Annexations and Rezoning


Properties that are contiguous to St. Clair City Limits may be annexed in accordance to Appendix A. - Zoning >> Article VII. - General Provisions >> Section J. - Annexation of new territories and all applicable state laws.

Sometimes annexations are initiated by the City. The City initiates an annexation when there is a property that is surrounded by properties that are within City limits, or the City may have someone that expresses interest in developing a property that is not located within City limits but is contiguous to the City limits; or could be made contiguous by the annexation of other properties through annexation agreements. The City will contact the property owner's when it is interested in pursuing such annexations. 

Property owners can also request to be annexed because of their desire for City services (city water, sewer, police and code enforcement services). If you are interested in annexing, please complete the Annexation Petition Application and submit the completed application to the City's Code Official. 

Annexation Zoning Classification

The City of St. Clair has Zoning Ordinances and districts established in accordance to the City of St. Clair's Zoning District Map that are different than Franklin County's Ordinances and zoning districts. Therefore, the zoning classification of a property prior to annexation will be different from the zoning classification of the property after annexation. At the time of annexation, a rezoning application will also need to be completed and submitted so that a rezoning process can occur, and you will have a chance to request a certain zoning classification. By default, if a rezoning does not occur, the property is automatically given an A-1 - Agricultural District Zoning Classification at the time of Annexation. Keep in mind that if a certain zoning classification is requested, that does not mean that it will be the zoning classification that is applied. There are several factors that must be taken into consideration for a rezoning request.

Factors for Consideration

The City's Future Land Use Map of the Comprehensive Plan will guide the City’s decision, as well as neighboring property zoning classifications and current and proposed uses, transportation access, traffic impact, visibility; use-related noise, lighting intensity, and vibrations may also be factors.

Rezoning of properties already within City Limits

Every property within St. Clair City Limits is assigned a certain Zoning District Classification. A rezoning takes place when the City Council approves the request of the property owner to change the existing property’s zoning classification from one type of zoning classification to another.  Again, there are several factors that must be taken into consideration when a certain zoning classification is requested as stated above.

Rezoning Process

After completing and submitting a Rezoning Application (along with the required fees and attachments as noted on the form) to the City Code Official, the property owner will go through several steps:

  • First, the rezoning process will begin with a mandatory pre-application conference with City staff to discuss the specifics of your proposed application and to answer any questions you may have on the process. To set up your pre-application conference, please contact the City Code Official as noted at the bottom of this page.
  • Second, at your pre-application conference, in most cases, we will advise you to hold a neighborhood meeting so that your neighbors can become familiar with your request before a Planning and Zoning Commission Public Hearing and meeting takes place. This is a very important step so that you can get a feel for opposition or support and will have a chance to prepare for any noted concerns.  
  • Third, the City stall will prepare a staff report summarizing the request along with a recommendation regarding the proposed change. The City’s Planning and Zoning Commission will review the staff report and hold a public hearing about the request, during which people for or against the proposed change may comment on the proposal. After the public hearing, the City’s Planning and Zoning Commission will hold a meeting to discuss the proposal and may make a recommendation to the City Council to approve or deny the proposal.
  • Fourth, the City Council will hold a public hearing regarding the request and after such hearing will consider the Planning and Zoning Commission’s recommendation and may decide whether to give a first reading to an ordinance that would rezone the property.
  • Fifth, at the time of the first request, if the ordinance has already been prepared, the City Council may decide to give the final reading to the ordinance rezoning the property or they may decide to make the final reading at another meeting. Generally, the City Council will not have a substantive discussion about the request at the second meeting unless some issues were left unresolved during the first reading.

Once the City Council has approved the request by ordinance and the Mayor has signed the ordinance, the property is legally rezoned to the applied zoning classification and the City’s Zoning District Map will be updated with the appropriate zoning classification. After which you may utilize the property based on the applied zoning classification in accordance with Appendix A – Zoning >> Article V. – Use Regulations by Zoning District.

If you have any questions regarding Annexations or Rezoning or want to set up a pre-application conference, please feel free to contact the City of St. Clair Code Official: Craig Sullivan by email: or by phone at: 636-629-0333 ext. 200.   

Updated official name 01/25/2023

ST. CLAIR, MO 63077
Ph: 636-629-0333
Fax: 636-629-6467