Nashville, TN Building Safety: Fire Sprinkler Requirements (2026)
Key Facts
- Townhouse sprinklers
- Not required
- Governing code
- 2024 IRC as amended
- Fire wall required
- 2-hour rated separation
- Enforcing agency
- Dept. of Codes Administration
Summary
Metro Nashville amended the residential code so townhouses are exempt from automatic fire sprinkler systems, unlike the model code default.
R309.1 Townhouse automatic fire sprinkler systems. A townhouse shall be considered a separate building with independent exterior walls and shall be separated by a two-hour fire-resistance-rated wall assembly. A townhouse shall be built according to local and statewide adopted building codes; provided, however, a fire sprinkler system shall not be required for a townhouse. For the purposes of this Code, "townhouse" means a single family dwelling unit constructed in a group of three (3) or more attached units that extends from foundation to roof, not more than three (3) stories in height, with a separate means of egress, and an open space or public way on at least two (2) sides.
K.Section R309.2 of the 2024 Edition of the International Residential Code for One- and Two-Family Dwellings is hereby amended by deleting Section R309.2 in its entirety.L.Section 310.2.2 of the 2024 Edition of the International Residential Code for One- and Two-Family Dwellings is hereby amended by adding the following new exception: Exception 3. The interconnection and hardwiring of smoke alarms in existing areas shall not be required where the alterations or repairs do not result in the removal of interior walls or ceiling finishes exposing the structure.
M.Chapter 3 of the 2024 Edition of the International Residential Code for One- and Two-Family Dwellings is hereby amended by adding the following new section R333 HOUSE MOVING:
SECTION R333.1
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 53 | Charter: Republication 9).
Full Breakdown
Metro's amendments to the 2024 International Residential Code create a new Section R309.1 stating that a townhouse, a single-family unit in a group of three or more attached units, foundation to roof, no more than three stories, with a separate exit and open space on at least two sides, must be separated by a two-hour fire-rated wall but is not required to have a fire sprinkler system. The amendment also deletes R309.2 entirely, removing whatever sprinkler-related provision followed it in the base code. The requirement applies within Metro's Codes Administration jurisdiction; the six satellite cities (Belle Meade, Berry Hill, Forest Hills, Goodlettsville, Oak Hill, Ridgetop) enforce their own adopted codes.
Violations & Fines
No sprinkler-specific penalty applies since none is required for townhouses; general building code violations run through the Metropolitan Board of Fire and Building Code Appeals and the Department of Codes Administration under Metro Code Title 16 enforcement provisions.
Frequently Asked Questions
Do new townhouses in Nashville need fire sprinklers?
Does this exemption cover apartment buildings too?
Sources & Official References
Other rules in Nashville
Compare Nashville to another location·View the Tennessee building safety overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.