Bolthole Index

Hancock County, Illinois

Building permits, zoning and septic rules in Nauvoo, Illinois

Nauvoo, Illinois requires city building permits for qualifying residential construction and alterations, with applications filed through the city clerk.1 Nauvoo has municipal zoning, separate from Hancock County’s lack of county zoning.23 Private sewage systems need city approval as well as permit applications through Hancock County Health Department.45

At a glance

Building permits
City permit for qualifying construction and alterations; maintenance and qualifying portable sheds excluded1
Zoning
Nauvoo has municipal zoning2
Building codes
International Building Code edition used by the city; confirm current edition6
Septic approval
City approval plus Hancock County Health Department application45
Septic lot area
15,000 square feet for subsurface absorption; smaller lots require written-plan approval4
Application timing
Submit 7 days before the regular city council meeting7

Who to call

Building permits

Nauvoo City Clerk / City Hall

City building-permit application contact; ask for the building inspector and zoning review.

(217) 453-2587

1445 Mulholland Street, Nauvoo, IL 62354

Septic permits

Hancock County Health Department

Private septic-system permit applications, including new systems, repairs, and replacements

217-357-2171 option 4

Online permits →

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 Nauvoo means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Nauvoo, IL?

Nauvoo requires a written building-permit application before qualifying construction or alteration of a building, structure or parking lot begins.1 For private residences, the requirement applies when the footprint changes, specified structural elements are added or relocated, or the building’s purpose or use changes.1 Normal upkeep and maintenance are excluded, as are portable storage sheds on skids no larger than 8 by 16 by 8 feet and 128 square feet.1 Plumbing changes, electrical changes and roofing require consultation with Nauvoo’s building inspector; licensed contractors may be required.1 New construction and remodeling must follow the International Building Code edition the city uses and other applicable city codes; ask the inspector which edition applies before preparing plans.6

Who handles building-permit applications in Nauvoo?

Nauvoo building-permit applications go to the city clerk.1 Contact City Hall at (217) 453-2587 or visit 1445 Mulholland Street, Nauvoo, IL 62354.8 The building inspector reviews the application and project site, and informs adjacent owners if property lines are in question.9 The streets, buildings and grounds committee reviews the inspector’s remarks before city council review.7 Ask the clerk for the current application, fee and council calendar, and ask to be directed to the building inspector for questions about your proposed construction.8

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

Nauvoo has municipal zoning, including Rural Residential and Single- and Two-Family Residential Dwelling districts.2 Hancock County’s lack of county zoning does not remove Nauvoo’s city zoning.32 For land outside city limits, consult the Hancock County guide for the county zoning answer.3 We could not confirm Nauvoo’s district-specific lot sizes, setbacks, height or coverage limits; ask City Hall to identify the parcel’s district and provide the applicable schedule.8 We also could not confirm private-land RV living, temporary camping, tiny-home, manufactured-home or accessory-dwelling occupancy rules; ask City Hall for a written answer tied to your proposed use before buying a unit.8

How do septic permits work inside Nauvoo?

Nauvoo allows private sewage disposal only where public sanitary sewer is unavailable, with city approval, inspection and state compliance.4 Subsurface absorption systems require a lot of at least 15,000 square feet unless the water and sewer committee and city council approve a written plan for a smaller lot.4 Hancock County Health Department receives private septic applications, and requires a licensed soil scientist and generally a licensed septic contractor.10 The county application lists a $125 permit fee; confirm the current amount with the septic office at 217-357-2171 option 4.1112 The county application allows sewage-system work by qualifying homeowners who own and occupy their personal single-family residence; ask the health department how that condition applies to your project.13

Building a home in Nauvoo: what are the steps?

  • Ask City Hall to identify the parcel’s zoning district and direct you to the building inspector for project review.28
  • Ask Nauvoo Public Works about water, sewer and street service; the department handles those municipal systems.8
  • If public sewer is unavailable, coordinate city sewage approval with the county health-department application and soil evaluation.410
  • Submit the building-permit application to the city clerk 7 days before the regular city council meeting for inspector, committee and council review.7
  • Begin authorized construction within 90 days of approval; the code also describes expiration after 90 days and invalidation after 90 days of suspension or abandonment, so confirm the schedule with the clerk.7
  • Arrange city and county septic final inspections before covering underground work.1415

What should you check before buying land in Nauvoo?

