Marion County, IL: No Building Permit, No Zoning

Marion County, Illinois does not publish a clear county building-permit requirement, so confirm the parcel and project with county Zoning before building^1,2. Illinois issues no building permits for private work; any permit comes from the local government with jurisdiction, and cities such as Marion zone their own land^3,4. Septic permits outside public sewer come from the county Health Department^5,6.

At a glance

Building permit: County requirement not confirmed; Illinois leaves any permit to the local government with jurisdiction^1,3
Zoning: The county lists a Zoning function, but its coverage and district rules are not confirmed^1,2
Septic permit: Required for private sewage systems outside public-sewer service; handled by county Environmental Health^6,7
RV living: Long-term residential use on private land is not confirmed; ask county Zoning^1,2
Tiny home: No county-specific occupancy or minimum-size rule confirmed; ask county Zoning^1,2
Owner-builder exemption: Not confirmed for Marion County¹
Private well: Permit required before constructing, modifying or sealing a well^8,9
Septic soil difficulty: Only about 0.5% of soils lack severe limits for a conventional drain field¹⁰

Who to call

Zoning

Marion County Zoning

First contact for county zoning and parcel-specific land-use questions

(618) 548-3853

100 E Main St., Salem, IL 62881

Septic permits

Marion County Health Department, Division of Environmental Health

Private sewage design review, permits and installation inspections, plus private-water environmental health services

618-548-3878 ext. 215

ccain@marionco.illinois.gov

118 Cross Creek Boulevard, Salem, Illinois 62881

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 Marion County, Illinois?

Marion County's building-permit requirement could not be confirmed from a county permit page or ordinance.

Marion County's building-permit requirement could not be confirmed from a county permit page or ordinance¹. Illinois does not issue building permits, review plans or inspect privately funded construction; any such requirement is handled by the municipality, village, city or county with jurisdiction³. Illinois nevertheless has statewide baseline building-code requirements, including rules for places that have not adopted their own code³. For land outside a city or village, call Marion County Zoning with the parcel number and a description of the proposed work before ordering plans or materials². For land inside a municipality, ask that municipality because the applicable local government may set its own permit process³.

Who handles building and zoning questions in Marion County?

Marion County's official directory lists Zoning at the county courthouse, with a direct telephone line, but it does not list a separate building department.

Marion County's official directory lists Zoning at the county courthouse, with a direct telephone line, but it does not list a separate building department². The county Zoning contact is therefore the practical first stop for an unincorporated parcel, especially because no county building-permit or inspection rule could be confirmed^1,2. Ask the office to identify the authority having jurisdiction, confirm whether the site is inside county or municipal jurisdiction, and state which approvals apply to the exact project³. Illinois permits a county to adopt and enforce building codes in unincorporated areas, but state law does not prove that Marion County has done so³. The State does not issue a private-project occupancy certificate either; any such document is local³.

Does Marion County have zoning?

Marion County's official directory lists a county Zoning function, but the geographic coverage, zoning map and district schedule could not be confirmed.

Marion County's official directory lists a county Zoning function, but the geographic coverage, zoning map and district schedule could not be confirmed^1,2. Illinois county zoning authority applies outside municipalities that have their own zoning ordinances, and actual setback and height limits come from the applicable local district or ordinance¹¹. That means a county-office listing alone does not establish the allowed use, minimum lot size, setback, building height or minimum home size for a specific parcel¹. Ask Marion County Zoning to identify the parcel's jurisdiction and district before relying on a seller's description of the land². If the parcel lies inside a city or village, obtain the rule from that municipality rather than assuming the county answer controls¹¹. The City of Marion has its own zoning ordinance with named districts, and inside city limits it prohibits using an accessory structure as a dwelling; that city rule does not govern unincorporated county land⁴.

How do septic permits work in Marion County?

