Bolthole Index

Adams County, Illinois

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

73Index Score / 100
#17 of 102 in Illinois

Adams County, Illinois has no confirmed general residential building-permit rule for unincorporated land, although the county requires a building permit and siting approval for commercial solar facilities123. A city or other local government may control residential building permits and zoning, while the Adams County Health Department administers county septic permits and Illinois requires a well permit from the state or an approved local health department before work begins4567.

At a glance

Building permit
County rule unconfirmed; Illinois does not issue permits for private construction14
Zoning
County siting rules cover commercial solar; comprehensive residential zoning is unconfirmed83
Septic authority
Adams County Health Department administers county permits under state regulation56
Private well permit
Required before construction, deepening, modification, or sealing7
Soils fit for a standard septic drain field
19% of the county's soils rate free of severe limitations9
Septic permit fee
$150 on the county application10
Effective property tax rate
About 1.6%; median annual bill about $2,4611112
Floodplain development
Development permit required before work unless an exemption applies13

Who to call

Also useful

Adams County Government

The county's own directory of departments, which runs from 9-1-1 and Animal Control through the Health Department, Highway Department, and Sheriff, with no planning, zoning, or building department listed

Roads & driveways

Adams County Highway Department

Construction, maintenance, and repair of the 247-mile county highway system, advising the 22 township road districts, administration of the county's floodplain program, and county GIS/addressing

217-223-0614

101 N 54th St, Quincy, IL 62305-3797

Health department

Adams County Health Department

Permits private sewage disposal system (septic) construction and provides emergency after-hours reporting for Adams County

217-222-8440

health@adamscountyil.gov

330 Vermont St, Quincy, IL 62301

Online permits →

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

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

A general residential building-permit requirement for unincorporated Adams County could not be confirmed1. Adams County does require a Commercial Solar Energy Building Permit and prior siting approval for covered commercial solar facilities, but that specialized rule does not establish a building-permit requirement for a house23. Illinois does not issue building permits for privately funded construction; a municipality, village, city, or county with jurisdiction may impose and administer a building-permit requirement4. Ask the County Clerk which government controls building permits for the parcel before starting work because the county directory does not list a building department14. Illinois's statewide building-code baseline still applies even where no local permit rule has been confirmed15. Building inspections and occupancy certificates, if required, also come from the local government rather than the state1617.

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

Adams County does not list a general building, planning, or zoning department in its official directory, so start with the County Clerk to identify which local government issues residential building permits and zoning approval for the parcel14. Regardless of which city or local authority handles those two approvals, the Adams County Health Department administers the county septic permit; reach it at 217-222-8440 or 330 Vermont St, Quincy, IL 62301518. Illinois also requires a private-well permit from the state or an approved local health department before construction, deepening, modification, or sealing begins7. The Adams County Highway Department administers the county floodplain program and maintains county GIS; reach it at 217-223-0614 or 101 N 54th St, Quincy, IL 62305-379719.

Does Adams County have zoning?

Adams County regulates commercial-solar siting, but we could not confirm comprehensive residential zoning for unincorporated Adams County83. The solar setbacks apply to covered commercial facilities, not homes20. Ask the County Clerk which land-use authority governs a home site; the county directory lists no general planning or zoning department14. Land division is separately regulated: non-exempt divisions require Recorder or designee and County Board approval, and municipal review may apply within 1.5 miles of a municipal boundary21. Even excepted divisions require Recorder or designee approval and the applicable recording fee21. We could not confirm residential setbacks, minimum dwelling size, or RV and tiny-home occupancy; ask the parcel's land-use authority before committing to a layout.

How do septic permits work in Adams County?

Illinois regulates private sewage systems statewide, while the Adams County Health Department issues and administers the county septic permit65. The septic permit covers new, replacement, and altered systems, and the published application fee is $1502210. The application calls for site, use, water-supply, sewer-availability, soil-evaluation, system-design, and licensed-installer information23. The septic permit becomes void one year after issuance, and the installer must notify the Health Department at least 48 hours before installation to schedule the final inspection2425. Only 19% of Adams County soils are rated without severe limitations for a conventional septic drain field, so make septic feasibility an early purchase contingency9. Illinois permits specified alternative toilets for human waste when their standards are met, but other domestic wastewater still requires a private sewage disposal system26.

