Bolthole Index

De Witt County, Illinois

Building permits, zoning and land rules in De Witt County, Illinois

45Index Score / 100
#82 of 102 in Illinois

Unincorporated De Witt County, Illinois requires a permit before construction, reconstruction, erection or structural alteration begins, subject to listed exceptions.1 County zoning also applies, while municipalities with their own zoning ordinances control locally.2 Septic approval comes through the DeWitt-Piatt Bi-County Health Department and is a condition of the county building permit.3

At a glance

Building permit
Required for covered construction in unincorporated areas; listed exceptions apply1
Zoning
County zoning applies except inside municipalities with their own zoning ordinance2
Septic
Handled by the DeWitt-Piatt Bi-County Health Department3
Manufactured home
Limited to the designated mobile-home district or a state-approved licensed park4
Minimum lot size
Varies by zoning district and sewer service; soil capability can require more land5
Private well
A permit is required before a new well, modification or abandonment sealing6
Floodplain
County development permit required for covered floodplain development7

Who to call

Planning & zoning

De Witt County Planning and Zoning

Building permits, county zoning, floodplain management, plat review and subdivision review

(217) 935-7775

[email protected]

201 West Washington Street, Clinton, Illinois 61727

Online permits →

Septic permits

DeWitt-Piatt Bi-County Health Department

Private sewage disposal permits and inspections for De Witt County

217.935.3427

5924 Revere Road, Clinton, IL 61727

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 De Witt County, Illinois?

Yes. In unincorporated De Witt County, a required permit must be issued before a building or structure is erected, constructed, reconstructed or structurally altered.1 The ordinance lists exceptions, including certain exterior remodeling, work that does not change a structure's size, shape, dimensions or height, public-utility structures, and qualifying park structures.1

A single-family dwelling does not need the county occupancy permit that applies to other changes in use or occupancy.8 Agricultural buildings and accessory buildings on an operating farm still fall under the permit framework, but the county states that no permit fee is charged for qualifying agricultural work; health, zoning and other requirements may still apply.9 Illinois also has statewide baseline building-code requirements, even where a local government has not adopted its own building code.10

Who issues building permits in De Witt County, and how do you reach them?

De Witt County Planning and Zoning is the first stop for county building permits, zoning questions, floodplain management, plats and subdivision review.11 The office is at 201 West Washington Street in Clinton, can be reached at (217) 935-7775 or [email protected], and links applicants to an online Cloudpermit portal.11

For privately funded construction, Illinois does not issue the local building permit or conduct the local inspection; those questions belong to the government with jurisdiction over the parcel.1213 De Witt County's reviewed materials do not identify an adopted county building code or a general inspection schedule, so ask Planning and Zoning which code path, plan documents and inspections apply before pricing the project. A parcel inside a municipality with its own zoning ordinance may instead be under that municipality's rules.2

Does De Witt County have zoning?

Yes. De Witt County zoning covers county land and municipalities that do not have their own zoning ordinance; a municipality with its own ordinance controls zoning within its boundaries.142 Confirm both the parcel's jurisdiction and zoning district before relying on a rural mailing address.

District rules govern permitted uses, lot size, building height, yards and setbacks.11 County minimum lot areas vary by district, public-sewer status and stated exceptions, and the County Board may require a larger lot when soil capability warrants it.5 Building heights also vary by district, with some districts listing no maximum and special-use relief available from a stated maximum.15 The reviewed rules do not establish a countywide minimum dwelling floor area or a single setback for every parcel; Planning and Zoning should confirm the standards for the parcel's actual district.

How do septic permits work in De Witt County?

The DeWitt-Piatt Bi-County Health Department administers private sewage disposal in De Witt County, and its approval is a condition of the county building permit.3 Contact the DeWitt County office at 5924 Revere Road in Clinton or 217.935.3427.16

A septic permit application is required for a new installation or complete replacement, replacement of the tank, addition or removal of a major component, and qualifying absorption-field changes.17 The reviewed fee is $200 for a new installation or complete replacement and $75 for a repair affecting no more than 50% of the existing system.17 Only about 5.1% of county soils avoid a USDA rating of severe limitation for a conventional drain field, so budget for a site evaluation and the possibility of an alternative design.18 Illinois also requires plan approval before private-sewage construction begins.19

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

We could not confirm a specific De Witt County rule allowing long-term RV residence, temporary camping or tiny-home occupancy. Ask De Witt County Planning and Zoning about the parcel's district, the proposed use, required setbacks and permit path before buying or moving a unit onto the land.

