Neighborhood Improvement Districts (NID)

NID Assessment Roll

2020 NID Assessment Roll (PDF) 

Please note: To find a property when you open the PDF, use CTRL-F on your keyboard to bring up a Search field.


The goal of this program is to assist residents of St. Charles County to help improve their quality of life through the extension of public facilities or services, such as, streets, sewers, sidewalks, etc. This is accomplished through a cooperative effort between the county and residents within a proposed district.

Neighborhood Improvement District Act

The Neighborhood Improvement District Act, Sections 67.453 through 67.475 of the Revised Statutes of Missouri, was adopted by the Missouri General Assembly in 1990 for the purpose of stimulating development of public improvements that in turn will stimulate private development.

The act provides a method by which political subdivisions of the State may issue general obligation bonds upon a petition or vote of the residents within an area known as a neighborhood improvement district, which would be benefited by the public improvements and would be specially assessed to reimburse the political subdivision for its costs.


A Neighborhood Improvement District is formed as a cooperative effort between the county and residents within a proposed district. The county’s role is to coordinate efforts and provide engineering, inspection, project management and financial support. Communities that utilize this program are given the opportunity to pay for the improvement as either a lump sum or through special assessments, which can be financed for 10 or 20 years.

Minimum Public Standards for Upgrading Private Street & Storm Sewer

The minimum public standards for upgrading private streets and storm sewers in subdivisions that were platted prior to November 3, 2003 and that have lots one (1) acre or larger in size, are listed in Section 410.405 of the County Codes. Private streets and storm sewers for all other subdivisions and non-subdivision tracts would need to be upgraded to the current public standards in order to utilize the NID program to finance and construct the project.

Steps Summary

The following provides a summary of the steps required:

Define project scope and boundaries of the proposed district

  • Determine approximate cost
  • Circulate petition (2/3 support required for an election, 100% support election not required)
  • Election, if required (4/7 support required to pass)
  • Enact county ordinance to establish the district boundaries, order preparation of plans and specifications, and that a public hearing be held;
  • Hold public hearing
  • Enact county ordinance to accept plans and specifications, set forth a proposed assessment roll, order improvements, and authorize interim financing
  • Advertise for construction proposals
  • County Council receive and approve proposals
  • Construct
  • Enact county resolution that orders a special assessment


Please contact the St. Charles County Development Review Division at 636-949-1814 or email NID.