Ask Nauvoo Public Works whether the specific parcel has available public water and sewer service; the department is responsible for those municipal systems and streets.8 When public sewer becomes available to a property using private sewage disposal, Nauvoo requires connection within 90 days and abandonment, cleaning and filling of the private facilities.16 The city code lists a $500 connection fee for that transition, subject to adjustment.16 Illinois requires permits for new private-well construction through IDPH and local health departments, but we could not confirm Nauvoo-specific groundwater restrictions; ask the health department and City Hall before relying on a well.178 Ask City Hall about floodplain approval and driveway access before committing to a purchase; the specific Nauvoo requirements remain unconfirmed.8

Watch-outs

  • We could not confirm Nauvoo’s current building-permit fees, occupancy-certificate requirements or general owner-builder exemption; ask the city clerk and building inspector before budgeting construction.8
  • Nauvoo requires city inspection of private sewage work before underground portions are covered, alongside county health-department inspection.1415

Sources

  1. 6-3-1: Notification Required (Nauvoo), quoted and re-checked
  2. Title 10 Zoning Regulations (Nauvoo), quoted and re-checked
  3. hancockcounty-il.gov, quoted and re-checked
  4. 3-4-3: Private Sewage Disposal (Nauvoo), quoted and re-checked
  5. Private Septic - Hancock County Health Department, quoted and re-checked
  6. codelibrary.amlegal.com (Nauvoo), quoted and re-checked
  7. 6-3-3: Permit Submission (Nauvoo), quoted and re-checked
  8. Nauvoo City Clerk / City Hall (beautifulnauvoo.com)
  9. 6-3-3: Permit Submission (Nauvoo), quoted and re-checked
  10. Private Septic - Hancock County Health Department, quoted and re-checked
  11. Hancock County Health Department Private Sewage Plan Review Application, quoted and re-checked
  12. Hancock County Health Department (hancockcountyhealthdepartment.org)
  13. Hancock County Health Department Private Sewage Plan Review Application, quoted and re-checked
  14. 3-4-3: Private Sewage Disposal (Nauvoo), quoted and re-checked
  15. Hancock County Health Department Private Sewage Plan Review Application, quoted and re-checked
  16. 3-4-3: Private Sewage Disposal (Nauvoo), quoted and re-checked
  17. Private Water & Closed Loop Wells | Illinois Department of Public Health, 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.

Answers from the rulebook for Nauvoo

Nauvoo’s own rules

  • Building permitRequired

    Construction or alteration of buildings, structures, or parking lots inside Nauvoo city limits; private residences are subject to the specific limits below.

    • Normal upkeep and maintenance projects are excluded.
    • Portable storage sheds are excluded only if they are no more than 8' x 16' x 8', no more than 128 square feet, and portable on skids.
    • For a new private residence or alteration, a permit is required only when the footprint is new or altered, specified structural elements are added or relocated, or the building purpose or use is altered.
    • Plumbing and electrical changes and roofing require consultation with the building inspector; licensed contractors may be required.

    portable shed maximum area: <= 128 sq ft (Must also be no more than 8' x 16' x 8' and portable on skids.)

    “Prior to the commencement of the construction or alteration of any new or existing building, structure or parking lot, excluding normal upkeep and maintenance projects and small, portable storage sheds not to exceed eight feet by sixteen feet by eight feet (8' x 16' x 8') and having no more than one hundred twenty eight (128) square feet, and being portable on skids, the owner or his duly authorized agent shall file a written application for building permit in the office of the city clerk.”
  • Building code adoptedPartial

    New buildings, structures, and remodeling inside Nauvoo city limits.

