Applications, Processes, Plans, and Codes

The development process is complicated - but it is complexity with a purpose. We must meet local, state, and federal regulations while ensuring that each step along the way is consistent with O’Fallon’s goals and policies. Our goal is to help you navigate your way through the process and emerge with your subdivision, building permit, zoning, or certificate of occupancy. This page offers a general overview of the process. For more specific information, please call us at 618-624-4500 x 4.

Click here for a link to the fee schedule.

A list of the development codes is presented at the bottom of this listing.

Miscellaneous Permits

The Planning & Zoning Division checks setbacks, height, lot coverage and other requirements when processing building permits & sign permits.
Business Registration Application
All businesses within O'Fallon are required to have an up-to-date Business Registration filed with the City Clerk.
Required when a home-based business is proposed within the City that is required to be registered with the State.
Required when a home-based daycare is proposed within the City.
Sidewalk Dining Permit Allows restaurants to use the public sidewalk for dining
Required for outdoor events for promotional purposes, large picnics, carnivals, or festivals. Click here to go to the Code of Ordinances for Chapter 118: Special Events.



Chapter 158: Zoning, Article 6: Planned uses of the Code of Ordinances requires certain uses to be processed as a Planned Use. Most new commercial, office, and residential subdivision development will require this process which includes a hearing with the Planning Comission and approval through City Council. We encourage each applicant to prepare a conceptual plan and schedule a meeting with City staff prior to formal submission of development plans.
A zoning map amendment is a zoning district change for a parcel of land.
A landowner shall obtain a Special Use Permit prior to the issuance of a building permit for any use listed as a "special use" in the applicable zoning district or for any use otherwise requiring a Special Use Permit by Chapter 158: Zoning, Article 5: Special Uses, of the Code of Ordinances.



Required when a proposed project does not conform to the regulations as set in Chapter 158: Zoning, Article 2: Zoning District Regulations, Section 158.036 of the Code of Ordinances.
Required when proposed signage does not conform to the regulations as set in Chapter 158: Zoning, Article 8: Signs, of the Code of Ordinances.



This gives a general overview of the steps, from submittal to the approval and recording stages, that the various plats will go through.
For Subdivisions of six (6) lots or less, the Minor Plat must receive approval through City Council
This packet provides guidelines for the preliminary design and platting of subdivisions within 1.5 miles of the City of O'Fallon. If rezoning is done through the City, a subdivision must simultaneously proceed through the Planned Use Process. Both must receive approval through City Council.
We encourage each applicant to prepare a conceptual plan and schedule a meeting with City staff prior to formal submission of preliminary subdivision or development plans.
The Final Plat nails down exact lot and easement locations. Final plats are typically done before the Final Site Plans in commercial areas but after the Final Site Plan in residential areas. Final plats must be approved by the City Council and filed with St. Clair County.
The City has implemented geographical information systems (GIS) technologies to store, manage, and maintain spatially-related (geographic) data. As a result, all Developers shall submit digital plans in accordance with these standards.


Site Development

Required filing fees for various development filings (subdivisions, rezonings, variances, etc...) These fees are effective Jan 1, 2010.
Engineering Site Plan Review Fee Table, Payment Responsibility Form, and Sample Fee Calculations.  The Engineering Site Plan Review Fee Schedule has been revised and is effective as of April 4, 2016.
The Preliminary Site Plan (also referred to as Planned Use or Planned Development) contains more detailed information about a specific site plan including building location, preliminary landscaping, building elevations, and preliminary utility alignments. Preliminary Site Plans must be heard at Planning Commission and City Council.
The Final Site Plan/Civil Construction Documents clarify the details of the Planned Development/Preliminary Site Plan such as final site layout, number of dwelling units (houses, apartments, or condos), building elevations, photometrics, and landscaping. Civil Construction Documents detail how underground structure and roadways will be constructed to city standards. These include detailed grading and erosion control plans, stormwater plans and calculations, detailed roadway construction plans, and utility plans. The Construction Documents are approved administratively.
Site Development Checklist and Grading Permit Application
Required for any installation or construction of public infrastructure, including any associated grading, excavation or filling, and construction of monuments, streets, storm sewers and other drainage appurtenances, stormwater detention and drainage, public utilities, sanitary sewers, street markers, sidewalks, and/or other development and subdivision improvements.


Review Process

Annexations must be heard at City Council. Property annexed to the city will automatically attain the zoning district classification most similar to the district one currently held with the County. In all other circumstances, a rezoning request can be processed simultaneously with the annexation petition.
Schedule of Planning Commission and Zoning Hearing Officer Meetings for Calendar Year with Filing Deadlines


City Codes, Plans, and Ordinances

The City’s Zoning Ordinance provides rules and regulations on development within the City. The Zoning Ordinance includes parking, landscaping, zone district, and other regulations for development.
The Comprehensive Plan is a tool used to guide growth and development within the City.
Subdivision and Development Control Ordinance
Building Ordinances, Codes & Regulations
Environmental/Landscape Plan This plan is intended to create a coherent set of policies that will adequately guide development of the built landscape and protect important environmental resources for future generations in O'Fallon.
The Commercial Design Handbook is a technical manual created to articulate the community expectations and standards established by the O’Fallon City Council.  The Handbook was created by collaboration of architects, engineers, developers, and the City Council.
Residential or Commercial Occupancy Permit Inspections. An Occupancy Permit is required to be in place when there is a change of ownership or occupancy.
Residential property owners are required to obtain a Residential Renter License for each of their rental units.
Addresses development concerns in floodplain areas.
The Bicycle Facilities Plan identifies and prioritizes a series of trail and on-street and trail improvements to facilitate bicycle usage and to meet present and future needs.
Map that accompanies the 2005 Bicycle Facilities Plan
SAFB Bicycle & Pedestrian Commuter Plan (2013) The objective of this plan was to identify the most desirable routes for walking and biking to Scott Air Force Base from surrounding communities. This was a joint effort between SAFB, O'Fallon, Shiloh, and Mascoutah.
Parks Master Plan (2013) The primary focus of this update is to identify major upgrades at existing parks, identify new park land needs and new facility needs throughout the City's park system.
Strategic Plan (2013) A five-year vision for the city outlining major projects and priorities.
Green Mount Medical Campus Sub-Area Plan Added as an amendment to the Comprehensive Plan on November 21, 2011 through Ordinance 3735
Downtown O'Fallon Area Action Plan (2015) Completed in 2015, this plan provides guidance on the actions the City will take over several years to continue the positive momentum Downtown. This plan also contains other information such as community survey results, market demographics, and data on retail spending by category.