Bolthole Index

Adams County, Indiana

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

42Index Score / 100
#85 of 92 in Indiana

Adams County, Indiana requires building permits for new homes, commercial construction, and remodeling in county-administered areas1. Unincorporated Adams County is zoned, and the county also administers zoning in Geneva and Monroe2. A septic permit must come before the building permit and before construction begins3.

At a glance

Building permit
Required for new residential and commercial construction and remodeling in county-administered areas1
Small outbuilding
Under 200 square feet: no building permit, but a location permit is required1
Zoning
Yes in rural and unincorporated Adams County, plus Geneva and Monroe2
Septic permit
Required before the building permit and before construction3
Septic soils
Only 0.5% of soils rate free of severe limits for a conventional drain field4
RV or tiny-home living
Not confirmed; ask Building & Planning about the parcel and proposed use5
Owner-builder exemption
Not confirmed by the county's published material6
Private well permit
Not confirmed for Adams County; ask Environmental Health before drilling7

Who to call

Building permits

Adams County Building & Planning

Building, electrical and location permits; construction inspections; zoning, flood-map and address questions in county-administered areas

260-724-5305

[email protected]

313 W Jefferson Street, Suite 338, Decatur, IN 46733

Septic permits

Adams County Health Department, Environmental Division

On-site sewage system soil evaluations, plan review, permits and inspections

260-724-5326

313 W. Jefferson Street, Room 314, Decatur, IN 46733

Roads & driveways

Adams County Highway/Engineer Office

Driveway permits and work affecting county roads and rights-of-way

260-692-6222

201 North Polk Street, Monroe, IN 46772

Contact details are copied from each office’s official page and were checked against it on September 27, 2026.

Do you need a building permit 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 construction8. 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 the phases of construction, although the published material does not provide a complete inspection schedule9. Indiana also uses statewide building codes made from model codes amended for the state, with the applicable code depending on the type of structure10. 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 requirements11.

Who issues building and zoning permits in Adams County?

Adams County Building & Planning issues building, electrical, and location permits and performs construction inspections in its service area8. The office is at 313 W Jefferson Street, Suite 338, Decatur, IN 46733; call 260-724-5305 or email [email protected]8. Its jurisdiction covers rural Adams County and the towns of Geneva and Monroe8. A location permit checks proposed construction against zoning and flood-map parameters, while the building permit covers the construction work8. 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 applying12.

Does Adams County, Indiana have zoning?

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 construction8. We could not confirm countywide numeric rules for minimum lot size, minimum home size, setbacks, 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 rules8. 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 sold1314.

How do septic permits work in Adams County?

The Adams County Health Department's Environmental Health Division administers residential and commercial on-site sewage systems under state rules and the county ordinance15. 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 registered contractor submits the plan-review checklist and system drawing16. The Sanitarian needs at least two working days' notice before installation so required inspections can be arranged17. 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. Call Environmental Health at 260-724-5326 before commissioning a house plan or soil work18.

Can you live in an RV or tiny home in Adams County?

We could not confirm that Adams County allows full-time residential occupancy of an RV or tiny home on a private parcel. Indiana's published RV rules address regulated campgrounds, not living in an RV on an individually deeded lot, so those rules do not answer the private-land question19. 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 allowed8. 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 substitutes20.

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

  1. Ask Building & Planning to confirm the parcel's jurisdiction, zoning district, allowed residential use, setbacks, flood-map status, and location-permit requirements28.
  2. If public sewer is unavailable, contact Environmental Health for the septic packet and arrange the required soil test or site evaluation16.
  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 County718.
  5. Apply for the county building and location permits and confirm the required inspection sequence19.
  6. Apply to the Highway Department for a driveway connecting to a county road; a driveway within a state-highway right-of-way instead needs permission from INDOT2122.
  7. Contact Indiana DNR about development in a floodway because most such work falls under DNR jurisdiction in addition to local requirements23.

What should you check before buying land in Adams County?