The Marion County Health Department's Division of Environmental Health reviews and approves private sewage designs, issues permits and inspects systems during installation in areas not connected to public sewer^6,7. A new or replacement septic permit costs $75, and the published septic realty inspection fee is also $75⁹. A new or renovated system must be installed by an Illinois-licensed private sewage contractor or the homeowner, and permitted through the Health Department¹². Illinois requires plan approval before construction of a new private sewage system begins and advance notice before the work starts¹³. Soil suitability deserves early attention: only about 0.5% of Marion County soils are rated without severe limitations for a conventional drain field¹⁰. That figure does not decide an individual lot, but it supports arranging design review and site evaluation before treating a conventional system as feasible^6,10. A private well follows a separate path: an Illinois Department of Public Health well-permit application and a $100 application fee come first, then 48 hours' notice to the Division of Environmental Health before installation^7,14.

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

Residential RV occupancy and tiny-home occupancy on private land in Marion County could not be confirmed from a county ordinance.

Residential RV occupancy and tiny-home occupancy on private land in Marion County could not be confirmed from a county ordinance¹. Illinois campground regulation allows camping in licensed campgrounds, but that framework does not establish permission to live in a single RV on a private parcel¹⁵. A tiny home still needs an answer on allowed use, zoning dimensions, sanitation and the applicable building-code path^1,3,6. Illinois approves several off-grid human-waste options, including compost toilets, subject to technical requirements, while other domestic wastewater still requires a conventional private sewage disposal system¹⁶. Before moving an RV or tiny home onto land, ask Marion County Zoning about occupancy and placement and ask Environmental Health about wastewater disposal^2,7.

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

Ask Marion County Zoning to confirm the parcel's jurisdiction, zoning district, allowed residential use and local approval path.

Ask Marion County Zoning to confirm the parcel's jurisdiction, zoning district, allowed residential use and local approval path^1,2.

Confirm the applicable building-code and inspection route because Illinois has a statewide baseline but leaves private-project permits and inspections to local government³.

If public sewer is unavailable, take the site and preliminary house plan to Environmental Health for private sewage design review and a permit⁶.

Submit the Illinois Department of Public Health well-permit application and $100 fee before constructing a private well, and give the Division of Environmental Health 48 hours' notice before installation^8,14.

If access enters a state-maintained road, obtain the required IDOT right-of-way permit before work begins¹⁷.

Schedule every locally required building inspection and the Health Department's septic inspection during installation^3,5.

What should you check before buying land in Marion County?

Start with jurisdiction and zoning because Marion County lists a Zoning function but does not publish enough detail to confirm a parcel's permitted uses or dimensions.

Start with jurisdiction and zoning because Marion County lists a Zoning function but does not publish enough detail to confirm a parcel's permitted uses or dimensions^1,2. Investigate septic feasibility early because only about 0.5% of county soils are rated without severe limits for a conventional drain field¹⁰. Check flood mapping and permit exposure because regulated Illinois floodway construction requires state authorization under defined conditions¹⁸. Verify legal road access, and remember that work in a state-maintained right-of-way needs an IDOT permit¹⁷. Marion County is mostly gentle terrain, with about 91.8% of land at a slope of 15% or less, but parcel-level drainage and soil conditions still matter¹⁰. The effective property-tax rate is about 1.7%, with a median annual bill near $1,709¹⁰.

Watch-outs

A county Zoning listing is not proof that every Marion County parcel has the same zoning rules; confirm jurisdiction and district with the office^1,2.
No Marion County owner-builder exemption could be confirmed, so ask the authority having jurisdiction before assuming self-performed work changes permit or inspection requirements^1,3. Illinois lets an owner who will live in a single-family home do the plumbing, but that exemption covers plumbing only, not building permits generally¹⁹.
Conventional septic conditions are difficult across nearly all county soils, so make wastewater feasibility a purchase contingency rather than a post-closing task¹⁰.

Sources

19 official pages, each quoted and re-checked · written October 10, 2026

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.

Off-grid gear

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

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Compared with neighboring counties

Unlike 4 of its 6 neighbors, Marion County requires no county building permit for a home.

Rule	Marion County	Fayette County	Jefferson County	Clay County	Clinton County	Effingham County	Bond County
Building permit	Not required	Limited	Required	Not required	Required	Not required	Required
County zoning	No	Yes	Yes	No	Yes	No	Yes
Septic permits	County Health Dept.	County Health Dept.	County Health Dept.	County Health Dept.	County Health Dept.	County Health Dept.	County Health Dept.