Do not treat the manufactured-home rule as an answer for every tiny home or RV. Manufactured and mobile homes are limited to the R-4 Mobile Home Residential District or areas approved and licensed by the Illinois Department of Public Health as mobile-home parks, with well and septic requirements applying where municipal service is unavailable.4 Illinois regulates licensed campgrounds, but that statewide campground program does not establish permission to occupy an RV as a residence on a private parcel.20 Off-grid toilet options exist under state rules, but other domestic wastewater must still go to a conventional private sewage disposal system.21

Building a home in De Witt County: what are the steps?

  1. Confirm whether county or municipal zoning controls the parcel; municipalities with their own zoning ordinance control locally.2
  2. Ask De Witt County Planning and Zoning to confirm the zoning district, permitted residential use, lot standards, setbacks, code path and required application materials.11
  3. Send the water and sewage plans to the DeWitt-Piatt Bi-County Health Department because health approval is a condition of the county building permit.3
  4. Obtain a private-well permit from the state or an approved local health department before constructing, modifying or sealing a well.6
  5. Apply through the county's online building-permit portal and do not begin covered construction until the permit is issued.111
  6. If the site is in a floodplain, obtain the county development permit and any other required federal, state and local authorizations before work starts.7

What should you check before buying land in De Witt County?

Start with zoning jurisdiction and district, then verify that the intended home type and use are allowed.222 If a tract will be divided, county Planning and Zoning reviews maps, plats and subdivisions, and municipal review can also apply near a city or village with subdivision rules.23

Check soils before committing to a house site because only about 5.1% of county soils avoid a severe USDA limitation rating for conventional septic drain fields.18 Check the flood map and ask Planning and Zoning whether a county floodplain permit applies.7 Confirm legal road access with the authority that maintains the road; access to a state-maintained road requires an IDOT permit before right-of-way work begins.24 For carrying costs, the county's effective property-tax rate is about 1.8%, and the median property-tax bill is about $2,297 per year.2526

Watch-outs

  • A rural address does not prove county jurisdiction; municipalities with their own zoning ordinance apply their own zoning rules.2
  • Health Department approval of water and sewage plans is a condition of the De Witt County building permit.3
  • Covered floodplain development needs a county development permit before work begins, along with other required authorizations.7
  • Long-term RV living and tiny-home occupancy remain unconfirmed; ask De Witt County Planning and Zoning about the exact parcel and proposed use.11

Sources

  1. § 155.126 Permits Required, quoted and re-checked
  2. § 155.007 Jurisdiction; Compliance, quoted and re-checked
  3. Permitting and Inspection FAQs, quoted and re-checked
  4. § 155.095 Mobile Home Rules and Regulations, quoted and re-checked
  5. § 155.065 District Lot Regulations, quoted and re-checked
  6. 77 Ill. Admin. Code 920.130, Water Well Permit Requirements (Illinois statewide rule), quoted and re-checked
  7. § 152.04 Development Permit, quoted and re-checked
  8. § 155.126 Permits Required, quoted and re-checked
  9. § 155.126 Permits Required, quoted and re-checked
  10. Illinois Codes (Illinois statewide rule), quoted and re-checked
  11. De Witt County Planning and Zoning (dewittcountyil.gov)
  12. Illinois Codes FAQ (Illinois statewide rule), quoted and re-checked
  13. Illinois Codes FAQ (Illinois statewide rule), quoted and re-checked
  14. Planning and Zoning, quoted and re-checked
  15. § 155.065 District Lot Regulations, quoted and re-checked
  16. DeWitt-Piatt Bi-County Health Department (dewittpiatthealth.com)
  17. Permitting and Inspection FAQs, quoted and re-checked
  18. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  19. 77 Ill. Adm. Code 905.190 Installation Approval (Illinois statewide rule), quoted and re-checked
  20. Youth Camps and Campgrounds (Illinois statewide rule), quoted and re-checked
  21. 77 Ill. Adm. Code 905.130 Human Waste Disposal (Illinois statewide rule), quoted and re-checked
  22. § 155.025 Zoning Districts Established, quoted and re-checked
  23. § 151.01 Approval of Maps, Plats and Subdivisions, quoted and re-checked
  24. Highway Permits (Illinois statewide rule), quoted and re-checked
  25. Effective property tax rate: Bolthole Index county data
  26. Median property tax bill: 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

De Witt County in Illinois

45
County map
De Witt County highlighted among the Illinois counties · colored by Index score

How De Witt County scores

Seclusion41100% ev.
Self-Sufficiency27100% ev.
Admin Boringness4390% ev.
Durability63100% ev.
Property Autonomy42100% ev.
Carry Cost52100% 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 →

