Bolthole Index

Henderson County, Illinois

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

73Index Score / 100
#16 of 102 in Illinois

We could not confirm whether a home in unincorporated Henderson County, Illinois needs a county building permit; ask Henderson County EMA/Zoning.12 Countywide zoning remains unconfirmed, but the Village of Stronghurst zoning code covers the village and an area beyond its limits.34 Septic permits and private-well permits go through the Henderson County Health Department, which reviews septic plans, evaluates sites and inspects systems.56

At a glance

Building permit
Unconfirmed for unincorporated Henderson County; ask the county EMA/Zoning office before building12
Zoning
Countywide zoning unconfirmed; Village of Stronghurst zoning covers the village and its surrounding area, not the whole township34
Septic permits
Required for new or renovated systems; the Health Department reviews plans, evaluates sites and inspects the work57
Private well permit
Required before a new well is built; the county Health Department offers the local permit86
RV living
Unconfirmed on private rural land; ask EMA/Zoning and the Health Department before relying on an RV as a dwelling326
Tiny home
No county-specific occupancy rule was confirmed; ask EMA/Zoning about use, setbacks and placement32
Owner-builder exemption
Qualifying owner-occupants may do plumbing on their own single-family home, but this does not waive local permits or other trade rules91011
Septic soil suitability
USDA rates 35.8% of county soils “not limited” for conventional drain fields; a parcel still needs site evaluation12

Who to call

Zoning

Henderson County EMA/Zoning

County EMA and zoning inquiries; use this office to confirm parcel-specific zoning and who handles any local building approval

309-867-2780

Septic permits

Henderson County Health Department

Private sewage-disposal plan review, site evaluation and inspection; Henderson County water-well permits and water-supply testing

+1 309-627-2812

208 West Elm· PO Box 220 · Gladstone, IL 61437

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Off-grid gear

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

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Do you need a building permit in Henderson County, Illinois?

Whether a house on unincorporated land in Henderson County, Illinois needs a county building permit remains unconfirmed1. Illinois does not issue building permits, conduct building inspections or issue occupancy certificates for privately funded construction; if those approvals are required, the applicable local government administers them131415. That statewide division of responsibility does not answer the county question, and the state's code directory lists Henderson County with a 2015 International Building Code adoption with local amendments, a jurisdiction-reported record that may be outdated and does not by itself confirm a county building-permit requirement.16 Before buying materials or hiring excavation, call Henderson County EMA/Zoning at 309-867-2780 and ask whether the parcel needs a building permit, zoning clearance, inspection or occupancy approval2. A qualifying owner-occupant may perform plumbing on the owner's single-family residence, but that narrow exemption does not waive local plumbing permits or create a general exemption for other construction work91011.

Who issues building permits and zoning approval in Henderson County?

For building-permit questions on unincorporated Henderson County land, start with Henderson County EMA/Zoning at 309-867-2780; we could not confirm a county building-permit requirement or application process.21 Ask whether the parcel needs a building permit, which construction standards apply, and whether building inspections or an occupancy certificate are required. For septic and private-well permits, contact the Henderson County Health Department at +1 309-627-2812, 208 West Elm· PO Box 220 · Gladstone, IL 61437.6 The Health Department reviews septic plans, evaluates sites and inspects new or renovated systems throughout Henderson County.177

Does Henderson County, Illinois have zoning?

We could not confirm a current countywide zoning ordinance or district map for unincorporated Henderson County; ask Henderson County EMA/Zoning at 309-867-2780 about the parcel and proposed use.32 In Stronghurst Township, the Village of Stronghurst zoning code applies within the incorporated village and within one and one-half miles of its corporate limits, including portions of the township; that code does not establish township-wide zoning.4 Agricultural land and buildings in that code’s coverage area are exempt from its title restrictions but must conform to building or setback lines, and a building permit may be required.4 Septic plan review, site evaluation and inspections remain with the Henderson County Health Department.18 Ask EMA/Zoning about setbacks, minimum lot or dwelling size, accessory dwellings and subdivision approval for land outside the village code’s coverage area.2

How do septic and well permits work in Henderson County, and who issues them?

