Bolthole Index

St. Clair County, Illinois

Building permits, zoning and septic rules in East St. Louis, Illinois

East St. Louis, Illinois runs its own zoning, with R-1, R-1A, R-2 and R-3 residential districts1, and issues its own city building permits for new structures and structural changes2. Septic tanks are unlawful inside the city except where the city's sewer article allows them3. St. Clair County's rules cover only land outside city limits.

At a glance

Building permit
Required from the city for new structures and structural changes2
Zoning
City zoning with residential districts R-1, R-1A, R-2 and R-31
Building codes
City adopts the International codes by reference4
Septic
Unlawful except as the city sewer article allows; allowed only where public sewer is not available35
Minimum lot, R-1
6,000 sq ft per dwelling, 60 ft frontage6
RV living
Zoning rule not confirmed; floodplain rule applies after 180 days a year7
Floodplain
Permit from the director of buildings and grounds in A zones8

Who to call

Building permits

City of East St. Louis – Permits

City building permits inside East St. Louis

618-482-6600

301 River Park Drive, East St. Louis, IL 62201

Building permits

City of East St. Louis – Inspections

Construction inspections and certificates of occupancy inside East St. Louis

618-482-6826

301 River Park Drive, East St. Louis, IL 62201

Septic permits

St. Clair County Health Department – Water & Private Sewage

Private sewage disposal (septic) permits for St. Clair County

618-233-7769

scchdinfo@co.st-clair.il.us

19 Public Square, Suite 150, Belleville, IL 62220

Contact details are copied from each office’s official page and were checked against it on October 16, 2026.

Off-grid gear

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

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Do you need a building permit in East St. Louis, Illinois?

Yes. The City of East St. Louis lists projects that require a city building permit, including new structures and any structural changes, decks, fences, sheds, demolitions and sewer repairs2. The city also adopts the International Building, Residential, Mechanical, Fire, Plumbing and related codes by reference4. We could not confirm the city's permit fees or whether any owner-builder exemption applies, so ask the permit line before you plan a budget or a schedule2.

This is the city's rule, not St. Clair County's. The county's building permits cover only unincorporated land; see the St. Clair County page for land outside city limits.

Who issues building permits in East St. Louis, and how do you reach them?

The City of East St. Louis issues its own building permits. Call 618-482-6600, 8:30 a.m. to 4:30 p.m., Monday through Friday, at City Hall, 301 River Park Drive2. Inspections are requested separately on 618-482-6826 and need the address, the type of inspection and the permit number9.

All new construction must pass city inspection before the Department of Regulatory Affairs issues a certificate of occupancy9. Required stages include footing, foundation, slab, framing and final inspections9.

Does East St. Louis have zoning, and what does it mean for lot size and setbacks?

East St. Louis has city zoning. Chapter 122 of the city code sets R-1, R-1A, R-2 and R-3 residential districts1. Rules differ by district.

In the R-1 single-family district, the minimum lot is 6,000 square feet per dwelling, with 60 feet of frontage and 100 feet of depth6. The R-1 principal building needs a 25-foot front yard, 5-foot side yards and a 20-foot rear yard10. In R-1A the minimum lot is 5,000 square feet with 50 feet of frontage11. R-1 buildings may cover 30 percent of the lot, with accessory buildings limited to 10 percent12, and the principal building may be 35 feet tall13.

Manufactured homes must sit on a concrete foundation with footings at least 30 inches below grade14. We could not confirm which districts allow them, or any rule on tiny homes or accessory dwellings; ask the Department of Regulatory Affairs at 618-482-66002.

How do septic permits work inside East St. Louis?

Septic is the exception to easy rural building in East St. Louis. The city code makes it unlawful to install a septic tank, cesspool or lagoon except as the city's sewer article provides3. A private system is allowed only where public sewer is not available, meaning not within 150 feet of the property, and the system must be approved15. Once sewer becomes available, the property must connect and abandon the old tank5.

St. Clair County requires a permit from the County Health Department before a private sewage system is built or repaired, with a $300 application fee16. We could not confirm how the city and the health department split septic review for a lot inside city limits, so call the Health Department at 618-233-7769 and the city permit line before buying a lot without sewer16.

Can you live in an RV or tiny home in East St. Louis?

We could not confirm a general zoning rule on living in an RV or tiny home inside East St. Louis. The one rule we found is a floodplain rule: in the mapped floodplain, an RV kept on a site more than 180 days a year is treated as a building and must meet elevation and protection requirements, unless it is road-ready, 400 square feet or smaller and not a permanent dwelling7. Ask the Department of Regulatory Affairs at 618-482-6600 about RV and tiny-home occupancy on a specific lot2.

