Brentwood City Government: Structure and Williamson County Relationship

Brentwood operates as a municipality within Williamson County, Tennessee, functioning under a council-manager form of government distinct from the county's own administrative apparatus. The city's governmental structure, its jurisdictional boundaries, and its layered relationship with Williamson County shape how services are delivered to approximately 45,000 residents. Understanding this dual-layer framework is essential for residents, contractors, developers, and researchers navigating permitting, taxation, elections, and public services in the Brentwood area.

Definition and Scope

Brentwood is an incorporated municipality chartered under Tennessee state law, governed by Title 6 of the Tennessee Code Annotated covering municipal corporations. The city operates under a council-manager model — a structure in which a professionally appointed city manager holds executive administrative authority while an elected city commission sets policy. This contrasts with the mayor-council model used in cities such as Memphis, where an elected mayor functions as the chief executive officer.

The City of Brentwood is geographically located in Williamson County and is subordinate to state authority but operates independently of county governance for the purposes of municipal services, zoning, and local ordinances. Brentwood's incorporation means it levies its own property tax rate, maintains its own police department, and administers its own planning and zoning processes — functions that unincorporated Williamson County residents access through the county government instead.

This page covers the governmental structure of Brentwood as a city, its formal and functional relationship with Williamson County, and the jurisdictional boundaries between city and county authority. It does not cover unincorporated Williamson County services, the county's school district administration, or state-level agencies operating within the city's footprint. Tennessee's broader state government structure is documented at /index.

How It Works

Brentwood's council-manager government is structured as follows:

  1. Board of Commissioners — A five-member elected board holds legislative authority. Commissioners serve 4-year staggered terms and are elected at-large, meaning no district-based representation divides the electorate.
  2. City Manager — Appointed by the Board of Commissioners, the city manager oversees day-to-day municipal operations, department heads, and budget execution. The city manager is not elected and serves at the pleasure of the board.
  3. Mayor and Vice Mayor — Designated from within the Board of Commissioners, the mayor serves a ceremonial and procedural leadership role rather than a separate executive function. This is a formal contrast to strong-mayor systems.
  4. Municipal Departments — Core departments include Public Works, Police, Planning and Codes, Parks and Recreation, and Finance. Each reports to the city manager.
  5. City Court — Brentwood maintains a municipal court with jurisdiction over ordinance violations and certain traffic matters within city limits.

The city's fiscal year runs October 1 through September 30 (City of Brentwood, Tennessee — Annual Budget), and the city publishes an annual budget document reflecting revenues from property taxes, sales taxes (shared with the state under Tennessee's revenue-sharing formula), and fees for services.

Williamson County's parallel structure encompasses county-wide services that Brentwood residents also receive: the Williamson County Sheriff's Office provides jail services and county-wide law enforcement outside city limits, the Williamson County Schools district operates public schools within Brentwood (not the city itself), and the county Election Commission administers all elections including Brentwood's municipal contests.

Common Scenarios

Zoning and Development Permits
A property within Brentwood city limits falls under the city's zoning ordinances and the Brentwood Planning Commission. An adjacent parcel outside city limits — even in close proximity — falls under Williamson County's zoning authority. Developers must identify which jurisdiction controls a given parcel before submitting any application.

Taxation
Brentwood residents pay both a city property tax and a Williamson County property tax. As of the most recent publicly posted rate schedules on the City of Brentwood Finance page, these are assessed and billed separately, though Williamson County's Assessor of Property determines property values for both jurisdictions (Williamson County Assessor of Property).

Public Schools
The Williamson County Schools district, not the City of Brentwood, operates public schools serving Brentwood students. This is a jurisdictional boundary that often surprises new residents: the city has no authority over school governance, curriculum, or school board elections. School board members are elected countywide or by district under the county system.

Law Enforcement
The Brentwood Police Department holds primary law enforcement jurisdiction within city limits. The Williamson County Sheriff's Office retains concurrent jurisdiction and handles county detention. For context on broader Tennessee public safety governance, see the Tennessee Department of Safety and Homeland Security.

Decision Boundaries

The core jurisdictional distinction resolves around incorporation status:

Function City of Brentwood Williamson County
Zoning / Land Use City Planning Commission County Planning Dept. (outside city)
Property Tax Assessment Williamson County Assessor (for both) Williamson County Assessor
Police Services Brentwood Police Department Sheriff's Office (county/unincorporated)
Public Schools N/A — County School District Williamson County Schools
Elections Administration County Election Commission County Election Commission
Road Maintenance City Public Works (city roads) TDOT / County (state and county roads)

Annexation is the mechanism by which Brentwood can extend city limits, bringing previously unincorporated Williamson County land under city jurisdiction. Tennessee's annexation statutes (T.C.A. § 6-51-101 et seq.) govern this process, requiring notification, study periods, and in some cases a referendum among affected property owners. Once annexed, a parcel becomes subject to city ordinances, city taxes, and city services, while county overlapping services (such as the school district) may remain unchanged.

The Franklin, Tennessee government — also located in Williamson County — presents a direct comparison case: Franklin operates under a mayor-alderman structure, a contrast to Brentwood's council-manager model, yet both cities coexist within the same county framework and share the same county-level services described above.

References