    • The specific International Building Code edition is not identified in the cited passage.
    • Other applicable codes listed in Title 6 also apply.
    “Construction of any new building or structure, and remodeling of an existing building or structure (including attached or detached garages), shall be performed according to the provisions contained in the edition of the international building code being used by the city of Nauvoo at the time of construction and according to any other applicable codes as listed in chapter 6 of this title.”
  • InspectionsRequired

    Building permit applications and project sites inside Nauvoo city limits.

    • The building inspector reviews the permit and project site.
    • If property lines are in question, adjacent property owners are informed.
    “The building inspector will review the permit and project site and if the property lines are in question, will inform the adjacent property owners concerning the application for building permit.”
  • Local zoningPresent

    Land inside Nauvoo city limits; Nauvoo's municipal code contains Title 10 Zoning Regulations.

    “TITLE 10 ZONING REGULATIONS [...] RR Rural Residential District [...] R Single- And Two-Family Residential Dwelling District”
  • Septic inspectionRequired

    Private sewage disposal systems inside Nauvoo city limits.

    • The permit is ineffective until installation is completed to the city's satisfaction.
    • The city may inspect at any construction stage.
    • The permit applicant must notify the city for final inspection before underground portions are covered.
    • Inspection must occur within 24 hours after written notice.

    inspection deadline after written notice: 24 hours

    “The city shall be allowed to inspect the work at any stage of construction and, in any event, the applicant for the permit shall notify the city when the work is ready for final inspection and before any underground portions are covered.”
  • Off-grid sanitationLimited

    Private sewage disposal inside Nauvoo city limits.

    • Allowed only where public sanitary sewer is unavailable.
    • A city permit, inspection, state compliance, and possible Hancock County health-department requirements apply.
    • Subsurface soil absorption systems are not permitted on lots under 15,000 square feet unless the water and sewer committee and city council approve the written plan.

    minimum lot area for subsurface soil absorption permit: >= 15000 sq ft (A written plan may be approved by the water and sewer committee and city council for a smaller lot.)

    “No permit shall be issued for any private sewage disposal system employing subsurface soil absorption facilities where the area of the lot is less than fifteen thousand (15,000) square feet.”
  • Mandatory utility hookupConditional

    Properties inside Nauvoo city limits served by a private sewage disposal system.

    • When public sewer becomes available, direct connection is required within 90 days.
    • Private septic tanks, cesspools, and similar facilities must then be abandoned, cleaned, and filled with suitable material.
    • The city connection fee is $500 and may be adjusted.

    connection deadline after public sewer availability: 90 days · private-system-to-public-sewer connection fee: 500 USD (May be adjusted from time to time by the city.)

    “At such time as a public sewer becomes available to a property served by a private sewage disposal system, as provided in subsection 3-4-2 D of this chapter, a direct connection shall be made to the public sewer within ninety (90) days after said public sewer becomes available, and any septic tank, cesspools and similar private sewage disposal facilities shall be abandoned, then cleaned, and filled with suitable fill material.”
  • Permit processPublished (with conditions)

    Building permit applications inside Nauvoo city limits.

    • Application must be submitted to the city clerk seven days before the regularly scheduled city council meeting.
    • The building inspector reviews the permit and project site.
    • The streets, buildings and grounds committee reviews the inspector's remarks before city council review.
    • After approval, construction must begin within 90 days; the permit expires 90 days after approval, and 90 days of suspension or abandonment makes it null and void.

    submission lead time: 7 days (Before the regularly scheduled city council meeting) · construction commencement deadline: 90 days (After permit approval)

    “The applicant must complete and submit the application for building permit to the city clerk seven (7) days prior to the regularly scheduled city council meeting.”

Still unanswered

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

  • Owner-builder exemption — Owner-builders performing construction inside Nauvoo city limits.
  • Certificate of occupancy — Certificate-of-occupancy requirements for land inside Nauvoo city limits.
  • Minimum dwelling size — Residential districts inside Nauvoo city limits.
  • Minimum lot size — Residential districts inside Nauvoo city limits.
  • Setbacks — Residential districts inside Nauvoo city limits.
13 more unanswered
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Well permit
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals
  • Permit fees

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 Nauvoo publishes no rule on the point, not that none exists. Hancock County’s page lists the county offices to call.

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