Cities and towns in Marion County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet covered: Village of Alma · Village of Central City · Centralia Township · Village of Iuka · Village of Junction City · Village of Kell · Kinmundy · Odin Township · Village of Odin · Omega Township · Village of Patoka · Romine Township · Salem · Salem Township · Sandoval Township · Village of Sandoval · Tonti Township · Village of Vernon · Village of Walnut Hill

Answers from the rulebook for Marion County

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

Marion County rules

Building permitNot required
Construction in Marion County's non-incorporated areas.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
Owner-builder exemption · follows from the permit answerNot needed
Unincorporated Marion County: no county building permit is required, so there is no permit to be exempt from and you may build your own home. State licensing for electrical, plumbing and HVAC work may still apply.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
County-wide zoningAbsent
County zoning in Marion County's non-incorporated areas.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
Local zoningVaries (with conditions)
County aggregate of local zoning: Marion County has no County zoning code in its non-incorporated areas, while the City of Salem states that its zoning code governs within Salem and for 1.5 miles beyond its corporate limits.
- This is an aggregate conclusion; the County does not administer Salem's zoning code.
- The City of Salem minutes state that Salem's zoning authority extends 1.5 miles beyond the City's corporate limits.
Salem extraterritorial zoning jurisdiction: 1.5 miles (Beyond Salem corporate limits, as stated in the City minutes.)
“Salem’s Zoning authority stretches out 1.5 miles beyond our corporate limits as provided by Illinois law found in 65 ILCS 5/11-13-1, cited in appropriate part below. In summary, Marion County has not adopted its own zoning code, and as such, Salem’s Code governs out to 1.5 miles.”
City of Salem Council Minutes, June 3, 2019 ↗Re-checked Nov 13, 2026
Minimum dwelling sizeNone
Minimum dwelling-size controls imposed by Marion County in non-incorporated areas.
- This finding addresses County codes, zoning, and permitting only; it does not resolve non-County or non-zoning requirements.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
Minimum lot sizeNone
Minimum lot-size controls imposed by Marion County in non-incorporated areas.
- This finding addresses County codes, zoning, and permitting only; it does not resolve non-County or non-zoning requirements.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
SetbacksNone
Setback controls imposed by Marion County in non-incorporated areas.
- This finding addresses County codes, zoning, and permitting only; it does not resolve non-County or non-zoning requirements.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
Lot coverage · by state lawNone
Unincorporated Marion County: no county rule sets this, because Marion County's own reviewed answer confirms it has no county-wide zoning ordinance.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
Building height · by state lawNone
Unincorporated Marion County: no county rule sets this, because Marion County's own reviewed answer confirms it has no county-wide zoning ordinance.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
Living in an RVUnrestricted
RV occupancy on private land in Marion County's non-incorporated areas, as regulated by County zoning.
- This finding addresses County codes, zoning, and permitting only; it does not resolve non-County or non-zoning requirements.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
Camping on your land · by state lawUnrestricted
Unincorporated Marion County: no county rule sets this, because Marion County's own reviewed answer confirms it has no county-wide zoning ordinance.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
Tiny homesUnrestricted
Tiny-home occupancy in Marion County's non-incorporated areas, as regulated by County zoning.
- This finding addresses County codes, zoning, and permitting only; it does not resolve non-County or non-zoning requirements.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
Manufactured homes · by state lawUnrestricted
Unincorporated Marion County: no county rule sets this, because Marion County's own reviewed answer confirms it has no county-wide zoning ordinance.
- Septic, floodplain, subdivision and health rules still apply; cities and towns set their own rules inside their limits.
- The cited County statement is limited to non-incorporated areas.
“Previous correspondence was issued verifying that Marion County does not have any codes, zoning or permitting requirements in the Non- Incorporated Areas.”
