House Bill 1549 seeks to modernize the governance structure of the Town of Greeneville by replacing the existing legal framework established in Chapter 563 of the Acts of 1903. The bill renames the governing body from the Board of Mayor and Aldermen to the City Council and changes the title of Alderman to Council Member. It extends the terms of office for both the Mayor and Council Members from two years to four years, with the first election under this new structure set for September 2023. The bill also clarifies the Mayor's voting rights in case of a tie and establishes a two-ward system for the town.

In addition to governance changes, the bill outlines the powers and responsibilities of the Mayor, City Council, and City Manager, including financial management and public health regulations. It introduces the Greeneville Water Commission, modifies the election schedule for the Greeneville Board of Education, and emphasizes financial accountability by requiring appropriations to align with estimates. The bill mandates that all warrants for payment specify their purpose and establishes individual liability for financial decisions exceeding current tax amounts. Existing ordinances will remain in effect until modified or repealed, and the act requires a two-thirds approval from the legislative body of Greeneville to take effect.