Bolthole Index

Will County, Illinois

Building permits, zoning and land rules in Joliet, Illinois

Joliet, Illinois requires city building permits for listed residential work, including decks, garages, sheds and roofing; most listed permits also need Planning & Zoning review.1 Joliet has its own zoning ordinance, separate from the rules for unincorporated Will County.23 For a Will County parcel using septic, the Will County Health Department administers private sewage permitting, and Illinois requires plan approval before construction.45

At a glance

Building permits
City-issued permits required for listed residential construction1
Zoning
Joliet zoning ordinance applies inside the city2
Septic
Will County Health Department administers private sewage permitting in Will County; obtain plan approval before construction45
Move-in approval
Certificate of Occupancy required after covered construction, before occupancy or use6
Sewer connections
Below 1,500 gallons per day, City sewer connections require only a local building permit under the cited connection rule7
Private wells
Illinois requires a permit before construction, modification or sealing8
Owner plumbing work
Conditional Illinois owner-occupant exemption; local plumbing permits and inspections may still apply910

Who to call

Building permits

City of Joliet Building Division

Residential building permit requirements, survey review and permit payment instructions

815-724-4070

[email protected]

Building permits

City of Joliet Building & Inspectional Services Division

Building code enforcement, construction inspections and electronic plan review

815-724-4070

[email protected]

150 W Jefferson St., Joliet, IL 60432

Zoning

City of Joliet Planning & Zoning

Contact for city zoning and parcel-specific land-use questions

815-724-4050

[email protected]

150 W Jefferson St. Joliet, IL 60432

Septic permits

Will County Health Department — Private Sewage Program

Private sewage systems and well services for Will County parcels

815-727-8490

501 Ella Avenue Joliet, IL 60433

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

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

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Do you need a building permit in Joliet, IL?

Joliet requires city building permits for listed residential projects, including decks, fences, garages, patios, driveway paving, pools, roofing, siding, windows and sheds.1 Most listed residential permits also require Planning & Zoning review, so a building application can involve both construction requirements and the proposed location on the lot.111 Mark the proposed work on the plat of survey for Planning Division review of its location and size.11 Incomplete applications or applications missing required supporting documents are returned.12 For covered construction in Joliet, the building must be complete and a Certificate of Occupancy obtained before occupancy or use.6

Who handles Joliet building permits and inspections?

Contact the City of Joliet Building Division at 815-724-4070 for residential building permit questions, and use [email protected] for the residential permit payment follow-up described by the city.11 Joliet sends an invoice when a residential building permit is approved and ready for issuance.13 After paying, follow the city instructions to notify the Building Department: the payment system does not automatically notify the department, and building permits are not issued in person over the counter.11 The Building & Inspectional Services Division enforces city-adopted building codes and requires inspections according to permit type.14 Joliet also uses ProjectDox for electronic plan review and lists [email protected] for that application process.14

Does Joliet have zoning, and can you live in an RV or tiny home?

Joliet has a city zoning ordinance; incorporated municipalities with their own zoning ordinances are outside Will County zoning jurisdiction.23 We could not confirm Joliet rules resolving long-term RV occupancy, temporary camping, tiny-home occupancy or accessory dwellings; ask City Planning & Zoning about the intended use before buying a lot.15 We also could not confirm Joliet residential district standards for minimum lot area, dwelling size, setbacks, height or lot coverage; request the standards for the parcel’s district from City Planning & Zoning.15 Joliet’s farm-animal provision allows farm animals only on property meeting the city zoning ordinance’s farm definition and criteria.2

How do septic permits and water connections work in Joliet?

For a Joliet parcel in Will County, the Will County Health Department administers private sewage permitting; the county requires a soil evaluation before a new onsite wastewater permit is issued.416 Illinois requires approval from IDPH or the applicable local authority before construction of a new private sewage system and at least 48 hours’ notice before work begins.5 Confirm the parcel’s service arrangements with the health department and City Building Division before committing to septic.1711 For City sanitary sewer taps or extensions, connections below 1,500 gallons per day require only a local building permit under Joliet’s connection rule; larger connections require IEPA authorization.7 A new water-main extension requires an IEPA construction permit before the main is built.7

Building a home in Joliet: what are the steps?

  1. Ask City Planning & Zoning to confirm the parcel’s zoning and the proposed residential use; we could not confirm the applicable Joliet district dimensions here.15
  2. Confirm City water and sewer extension requirements, or contact the Will County Health Department about an onsite system for a Will County parcel.74
  3. Submit completed applicable building permit forms and supporting documents through the city’s stated application process; contractors performing the work must pull the permit and have current registration before issuance.12
  4. Pay the invoice after approval and follow the Building Division’s payment-notification instructions.1311
  5. Arrange the inspections required for the permit with Building & Inspectional Services, then obtain the Certificate of Occupancy before using or occupying the completed building.146

What should you check before buying land in Joliet?

For land outside Joliet city limits, consult the Will County guide: the county building permit requirement applies to regulated work in unincorporated Will County.18 For a private well inside Joliet, Illinois requires a permit from IDPH or an approved local health department before construction, modification or sealing; ask the Will County Health Department to confirm the administering office for the address.817 Joliet reviews new subdivisions in special flood-hazard areas for consistency with its flood-development requirements and flood-damage minimization.19 We could not confirm a general Joliet owner-builder exemption; Illinois’ conditional owner-occupant plumbing exemption still allows local plumbing permits and inspections.11910

Watch-outs

  • We could not confirm permission to occupy an RV or tiny home on private land in Joliet; ask City Planning & Zoning before making either part of a construction plan.15
  • Illinois allows specified human-waste disposal options, including compost toilets, but other domestic wastewater still requires a conventional private sewage disposal system; confirm Joliet acceptance with the city and health department.201117
  • Joliet’s Building & Inspectional Services page says the amended 2024 IECC took effect in 2025; ask the division which current energy-code requirements apply to the project.14

