Bolthole Index

Rock Island County, Illinois

Building permits, zoning and septic in Village of Milan, Illinois

Village of Milan, Illinois requires building permits for new buildings, additions and other listed improvements; start with the village Building Inspector.1 Milan reviews building applications for zoning compliance, while Rock Island County Health Department handles private sewage services where municipal sewer is unavailable.23 Milan’s dwelling standards include a 900-square-foot minimum, so a small-house plan needs more than a building-code check.4

At a glance

Building permits
Village Building Inspector; new buildings, additions and listed improvements need building permits.1
Zoning approval
Village staff review land-use and building applications for compliance with Milan zoning.2
Minimum dwelling size
900 square feet for the dwelling types named in Milan’s ordinance; length no more than 4 times width.4
Septic approval
Rock Island County Health Department for private sewage services where municipal sewer is unavailable; obtain plan approval before construction.35
Occupancy approval
Village zoning review and completed-construction inspection precede occupancy approval for new buildings.67
Private wells
Illinois requires a water-well permit before new construction, modification or sealing; ask the county health department about local administration.89

Who to call

Building permits

Village of Milan Building and Inspections

Village building applications, construction inspections and project-specific building-permit questions.

(309) 787-8527

405 East 1st Street Milan, IL 61264

Online permits →

Zoning

Village of Milan Zoning Board of Appeals

Zoning variance petitions and appeals from the Zoning Enforcement Officer’s rulings.

405 East 1st Street Milan, IL 61264

Septic permits

Rock Island County Health Department

County health department contact for Environmental Health, septic systems, septic inspections and well-water testing.

309-793-1955

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

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Do you need a building permit in Village of Milan, IL?

Milan’s Building and Inspections department lists new buildings and additions, decks, garages, pools, water heaters, renovations and electrical, plumbing and HVAC systems among projects requiring building permits.1 For a repair or unusual project, ask the Village Building Inspector to confirm the specific building-permit requirement before ordering materials.1

Milan has adopted the 2021 International Building Code and International Residential Code.10 Village staff also examine building applications for compliance with Milan’s zoning provisions, and a building-permit application doubles as an occupancy-permit application.2 Building approval therefore does not remove the need to satisfy the village’s land-use requirements.2

Who issues building permits in Village of Milan?

Contact the Village of Milan Building Inspector at (309) 787-8527 for building-permit questions and the inspection schedule for your project.1 Milan’s online application system supports submitting applications, uploading plans and documents, tracking submissions and communicating with inspectors and staff.1

After construction begins, Milan performs inspections against the submitted plans and applicable codes; the Building Inspector advises which inspections are required and how to schedule them.1 For zoning variations or appeals from the Zoning Enforcement Officer’s rulings, Milan’s Zoning Board of Appeals is the relevant village body.11 Private sewage services remain with Rock Island County Health Department where municipal sewer service is unavailable.3

Does Village of Milan have zoning and minimum home-size rules?

Milan’s village staff review applications involving land or buildings for compliance with the village zoning title.2 Milan’s dwelling ordinance requires at least 900 square feet for a one-story, story-and-a-half or two-story dwelling, with length no more than 4 times width.4 A proposed dwelling below that floor-area minimum conflicts with the stated Milan standard even if the design could otherwise meet building-code requirements.4

Ask the Village Building Inspector for the parcel’s zoning district and the applicable lot-area, setback, coverage and height schedule before choosing a house footprint.1 Milan’s Zoning Board of Appeals hears petitions for variations to zoning regulations; a variation requires village review rather than an assumption that a small lot is buildable.11

How do septic permits and wells work inside Village of Milan?

For Milan property without current access to municipal sewer service, Rock Island County Health Department provides private sewage consultations and inspections for existing and new septic systems.3 Illinois requires plan approval from the state or applicable local authority before constructing a new private sewage disposal system, with notice at least 48 hours before work begins.5 Ask the health department to confirm the application and inspection arrangements for the Milan address.9

Rock Island County Health Department lists well-water testing among its Environmental Health services.9 Illinois requires a water-well permit before constructing or modifying a well or sealing an abandoned well.8 Ask Milan’s Building Inspector whether municipal water or sewer connection is required for the parcel before budgeting for private systems.1

Can you live in an RV or tiny home in Village of Milan?