Building a home in East St. Louis: the steps, in order

  1. Confirm the lot's zoning district on the city's zoning map and check lot size and setbacks for that district1.
  2. Check whether the lot is in a mapped floodplain; development there needs a permit from the director of buildings and grounds8.
  3. Check whether public sewer is within 150 feet of the lot15, and if not, call the St. Clair County Health Department about septic16.
  4. Apply for the city building permit on 618-482-66002.
  5. Request each inspection on 618-482-6826 as work reaches that stage9.
  6. Pass final inspection to obtain the certificate of occupancy9.

What stays with St. Clair County, and what to check before you buy

Septic permits and wells are not city-issued building permits: St. Clair County requires a permit from its Health Department before a private sewage system is built or repaired16. Illinois also requires a permit from the state health department or an approved local health department before a new water well is drilled17.

For land outside city limits, the county has separate rules; see the St. Clair County page. County figures include an effective property tax rate of 2.1 percent18 and a median property tax bill of $3,533 a year19.

Watch-outs

  • Do not assume the county's rules apply: inside East St. Louis, the city sets zoning and issues building permits, and St. Clair County's unincorporated rules do not govern city lots1.
  • We could not confirm the city's building permit fees, owner-builder rules or how septic review is split between the city and the St. Clair County Health Department; call 618-482-6600 and 618-233-7769 before you commit216.
  • Lots in the mapped floodplain need a city floodplain permit, and new buildings must be raised to the flood protection elevation, one foot above the base flood8.

Sources

  1. Sec. 122-72. Schedule I, residential district regulations (East St. Louis), quoted and re-checked
  2. City of East St. Louis – Permits (cesl.us)
  3. Sec. 114-36. Unlawful discharge generally (East St. Louis), quoted and re-checked
  4. Sec. 22-1. Codes adopted by reference (East St. Louis), quoted and re-checked
  5. Sec. 114-62. Availability of public sewer (East St. Louis), quoted and re-checked
  6. Sec. 122-72. Schedule I, residential district regulations (East St. Louis), quoted and re-checked
  7. Sec. 58-107. Protecting buildings (East St. Louis), quoted and re-checked
  8. Sec. 58-81. Permit required (floods) (East St. Louis), quoted and re-checked
  9. City of East St. Louis – Inspections (cesl.us)
  10. Sec. 122-72. Schedule I, residential district regulations (East St. Louis), quoted and re-checked
  11. Sec. 122-72. Schedule I, residential district regulations (East St. Louis), quoted and re-checked
  12. Sec. 122-72. Schedule I, residential district regulations (East St. Louis), quoted and re-checked
  13. Sec. 122-72. Schedule I, residential district regulations (East St. Louis), quoted and re-checked
  14. library.municode.com (East St. Louis), quoted and re-checked
  15. Sec. 114-61. Connections generally; exemption (East St. Louis), quoted and re-checked
  16. St. Clair County Health Department – Water & Private Sewage (scchealthdept.com)
  17. 77 Ill. Admin. Code 920.130, Water Well Permit Requirements (Illinois statewide rule), quoted and re-checked
  18. Effective property tax rate: Bolthole Index county data
  19. Median property tax bill: Bolthole Index county data

Written October 16, 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 East St. Louis

East St. Louis’s own rules

  • Building code adoptedAdopted

    Construction inside East St. Louis city

    • Adopts the 'current' International Building, Residential, Mechanical, Fire, Property Maintenance, Existing Building, Fuel Gas, Energy, Plumbing and Electric codes by reference.
    • Where a local ordinance or state statute conflicts with the technical code, the local ordinance or state statute controls.
    “the city adopts by reference the following construction codes:”
  • Local zoningPresent

    Land inside East St. Louis city limits

    • Chapter 122 of the city code establishes R-1, R-1A, R-2 and R-3 residential districts.
    “the following regulations shall apply to r-1 single family residential districts within the city:”
  • Minimum lot sizeSpecified

    R-1 single-family district, East St. Louis city

    • Minimum lot frontage 60 feet; depth 100 feet.
    • Lots on public water with on-lot sewage need 10,000 sq ft per dwelling or 75 ft width (Sec. 122-147).

    lot area per dwelling unit: >= 6000 sq ft

    “(5) lot area per dwelling unit (minimum): 6,000 square feet. (6) lot frontage (minimum): 60 feet. (7) lot depth (minimum): 100 feet.”
    One more reviewed finding on this topic
  • SetbacksSpecified

    R-1 single-family district, principal building

    • Accessory structures follow Sec. 122-181 (e.g., 3 ft interior side, 5 ft rear).

    front yard: >= 25 feet · side yard (each; combined min 10 ft): >= 5 feet · rear yard: >= 20 feet