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 soil site is unsuitable unless sanitary sewer is available43. Confirm zoning, setbacks, allowed dwellings, and flood-map status with Building & Planning before the purchase contingency expires28. Confirm legal road access and the county driveway permit with the Highway Department; state-highway access goes through INDOT instead2122. Farmland averages about $10,771 per acre, while the typical home value is $256,5612425. The median property-tax bill is $1,295 per year at an effective rate of about 0.7%2627. 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 center2829.

Watch-outs

  • A septic permit must be issued before the building permit and before construction begins3.
  • An outbuilding smaller than 200 square feet avoids the building permit but still needs a location permit1.
  • Full-time RV living, tiny-home occupancy, minimum dwelling size, setbacks, and an owner-builder exemption remain unconfirmed; ask Building & Planning about the exact parcel and proposal568.
  • The published residential building-fee schedule took effect in 2015, so verify current charges before budgeting12.

Sources

  1. Building & Planning, quoted and re-checked
  2. Building & Planning, quoted and re-checked
  3. Environmental, quoted and re-checked
  4. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  5. Building & Planning (2026 county census)
  6. (2026 county census)
  7. Recommended Standards For Private Water Wells (Indiana statewide rule), quoted and re-checked
  8. Adams County Building & Planning (co.adams.in.us)
  9. Building & Planning, quoted and re-checked
  10. Rules of the Indiana Fire Prevention and Building Safety Commission (Indiana statewide rule), quoted and re-checked
  11. Plan Review FAQs (Indiana statewide rule), quoted and re-checked
  12. Adams County Building Department Fee Schedule, quoted and re-checked
  13. Adams County Area Plan Commission Fee Schedule, quoted and re-checked
  14. 2023 County Recorders Resource Library (Indiana statewide rule), quoted and re-checked
  15. Environmental, quoted and re-checked
  16. Building & Planning, quoted and re-checked
  17. Environmental, quoted and re-checked
  18. Adams County Health Department, Environmental Division (co.adams.in.us)
  19. Environmental Public Health: 410 IAC 6-71 Campgrounds (Indiana statewide rule), quoted and re-checked
  20. 410 IAC 6-8.3 Residential On-Site Sewage Systems (Indiana statewide rule), quoted and re-checked
  21. Adams County Highway/Engineer Office (co.adams.in.us)
  22. INDOT Driveway Permit Guide 2024 (Indiana statewide rule), quoted and re-checked
  23. Water: Community Assistance & Information (Indiana statewide rule), quoted and re-checked
  24. Farmland value per acre (USDA census): Bolthole Index county data
  25. Typical home value (Zillow): Bolthole Index county data
  26. Median property tax bill: Bolthole Index county data
  27. Effective property tax rate: Bolthole Index county data
  28. Population density: Bolthole Index county data
  29. Distance to the nearest metro area: Bolthole Index county data

Written September 27, 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.

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County locator

Adams County in Indiana

42
County map
Adams County highlighted among the Indiana counties · colored by Index score

How Adams County scores

Seclusion20100% ev.
Self-Sufficiency30100% ev.
Admin Boringness4190% ev.
Durability81100% ev.
Property Autonomy71100% ev.
Carry Cost67100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$257kTypical home
0.7%Property tax
$10,771Land / acre
40.2"Annual rain
1.4% of yrsSevere drought
5.3 / yr (+5.2)Mid-century 100°F days
12 daysMid-century dry spell
1.6" (+7.6%)Mid-century 1-day rain
1.77×Wildfire change factor
100%Forward climate coverage
$1,237Home insurance / yr
1% / yrInsurance growth
0.73%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
167,625People within 30 min
4,645,769People within 2 hr
62,449Radius comparison (15 mi)
107.1People / sq mi
0.8%Federal land
100%Land at 15% slope or less
0.5%Septic soil without severe limits
1,085 acWorkable land screen
7.7%Wooded land
67.8 tonsBiomass / forest ac
51°FAvg temp

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Answers from the rulebook for Adams County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Adams County rules

  • Building permitRequired

    New residential and commercial construction and remodeling in areas administered by the Adams County Building and Planning Department.