We could not confirm a Milan rule allowing residential RV occupancy or temporary camping while a house is built; ask the Village Building Inspector about the proposed use and duration before buying an RV for that purpose.1 Milan’s occupancy provisions require zoning-officer review before vacant land is used and before new buildings or additions are occupied.6

For a tiny home proposed as a dwelling, Milan’s stated minimum for a one-story, story-and-a-half or two-story dwelling is 900 square feet.4 We could not confirm a separate Milan tiny-home or accessory-dwelling exception; ask the village about your precise design.1 Illinois approval of compost toilets for human waste still requires conventional private sewage disposal for other domestic wastes, so a compost toilet alone does not resolve wastewater disposal.12

What are the steps to build a home in Village of Milan?

  1. Ask Milan’s Building Inspector to review the proposed project and identify the required building applications; village staff examine applications for zoning compliance.12
  2. Establish the wastewater plan: contact Rock Island County Health Department if municipal sewer is unavailable, and obtain private sewage plan approval before construction.35
  3. Submit the building application and plans through Milan’s online system, and arrange the inspections the Building Inspector requires as work progresses.1
  4. Finish construction and obtain the building inspector’s certification of conformity with the approved plans before occupancy approval for the new building.7

Milan’s building-permit application is also treated as an occupancy-permit application, but completing the application does not authorize moving into an unfinished home.27

What should you check before buying land in Village of Milan?

Ask Milan’s zoning office whether the parcel falls within the ordinance’s “critical area”: activities there require concurrent applications to Big Island and Milan, and approval requires agreement from both.13 Illinois floodway construction rules may also require state approval where the applicable stream thresholds are met; a village building application does not replace that review.14

For access involving work in a state-maintained roadway’s right-of-way, obtain an IDOT highway permit before work begins.15 For land outside Milan village limits, use the Rock Island County guide: the county building and zoning department’s authority applies only to unincorporated property.16 Rock Island County’s effective property tax rate is 2.3%; that county-level figure is context, not a quoted tax rate for a particular Milan parcel.17

Watch-outs

  • Milan’s 900-square-foot dwelling minimum can rule out a proposed small house before detailed building plans are drawn.4
  • Milan occupancy approval for new construction requires completed work and inspection certification; ask the village about temporary approval before planning to move in early.7
  • We could not confirm a Milan owner-builder exemption; ask the Village Building Inspector about building applications and trade requirements rather than assuming homeowner work is exempt.1
  • Milan critical-area development requires joint Big Island and Milan approval, and either authority may deny the application.13

Sources

  1. Village of Milan Building and Inspections (milanil.org)
  2. 11-3-3: Building And Occupancy Permits (Village of Milan), quoted and re-checked
  3. Water and Sewage, quoted and re-checked
  4. 11-4-8: Minimum Ground Floor Area For Dwellings (Village of Milan), quoted and re-checked
  5. 77 Ill. Adm. Code 905.190 Installation Approval (Illinois statewide rule), quoted and re-checked
  6. 11-3-3: Building And Occupancy Permits (Village of Milan), quoted and re-checked
  7. 11-3-3: Building And Occupancy Permits (Village of Milan), quoted and re-checked
  8. 77 Ill. Admin. Code 920.130, Water Well Permit Requirements (Illinois statewide rule), quoted and re-checked
  9. Rock Island County Health Department (rockislandcountyil.gov)
  10. 10-2-1: Adoption Of Codes (Village of Milan), quoted and re-checked
  11. Village of Milan Zoning Board of Appeals (milanil.org)
  12. 77 Ill. Adm. Code 905.130 Human Waste Disposal (Illinois statewide rule), quoted and re-checked
  13. 8-4-3: Application For Permit (Village of Milan), quoted and re-checked
  14. Permit Program (Illinois statewide rule), quoted and re-checked
  15. Highway Permits (Illinois statewide rule), quoted and re-checked
  16. Zoning & Building Safety, quoted and re-checked
  17. Effective property tax rate: Bolthole Index county data

Written October 12, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for Village of Milan

Village of Milan’s own rules

  • Building code adoptedAdopted

    Building construction and related work inside Milan village.