Sources

  1. Building Permit Forms | City of Joliet, IL (Joliet), quoted and re-checked
  2. City of Joliet Code of Ordinances, Sec. 6-10 (Joliet), quoted and re-checked
  3. Will County Code § 155-1.40, Applicability and Jurisdiction, quoted and re-checked
  4. Wells and Septic Systems | Will County Health Department, quoted and re-checked
  5. 77 Ill. Adm. Code 905.190 Installation Approval (Illinois statewide rule), quoted and re-checked
  6. Building Code and Contractor Information | City of Joliet, IL (Joliet), quoted and re-checked
  7. Building Permit Forms | City of Joliet, IL (Joliet), 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 (Illinois statewide rule), quoted and re-checked
  10. 225 ILCS 320/18 — Local regulation; Department standards (Illinois statewide rule), quoted and re-checked
  11. City of Joliet Building Division (joliet.gov)
  12. Building Permit Forms | City of Joliet, IL (Joliet), quoted and re-checked
  13. Residential Building Permit Information | City of Joliet, IL (Joliet), quoted and re-checked
  14. City of Joliet Building & Inspectional Services Division (joliet.gov)
  15. City of Joliet Planning & Zoning (joliet.gov)
  16. Will County Health Department Board of Health packet — Private Sewage Disposal Ordinance, quoted and re-checked
  17. Will County Health Department — Private Sewage Program (willcountyhealth.org)
  18. Chapter 150 Will County Building Code, quoted and re-checked
  19. City of Joliet Code of Ordinances, Sec. 8-510 (Joliet), quoted and re-checked
  20. 77 Ill. Adm. Code 905.130 Human Waste Disposal (Illinois statewide rule), quoted and re-checked

Written October 11, 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.

Answers from the rulebook for Joliet

Joliet’s own rules

  • Building permitRequired

    The enumerated residential construction types inside the City of Joliet, including decks, fences, garages, patios, paving, pools, roofing, siding, windows, and sheds.

    • A permit application is required for each permit type; incomplete submissions or submissions without required supporting information are returned.
    • Most listed residential permits require Planning & Zoning Department review.
    “The following types of residential construction require a permit issued by the City of Joliet Building Department. Most of the permits require review from the Planning & Zoning Department.”
  • Certificate of occupancyRequired

    Occupancy or use of a building inside the City of Joliet after covered construction.

    • Before occupancy or use, the building must be 100% complete; construction drawings on CD are required before occupancy is granted.
    “Before occupying or using building, the building MUST BE 100% complete. The applicant must obtain a Certificate of Occupancy from the Inspections Division.”
  • Local zoningPresent (with conditions)

    Land inside the City of Joliet, Illinois.

    • The cited provision specifically incorporates criteria in Sec. 47-3.9(c) of the City of Joliet zoning ordinance for farm-animal eligibility.
    “Farm animals shall be allowed on property meeting the definition and criteria of a farm as set forth in section 47-3.9(c) of the zoning ordinance of the City of Joliet.”
  • Mandatory utility hookupConditional

    Extensions of City water or sanitary sewer service inside the City of Joliet.

    • For a new water-main extension, an IEPA water-main construction permit is required before the main is built.
    • For City sanitary-sewer taps or extensions, IEPA authorization is required; connections of less than 1,500 gallons per day require only a local building permit.
    • This source does not establish that every new home must connect when service is available.

    IEPA permit threshold for sanitary-sewer connection: >= 1500 gallons per day (Connections below this level require only a local building permit according to the City page.)

    “Before City sewers can be tapped or extended, the applicant must receive authorization from the IEPA to connect to or extend a sanitary sewer. IEPA permits are required for any connection of 1500 gallons per day or greater. Connections of less than 1500 gallons per day require only local building permit.”
  • Subdividing landRegulated (with conditions)

    New subdivisions inside City special flood-hazard areas.

    • The cited standard is limited to new subdivisions within the SFHA and requires consistency with Secs. 8-506 through 8-509 and flood-damage minimization.
    • Plans for new subdivisions must include base-flood/100-year-frequency elevation data and floodway delineations under Sec. 8-510(2).
    “New subdivisions, manufactured home parks, annexation agreements, and planned unit developments (PUDs) within the SFHA shall be reviewed to assure that the proposed developments are consistent with sections 8-506, 8-507, 8-508 and 8-509 of this article and the need to minimize flood damage.”
  • Permit feesPublished (with conditions)

    Residential building permits inside the City of Joliet.

    • The City provides permit-fee payment information after approval and invoice issuance; fee amount varies by permit and project and was not established by the opened page.
    “Once your permit is approved and ready to be issued, you will receive an invoice via email. Please use one of the methods below to complete the payment process.”
  • Permit processPublished (with conditions)

    Building permit applications inside the City of Joliet.

    • Applicants must submit completed applicable forms and required permit documents by email or City Hall drop box.
    • Incomplete submissions or submissions without required supporting documents are returned; contractors performing work must pull the permit and have current registration before issuance.
    “To submit your information for a building permit, you have two options:”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Joliet or Will County directly.

  • Owner-builder exemption — Owner-builder work inside the City of Joliet.
  • Minimum dwelling size — Residential zoning districts inside the City of Joliet.
  • Minimum lot size — Residential zoning districts inside the City of Joliet.
  • Setbacks — Residential zoning districts inside the City of Joliet.
  • Lot coverage — Residential zoning districts inside the City of Joliet.
12 more unanswered
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Agricultural exemption
  • Short-term rentals

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

Unanswered questions are usually a sign that Joliet publishes no rule on the point, not that none exists. Will County’s page lists the county offices to call.

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