House Bill 2386, also known as Senate Bill 2191, amends the Tennessee Code Annotated to establish a framework for cost-sharing agreements related to offsite public infrastructure improvements necessitated by private development projects. The bill introduces definitions for key terms such as "developer," "development," "offsite public infrastructure improvement," "political subdivision," and "public infrastructure." It allows political subdivisions, such as counties and municipalities, to require developers to either construct or fund offsite public infrastructure improvements that are deemed necessary for future development, with the cost-sharing arrangement based on the development's impact on public infrastructure.

Additionally, the bill stipulates that political subdivisions have a 60-day period to determine the necessity of such improvements after a developer requests approval. If an agreement on the cost-sharing arrangement cannot be reached, the developer can appeal to the Tennessee board of utility regulation for a determination. The political subdivision's share of the costs can be funded through various means, including impact fees from other developments, bond proceeds, or unencumbered tax revenues. This legislation aims to facilitate infrastructure development while ensuring that costs are equitably shared between developers and local governments.