    • The code section also adopts the 2021 IEBC, IRC, IPMC, IECC, IFC, IFGC, IMC, IPC and ISPSC; 2020 NEC; 2018 IAC; and 2014 ILPC.
    • Ordinance 1776 amended the section on 11-6-2023.

    building code edition: 2021 IBC · residential code edition: 2021 IRC

    “There are hereby adopted for the village of Milan the following codes and their appendices: 2021 International building code (IBC) 2021 International existing building code (IEBC) 2021 International residential code (IRC)”
  • InspectionsRequired

    Buildings or portions constructed after the effective date of the occupancy-permit provision inside Milan village.

    • Construction must be completed.
    • The building inspector must inspect and certify conformity with the plans and specifications on which the building permit was based.
    • A temporary certificate may be issued for no more than six months during completion or partial occupancy.

    temporary certificate maximum period: <= 6 months (during completion of an addition or partial occupancy)

    “No occupancy permit for a building, or portion thereof, constructed after the effective date hereof, shall be issued until construction has been completed and the premises inspected and certified by the building inspector to be in conformity with the plans and specifications upon which the building permit was based.”
  • Certificate of occupancyRequired

    New buildings, additions, vacant land uses, and changes of use inside Milan village.

    • No building or addition constructed after the effective date may be occupied until an occupancy permit is reviewed by the zoning officer.
    • Vacant land may not be used until an occupancy permit is reviewed.
    • A change in use requires an occupancy permit except a change from one permitted use to another similar permitted use.
    • Temporary certificates may be issued for up to six months.
    “No building, or addition thereto, constructed after the effective date hereof, and no addition to a previously existing building, shall be occupied, and no land vacant on the effective date hereof shall be used for any purpose, until an occupancy permit has been reviewed by the zoning officer.”
  • Minimum dwelling sizeSpecified

    One-story, story-and-a-half, and two-story dwellings inside Milan village.

    • The dwelling must meet the minimum floor-area standards in the adopted 2009 International Building Code.
    • The length may be no more than four times the width.

    minimum floor area: >= 900 square feet · length-to-width ratio: <= 4 times

    “A one-story dwelling, or a story and a half, or two-story dwelling shall meet the minimum floor area standards in the adopted edition of the 2009 international building code and be at least nine hundred (900) square feet, with the length being no more than four (4) times the width.”
  • Building in a floodplainRequired

    Activities within the critical area inside Milan village.

    • Applications must be submitted concurrently to Big Island and Milan.
    • The application is reviewed case by case.
    • Either Big Island or Milan may deny the application.
    • Approval or conditional approval requires joint approval by both Big Island and Milan.
    • Applications are available at Milan's zoning department at 405 East First Street, Milan, Illinois.
    • The provision cites Ordinance 1575, adopted 1-7-2013.
    “Applications for a permit to authorize any activities within the "critical area" defined herein must be submitted concurrently to Big Island and to Milan to be processed and to be reviewed on a case by case basis.”
  • Permit processPartial

    Building and occupancy permitting inside Milan village.

    • Permit applications are examined by appropriate village staff for zoning compliance.
    • Every building-permit application is deemed an occupancy-permit application.
    • Reasons for refusal must be forwarded no later than 14 days after the occupancy-permit request.

    written refusal deadline: <= 14 days (after request for occupancy permit)

    “Except as hereinafter provided, no permit pertaining to the use of land or buildings shall be issued by any officer, department, or employee of the village unless the application for such permit has been examined by the appropriate village staff, indicating that the proposed building or structure complies with all the provisions of this title.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Village of Milan or Rock Island County directly.

  • Building permit — Building permits inside Milan village.
  • Owner-builder exemption — Owner-builders inside Milan village.
  • Minimum lot size — Lots inside Milan village.
  • Setbacks — Lots and structures inside Milan village.
  • Lot coverage — Lots inside Milan village.
15 more unanswered
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • 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 Village of Milan publishes no rule on the point, not that none exists. Rock Island County’s page lists the county offices to call.

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