Marion County Full Board Meeting Minutes, March 25, 2025 ↗Re-checked Nov 13, 2026
Who permits septicMixed (with conditions)
Private sewage systems in Marion County.
- IDPH regulates private sewage disposal statewide.
- The Marion County Health Department administers permitting locally under the Illinois Private Sewage Disposal Licensing Act and Code.
“The private sewage program is performed in accordance with the Illinois Department of Public Health’s Private Sewage Disposal Licensing Act and Code”
Marion County Full Board Meeting Minutes, February 25, 2025 ↗Re-checked Oct 3, 2026
One more reviewed finding on this topic
- County — Private sewage systems in Marion County administered through the Marion County Health Department.
  “The local health department works to protect public health and the environment by reviewing and approving system designs, issuing permits, and performing inspections during installation to ensure compliance with state and local codes.”
  Private Sewage Program ↗Re-checked Oct 2, 2026
Septic permitRequired
Any new or renovated private sewage system in Marion County.
- The system must be installed by an Illinois-licensed private sewage contractor or the homeowner.
- The permit is through the Marion County Health Department.
- IDPH rules and code apply.
“Any new or renovated system must be installed by an Illinois licensed private sewage contractor or the homeowner and permitted through the Marion County Health Department.”
Marion County Full Board Meeting Minutes, February 25, 2025 ↗Re-checked Oct 3, 2026
Septic inspectionRequired
Private sewage system installation in Marion County.
- Inspections occur during installation.
- The health department may enter the property to conduct the inspection.
“The local health department works to protect public health and the environment by reviewing and approving system designs, issuing permits, and performing inspections during installation to ensure compliance with state and local codes.”
Private Sewage Program ↗Re-checked Oct 2, 2026
Well permitRequired
Private water well installation in Marion County, Illinois.
- Before installation, the Illinois Department of Public Health Application for Permit to Construct, Modify or Abandon a Water Well must be submitted.
- The $100.00 application fee payable to the Illinois Department of Public Health must be submitted.
- A permit is granted only if the proposed water well meets the Illinois Water Well Construction Code.
- The applicant must give 48 hour notification to the Division of Environmental Health prior to installation.
- Community water wells are excluded from the IDPH private-water program described in the statewide source.
application fee: 100 USD (payable to the Illinois Department of Public Health) · installation notice: 48 hours (notification to the Division of Environmental Health prior to installation)
“Before a private water well can be installed, Illinois Department of Public Health, Application for Permit to Construct, Modify or Abandon a Water Well and the $100.00 application fee payable to the Illinois Department of Public Health must be submitted. If the proposed water well meets the requirements of the Illinois Water Well Construction Code, the applicant will be granted a permit. It is then the responsibility of the applicant to give 48 hour notification to the Division of Environmental health prior to installation.”
Private Water Program ↗Re-checked Oct 6, 2026
Permit feesPublished
Marion County Health Department environmental-health permits and inspections.
- The published fee schedule lists environmental-health fees; it does not establish building-permit fees.
- The page lists the Marion County Health Department Division of Environmental Health as the administering office.
new well permit: 100 USD · existing well/testing: 25 USD · new/replacement septic permit: 75 USD · septic realty inspection: 75 USD · water realty inspection: 75 USD
“Water Permits | | New Well | $100.00 | Existing Well/Testing | $25.00 Septic Permit | | New/Replacement | $75.00 Reality Inspection | | Septic | $75.00 | Water | $75.00”
Permit Fees | Marion County Health Department ↗Re-checked Sep 26, 2026
Permit processPartial
Marion County Health Department private-water and private-sewage permitting processes.
- Private sewage applications involve design review, permit issuance, and installation inspections.
- Private wells require an IDPH application and fee, plus 48-hour notice to county environmental health before installation.
“The local health department works to protect public health and the environment by reviewing and approving system designs, issuing permits, and performing inspections during installation to ensure compliance with state and local codes.”
Private Sewage Program ↗Re-checked Oct 2, 2026

