires a building permit before a person or business erects, constructs, alters or repairs a building or structure, although the county lists limited exemptions12. Brown County zoning applies in the unincorporated county, while the Town of Nashville has separate zoning34. Septic permits and inspections go through the Brown County Health Department56.
At a glance
- Building permit
- Generally required; limited exemptions include certain one-story detached accessory buildings of 120 square feet or less12
- Zoning
- Yes in unincorporated Brown County; Nashville has separate municipal zoning74
- Living in an RV or camper
- Not allowed as a long-term or permanent dwelling8
- Septic authority
- Brown County Health Department5
- Soils for a conventional septic field
- 0% of mapped soil is rated without severe limitations; obtain a site evaluation910
- Accessory dwelling unit
- One per lot, from 400 to 1,300 square feet and no larger than 75% of the primary building11
- Owner-builder
- An owner may apply, but no exemption from building permits or code compliance is established12
- Minimum home size
- Varies by zoning district and dwelling type; one-story single-family minimums range from 240 to 900 square feet13
Who to call
Building permits
Brown County Building Department
Building permits, plan review, contractor licensing on file, and construction inspections for Brown County
201 Locust Lane, 2nd Floor, Nashville, IN 47448
Zoning
Brown County Area Planning Commission
Zoning administration, zoning permits, home occupation and short-term-rental special exceptions, and addressing for Brown County
201 Locust Lane, 2nd Floor, Nashville, IN 47448
Septic permits
Brown County Health Department
Septic site evaluations, permits, inspections, investigations and contractor registration for Brown County
200 Hawthorne Drive, PO Box 281, Nashville, IN 47448
Septic permits
Brown County Health Department — Septic & Waste Water
Site evaluations, septic permits, installation inspections, malfunction investigations and contractor registration for Brown County
Roads & driveways
Brown County Highway Department
Driveway permits, logging permits and culvert installation for access onto Brown County roads
711 Greasy Creek Rd, Nashville, IN 47448
Contact details are copied from each office’s official page and were checked against it on October 9, 2026.
Off-grid gear
Going off-grid in Brown County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
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Do you need a building permit in Brown County, Indiana?
Yes, in most cases. Brown County requires a building permit before a person or business erects, constructs, alters or repairs a building or structure1. Listed exemptions include certain one-story detached accessory buildings of 120 square feet or less, retaining walls, fences and specified interior or replacement work, although separate plumbing, electrical or mechanical permits may still be required2. An owner may apply for the building permit, but the county material does not establish an owner-builder exemption from permits or code compliance12. Plans must conform to the adopted Indiana Building Code and applicable state and federal codes14. Residential permits require setback, trench-and-footing, rough-in and final inspections with at least 48 hours of notice15. A permitted residence or structure may not be occupied until the Brown County Building Commissioner issues a certificate of occupancy16.
Who is the Brown County building department, and how do you reach them?
The Brown County Building Department is at 201 Locust Lane, 2nd Floor, Nashville, IN 47448, and its phone number is 812-988-549017. The Building Department handles building permits, plan review, contractor records and construction inspections17. Brown County's application requires project information, ownership documentation, a site plan, zoning and floodplain compliance, Health Department approval when applicable, and driveway approval when applicable18. Residential applicants submit two identical plan sets, and the Building Department may require corrections and resubmission before issuing the permit18. Brown County also requires contractors to obtain an annual county contractor license19. The Area Planning Commission shares the Locust Lane address and phone number and handles zoning matters20. Ask the Building Department how its one-permit workflow applies to the exact parcel, because its webpage describes that system with unclear incorporated-area wording17.
Does Brown County have zoning?
Yes. Brown County's zoning ordinance governs unincorporated land, while the Town of Nashville has separate zoning34. Ask the Area Planning Commission for the parcel's mapped district because dwelling size, lot size, lot coverage, setbacks and height vary by district2113222324. One-story single-family minimums range from 240 square feet in forest reserve to 900 square feet in R1, while several other districts require 500 or 600 square feet25. A single-family lot using an individual septic system generally requires 3 acres in forest reserve, R1 and R2, or 0.5 acre in lake residential, general business and accommodation business, with separate subdivision exceptions22. Front setbacks are measured from the road centerline and vary by road26. Unincorporated Brown County permits one accessory dwelling unit per lot subject to size, sewage, setback, height and ownership restrictions11.
How do septic permits work in Brown County?
The Brown County Health Department issues septic permits for new and repaired on-site wastewater systems and specifies the required system and location5. Start with a soil analysis by a registered soil scientist; the Health Department uses it to prepare a specification sheet, then requires the application and bedroom affidavit, house plans, elevations, deed, plot plan and installer's layout27. The published septic-permit fees are $150 for pipe-and-gravel systems and $250 for Presby or mound systems, and the permit is valid for one year27. The department inspects every installation for compliance with Indiana rule 410 IAC 6-8.36. Call (812) 988-2255 or email bchealth@browncounty-in.gov28. Brown County's mapped soils show 0% rated without severe limitations for a conventional drain field, so make the site-specific soil evaluation an early purchase contingency910.