$162kTypical home
1.8%Property tax
$11,261Land / acre
38.9"Annual rain
5.4% of yrsSevere drought
7.7 / yr (+7.2)Mid-century 100°F days
14.5 daysMid-century dry spell
2.02" (+15.5%)Mid-century 1-day rain
1.78×Wildfire change factor
100%Forward climate coverage
$1,524Home insurance / yr
3.8% / yrInsurance growth
0.72%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
27,364People within 30 min
2,093,678People within 2 hr
27,043Radius comparison (15 mi)
38.6People / sq mi
0%Federal land
97%Land at 15% slope or less
5.1%Septic soil without severe limits
12,690 acWorkable land screen
8.1%Wooded land
30.9 tonsBiomass / forest ac
52°FAvg temp

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Answers from the rulebook for De Witt County

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

De Witt County rules

  • Building permitRequired

    Construction, reconstruction, erection, or structural alteration subject to county zoning in unincorporated De Witt County.

    • No permit is required for listed exceptions including certain exterior remodeling, work that does not alter size, shape, dimension, or height, public utility structures, and qualifying park structures.
    • The county planning page states that since 1978 building permits are conditioned on Health Department approval of plans and water handling provisions.
    “Hereafter, no building or structure shall be erected, constructed, reconstructed or structurally altered, nor shall work begin upon same until the required permit has been issued by the Administrator; except that, no permit shall be required for the following:”
  • Certificate of occupancyLimited

    County occupancy permits for changes in occupancy or use other than single-family dwellings.

    • No occupancy permit is required for single-family dwellings.
    • No occupancy permit is required for agricultural purposes, storm sewers, farm tiles, sanitary sewers, pipelines, poles, towers, wires, cables, conduits, vaults, laterals, or similar public-utility equipment.

    occupancy permit fee: 25 USD (For changes in land use other than agricultural, one-/two-family residence, public utility, or government purposes.)

    “Hereafter, no change in the occupancy of land, or any change of use or occupancy in a new or existing building other than for single-family dwelling shall be made until an occupancy permit has been issued by the Administrator.”
  • County-wide zoningPresent

    County zoning regulations adopted by the DeWitt County Board; the code applies countywide and also reaches municipalities without their own zoning ordinance.

    • The county code's jurisdiction excludes municipalities that have their own zoning ordinance.

    adoption date: 1972-08-08

    “The jurisdiction of this chapter shall include all lands and waters within the county and within those municipalities not having in force their own zoning ordinance.”
  • Local zoningVaries (with conditions)

    County aggregate of local zoning: DeWitt County zoning applies where a municipality does not have its own zoning ordinance; municipalities with their own zoning ordinance may control locally.

    • Municipal zoning ordinances may supersede county zoning within those municipalities.
    “The jurisdiction of this chapter shall include all lands and waters within the county and within those municipalities not having in force their own zoning ordinance.”
  • Zoning districtsPublished (with conditions)

    County zoning districts and district classifications.

    • The county code lists districts A, B-1, B-2, B-3, FP, I, R-1, R-2, R-3, R-4, RD-1, RD-2, and RD-3.
    • The county chapter applies within municipalities that do not have their own zoning ordinance.
    “In order to carry out the purposes of this chapter, the geographic area within the jurisdiction of this chapter is hereby divided into the following use districts:”
  • Minimum lot sizeSpecified

    County zoning districts A, RD-1, RD-2, RD-3, R-1, R-2, R-3, R-4, B-1, B-2, B-3, I, and FP.

    • If not served by public sewer, the table's applicable specifications apply and the County Board may require larger lots when soil capabilities warrant.
    • FP has no listed minimum lot area.
    • District-specific exceptions and footnotes apply.

    minimum lot area: 7,350-87,120 square feet (District-specific; FP and B-1 list none.)

    “A | 87,120 | None | 240 | 240 | 50 | 35 | 15”
  • Building heightSpecified

    Maximum building heights by county zoning district.

    • The table lists district-specific height limits, including 35 feet in several districts and 60 feet in RD-1, R-3, B-1, and B-2.
    • Agricultural, industrial, and floodplain districts list no maximum in the table.
    • Exceptions from maximum height may be granted by special-use permit.

    maximum building height: 35-60 feet (District-specific; some districts list none; special-use exceptions may be granted.)

    “Exceptions from building height maximums may be granted as a special use permit.”
  • Manufactured homesLimited

    Manufactured and mobile homes.