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

RV occupancy and tiny-home occupancy on a private Adams County parcel could not be confirmed. Illinois's campground rules address qualifying campgrounds, not the separate question of living in an RV on your own land27. Adams County's commercial-solar siting ordinance does not answer residential land-use questions, so do not treat that specialized county regulation—or the absence of a listed general zoning department—as permission to occupy an RV or tiny home314. Ask the County Clerk which land-use authority governs the parcel, then ask that authority about dwelling type, duration, residential setbacks, and utility connections. Manufactured homes follow separate Illinois installation rules, and local zoning, building, floodplain, and utility requirements may still apply28. The Adams County Health Department's septic permit remains separate from city or local building and zoning approval5.

What are the steps to build a home in Adams County?

  1. Ask the County Clerk which local government controls residential zoning and building permits for the parcel; Adams County's confirmed county permit is specific to commercial solar facilities12.
  2. Identify the Illinois baseline building-code requirements before finalizing plans15.
  3. Ask the Adams County Highway Department whether the site is in a regulated floodplain; development there needs a floodplain development permit before work unless an exemption applies1913.
  4. Submit the septic permit application, design, soil evaluation, and $150 fee to the Adams County Health Department; the septic permit expires after one year231024.
  5. Have the licensed septic installer notify the Health Department at least 48 hours before installation so the final inspection can be scheduled25.
  6. Obtain the private-well permit from IDPH or an approved local health department before work; for construction or deepening, notify the permitting health authority at least 2 days before starting729.
  7. For a land division, contact the Recorder about county approval and possible municipal review within 1.5 miles of a municipal boundary21. Bring the original plat and 6 copies for recording30.

What should you check before buying land in Adams County?

Make septic feasibility a purchase contingency: only 19% of Adams County soils are rated without severe limitations for a conventional drain field9. Ask the County Clerk to identify the parcel's residential building-permit and zoning authority; the confirmed county siting rule covers commercial solar143. Ask the Highway Department about road jurisdiction and floodplain review; county-regulated floodplain development needs a development permit before work unless exempt1913. Private-well construction, deepening, modification, or sealing requires a permit before work7. For subdivision plats outside incorporated cities, towns, or villages, a registered Illinois land surveyor's seal is required; plats must identify any FEMA special flood hazard area, and land bordering or including public waters in which Illinois has property rights requires Illinois Department of Transportation approval31. Adams County's effective property-tax rate is about 1.6%, with a median annual bill of about $2,4611112.

Watch-outs

  • Adams County's commercial-solar permit and siting rules do not establish a general residential building-permit or zoning rule; ask the County Clerk which local authority governs a home site2314.
  • A septic permit is void one year after issuance, and the installer must give the Health Department at least 48 hours' notice before installation for the final inspection2425.

Sources

  1. Illinois Codes FAQ (2026 county census)
  2. Solar Farm Ordinance, quoted and re-checked
  3. Solar Farm Ordinance, quoted and re-checked
  4. Illinois Codes FAQ (Illinois statewide rule), quoted and re-checked
  5. Application for Permit to Construct a Private Sewage Disposal System, quoted and re-checked
  6. Private Sewage Disposal, quoted and re-checked
  7. Illinois Water Well Construction Code, quoted and re-checked
  8. Solar Farm Ordinance (2026 county census)
  9. 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
  10. Application for Permit to Construct a Private Sewage Disposal System, quoted and re-checked
  11. Effective property tax rate: Bolthole Index county data
  12. Median property tax bill: Bolthole Index county data
  13. An Ordinance Regulating Development in Floodplain Areas, quoted and re-checked
  14. Adams County Government (adamscountyil.gov)
  15. Building Codes and Regulations (Illinois statewide rule), quoted and re-checked
  16. Illinois Codes FAQ (Illinois statewide rule), quoted and re-checked
  17. Illinois Codes FAQ (Illinois statewide rule), quoted and re-checked
  18. Adams County Health Department (adamscountyil.gov)
  19. Adams County Highway Department (adamscountyil.gov)
  20. Solar Farm Ordinance, quoted and re-checked
  21. Plats and Delineations | Adams County, IL, quoted and re-checked
  22. Application for Permit to Construct a Private Sewage Disposal System, quoted and re-checked
  23. Application for Permit to Construct a Private Sewage Disposal System, quoted and re-checked
  24. Application for Permit to Construct a Private Sewage Disposal System, quoted and re-checked
  25. Application for Permit to Construct a Private Sewage Disposal System, quoted and re-checked
  26. 77 Ill. Adm. Code 905.130 Human Waste Disposal (Illinois statewide rule), quoted and re-checked
  27. Youth Camps and Campgrounds (Illinois statewide rule), quoted and re-checked
  28. Manufactured & Modular Homes/Mobile Structures (Illinois statewide rule), quoted and re-checked
  29. Private Water & Closed Loop Wells, quoted and re-checked
  30. Plats and Delineations, quoted and re-checked
  31. Plats and Delineations, quoted and re-checked

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 5 of its 6 neighbors, Adams County requires a building permit only in limited cases.