Can you live in an RV or tiny home on your land in Brown County?
Brown County prohibits using a camper or recreational vehicle for long-term living or as a permanent dwelling in the unincorporated county because those units do not meet residential square-footage and building-code requirements8. We could not confirm a rule for temporary camping on private property, so ask the Area Planning Commission before staying in an RV while building20. A primary tiny home is regulated as a dwelling: outside Nashville, it must meet the zoning district's floor-area minimum and separately obtain the required building permit25. A tiny home proposed as an accessory dwelling unit is limited to one per lot, from 400 to 1,300 square feet and no larger than 75% of the primary building29. An accessory dwelling unit must have compliant sewage service, cannot be sold separately or used as a short-term rental, and may be rented only for terms of at least 31 days29.
What are the steps to build a home in Brown County?
- Ask the Area Planning Commission for the parcel's zoning district and confirm minimum lot and dwelling size, lot coverage, setbacks, height, floodplain review and any special approvals21221323262430.
- Have a registered soil scientist prepare the soil analysis needed to begin the Health Department's septic-permit process27.
- Obtain the proper driveway approval before the building permit if new construction connects to a county, state or Nashville-maintained public road; no driveway permit is required for a private road or an existing driveway serving an addition or accessory structure31.
- Prepare the site plan, ownership documents and two identical residential plan sets, plus any required health, zoning and floodplain approvals18.
- Apply through the Building Department and confirm current submittal standards and fees; the published residence fee is $125 plus $0.07 per square foot32.
- Call for the setback, trench-and-footing, rough-in and final inspections with at least 48 hours of notice15.
- Complete the driveway, culvert, septic and drainage work, pass final inspection, and receive the certificate of occupancy before moving in33.
What should you check before buying land in Brown County?
Make septic feasibility the first contingency: 0% of Brown County's mapped soil is rated without severe limitations for a conventional drain field, and the Health Department uses certified soil analysis to decide site suitability910. Brown County is 90% wooded, while 39% of its land has a slope of 15% or less, so inspect the proposed house, septic and driveway locations together3435. Ask whether a parcel split has completed primary and secondary plat approval, any required road acceptance, and recording; Brown County's subdivision rules apply outside Nashville's jurisdiction36. For access from a county road, the Highway Department accepts applications at 711 Greasy Creek Rd, Nashville, IN 47448, and the published private-driveway application fee is $6537. A connection to a state highway instead goes through INDOT's electronic permit system38. Brown County's effective property-tax rate is about 0.5%, and its median annual property-tax bill is about $1,1413940.
Watch-outs
- The Building Department describes its one-permit system with unclear incorporated-area wording, so ask how that workflow applies to your specific parcel17.
- Brown County's temporary-camping rule could not be confirmed; ask the Area Planning Commission before planning an RV stay while building20.
- A property owner may apply for a building permit, but Brown County's published material does not establish an owner-builder exemption from permits, inspections, licensing or code compliance12.
Sources
- Building Permits in Brown County, quoted and re-checked
- Building Permits in Brown County, quoted and re-checked
- Brown County Indiana Zoning Ordinance, quoted and re-checked
- Brown County Indiana Zoning Ordinance, quoted and re-checked
- Brown County: Septic & Waste Water, quoted and re-checked
- Brown County: Septic & Waste Water, quoted and re-checked
- Brown County Zoning Ordinance, quoted and re-checked
- Planning Department, quoted and re-checked
- 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
- Brown County Health Department — Septic & Waste Water (in.gov)
- Brown County Zoning Ordinance, quoted and re-checked
- Building Permits in Brown County, quoted and re-checked
- Brown County Zoning Ordinance 2024, quoted and re-checked
- Building Permits in Brown County, quoted and re-checked
- Building Permits in Brown County, quoted and re-checked
- Building Permits in Brown County, quoted and re-checked
- Brown County Building Department (browncounty-in.gov)
- Building Permits in Brown County, quoted and re-checked
- Building Permits in Brown County, quoted and re-checked
- Brown County Area Planning Commission (browncounty-in.gov)
- Brown County Zoning Ordinance, quoted and re-checked
- Brown County Zoning Ordinance 2024, quoted and re-checked
- Brown County Zoning Ordinance 2024, quoted and re-checked
- Brown County Zoning Ordinance, quoted and re-checked
- Brown County Zoning Ordinance 2024, quoted and re-checked
- Brown County Zoning Ordinance, quoted and re-checked
- Brown County Health Department: Steps on how to obtain a septic permit, quoted and re-checked
- Brown County Health Department (in.gov)
- Brown County Zoning Ordinance 2024, quoted and re-checked
- browncounty-in.gov, quoted and re-checked
- Building Permits in Brown County, quoted and re-checked
- Building Permits in Brown County, quoted and re-checked
- Building Department, quoted and re-checked
- Wooded share of land: Bolthole Index county data
- Share of land at 15% slope or less: Bolthole Index county data
- Subdivision Control Ordinance, quoted and re-checked
- Brown County Highway Department (browncounty-in.gov)
- INDOT Driveway Permit Guide 2024 (Indiana statewide rule), quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written October 9, 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.