    • Placement is limited to the R-4 Mobile Home Residential District or IDPH-approved and licensed mobile-home parks.
    • R-4 lots must meet county minimum lot requirements.
    • Mobile-home-park lot sizes are regulated by IDPH.
    • Homes must comply with the Mobile Home Owners Tiedown Act and skirting requirements.
    • If not connected to municipal water or sewer, applicable Health Department well and septic rules apply.
    “Manufactured and mobile homes may be placed only in the R-4 Mobile Home Residential District or in areas approved and licensed as mobile home parks by the State Department of Public Health (IDPH).”
  • Who permits septicLocal (with conditions)

    Private sewage disposal in De Witt County administered by the DeWitt-Piatt Bi-County Health Department.

    • The county planning page states that Health Department approval is a condition of building-permit issuance.
    • Additional approval may be required from IDPH or Illinois EPA for particular systems.
    “A permit application is required when the septic tank is replaced or where a major component of the system is removed or added.”
  • Septic permitLimited

    Septic tank replacement, major-component additions or removals, and absorption-field changes in De Witt County.

    • A permit application is required for septic-tank replacement or removal/addition of a major component.
    • A permit application is also required when the absorption field is increased by 25% or more, or when 25% or more is removed and replaced with new piping and backfill.
    • The department states fees of $200 for complete replacement or new installation and $75 for a repair of 50% or less.

    absorption-field increase threshold: >= 25 percent · absorption-field removal/replacement threshold: >= 25 percent · complete replacement or new installation fee: 200 USD · repair fee: 75 USD (Repair of less than or equal to 50% of existing system.)

    “A permit application is also required to be submitted to our agency when the size of the absorption field is increased by 25% or more or where 25% or more of the existing absorption field is removed and replaced with new piping and backfill material.”
  • Agricultural exemptionConditional

    Agricultural uses and agricultural buildings under county zoning permit and occupancy provisions.

    • No occupancy permit is required for land used or to be used for agricultural purposes.
    • By state law, no fees are charged for permits for buildings intended for agricultural purposes or accessory buildings located on an operating farm.
    • Other zoning, health, and applicable regulatory requirements may still apply.
    “By state law, no fees are charged for permits for buildings intended to be used for agricultural purposes or for accessory buildings located on an operating farm.”
  • Subdividing landRegulated (with conditions)

    Maps, plats, and subdivisions subject to county review.

    • All applicable federal, state, and local rules must be satisfied.
    • County Planning and Zoning reviews and approves maps, plats, and subdivisions.
    • For land within one and one-half miles of a village or city with subdivision rules, the village-president or city-mayor signature is also required before recording.

    municipal review radius: 1.5 miles (Applies where the involved village or city has subdivision rules.)

    “All maps, plats and subdivisions shall be reviewed and approved by the Administrator of the County Department of Planning and Zoning.”
  • Building in a floodplainRequired

    Development in the De Witt County floodplain.

    • Development by a person, firm, corporation, or governmental body exempted by law is outside the stated requirement.
    • The application must include scaled site drawings, grade elevations, building locations, lowest-floor elevation where applicable, and project cost.
    • The County Zoning Administrator must obtain all other required federal, state, and local permits; no county permit issues until those permits are obtained.
    • Land demonstrably above base flood elevation under the stated map conditions is not subject to the chapter.
    “No person, firm, corporation or governmental body not exempted by law shall commence any development in the floodplain without first obtaining a development permit from the County Zoning Administrator.”

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©.”
    One more reviewed finding on this topic
    • 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.”
  • 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.”
    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.”
  • SetbacksDistrict specific (with conditions)

    County zoning regulations for building or setback lines outside municipalities with municipal zoning ordinances.

    • The actual setback distances are established by applicable county zoning districts or other local ordinances.
    • Agricultural buildings may be required to conform to building or setback lines.
    “to establish building or setback lines”
  • Septic inspectionLimited

    New and replacement surface-discharging private sewage disposal systems covered by Illinois EPA general NPDES Permit ILG62.

    • Coverage under the general permit is limited to eligible dischargers.
    • Systems not eligible for general-permit coverage may require an individual NPDES permit.
    • Periodic inspection, monitoring, and reporting are required under the permit.
    “The permit sets discharge limits and requires periodic inspection, monitoring and reporting.”
  • 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.”
  • Well permitRequired

    Construction of a new water well, modification of an existing water well, or sealing of an abandoned water well in Illinois.