    • Outbuildings under 200 square feet are an exception: no building permit is required, but a location permit is required.
    • Remodels, electrical upgrades, and temporary services are exceptions to the additional location-permit requirement stated in the fee schedule.
    “All of the above permits require an additional location permit except a remodel, electrical upgrade or a temporary service. No building permit is required for outbuildings, if less than 200 Sq. Ft. Only a location permit will be required.”
  • InspectionsRequired

    Projects inspected by Adams County Building and Planning.

    • The official page describes inspections in all phases of construction; the exact inspection schedule was not published on the page.
    “Inspections not ordered & performed $50.00 per incident”
  • County-wide zoningPresent (with conditions)

    County zoning in rural and unincorporated Adams County.

    • The department also has jurisdiction over the Towns of Geneva and Monroe; incorporated municipalities may administer their own land-use rules.
    “The Adams County Building and Planning Department has jurisdiction over the rural areas of Adams County as well as the Towns of Geneva and Monroe. [...] Decisions are made by the Board of Zoning Appeals and the Plan Commission with reasonable regard to existing conditions, the character of buildings erected in each district, the most desirable use for which the land my be adapted and the conservation of property values throughout the unincorporated areas of the county and the town of Geneva and Monroe.”
  • Who permits septicMixed (with conditions)

    Residential and commercial onsite sewage systems in Adams County.

    • The county program operates in compliance with Indiana State Department of Health rules and the county ordinance.
    “The Environmental Health Division is responsible for administering Adams County’s On-site Sewage Systems Program in compliance with Indiana State Department of Health (ISDH) Rules and the County Ordinance.”
  • Septic permitRequired

    New homes, remodels, and repairs of failing septic systems in Adams County.

    • A soil test/site evaluation and approved plan are required.
    • The permit must be obtained before the building permit and before starting construction.
    • The official process states a $100 permit fee.
    • If the soil site is unsuitable, the process ends unless connection to sanitary sewer can be made.

    permit fee: 100 USD

    “There is a $100 permit fee. The permit will not be issued without the payment of the $100 fee. THE PERMIT SHALL BE OBTAINED PRIOR TO OBTAINING THE BUILDING PERMIT AND PRIOR TO STARTING CONSTRUCTION.”
  • Septic inspectionRequired

    Installation of onsite sewage systems in Adams County.

    • The Sanitarian must be notified at least two working days before installation to arrange required inspections.
    • Failure to follow steps may result in permit revocation and a stop-work order.

    advance notice: >= 2 working days

    “In accordance with the Adams County Sewage Ordinance, the Sanitarian shall be notified at least two working days prior to starting installation, to arrange for required inspections of the septic system.”
  • Subdividing landRegulated (with conditions)

    Major and minor subdivision activity administered through the Adams County Area Plan Commission.

    • The official fee schedule lists separate fees for major subdivision, minor subdivision, and related plan-commission actions; the underlying subdivision ordinance text was not reviewed.

    major subdivision fee: 400 USD · minor subdivision division fee: 150 USD

    “Major Subdivision $400.00 [...] Division of a Minor Subdivision $150.00 [...] Subdivision Control Ordinance & Zoning Ordinance Book $30.00”
  • Permit feesPublished (with conditions)

    County building, location, plan-commission, subdivision, and related permit fees.

    • The building fee schedule is marked effective April 1, 2015; the plan-commission fee schedule is also marked effective April 1, 2015.
    • Building fees include $75 plus $0.07 per square foot for one- and two-family new construction/remodeling; outbuildings under 200 square feet require only a location permit.
    • Plan-commission fees include $400 for major subdivision, $150 for division of a minor subdivision, and $40 for an improvement location permit.

    one- and two-family new construction/remodeling base fee: 75 USD (plus $0.07 per square foot of floor area) · major subdivision fee: 400 USD · minor subdivision division fee: 150 USD · improvement location permit fee: 40 USD

    “Adams County Building Department Fee Schedule Ordinance 2015-2 Effective April 1st, 2015 [...] New Construction and Remodeling Projects $75.00 plus $0.07 per square foot of the floor area”
  • Permit processPublished (with conditions)

    Building and onsite-sewage permit processes administered by Adams County departments.