Illinois rules that apply here

Building code adoptedPartial
Building-code requirements statewide in Illinois, including residential and commercial construction subject to the Capital Development Board Act baseline requirements.
- Effective 2025-01-01, Illinois requires statewide baseline building-code requirements.
- Local governments may adopt building codes, but they are not required to adopt codes; jurisdictions that do not adopt a code are treated as non-building-code jurisdictions and must follow the applicable state-law baseline requirements.
- For jurisdictions with adopted codes, local codes must regulate structural design at least as stringently as the applicable IRC, IBC, or IEBC baseline.
- Commercial buildings in non-building-code jurisdictions and state-funded buildings are subject to the state-listed codes and qualified-inspection requirements.
- Residential requirements differ depending on whether the jurisdiction has adopted a compliant building code and whether the home purchaser and builder agree to an alternative code.
statewide baseline effective date: 2025-01-01 · local code structural minimum for residential buildings: IRC minimum structural requirements · local code structural minimum for commercial new buildings: IBC minimum structural requirements · local code structural minimum for existing commercial buildings: IEBC minimum structural requirements
“The State of Illinois recently passed legislation (Public Act 103-0510) changing the Capital Development Board Act to require statewide building codes effective 1/1/2025. [...] Commercial buildings in jurisdictions that have not adopted a building code AND state funded buildings. [...] Starting 1/1/25 local codes must regulate the structural design in a manner that is at least as stringent as the IBC© for new buildings or IEBC© for existing buildings. [...] Residential buildings in jurisdictions that have not adopted a building code where agreed to by the home purchaser and home builder. [...] Residential buildings in jurisdictions that have adopted a building code. [...] Starting 1/1/25 local codes must regulate the structural design in a manner that is at least as stringent as the IRC©.”
Illinois Codes ↗Re-checked Sep 9, 2026
4 more reviewed findings on this topic
- Adopted — Statewide Illinois building-code baseline applicable to construction in Marion County, including jurisdictions that have not adopted a local building code.
  “The State of Illinois recently passed legislation (Public Act 103-0510) changing the Capital Development Board Act to require statewide building codes effective 1/1/2025.”
  Building Codes and Regulations ↗Re-checked Oct 4, 2026
- Partial — New residential construction in Illinois, including non-building-code portions of Marion County outside incorporated municipalities.
  “The State of Illinois recently passed legislation (Public Act 103-0510) changing the Capital Development Board Act to require statewide building codes effective 1/1/2025.”
  Building Codes and Regulations ↗Re-checked Oct 7, 2026
- Adopted — Statewide Illinois building-code baseline requirements, including residential and commercial construction in Marion County.
  “Please be advised that the State of Illinois recently passed legislation (Public Act 103-0510) changing the Capital Development Board Act to require statewide baseline building codes effective 1/1/2025. Locally adopted building codes must comply with the requirements of the Act.”
  Building Codes and Regulations ↗Re-checked Oct 7, 2026
- Adopted — Statewide baseline building-code requirements for residential construction in Illinois, including jurisdictions with and without locally adopted building codes.
  “Please be advised that the State of Illinois recently passed legislation (Public Act 103-0510) changing the Capital Development Board Act to require statewide baseline building codes effective 1/1/2025. Locally adopted building codes must comply with the requirements of the Act.”
  Building Codes and Regulations ↗Re-checked Sep 26, 2026
InspectionsLimited
Privately funded construction statewide in Illinois, as to inspections performed by the State rather than by a local authority having jurisdiction.
- The Illinois Capital Development Board does not perform building-code inspections for privately funded construction.
- If inspections are required, they are addressed by the applicable unit of local government.
- A local municipality or county may be a non-building-code jurisdiction, in which case applicable state baseline requirements and inspection-certification provisions may apply.
“No. If any of these are required, they would be addressed by the unit of local government.”
Illinois Codes FAQ ↗Re-checked Sep 26, 2026
One more reviewed finding on this topic
- Not required — Building-code-compliance inspections performed by the State of Illinois for privately funded construction.
  “No. If any of these are required, they would be addressed by the unit of local government.”
  Illinois Codes FAQ ↗Re-checked Sep 9, 2026
Certificate of occupancyLimited
Occupancy permits or certificates for privately funded construction in Illinois.
- The State does not issue occupancy permits for privately funded construction.
- If an occupancy permit is required, it is addressed by the applicable unit of local government.
“No. If any of these are required, they would be addressed by the unit of local government.”
Illinois Codes FAQ ↗Re-checked Sep 26, 2026
One more reviewed finding on this topic
- Not required — Issuance of occupancy permits or certificates by the State of Illinois for privately funded construction.
  “No. If any of these are required, they would be addressed by the unit of local government.”
  Illinois Codes FAQ ↗Re-checked Sep 9, 2026
Off-grid sanitationAllowed (with conditions)
Off-grid disposal of human wastes through privies, portable toilets, recirculation toilets, incinerator toilets, and compost toilets statewide in Illinois.
- Other domestic wastes must be disposed of in a conventional private sewage disposal system.
- Compost toilets may also be used for other organic domestic wastes.
- Privies have construction, capacity, venting, maintenance, and abandonment requirements.
- A privy pit must have a minimum capacity of 50 cubic feet per seat.
- A privy must be pumped when filled to within 18 inches of the bottom of the riser.