Henderson County requires a private sewage-disposal permit for a new or renovated system5. The Henderson County Health Department reviews the application and plan, evaluates the site and inspects new or renovated systems197. Illinois requires plan approval from the state or applicable local authority before construction of a new private sewage system begins, including specified major alterations to an existing system20. USDA rates 35.8% of Henderson County soils “not limited” for a conventional drain field; that countywide rating does not establish parcel suitability, so arrange the site evaluation before fixing the house location or purchase budget12. The same Health Department advertises Henderson County water-well permits and water-supply testing6. Illinois requires a permit before constructing a new well, modifying a well or sealing an abandoned well8.

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

Long-term RV occupancy and tiny-home occupancy on private land in unincorporated Henderson County are unconfirmed3. Illinois campground rules address regulated campgrounds, not whether one household may occupy an RV on its own rural parcel, so campground licensing should not be read as permission21. Call Henderson County EMA/Zoning at 309-867-2780 and describe whether the unit has wheels, a foundation, utility connections and year-round occupancy2. Then ask the Henderson County Health Department how wastewater must be handled6. A manufactured home is a different category: statewide installation requirements apply, while local zoning, building, floodplain and utility requirements may still control placement22. Illinois recognizes certain off-grid toilet systems, but other domestic wastewater still requires an approved disposal system23.

Building a home in Henderson County: steps in order

  1. Call Henderson County EMA/Zoning at 309-867-2780 with the parcel number and project description; ask about building approval, zoning, setbacks, inspections and occupancy paperwork213.
  1. Contact the Henderson County Health Department for the required septic permit, plan review and site evaluation, and ask about any private-well permit51924.
  1. Use the septic site evaluation to plan the home, well and driveway locations; USDA rates 35.8% of county soils “not limited” for conventional drain fields, but the rating does not decide parcel suitability12.
  1. Have the Health Department inspect the new or renovated septic system7.
  1. If access enters an Illinois state-maintained highway, obtain the required IDOT right-of-way permit before work begins25.
  1. If development affects a regulated floodway or an undelineated floodplain, confirm state authorization before construction2627.

What should you check before buying land in Henderson County?

Start with jurisdiction: ask Henderson County EMA/Zoning whether the parcel is subject to county or municipal rules and whether the intended home, RV, tiny home or accessory structure is allowed23. Test septic feasibility early: USDA rates 35.8% of county soils “not limited” for a conventional drain field, but a site evaluation is still needed12. Check the survey, legal access, driveway authority, flood maps and water source before closing; an entrance on a state-maintained highway requires IDOT approval25. Henderson County is sparsely settled at 16.1 people per square mile, and the nearest city of 100,000 or more is about 52 miles in a straight line from the county center2829. Farmland averages about $8,869 per acre, while the effective property-tax rate is about 1.7% and the median annual property-tax bill is about $1,703303132.

Watch-outs

  • The Village of Stronghurst zoning code extends beyond its corporate limits; agricultural land and buildings in that coverage area still must meet building or setback lines, and a building permit may be required.4
  • We could not confirm county building-permit fees, RV occupancy, tiny-home occupancy or countywide zoning standards; ask Henderson County EMA/Zoning at 309-867-2780 before buying or building.132
  • USDA rates 35.8% of Henderson County soils “not limited” for conventional drain fields; that rating does not replace the Health Department’s site evaluation or mean septic is impossible elsewhere.1219

