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Smyrna, TN Building Safety: Plumbing Permits (2026)

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

Key Facts

Adopted code
2024 International Plumbing Code
Adopting ordinance
Ord. No. 26-13, March 10, 2026
Water service pipe (Section 603.1)
1 inch in lieu of ¾
Roof extension (Section 903.1.1)
8 inches
Sewer depth (Section 305.4.1)
12 inserted in both locations
Fee refunds (Section 106.6.3)
100% inserted in subsections 2 and 3

Summary

The Town of Smyrna, Tennessee, adopts the 2024 International Plumbing Code with local amendments: 100% in the permit fee refund section, a sewer depth of 12, a water service pipe of 1 inch in lieu of ¾, and an 8 inch roof extension. Violations are penalized under the general penalty provision.

The International Plumbing Code, 2024 edition, and modifications thereto, is hereby adopted and incorporated by reference as part of this municipal code, and is hereinafter referred to as "the plumbing code." ... (2) Section 106.6.3 Fee refunds. Insert "100%" in lieu of "A[Specify percentage]" in subsection 2 and subsection 3. (3)Section 305.4.1 Sewer depth. Insert "12" in lieu of "[NUMBER]" in both locations.(4)Section 603.1 Size of water service pipe. Insert "1 inch in lieu of ¾."(5)Section 903.1.1 Roof extension. Insert "8 inches" in lieu of "[NUMBER]." ... A violation of any provision of this chapter shall subject the offender to a penalty under the general penalty provision of this code. Each day an offense occurs constitutes a separate violation.

Full Breakdown

Title 12, Chapter 5 of the Smyrna Municipal Code adopts the International Plumbing Code, 2024 edition, and modifications thereto, by reference as part of the municipal code, and calls it "the plumbing code" (§ 12-501). The Town Council enacted it with the rest of the new Title 12 in Ord. No. 26-13, adopted March 10, 2026, which repealed the former Title 12.

Section 12-502 lists the local modifications, each of which fills in a blank the model code leaves for the jurisdiction. Section 101.1 Title inserts "Town of Smyrna, TN" in place of the jurisdiction name. Section 106.6.3 Fee refunds inserts "100%" in lieu of the blank percentage in subsections 2 and 3. Section 305.4.1 Sewer depth inserts "12" in both locations. Section 603.1 Size of water service pipe inserts "1 inch in lieu of ¾." Section 903.1.1 Roof extension inserts "8 inches" in place of the blank number.

The residential code chapter carries matching entries for homes. Under § 12-602(20), Section P2603.5.1 Sewer depth replaces [NUMBER] with 12 in both places. Under § 12-602(21), Section P2902.5.3 Lawn irrigation systems deletes the words "an atmospheric-type vacuum breaker, a pressure type vacuum breaker or" from the first sentence.

Section 12-503 requires at least one copy of the plumbing code in the Town Clerk's office, kept there for the use and inspection of the public. Chapter 5 does not itself print permit fees or name the enforcing official. By contrast, the mechanical code chapter names the building official or designee for enforcement in § 12-402, so anyone pulling a plumbing permit should read the two chapters together with the fee schedule the Town Council adopts.

Violations & Fines

A violation of any provision of Chapter 5 subjects the offender to a penalty under the general penalty provision of the Smyrna Municipal Code, and each day an offense occurs constitutes a separate violation (§ 12-504). The chapter prints no dollar figure. For homes built under the residential code, § 12-604 separately makes it unlawful for any person to violate or fail to comply with any provision of the residential code as adopted and modified.

Frequently Asked Questions

Which plumbing code does Smyrna, Tennessee, enforce?
Section 12-501 adopts the International Plumbing Code, 2024 edition, and modifications thereto, by reference. The local modifications are listed in § 12-502. A copy of the code is kept in the Town Clerk's office for the use and inspection of the public under § 12-503.
What water service pipe size does Smyrna require?
Section 12-502(4) amends Section 603.1, Size of water service pipe, to insert "1 inch in lieu of ¾." The amendment replaces the ¾ figure with 1 inch, so the Smyrna-specific size is the one printed in the Municipal Code, not the model code's default.
What sewer depth and roof extension figures did Smyrna set?
Section 12-502(3) amends Section 305.4.1, Sewer depth, by inserting "12" in place of [NUMBER] in both locations, without printing a unit. Section 12-502(5) amends Section 903.1.1, Roof extension, by inserting "8 inches" in place of [NUMBER]. The residential code repeats the sewer depth figure of 12 for Section P2603.5.1.
Are plumbing permit fees refundable in Smyrna?
Section 12-502 amends Section 106.6.3, Fee refunds, by inserting "100%" in lieu of the model code's blank percentage in subsection 2 and subsection 3. The Municipal Code prints the percentage but does not restate the circumstances in those subsections, which come from the adopted International Plumbing Code.

Sources & Official References

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