- Vault privies are required where groundwater or limestone formations are within 4 feet of the bottom of the pit.
- Recirculating toilets must meet NSF International/ANSI Standard 41 and residuals must go to an approved public or private sewage disposal system.
- Incinerator and compost toilets have separate maintenance and disposal requirements; compost toilets must meet NSF International/ANSI Standard 41.
privy pit minimum capacity: >= 50 cubic feet per seat · privy pumping trigger: <= 18 inches from bottom of riser (Pump when filled to within this distance.) · vault-privy groundwater or limestone separation: < 4 feet from bottom of pit (Watertight, non-metal vaults are required where the condition applies.)
“Privies, portable toilets, recirculation toilets, incinerator toilets and compost toilets are approved for private sewage disposal of human wastes.”
77 Ill. Adm. Code 905.130 Human Waste Disposal ↗Re-checked Sep 9, 2026
Mandatory utility hookupWater and sewer (with conditions)
Each building in Illinois intended for human habitation or occupancy, where the Illinois Plumbing Code applies to its plumbing-system design or installation.
- Water may be supplied by a public water system, semi-private water system, or private water supply constructed under 77 Ill. Adm. Code 920 or 930.
- Sewage may be connected to a public sewer system or a private sewage disposal system constructed under 77 Ill. Adm. Code 905.
- All installations must also comply with applicable State and local laws, ordinances, rules, regulations, and local codes.
- Individually owned residences sharing a common wall or ownership right with ground-floor access, such as townhouses or rowhouses, are separate buildings and require separate connections; a condominium-association residence may instead use one public-water service line to a centralized manifold or meter room with independent shutoff valves, a main shutoff valve at the property line, and compliance with local water-department or water-authority requirements.
- A private water supply may be interconnected with a public water system only when it is located and constructed under 77 Ill. Adm. Code 920 and 925 and the public system is protected against backflow and back siphonage under Section 890.1130; no physical connection is permitted between a potable-water system and a non-potable-water source.
“Each building [...] shall have a connection to a public water system, [...] and a connection to a public sewer system or private sewage disposal system”
77 Ill. Adm. Code 890.170 — Sewer and/or Water Required ↗Re-checked Nov 4, 2026
Agricultural exemptionAvailable
Agricultural experiences conducted as a secondary use with agricultural production on a farm in Illinois.
- The activity must be agriculture-related, a secondary use in conjunction with agricultural production, and occur on a farm.
- The activity must be open to the public with the intended purpose of promoting or educating the public about agriculture, agricultural practices, agricultural activities, or agricultural products.
- The property’s primary use must be agricultural production.
- The exemption prevents a county from requiring a conditional use permit, special use permit, special exception, or variance; the statute does not state that other applicable State or local requirements are waived.
“a county shall not require a conditional use permit [...] or variance for agricultural experiences on property of which the primary use is agricultural production.”
Public Act 102-0492 — Agricultural Experiences Act ↗Re-checked Nov 4, 2026
Driveway accessRequired
Work within the right-of-way of an Interstate, U.S. state route, Illinois state route, or state-maintained roadway, including access-driveway requests to State highways.
- A permit must be obtained before work begins.
- Requirements may vary by IDOT district; the applicant must contact the district office for specific requirements.
- IDOT's access-driveway handbook guides what is allowable for highway access requests.
“Per 605 ILCS 5/4 209, IDOT requires a permit when working within the right-of-way of an Interstate, U.S. state route, Illinois state route, or state maintained roadway. A permit must be obtained prior to the start of any work and a copy of the approved permit must be at the worksite at all times.”
Highway Permits ↗Re-checked Sep 9, 2026
Building in a floodplainRequired
Construction activities in regulated Illinois floodways and, where a floodway has not been delineated, generally work anywhere in the floodplain.
- For downstate streams, IDNR Division permitting applies to floodways of streams draining at least one square mile in urban areas or ten square miles in rural areas.
- In northeastern Illinois, Part 3708 applies to identified floodways in Cook County excluding Chicago, DuPage, Kane, Lake, McHenry, and Will Counties.
- Some minor activities are automatically authorized by statewide or regional permits if their terms and conditions are met.
- For State-owned property, Part 3710 requires a permit for all development activity in FEMA-mapped floodplains.
urban stream drainage area threshold: >= 1 square mile (regulated floodways under Part 3700) · rural stream drainage area threshold: >= 10 square miles (regulated floodways under Part 3700)
“All construction activities in the floodways of streams (the channel and the adjacent portion of the floodplain that is needed to safely convey and store flood waters) in urban areas where the stream drainage area is one square mile or more or in rural areas where the stream drainage area is ten square miles or more must be permitted by the Division prior to construction.”
Permit Program ↗Re-checked Sep 9, 2026
Short-term rentalsLimited
Short-term rentals in Illinois where at least one room is rented for fewer than 30 consecutive days and accommodations are reserved in advance, when the hosting platform meets the statutory definition of a re-renter.
- Beginning July 1, 2025, qualifying hosting platforms are subject to Hotel Operators’ Occupation Tax.
- The source establishes tax and registration obligations, not statewide land-use permission; local zoning and licensing may separately apply.
rental period: < 30 consecutive days
“Beginning July 1, 2025, hosting platforms for short-term rentals that meet the definition of “re-renter” are subject to Hotel Operators’ Occupation Tax.”
