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Franklin, TN Building Setbacks & Zoning: Structure Height Limits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Principal building height cap
2 1/2 stories
Accessory structure height cap
capped at principal building height
Minor accessory structure cap
1 story
Minimum lot size
30,000 square feet
Front/side/rear setbacks
60 ft / 25 ft / 50 ft
Effective date
January 13, 2026

Summary

In Franklin's R1 (Residential 1) zoning district, a principal house is capped at 2 1/2 stories under the 2026 Franklin Zoning Ordinance. Accessory structures can't exceed the height of the principal building on the same lot, and minor accessory structures are capped at one story.

3.4.5 Dimensional Standards The following dimensional standards are required: ...Principal Building Setbacks Minimum: Front Yard 60 feet, Side Yard 25 feet, Rear Yard 50 feet...Building Height Maximum: Principal Building 2 1/2 stories; Accessory Structure Shall not exceed the height of the principal building; Minor Accessory Structure 1 Story...Alternate Standards: For lots in recorded subdivisions, if there are different dimensional standards on the final plat, then those standards on the final plat shall govern. When there are platted front yard setbacks but no side or rear yard setbacks, then 10-foot side and 25-foot rear yard setbacks shall apply

Full Breakdown

5. " That height standard sits alongside the district's other minimums: a 30,000-square-foot minimum lot size, 100-foot minimum lot width, and an 80-foot minimum front lot line (reducible to 30 feet on a cul-de-sac turning radius), plus a 60-foot front setback, 25-foot side setback and 50-foot rear setback for the principal building. 5's "Alternate Standards" clause layers a plat-based override on top of the district table: for lots in recorded subdivisions, where the final plat carries different dimensional standards, "those standards on the final plat shall govern," and where a plat sets a front yard setback but no side or rear yard setback, a 10-foot side and 25-foot rear yard setback apply by default.

Because the R1 standards are expressed as a district-wide dimensional table rather than a single height sentence, a builder checking height also has to check whether an older, already-recorded subdivision plat displaces the ordinance's own 2 1/2-story cap. The 2026 ordinance took effect January 13, 2026, replacing the pre-2026 zoning code; any height figure sourced to the prior ordinance number is superseded and should not be relied on for a current permit.

Violations & Fines

Franklin's Building and Neighborhood Services Department reviews building permit applications against the Section 3.4.5 dimensional table before issuing a permit; a plan set showing a principal building over 2 1/2 stories, or an accessory structure taller than the house it serves, is rejected at plan review rather than caught after construction. A structure built over height without a recorded-plat override on file is a zoning-ordinance violation subject to the city's standard zoning enforcement and stop-work process.

Frequently Asked Questions

How tall can a house be in Franklin's R1 district?
The Franklin Zoning Ordinance caps a principal building in R1 at 2 1/2 stories under Section 3.4.5's dimensional-standards table. Accessory structures on the same lot can't be taller than the house, and minor accessory structures are limited to a single story.
Can an older subdivision plat set a different height or setback in R1?
Yes. Section 3.4.5's Alternate Standards clause says that for lots in recorded subdivisions, if the final plat carries different dimensional standards, those plat standards govern over the district table, including cases where the plat set a front setback but left side or rear setbacks blank.
Does the R1 height limit apply to accessory buildings like a detached garage?
Yes, but differently. Section 3.4.5 caps a full accessory structure at the height of the principal building on the lot, while a minor accessory structure (such as a shed) is capped at one story regardless of the house's height.

Sources & Official References

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