    “(8) yards (minimum). a. front yard: 25 feet. b. side yard: five feet for each, but not less than a combined minimum of 10 feet. c. rear yard: 20 feet.”
    One more reviewed finding on this topic
  • Lot coverageSpecified

    R-1 single-family district (R-1A has the same limits by its own schedule)

    • Coverage is the percentage of a zone lot occupied by all principal and accessory buildings.

    principal building coverage: <= 30 percent · accessory building coverage: <= 10 percent

    “(9) building coverage (maximum). a. principal building: 30 percent. b. accessory building: ten percent.”
  • Building heightSpecified

    R-1 single-family district (R-1A has identical height limits)

    • Accessory building: 1½ stories, no more than 15 feet.

    principal building height: <= 35 feet (and 2½ stories) · accessory building height: <= 15 feet (and 1½ stories)

    “(4) height (maximum). a. principal building: 2½ stories, but no more than 35 feet. b. accessory building: 1½ stories, but no more than 15 feet.”
  • Living in an RVLimited

    Travel trailers/RVs in the mapped floodplain inside East St. Louis city; general zoning RV rules not found

    • RV on site more than 180 days per year is treated as a building and must meet elevation/protection requirements unless it meets listed road-ready conditions (400 sq ft or less, hitch, licensed, not a permanent dwelling).

    days per year on site before building protection applies: > 180 days (road-ready exemption in Sec. 58-107(b)(4))

    “installing a travel trailer or recreational vehicle on a site for more than 180 days per year;”
  • Manufactured homesLimited

    Manufactured homes placed inside East St. Louis city

    • Roof pitch at least 3:12 with asphalt shingles or equivalent; BOCA-compliant guttering and wall framing (2x4 minimum).
    • Brick veneer on three walls where brick predominates; front wall always brick.
    • Footings at least 30 inches below grade.
    • Which districts allow manufactured homes not verified.

    footing depth: >= 30 inches

    “all manufactured homes must be placed and permanently anchored to a concrete foundation. footings shall be a minimum of 30 inches below the existing grade.”
  • Who permits septicLocal (with conditions)

    Private sewage disposal (septic) inside East St. Louis city

    • City code makes septic tanks and cesspools unlawful except as provided in the sewer article; the city's role in permitting/inspection was not found, and the health department's role was not verified.
    “except as provided in this article, it shall be unlawful to install any cesspool, septic tank, lagoon or other facility intended or used for the disposal of sewage.”
  • Off-grid sanitationLimited

    Private sewage disposal inside East St. Louis city

    • Allowed only where public sewer is not available (not within 150 feet) and the system is approved and complies with the article.
    • Must connect to public sewer once available.
    “where a public sanitary sewer is not available under the provisions of this article, the building sewer shall be connected to an approved private or semipublic sewer or sewage disposal system or sewage treatment facility complying with the provisions of this article.”
  • Mandatory utility hookupSewer (with conditions)

    Properties inside East St. Louis city served by private sewage systems when public sanitary sewer becomes available

    • Sewer is available if within 150 feet of any part of the property.
    • Existing septic tanks/cesspools must be abandoned and filled.
    • Exemption for private sewers owned and operated by industrial establishments with direct connection to state waters.
    • Water connection rule not found.

    sewer availability distance: <= 150 feet

    “a sewer shall be considered to be available if it is within 150 feet of any part of the property to be connected to the sewer.”
  • Building in a floodplainRequired

    Development in A zones (floodplain) inside East St. Louis city

    • Permit issued by the director of buildings and grounds; denied if noncompliant with the chapter or lacking required state/federal permits.
    • New buildings over $1,000 or 70 sq ft, substantial improvements, and manufactured homes must be protected to the flood protection elevation (base flood plus one foot).

    freeboard: 1 foot

    “no person shall commence any construction, substantial improvement, subdivision of land, placement of mobile homes or other development in areas located in an a zone without first obtaining a permit from the director of buildings and grounds.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask East St. Louis or St. Clair County directly.

  • Building permit — General building permits inside East St. Louis city
  • Owner-builder exemption — Owner-builder exemption inside East St. Louis city
  • Inspections — Building inspections inside East St. Louis city
  • Certificate of occupancy — Certificates of occupancy inside East St. Louis city
  • Minimum dwelling size — Minimum dwelling floor area inside East St. Louis city
12 more unanswered
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Septic permit
  • Septic inspection
  • Well permit
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Short-term rentals
  • Permit fees
  • Permit process

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 East St. Louis publishes no rule on the point, not that none exists. St. Clair County’s page lists the county offices to call.

← All of St. Clair County: county rules, score and offices