Environmental Rules in Franklin, TN

If you live in Franklin or are thinking about moving there, environmental rules are one of those things you probably won't think about until they affect you directly. Franklin has 4 specific rules on the books covering different aspects of environmental rules, and some of them might surprise you.

Flood Elevation Requirements

Franklin's 2026 zoning ordinance requires new or substantially improved homes in AE flood zones to elevate the lowest floor at least three feet above the base flood elevation, one foot more than FEMA's minimum.

Key details: Residential freeboard: 3 ft above BFE. Nonresidential freeboard: 1 ft above BFE. Zone type: AE mapped flood zones. Enforcing official: Zoning and Floodplain Administrator. Permit required: floodplain development permit.

Building or substantially improving below the required elevation without a floodplain development permit is a violation; the City presumes noncompliance absent an elevation certificate and can require corrective elevation work or floodproofing.

Flood Zones

Franklin requires a floodplain development permit before any construction, fill, or land disturbance in a FEMA-mapped special flood hazard area.

Key details: Permit required: Before any development in flood hazard area. Issuing office: City floodplain administrator. Elevation rule: Lowest floor above base flood elevation. Floodway (FWO): Must stay non-buildable open space. Penalty: Misdemeanor, separate offense per day.

Building without a floodplain permit or below required elevation is a misdemeanor; each day of violation is a separate offense, plus city costs and expenses.

Erosion Control

Every construction site in Franklin, regardless of size, must have erosion prevention and sediment control (EPSC) measures installed and operating before work begins, under the city's stormwater management ordinance.

Key details: Applies to: All construction sites, any size. Before grading starts: EPSC measures installed and operational. Standard used: Most stringent of state/city rules. Inlet protection: Required on every construction plan. Enforcement: Stop-work order for violations.

Grading or building before EPSC measures are installed and inspector-approved, or letting sediment leave a site, exposes the permittee to enforcement action, including a stop-work order, under § 23-111.

Stormwater Management

Franklin requires new development to size stormwater systems to specific storm-return standards: catch basins for the 10-year storm, bridges and culverts for the 50-year storm, and emergency bypass for a 100-year flood.

Key details: Catch basins: Sized for 10-year storm. Bridges/culverts: Sized for 50-year storm. Road flooding limit: Max 3 inches, half-width, 100-yr event. Permit required: Stormwater management permit before construction. Enforced by: Franklin city engineer.

Building or grading without an approved stormwater management permit, or a design that fails the storm-return standards, can trigger a stop-work order and civil penalties from the city engineer.

The Bottom Line

Franklin's environmental rules rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Franklin is broadly strict or permissive.

Keep in mind that Franklin can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.