RuleAdams CountyBrown CountyPike CountyHancock CountySchuyler CountyMcDonough CountyScott County
Building permitLimitedNot requiredRequiredNot requiredNot requiredLimitedNot required
County zoningYesNoYesNoNoNot publishedNo
Septic permitsCounty Health Dept.County Health Dept.County Health Dept.County Health Dept.County Health Dept.County Health Dept.County Health Dept.

County locator

Adams County in Illinois

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

How Adams County scores

Seclusion54100% ev.
Self-Sufficiency64100% ev.
Admin Boringness7468% ev.
Durability71100% ev.
Property Autonomy42100% ev.
Carry Cost58100% 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 →

$187kTypical home
1.6%Property tax
$8,631Land / acre
39.2"Annual rain
3.7% of yrsSevere drought
8.3 / yr (+7.2)Mid-century 100°F days
16.1 daysMid-century dry spell
2.04" (+4.6%)Mid-century 1-day rain
1.78×Wildfire change factor
100%Forward climate coverage
$1,516Home insurance / yr
3.7% / yrInsurance growth
0.71%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
60,321People within 30 min
1,077,241People within 2 hr
31,309Radius comparison (15 mi)
75.4People / sq mi
1.8%Federal land
90.6%Land at 15% slope or less
19%Soils rated "not limited" for septic (strict USDA rating)
101,561 acWorkable land screen
24.5%Wooded land
48.5 tonsBiomass / forest ac
53°FAvg temp

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Cities and towns in Adams 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: Beverly Township · Burton Township · Camp Point Township · Village of Camp Point · Clayton Township · Village of Clayton · Village of Coatsburg · Columbus Township · Village of Columbus · Concord Township · Ellington Township · Fall Creek Township · Gilmer Township · Village of Golden · Honey Creek Township · Houston Township · Keene Township · Village of La Prairie · Liberty Township · Village of Liberty · Lima Township · Village of Lima · Village of Loraine · McKee Township · Melrose Township · Mendon Township · Village of Mendon · Northeast Township · Payson Township · Village of Payson · Village of Plainville · Quincy · Richfield Township · Riverside Township · Ursa Township · Village of Ursa

Answers from the rulebook for Adams County

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

Adams County rules

  • Building permitRequired

    Commercial Solar Energy Facilities regulated by the Adams County Solar Farm Ordinance.

    • A Special Use Permit and other required approvals apply before construction.
    • The ordinance concerns commercial solar facilities and does not establish a general residential building-permit rule.
    • Prior to issuance, the applicant must satisfy the ordinance's insurance, decommissioning, financial-assurance, and other requirements.

    building permit fee base: 3000 USD (plus $500.00 per megawatt of nameplate capacity) · building permit fee per megawatt: 500 USD/MW

    “"Commercial Solar Energy Building Permit" means a permit necessary for the commencement of work performed toward the construction, erection or installation of an approved Commercial Solar Energy Facility, Substation, Supporting Facilities, or operations and maintenance building in connection with a Commercial Solar Energy Facility.”
  • County-wide zoningPresent (with conditions)

    County regulation of Commercial Solar Energy Facilities and substations within Adams County; this claim does not establish comprehensive residential zoning for all land uses.

    • The ordinance requires prior siting approval for each covered Commercial Solar Energy Facility or joint application.
    • The ordinance is use-specific and should not be treated as proof that every residential parcel is governed by a comprehensive county zoning map.
    “No Commercial Solar Energy Facility or Substation governed by this Ordinance shall be constructed, erected, installed, or located within the county, unless prior siting approval has been obtained for each individual Commercial Solar Energy Facility or a group of Commercial Solar Energy Facilities under a joint siting application pursuant to this Ordinance.”
  • SetbacksSpecified

    Commercial Solar Energy Facilities regulated by the Adams County Solar Farm Ordinance.