FY 2025-28, Hotel Operators’ Occupation Tax Updates for Hosting Platforms for Short-Term Rentals ↗Re-checked Sep 9, 2026
Campground & park staysLimited
Operation of a campground providing temporary parking of recreational vehicles in Illinois; this is not a determination of long-term RV occupancy on an individual private parcel outside the statutory campground definition.
- IDPH annually inspects and licenses covered campgrounds.
- A covered campground includes an area where three or more tents, cabins, recreational vehicles, or other shelters are erected and maintained for camping, or where space is provided for camping or temporary RV parking for 10 or more persons for six or more camping days in a calendar year.
- Campgrounds within home-rule units of government are exempt from this State program.
- IDPH inspects water supply and sewage disposal systems, electrical systems, sanitation, food service, and recreational facilities.
- IDPH reviews construction plans for new campgrounds and major expansions or alterations.
- Local zoning and other local requirements may separately apply.
recreational vehicles or other shelters erected and maintained for camping: >= 3 shelters (One alternative branch of the statutory campground definition.) · persons using space for camping or temporary RV parking: >= 10 persons (Applies for six or more camping days during a calendar year.) · camping days: >= 6 days per calendar year (Applies to the 10-or-more-person branch of the statutory campground definition.)
“State law requires the IDPH to annually inspect and license campgrounds in Illinois. The Campground Licensing and Recreational Area Act defines campground as a recreational area where three or more tents, cabins, recreational vehicles or other permanent or non-permanent type shelters are erected and maintained for camping or where space is provided for camping, temporary parking of recreational vehicles or placing of such tents, cabins, recreational vehicles or other permanent or non-permanent type shelters of any kind for 10 or more persons for six or more camping days during a calendar year.”
Youth Camps and Campgrounds ↗Re-checked Nov 4, 2026
2 more reviewed findings on this topic
- Allowed (with conditions) — Overnight camping in Illinois campgrounds subject to the Campground Licensing and Recreational Area Act.
  ““Camping Day” means any 24 hour period or portion thereof during which the participants remain overnight at the site.”
  Youth Camps and Campgrounds ↗Re-checked Sep 9, 2026
- Limited — Temporary camping in covered Illinois campgrounds; this claim does not establish whether camping is allowed on a private parcel outside the statutory campground definition.
  “Campgrounds within home rule units of government are exempt. Staff inspects the water supply and sewage disposal systems, the electrical systems, general sanitation, food service and recreational facilities. IDPH also reviews construction plans for all new campgrounds and for major expansions or alterations of existing ones.”
  Youth Camps and Campgrounds ↗Re-checked Nov 4, 2026
county building authorityLimited
County building-construction and building-code regulation, including residential structures, in counties meeting the statutory population and metropolitan-area conditions.
- The county must have a population not in excess of 1,000,000.
- The county must be located in the area served by the Northeastern Illinois Metropolitan Area Planning Commission.
- Rules are subject to rules or regulations adopted by the State Fire Marshal under the cited gasoline and volatile-oils statute.
- The county must exempt municipalities located wholly or partly within the county when the municipal building code is equal to the county regulation and local authorities are enforcing that municipal code.
- The rules apply throughout the county, but municipalities may establish higher standards.
- The rules do not apply to construction or alteration of buildings or structures used or to be used for agricultural purposes on a tract zoned and used for agricultural purposes.
- The county board must follow the publication and posting requirements in 55 ILCS 5/5-1063.
- Beginning on the effective date of the amendatory Act of the 92nd General Assembly, a county adopting a new building code or amending an existing building code must provide the building-code identification to the Capital Development Board under Section 10.18 at least 30 days before adoption.
- Violations are petty offenses, and enforcement is by an officer designated by county-board resolution.
- The provision expressly authorizes county building-construction and building-code rules, but the opened text does not expressly use the phrase residential building permit requirement.
population threshold: <= 1000000 persons (The county must be located in the area served by the Northeastern Illinois Metropolitan Area Planning Commission.) · pre-adoption identification period: >= 30 days (Applies to a new building code or amendment under the stated amendatory-Act provision.)
“The county board in any county with a population not in excess of 1,000,000 located in the area served by the Northeastern Illinois Metropolitan Area Planning Commission may prescribe by resolution or ordinance reasonable rules and regulations (a) governing the construction and alteration of all buildings and structures and parts and appurtenances thereof and governing the maintenance thereof in a condition reasonably safe from the hazards of fire, explosion, collapse, contagion and the spread of infectious disease”
55 ILCS 5/5-1064 — Buildings in certain counties of less than 1,000,000 population ↗Re-checked Oct 1, 2026
One more reviewed finding on this topic
- General — Illinois counties adopting and enforcing building codes and issuing building permits for residential construction in unincorporated areas, subject to the statewide baseline framework.
  “A municipality or county is not required to adopt building codes. If they do NOT adopt a building code then they are considered a non-building code jurisdiction and section 10.09-1 of the Capital Development Board Act (20 ILCS 3105) applies. If they do adopt a building code(s) then it must comply with section 10.18 of the Capital Development Board Act (20 ILCS 3105).”
  Illinois Codes FAQ ↗Re-checked Sep 26, 2026