    • Building permits are issued for new construction and remodeling; location permits address zoning and flood-map parameters.
    • The septic process requires a packet, soil test/site evaluation, floor plan, contractor plan-review checklist and drawing, a $100 permit, site protection, and at least two working days’ notice before installation.
    • The septic permit must precede the building permit and construction; noncompliance may lead to revocation and a stop-work order.

    septic permit fee: 100 USD · septic installation notice: >= 2 working days

    “1. OBTAIN A PACKET OF INFORMATION AT THE HEALTH DEPARTMENT AND STOP BY THE OFFICE OF THE PLAN COMMISSION/BUILDING DEPARTMENT FOR THEIR REQUIREMENTS. [...] 7. OBTAIN THE $100 PERMIT FROM THE ACHD. [...] 9. NOTIFY THE ADAMS COUNTY HEALTH DEPARTMENT AT LEAST TWO WORK DAYS IN ADVANCE OF STARTING INSTALLATION OF THE SEPTIC SYSTEM.”

Indiana rules that apply here

  • Building code adoptedAdopted (with conditions)

    Statewide Indiana construction subject to the Indiana Fire Prevention and Building Safety Commission's adopted building codes, including the Indiana Building Code and Indiana Residential Code.

    • The adopted codes consist of model codes amended for Indiana.
    • The 2014 Indiana Building Code under 675 IAC 13-2.6 is currently in effect and became effective December 1, 2014.
    • The 2020 Indiana Residential Code under 675 IAC 14-4.4 is currently in effect and became effective December 26, 2019.
    • Specific applicability depends on the structure and code category.

    Indiana Building Code effective date: 2014-12-01 · Indiana Residential Code effective date: 2019-12-26

    “The Fire Prevention and Building Safety Commission creates Indiana codes by adopting model codes and amending them to apply in Indiana.”
  • Off-grid sanitationLimited

    Residential sanitation in Indiana where a dwelling is not connected, or cannot be connected, to a sanitary sewerage system.

    • The dwelling must be provided with a compliant residential on-site sewage system including a septic tank and a soil absorption system that has not failed.
    • A temporary sewage holding tank is subject to written Indiana Department of Health approval, with specified exceptions for failed systems, soil conditions after a construction permit, and certain district, utility, or municipal sewage plans.
    • A holding tank operated as a primary residential disposal method for a sewer connection plan is limited to not more than one year unless the period is extended upon documentation of satisfactory operation.
    • Drywells and cesspools are not allowed for construction or use as on-site sewage treatment in Indiana.

    holding-tank sewer-connection period: <= 1 year (may be extended upon documentation of satisfactory operation)

    “septic tank and a soil absorption system”
  • Well permitLimited

    Construction of residential water-supply wells and installation of well pumps in Indiana.

    • Indiana Department of Health standards state that several local health departments require a permit before residential water-supply well construction or well-pump installation.
    • The cited statewide source does not identify which local health departments require permits; local requirements must therefore be checked for the specific property.
    • Water-well drillers must be licensed by the Indiana Department of Natural Resources.
    “Several local health departments now require that a permit be obtained before construction of a residential water supply well or installation of a well pump.”
  • Agricultural exemptionAvailable (with conditions)

    Buildings used only for an agricultural purpose on the land where they are located and not used for retail trade, for purposes of Indiana state Class 1 construction-design-release requirements.

    • The building must be used only for an agricultural purpose.
    • The building must be located on the land where the agricultural purpose occurs.
    • The building must not be used for retail trade.
    • This is an exemption from Class 1/state design-release classification; it does not establish exemption from every local inspection, zoning, building, fire, or other applicable requirement.
    • Indiana's official Code Enforcement FAQ states that local units of government inspect agricultural buildings if they have an ordinance requiring inspection.

    state design-release classification: not Class 1 (Does not resolve local inspection or zoning requirements)

    “Buildings used only for an agricultural purpose on the land where they are located and not used for retail trade are not Class 1 structures.”
  • Driveway accessRequired

    Driveway connections and construction inside the right-of-way of Indiana state highways.