    • Setback distances are measured from the nearest edge of any component of the facility.
    • The 50-foot setback for nonparticipating properties may be waived by written consent of each affected property owner.
    • Any waiver runs with the land and must be recorded with the Adams County Recorder of Deeds.
    • The ordinance also requires 150 feet from occupied community buildings and dwellings on nonparticipating properties and 50 feet from public road rights-of-way.

    occupied community buildings and dwellings on nonparticipating properties: 150 feet (from the nearest point on the outside wall of the structure) · boundary lines of participating property: none · public road rights-of-way: 50 feet (from the nearest edge of the public road right of way) · boundary lines of nonparticipating property: 50 feet (to the nearest point on the property line; subject to written-owner waiver)

    “The Commercial Solar Energy Facility shall be sited as follows, with setback distances measured from the nearest edge of any component of the facility. [...] Occupied Community Buildings and Dwellings on Nonparticipating Properties 150 feet from the nearest point on the outside wall of the structure Boundary Lines of Participating Property None Public Road Rights-of-Way 50 feet from the nearest edge of the public road right of way Boundary Lines of Nonparticipating Property 50 feet to the nearest point on the property line of the nonparticipating property”
  • Who permits septicMixed

    Private sewage disposal systems in Adams County.

    • IDPH regulates private sewage disposal systems statewide.
    • Local health agencies may review plans under local authority or as agents of IDPH.
    • The Adams County Health Department issues and administers the county private sewage permit application.
    “The Illinois Department of Public Health (IDPH) regulates the installation of all private sewage disposal systems that have no surface discharge (such as septic tanks and seepage fields) as well as those that discharge treated effluent up to 1,500 gallons per day to the ground surface (such as sand filters and aerobic treatment systems). Staff also review and approve plans for private sewage disposal systems and alternative private sewage disposal systems before construction. There are about 90 local health agencies in Illinois that also review sewage disposal system construction plans, either by authority of a local ordinance or as an "agent" of the Department.”
    One more reviewed finding on this topic
    • County (with conditions) — Adams County Health Department administration of private sewage permits and final inspections.
      “I also accept the responsibility of notifying the Adams County Health Department at least 48 hours prior to installation to schedule a final inspection of the sewage disposal system construction.”
  • Septic permitRequired

    Construction of private sewage disposal systems in Adams County.

    • The application covers new construction and replacement/alteration.
    • The permit is void after one year from the issue date.
    • Surface discharges may also require an NPDES permit.

    permit fee: 150 USD

    “OFFICE USE ONLY: Based on information in this application, permit is hereby granted to construct a private sewage disposal system. NOTE: Permit is void after one (1) year from issue date.”
  • Septic inspectionRequired

    Final inspection of private sewage disposal system construction in Adams County.

    • The installer must notify the Adams County Health Department at least 48 hours before installation.
    • The requirement concerns scheduling a final inspection of sewage disposal system construction.
    “I also accept the responsibility of notifying the Adams County Health Department at least 48 hours prior to installation to schedule a final inspection of the sewage disposal system construction.”
  • Subdividing landRegulated (with conditions)

    Land divisions and subdivision plats presented for recording in Adams County, including unincorporated areas and property within or near municipalities.

    • At recordation, the Recorder’s Office requires the original plat and six copies.
    • Excepted divisions require approval by the Recorder or designee and the applicable recording fee.
    • Exceptions include divisions into parcels or tracts of 5 acres or more without new streets or easements of access; divisions of lots or blocks of less than 1 acre in a recorded subdivision without new streets or easements of access; certain sales or exchanges between adjoining and contiguous landowners; certain railroad, public-utility, pipeline, highway, and public-purpose conveyances; corrections of prior descriptions; certain divisions into no more than 2 parts of a parcel existing on July 17, 1959 without new streets or easements of access; a single lot of less than 5 acres from a larger tract if surveyed by an Illinois Registered Land Surveyor, subject to the stated subsequent-lot and local-requirement limitations; and wind-energy plats under Section 10-620 of the Property Tax Code.
    • For a division not meeting an exception, County Recorder or designee and County Board approval are required, along with the applicable recording fee; all divisions requiring a metes-and-bounds description must be surveyed and have a plat and legal description prepared by an Illinois Licensed Professional Land Surveyor and recorded.
    • If property is within a municipality or within 1.5 miles of a municipality’s corporate boundary, local ordinances or zoning may apply and the participating municipality must be advised to review and approve the division if necessary.
    • Any parcel division partially or wholly within a Drainage District must have corresponding drainage assessments certified to the County Clerk before dividing the property for tax purposes.
    • For plats involving land bordering on or including public waters in which Illinois has property rights or interests, the plat must be under the seal of a registered Illinois Land Surveyor and approved by the Department of Transportation.
    • A map, plat, or subdivision must indicate whether any part lies within a FEMA special flood hazard area.
    • The County Plat Act Affidavit requirement is stated as effective May 10, 2023.

    large-parcel exception threshold: >= 5 acres (No new streets or easements of access.) · recorded-subdivision lot/block exception threshold: < 1 acre (Must be in a recorded subdivision and involve no new streets or easements of access.) · municipal review buffer: 1.5 miles (Measured from the corporate boundary of a municipality.) · required recording copies: 6 copies (Original plat also required.) · recording fee: applicable fee (Applies to divisions requiring Recorder or County Board approval.)