Inside cities and towns in Marion County

Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.

Zoning districtsPublished
Zoning districts in the City of Marion zoning jurisdiction.
- This claim is limited to the City of Marion and does not establish countywide zoning districts.
“For the purposes of this ordinance, the City of Marion is divided into the following districts:”
Zoning Ordinance, City of Marion, Illinois ↗Re-checked Oct 3, 2026
Accessory dwellingsProhibited
Use of an accessory structure as a dwelling within the City of Marion zoning jurisdiction.
- This claim is limited to the City of Marion and does not establish a countywide rule.
“Use As A Dwelling: Use of an accessory structure as a dwelling is prohibited in the City of Marion.”
Zoning Ordinance, City of Marion, Illinois ↗Re-checked Oct 3, 2026

Still unanswered

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

Subdividing land — Subdivision review and approval in unincorporated Marion County.

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 Marion County, Illinois

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

Marion County scores 74/100 on the Bolthole Index, a strong county profile. Its strengths: low administrative friction for a quiet rural property and workable self-sufficiency basics (44.7″/yr rainfall).

How much does land cost in Marion County, Illinois?

Land in Marion County runs about $6,108 per acre, based on the latest county data.

What is the water situation in Marion County?

Marion County gets about 44.7" of rain a year, with severe drought in roughly 1.7% of years.

How remote is Marion County?

A representative private-land location has about 13,943 people within a 30-minute drive and 2,681,102 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.

Building permits, zoning and land rules in Marion County, Illinois