    • The governmental unit having jurisdiction over the street or highway must grant permission.
    • INDOT jurisdiction is limited to the Indiana state highway system; other governmental units may use the guide as a guideline.
    • Applications must be made through the INDOT Electronic Permit System.
    “State law requires the public to obtain permission from the governmental unit having jurisdiction over a street or highway”
  • Building in a floodplainLimited

    Development activities within the fringe portion of Indiana floodplains.

    • There is no state review or state permit for fringe development.
    • When a community adopts floodplain regulations, the regulations must be approved by the Department and may not be less restrictive than 312 IAC 10.
    • Most Indiana communities participate in the NFIP, which requires certain federal regulations to be adopted and enforced for the entire floodplain.
    • Local permits may still be required.
    “There is no State review of or permit issued for development activities within the fringe portion of the floodplain.”
    One more reviewed finding on this topic
    • Required — Most development activities in Indiana floodways, including fills, excavations, bridges, utilities, and non-residential structures.
      “The DNR Division of Water has jurisdiction in Indiana's floodways for most development activities.”
  • Campground & park staysLimited

    Recreational vehicle occupancy at a regulated Indiana campground campsite, rather than residential occupancy on an individually deeded lot or other land outside the rule's campground definition.

    • A campground is an area where campsites are leased or rented and provisions are made for ten or more tents, recreational vehicles, park models, or vacation mobile homes.
    • The campground must be established, operated, and maintained for recreational, health, education, sectarian, business, or tourist activities away from established residences.
    • The rule excludes primitive campgrounds, youth camps, and tracts of land divided into individually deeded lots.
    • No more than one recreational vehicle or one vacation mobile home may be allowed on a designated campsite at the same time.
    • Campground construction, additions, or significant construction changes require plans submitted at least ninety days before construction for department review and approval; the plans must be certified by a registered engineer or architect licensed in Indiana.
    • The rule does not establish a general statewide authorization for long-term residential RV occupancy outside regulated campgrounds.

    minimum campground provisions: >= 10 tents, recreational vehicles, park models, or vacation mobile homes · maximum recreational vehicles per designated campsite: 1 vehicle (one vacation mobile home may be used instead) · advance plan-submission period: >= 90 days (the department may waive plan review for a minor alteration)

    “No more than one (1) recreational vehicle or one (1) vacation mobile home”
    One more reviewed finding on this topic

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Owner-builder exemption — Owner-builder exemptions from building requirements.
  • Certificate of occupancy — Certificate-of-occupancy requirements for buildings in Adams County-administered areas.
  • Zoning districts — Published zoning-district map, list, or dimensional schedule for Adams County.
  • Minimum dwelling size — Minimum dwelling-size requirements.
  • Minimum lot size — Minimum lot-size requirements.
9 more unanswered
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Adams County, Indiana

Is Adams County a good place to live off-grid or homestead?

Adams County scores 42/100 on the Bolthole Index, a marginal county profile. Its strengths: a durable current and mid-century hazard profile and a stronger property-autonomy legal backdrop. Watch-outs: about 167,625 people within a 30-minute drive and workable self-sufficiency basics (40.2″/yr rainfall).

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

Adams County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Adams County Health Department, Environmental Health Division. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Adams County, Indiana?

Land in Adams County runs about $10,771 per acre, based on the latest county data.

What is the water situation in Adams County?

Adams County gets about 40.2" of rain a year, with severe drought in roughly 1.4% of years.

How remote is Adams County?

A representative private-land location has about 167,625 people within a 30-minute drive and 4,645,769 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

Off-grid gear

Going off-grid in Adams County means bringing your own water and power. The kit we’d start with:

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How Adams compares in Indiana

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