    “A DIVISION OF LAND NOT MEETING ONE OF THE ABOVE EXCEPTIONS – Approval by County Recorder (or designee) and County Board is required”
    2 more reviewed findings on this topic
    • Regulated (with conditions) — Recording maps, plats, and subdivisions in Adams County.
      “At the time of recordation, the Recorder’s Office requires you to present the original plat and six (6) copies.”
    • Regulated (with conditions) — Recording subdivision plats in Adams County, especially land outside incorporated cities, towns, and villages.
      “No person shall offer or present for recording or record any map, plat or subdivision of land situated outside any incorporated city, town or village”
  • Building in a floodplainRequired

    Development within Adams County floodplains under county jurisdiction.

    • A development permit must be obtained before development unless an exemption applies.
    • The County Board may not issue a permit if the proposed development does not meet the ordinance requirements.
    • The application must include scaled site drawings, property-line dimensions, existing and changed grades, building locations and dimensions, and lowest-floor elevations.
    • Land shown by survey to be above the base flood elevation as of the first Flood Insurance Rate Map identification is not subject to the ordinance.
    “The County Board shall not issue a development permit if the proposed development does not meet the requirements of this ordinance.”
  • Permit feesPublished (with conditions)

    Private sewage disposal system construction permits issued through the Adams County Health Department.

    • The published fee is on the septic application form and may not represent fees for other county permits.

    septic permit fee: 150 USD

    “PERMIT NUMBER: Date: Permit Fee: $150.00 ☐Cash ☐Check/#_______”
  • Permit processPartial

    Private sewage disposal system permitting in Adams County.

    • The application requires owner, contractor, site, dwelling/use, water-supply, public-sewer, soil, and system-design information.
    • A licensed installer must notify the Adams County Health Department at least 48 hours before installation for final inspection.
    • The permit is void after one year from issue date.
    • This does not establish the general residential building-permit process.

    advance notice: 48 hours (For scheduling final inspection.) · permit validity: 1 year (Permit is void after one year from issue date.)

    “Permit is void after one (1) year from issue date.”
    One more reviewed finding on this topic
    • Published (with conditions) — Private sewage disposal system permit process in Adams County.
      “I also accept the responsibility of notifying the Adams County Health Department at least 48 hours prior to installation to schedule a final inspection of the sewage disposal system construction.”

Illinois rules that apply here

  • 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.”
  • 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.”
  • 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.”
  • 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.”
    2 more reviewed findings on this topic
    • Required — Construction, modification, or abandonment of private water wells serving Adams County.
      “In all cases, a water well construction permit must be obtained from the local health department before construction.”
    • Required — Construction, deepening, modification, or sealing of water wells in Adams County under Illinois law.
      “A permit to construct, deepen, modify or seal a water well shall be obtained”
  • 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.”
  • 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.

  • Local zoning — Local zoning across Adams County municipalities, townships, villages, and unincorporated areas.
  • Zoning districts — Published zoning district maps and schedules for Adams County unincorporated areas.
  • Minimum dwelling size — Minimum dwelling size requirements in Adams County.
  • Minimum lot size — Minimum lot-size requirements in Adams County.
  • Lot coverage — Lot coverage in Adams County unincorporated areas.
6 more unanswered
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Mandatory utility hookup
  • Agricultural exemption

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

Living off-grid in Adams County, Illinois

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

Adams County scores 73/100 on the Bolthole Index, a strong county profile. Its strengths: low administrative friction for a quiet rural property and mixed durability signals.

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

Adams County requires a building permit only in limited cases (such as floodplains or specific zones), and it enforces county zoning. Onsite septic is permitted by Adams County Health Department. 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 Adams County, Illinois?

Land in Adams County runs about $8,631 per acre, based on the latest county data.

What is the water situation in Adams County?

Adams County gets about 39.2" of rain a year, with severe drought in roughly 3.7% of years.

How remote is Adams County?

A representative private-land location has about 60,321 people within a 30-minute drive and 1,077,241 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 Adams compares in Illinois

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