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

Yes. Adams County requires building permits for new residential and commercial construction and remodeling in areas served by the county Building and Planning Department¹. The department also issues electrical permits for new service or upgrades and location permits for new construction². An outbuilding smaller than 200 square feet is the stated exception to the building permit, but it still needs a location permit¹. County-inspected projects are inspected through all phases of construction, although the published material does not provide a complete inspection schedule¹. Indiana's state-adopted building and residential codes apply according to the structure and the authority having jurisdiction⁹. Do not assume a farm building is locally permit-free: a qualifying agricultural-only building may avoid state Class 1 design release, but that exemption does not decide county zoning, inspection, or permit requirements¹⁰.

Adams County Building & Planning issues building, electrical, and location permits and performs construction inspections in its service area². The office is at 313 W Jefferson Street, Suite 338, Decatur, IN 46733; call 260-724-5305 or email buildplan@co.adams.in.us². Its jurisdiction covers rural Adams County and the towns of Geneva and Monroe². A location permit checks proposed construction against zoning and flood-map parameters, while the building permit covers the construction work². That distinction matters when a small outbuilding is exempt from the building permit but still needs location approval¹. Published residential new-construction and remodeling fees are $75 plus $0.07 per square foot, but the cited schedule took effect in 2015, so confirm the current total with the office before applying¹.

Yes. Adams County Building & Planning administers zoning in rural and unincorporated Adams County and also has jurisdiction in Geneva and Monroe². Other incorporated municipalities may administer their own land-use rules, so confirm which jurisdiction controls the parcel before relying on a county answer². County zoning and flood-map compliance are reviewed through the location-permit process for new construction². In the county's zoning code, front-yard setbacks are measured from the edge of the nearest road right-of-way and depend on the road's classification: 150 feet from an arterial, 110 feet from a primary road, 90 feet from a secondary road, 50 feet from a section or half-section road and 40 feet from a local residential street¹¹. Minimum home size depends on the zone: a building in an R-1 single-family zone needs at least 950 square feet of floor area, and an R-2 multiple-family zone needs at least 840 square feet per dwelling, in both cases excluding unenclosed porches, terraces and garages⁵. We could not confirm minimum lot size, lot coverage or building height from the available county material. Give Building & Planning the parcel number and a sketch of the proposed house, accessory building, RV, or tiny home so the office can identify the zoning district and applicable dimensional rules². Dividing rural land is regulated too: the county publishes separate major- and minor-subdivision fees, and Indiana requires an approved, surveyor-certified plat to be recorded before lots outside municipalities are sold^12,13.

The Adams County Health Department's Environmental Health Division administers residential and commercial on-site sewage systems under state rules and the county ordinance³. For a new home, remodel, or failing-system repair, the process requires a soil test or site evaluation, an approved system plan, and a $100 permit before the building permit and before construction starts³. The applicant also provides a floor plan, and the contractor submits the plan-review checklist and system drawing¹⁴. The Sanitarian needs at least two working days' notice before installation so required inspections can be arranged¹⁴. Only 0.5% of Adams County soils rate without severe limitations for a conventional septic drain field, so make septic feasibility an early purchase contingency rather than assuming a conventional system will work⁴. If the soil scientist finds the site unsuitable for every on-site system, the process ends unless sanitary sewer is available¹⁵.

We could not confirm that Adams County allows full-time residential occupancy of an RV or tiny home as a primary residence on a private parcel. The zoning code does permit a mobile home or travel trailer as a temporary accessory use in unincorporated Adams County, but only on property that already has a permanent dwelling, and only when the unit is occupied by a family member living in that dwelling or by that resident's employee⁶. The unit may not sit in a required yard or setback, needs an improvement location permit before it is moved onto the property, and cannot be lived in until a certificate of occupancy is issued, which requires a County Board of Health letter approving the water supply and sanitary waste disposal⁶. Indiana's published RV and temporary-campground rules do not answer the private-land residential question^16,17. Adams County zoning applies in rural and unincorporated areas and in Geneva and Monroe, making the parcel's jurisdiction and zoning district central to the answer². Before buying an RV or tiny home, ask Building & Planning whether the unit is an allowed dwelling, where it may be placed, which location and building permits apply, and whether temporary occupancy during construction is allowed². Sanitation is a separate hurdle: an Indiana dwelling without sanitary sewer generally needs a compliant septic tank and working soil-absorption system, while drywells and cesspools are not allowed substitutes¹⁸.

1. Ask Building & Planning to confirm the parcel's jurisdiction, zoning district, allowed residential use, setbacks, flood-map status, and location-permit requirements^2,19.
2. If public sewer is unavailable, contact Environmental Health for the septic packet and arrange the required soil test or site evaluation¹⁴.
3. Obtain the approved septic plan and $100 septic permit before applying for the building permit or starting construction³.
4. Ask Environmental Health whether a county permit is required for a private well because Indiana guidance says some local health departments require one but does not identify Adams County^8,20.
5. Apply for the county building and location permits and confirm the required inspection sequence¹.
6. Apply to the Highway Department for a driveway connecting to a county road; Adams County requires a county-road driveway permit, while access within a state-highway right-of-way needs permission from INDOT^21,22.
7. Contact Indiana DNR about development in a floodway because most such work falls under DNR jurisdiction in addition to the county location-permit review^19,23. A waterway draining less than 1 square mile does not need a DNR Flood Control Act permit, though other state, federal or local permits can still apply²⁴.

Start with septic feasibility: only 0.5% of Adams County soils rate without severe limitations for a conventional drain field, and the county ends the septic process when a site is unsuitable for any on-site system unless sanitary sewer is available^4,15. Confirm zoning, setbacks, allowed dwellings, and flood-map status with Building & Planning before the purchase contingency expires^2,19. Confirm legal road access and the required county-road driveway permit with the Highway Department; state-highway access goes through INDOT instead^21,22. Farmland averages about $10,771 per acre, while the typical home value is $256,561⁴. The median property-tax bill is $1,295 per year at an effective rate of about 0.7%⁴. Adams County has about 107.1 people per square mile, and the nearest city of 100,000 or more is about 21 miles from the county center⁴.