Sources

  1. Illinois Codes FAQ (2026 county census)
  2. Henderson County EMA/Zoning (henderson.illinoisassessors.com)
  3. (2026 county census)
  4. Stronghurst Township: 10-1-2: Application of Provisions (Henderson County), quoted and re-checked
  5. Environmental Health, quoted and re-checked
  6. Henderson County Health Department (hendcohealth.com)
  7. Environmental Health, quoted and re-checked
  8. 77 Ill. Admin. Code 920.130, Water Well Permit Requirements (Illinois statewide rule), quoted and re-checked
  9. HB5913 Enrolled — Illinois Plumbing License Law amendment (2026 county census)
  10. HB5913 Enrolled — Illinois Plumbing License Law amendment (Illinois statewide rule), quoted and re-checked
  11. 225 ILCS 320/18 — Local regulation; Department standards (Illinois statewide rule), quoted and re-checked
  12. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  13. Illinois Codes FAQ (Illinois statewide rule), quoted and re-checked
  14. Illinois Codes FAQ (Illinois statewide rule), quoted and re-checked
  15. Illinois Codes FAQ (Illinois statewide rule), quoted and re-checked
  16. Illinois Municipal Code Directory, quoted and re-checked
  17. Private Sewage Disposal, quoted and re-checked
  18. Stronghurst Township: Private Sewage Disposal (Henderson County), quoted and re-checked
  19. hendcohealth.com, quoted and re-checked
  20. 77 Ill. Adm. Code 905.190 Installation Approval (Illinois statewide rule), quoted and re-checked
  21. Youth Camps and Campgrounds (Illinois statewide rule), quoted and re-checked
  22. Manufactured & Modular Homes/Mobile Structures (Illinois statewide rule), quoted and re-checked
  23. 77 Ill. Adm. Code 905.130 Human Waste Disposal (Illinois statewide rule), quoted and re-checked
  24. Private Water & Closed Loop Wells, quoted and re-checked
  25. Highway Permits (Illinois statewide rule), quoted and re-checked
  26. Permit Program, quoted and re-checked
  27. Permit Program (Illinois statewide rule), quoted and re-checked
  28. Population density: Bolthole Index county data
  29. Straight-line distance from the county center to the nearest city of 100,000+ people: Bolthole Index county data
  30. Farmland value per acre (USDA census): Bolthole Index county data
  31. Effective property tax rate: Bolthole Index county data
  32. Median property tax bill: Bolthole Index county data

Written October 12, 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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Compared with neighboring counties

Unlike 4 of its 6 neighbors, Henderson County requires a building permit only in limited cases.

RuleHenderson CountyWarren CountyMercer CountyMcDonough CountyHancock CountyKnox CountyFulton County
Building permitLimitedRequiredRequiredLimitedNot requiredRequiredLimited
County zoningNot publishedYesYesNot publishedNoYesYes
Septic permitsCounty Health Dept.County Health Dept.County Health Dept.County Health Dept.County Health Dept.County Health Dept.County Health Dept.

County locator

Henderson County in Illinois

73
County map
Henderson County highlighted among the Illinois counties · colored by Index score

How Henderson County scores

Seclusion63100% ev.
Self-Sufficiency64100% ev.
Admin Boringness7468% ev.
Durability59100% ev.
Property Autonomy42100% ev.
Carry Cost59100% ev.

Evidence strength: 95%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$127kTypical home
1.7%Property tax
$8,869Land / acre
37.9"Annual rain
4.5% of yrsSevere drought
6.7 / yr (+6)Mid-century 100°F days
15.7 daysMid-century dry spell
1.84" (+7.6%)Mid-century 1-day rain
1.75×Wildfire change factor
100%Forward climate coverage
$1,473Home insurance / yr
3.7% / yrInsurance growth
0.12%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
13,614People within 30 min
1,378,856People within 2 hr
42,613Radius comparison (15 mi)
16.1People / sq mi
2.3%Federal land
92.2%Land at 15% slope or less
35.8%Soils rated "not limited" for septic (strict USDA rating)
81,668 acWorkable land screen
17.9%Wooded land
51.1 tonsBiomass / forest ac
51.3°FAvg temp

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Cities and towns in Henderson 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 researched: Bald Bluff Township · Biggsville Township · Village of Biggsville · Carman Township · Gladstone Township · Village of Gladstone · Lomax Township · Village of Lomax · Media Township · Village of Media · Oquawka Township · Village of Oquawka · Raritan Township · Village of Raritan · Rozetta Township · Village of Stronghurst · Terre Haute Township

Answers from the rulebook for Henderson County

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

Henderson County rules

  • Building code adoptedAdopted

    Henderson County building-code adoption as reported in the Illinois Capital Development Board code directory.