    • A permit must be obtained from the Illinois Department of Public Health or an approved local health department before work begins.
    • The application must use Department or approved local health department forms and include a plan and drawing of the proposed construction.
    • The plan must include the lot size, slope, property lines, distances to septic tanks, abandoned wells, property lines, seepage fields, sewers, and other contamination sources; driller license number and name; estimated daily pumping capacity if greater than 100,000 gallons per day; well location; owner name and address; well type; estimated depth; well-use type; and proposed aquifer.
    • The permit is void if construction has not commenced within one year after issuance.
    • The permit fee for constructing, deepening, modifying, or sealing a water well may not exceed $100.
    • The Department will deny a permit request when available information indicates groundwater contamination exceeds Class I groundwater standards, subject to the treatment approval provision in subsection (f)(2).
    • The permittee must notify the Department, approved local health department, or approved unit of local government by telephone or in writing at least two days before work begins.

    maximum water well permit fee: <= 100 USD · permit commencement deadline: 1 year after issuance (Permit is void if construction has not commenced within that period.) · pre-work notification: >= 2 days (Notification may be by telephone or in writing.)

    “A permit to construct a new water well, modify an existing water well or seal an abandoned water well shall be obtained from the Department or approved local health department prior to start of work.”
  • 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.”
  • 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.”
  • Permit feesVariable (with conditions)

    Applications and written inquiries for Illinois Department of Natural Resources public-water, dam, and floodway work requiring authorization.

    • The Department reviews applications and written inquiries free of charge to determine whether authorization is required when sufficient information is provided.
    • A permit application fee may apply under the Department's permit fee schedule.
    “January 15, 2014, a new Permit Application Fee went into effect. All applications and written inquiries received will be reviewed free of charge to determine whether the Public Water, dam and/or floodway work proposed requires authorization by the Department, so long as sufficient information is provided for the Department to make that determination.”
  • Permit processPublished (with conditions)

    Construction projects in Illinois waterways, floodplains, and wetlands seeking State and Federal authorizations through the joint permit application process.

    • The joint application seeks authorizations from the U.S. Army Corps of Engineers, Illinois Department of Natural Resources, Office of Water Resources, and Illinois Environmental Protection Agency.
    • The joint application form replaced the former Protecting Illinois Waters application package.
    “Construction projects in Illinois' waterways, floodplains and wetlands often require both State and Federal authorization. This joint application is designed to simplify the approval process for the applicant seeking project authorizations from the U. S. Army Corps of Engineers, the Illinois Department of Natural Resources, the Office of Water Resources and the Illinois Environmental Protection Agency.”
  • Campground & park staysAllowed (with conditions)

    Overnight camping in Illinois campgrounds subject to the Campground Licensing and Recreational Area Act.

    • IDPH annually inspects and licenses campgrounds in Illinois.
    • The state campground definition includes camping and temporary parking of recreational vehicles.
    • Campgrounds within home rule units of government are exempt from the state campground licensing requirement.
    • Recreational areas without overnight camping, such as highway rest stops and picnicking areas, are subject to the rules but are not licensed or routinely inspected.

    minimum persons for statutory campground threshold: >= 10 persons · minimum camping duration for statutory campground threshold: >= 6 camping days per calendar year

    ““Camping Day” means any 24 hour period or portion thereof during which the participants remain overnight at the site.”
  • county building authorityGeneral

    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 a building code.
    • A county that does not adopt a building code is treated as a non-building-code jurisdiction, and section 10.09-1 of the Capital Development Board Act applies.
    • A county that adopts a building code must comply with section 10.18 of the Capital Development Board Act.
    • Locally adopted codes must regulate residential structural design at least as stringently as the baseline International Residential Code.
    • For privately funded projects, the local code official is the authority having jurisdiction; the State does not issue private-project building permits, perform plan reviews, or perform inspections.
    “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).”

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 exemption from county building or zoning permits.
  • Minimum dwelling size — Minimum dwelling size.
  • Lot coverage — Lot coverage.
  • Living in an RV — Long-term or residential RV occupancy.
  • Camping on your land — Temporary camping.
2 more unanswered
  • Tiny homes
  • Accessory dwellings

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 De Witt County, Illinois

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

De Witt County scores 45/100 on the Bolthole Index, a marginal county profile. Its strengths: mixed durability signals. Watch-outs: workable self-sufficiency basics (38.9″/yr rainfall) and about 27,364 people within a 30-minute drive.

Do you need a building permit in De Witt County, Illinois?

De Witt County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by DeWitt-Piatt Bi-County Health Department. 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 De Witt County, Illinois?

Land in De Witt County runs about $11,261 per acre, based on the latest county data.

What is the water situation in De Witt County?

De Witt County gets about 38.9" of rain a year, with severe drought in roughly 5.4% of years.

How remote is De Witt County?

A representative private-land location has about 27,364 people within a 30-minute drive and 2,093,678 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 De Witt County means bringing your own water and power. The kit we’d start with:

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How De Witt compares in Illinois

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