    • The directory lists a 2015 International Building Code adoption with local amendments.
    • The directory is a jurisdiction-reported record; the Illinois Capital Development Board cautions that information may be outdated or incorrect if the jurisdiction has not reported updates.
    • Illinois states that statewide building-code requirements became effective January 1, 2025, so current project-specific applicability should be confirmed with the county code official.

    code year: 2015 year · code type: International Building Code · local amendments: true

    “Henderson County 2015 Building Code International Building Code Yes Colby Hathaway State's Attorney (309) 867-4871 hendsaofc@9thjudicial.org”
  • Who permits septicMixed (with conditions)

    Private sewage disposal in Henderson County.

    • IDPH regulates private sewage disposal statewide.
    • The Henderson County Health Department performs local plan review, site evaluation, and inspection.
    “Performs a plan review of the Private Sewage Disposal Plan Application”
  • Septic permitRequired

    Private sewage disposal permits for new or renovated systems in Henderson County.

    • The local health department performs plan review and site evaluation.
    • IDPH regulates private sewage disposal systems statewide.
    “Private Sewage Disposal Permits: Performs a plan review of the Private Sewage Disposal Plan Application, a site evaluation and inspection of new or renovated systems.”
  • Septic inspectionRequired

    New or renovated private sewage disposal systems in Henderson County.

    • The Henderson County Health Department performs inspections of new or renovated systems.
    • Rural-property real-estate evaluations are described as upon request.
    “Private Sewage Disposal Permits: Performs a plan review of the Private Sewage Disposal Plan Application, a site evaluation and inspection of new or renovated systems. Inspects wastewater haulers and portable sanitation businesses within Henderson County. Real Estate evaluations: Inspects private sewage disposal systems at rural properties upon request.”
  • Permit processPartial

    Private sewage disposal permit process in Henderson County.

    • The available official health-department page describes plan review, site evaluation, and inspection for new or renovated systems; building-permit process was not established.
    “Private Sewage Disposal Permits: Performs a plan review of the Private Sewage Disposal Plan Application, a site evaluation and inspection of new or renovated systems.”

Illinois rules that apply here

  • Building permitLimited

    Privately funded construction in Illinois; the State does not itself issue building permits, while any required permit is addressed by the applicable local government.

    • Permit requirements may be imposed and administered by the municipality, village, city, or county having jurisdiction.
    • The Illinois Capital Development Board states that statewide building codes became effective 1/1/2025, while local code officials remain the best source for project-specific answers.

    statewide building-code effective date: 2025-01-01

    “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 — Issuance of building permits 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.”
  • Owner-builder exemptionConditional

    Owner occupants or lessee occupants of single-family residences, and owners of single-family residences under construction for their own occupancy, performing plumbing planning, installation, alteration, or repair in Illinois.

    • The exemption is limited to plumbing work on the specified single-family residence; the cited statute does not establish a general owner-builder exemption for all construction trades or a statewide exemption from building permits.
    • The plumbing must comply with the minimum standards in the Illinois State Plumbing Code.
    • The plumbing is subject to inspection by the Illinois Department of Public Health or by the local governmental unit if it retains a licensed plumber as inspector.
    • The owner, owner occupant, or lessee occupant may not employ anyone other than a plumber licensed under the Illinois Plumbing License Law to assist.
    • An occupant must have taken possession of and be living in the premises as their bona fide sole and exclusive residence, or, for a residence under construction, expect to take possession and live there as that residence, with current intent to live there for at least 6 months after completion of the plumbing work or, for a residence under construction, at least 6 months after completion of construction.
    • Failure to possess and live in the premises as a sole and exclusive residence for 6 months or more creates a rebuttable presumption that the required intent was lacking.

    minimum occupancy period: >= 6 months (After completion of plumbing work; for a residence under construction, after completion of construction.)

    “Nothing herein contained shall prohibit the owner occupant or lessee occupant of a single family residence, or the owner of a single family residence under construction for his or her occupancy, from planning, installing, altering or repairing the plumbing system of such residence”
    2 more reviewed findings on this topic
    • Conditional — Privately funded construction in Illinois, including projects performed by an owner-builder, as to state-issued building permits, state plan review, state building-code inspections, and state occupancy permits.
      “No. If any of these are required, they would be addressed by the unit of local government.”
    • Conditional — Statewide treatment of local plumbing permits and inspections for qualifying owner occupants performing plumbing work on a single-family residence.
      “Nothing contained in this Act shall prohibit any city, town, village, township or county from providing for a Plumbing Inspector or from requiring permits for the installation and repair of plumbing and collecting a fee therefor, but a city, town, village, township, or county that requires a permit for installation and repair of plumbing may not issue that permit without verification that the applicant has a valid plumbing license or that the applicant is the owner occupant of a single family residence that is the subject of the permit.”
  • 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.”
  • 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.”
    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.”
  • 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”
  • Building heightDistrict specific (with conditions)

    County zoning districts outside municipalities with municipal zoning ordinances.

    • The applicable county zoning ordinance determines the actual height limit by district or use.
    • No single statewide height measurement was identified.
    “including height of buildings and structures”
  • Manufactured homesAllowed (with conditions)

    Occupancy of manufactured homes as dwellings, including occupancy in manufactured home communities regulated by IDPH.

    • Manufactured home communities with 5 or more sites must be licensed by IDPH, except communities located in home rule units.
    • IDPH annually inspects licensed communities for renewal, including water, sewage disposal, electrical systems, lighting, roads, spacing of homes, and garbage disposal.
    • Manufactured homes moved since January 1, 1980 must be secured using equipment meeting IDPH standards.
    • Effective December 31, 2001, manufactured homes must be installed by an Illinois licensed manufactured home installer or the homeowner and installed according to manufacturer instructions; if unavailable, the IDPH Manufactured Home Installation Code applies.
    • Local zoning, building, floodplain, and utility requirements may also apply.

    manufactured home community license threshold: >= 5 sites (Communities located in home rule units are excepted from this IDPH licensing statement.) · moved-home tiedown requirement effective date: >= 1980-01-01 · installation requirement effective date: >= 2001-12-31

    “designed and situated so as to permit its occupancy as a dwelling place for one or more persons”
  • 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.”
    One more reviewed finding on this topic
    • Required — New private well construction in Henderson County under Illinois statewide requirements.
      “To ensure the safety of these water supplies, the IDPH and local health departments review water well installation plans, issue permits for new well construction”
  • 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.”
  • 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.”
    One more reviewed finding on this topic
    • Required — Construction activities in regulated floodways affecting Henderson County.
      “All construction activities in the floodways of streams [...] in rural areas where the stream drainage area is ten square miles or more must be permitted”
  • 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.”
  • 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 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”
    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).”

Still unanswered

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

  • County-wide zoning — Countywide zoning ordinance in Henderson County, including unincorporated areas.
  • Local zoning — Municipal and township zoning within Henderson County; county aggregate not established.
  • Zoning districts — Published county zoning districts in Henderson County.
  • Minimum dwelling size — Minimum dwelling size requirements in Henderson County, including unincorporated areas.
  • Minimum lot size — Minimum lot size requirements in Henderson County, including unincorporated areas.
8 more unanswered
  • Lot coverage
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land

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 Henderson County, Illinois

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

Henderson County scores 73/100 on the Bolthole Index, a strong county profile. Its strengths: low administrative friction for a quiet rural property and workable self-sufficiency basics (37.9″/yr rainfall).

Do you need a building permit in Henderson County, Illinois?

Henderson County requires a building permit only in limited cases (such as floodplains or specific zones). Onsite septic is permitted by Henderson County Health Department (Environmental Health). Owner-builders may act as their own contractor to build their home. 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 Henderson County, Illinois?

Land in Henderson County runs about $8,869 per acre, based on the latest county data.

What is the water situation in Henderson County?

Henderson County gets about 37.9" of rain a year, with severe drought in roughly 4.5% of years.

How remote is Henderson County?

A representative private-land location has about 13,614 people within a 30-minute drive and 1,378,856 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.

How Henderson compares in Illinois

Compare side-by-side →See all 102 Illinois counties ranked →