State coverage plus separate city programs in Gallatin and Hendersonville, including Hendersonville's recently rewritten ordinance and its per-acre land disturbance surety.
Sumner County wraps the north side of Old Hickory Lake, and its two biggest cities, Gallatin and Hendersonville, each run their own stormwater program on top of the county's. Hendersonville in particular rewrote its ordinance recently, so the local rules there are worth a close look before you break ground.
Answer a few questions about your site and get a field-ready SWPPP built to TDEC permit TNR100000, ready to review, sign, and submit.
Get startedAnywhere in Tennessee, a project that disturbs one acre or more (including a lot inside a larger common plan of development) needs coverage under the Construction General Permit (TNR100000): a written SWPPP, a Notice of Intent filed in MyTDEC (form CN-0940), twice-weekly inspections documented on form CN-1173, and a Notice of Termination at closeout. If that is new to you, start with Do I need a SWPPP in Tennessee? and how to file your NOI.
The unincorporated county administers a Land Disturbance Permit under its Stormwater Management Resolution (MS4 number TNS075680). As in much of Middle Tennessee, the permit becomes void if substantial work does not begin within 180 days, plans must be stamped by a Tennessee-registered engineer, and performance security is held until as-built plans are submitted and a final county inspection passes.
Hendersonville passed a revised stormwater ordinance on September 10, 2024. Land disturbance applications now go through the city's Citizen Self Service (CSS) portal with a $50 application fee, and the city requires a land disturbance surety of $10,000 per acre, rounded up. For a 2.4-acre site, that rounds to 3 acres, so the surety is $30,000, released after the post-construction permit is issued. Any state permits (CGP, ARAP, MSGP) must be obtained before you apply, and a long-term maintenance agreement gets recorded with the Sumner County Register of Deeds, with owner inspections of stormwater control measures annually and a comprehensive inspection every five years.
Gallatin runs its own stormwater ordinance with a Land Disturbance Permit, a stormwater utility, and a Stormwater Design Appeals Board, and its EPSC design must meet the latest TDEC Construction General Permit. Confirm current thresholds and submittals with the city's Stormwater Engineering Division.
Figure out whether your site is county, Gallatin, or Hendersonville, because the process and the money differ (Hendersonville's per-acre surety can be significant). Your SWPPP should be ready to support the local application and, in Hendersonville, the online submittal and maintenance agreement.
SWPPP Builder generates a field-ready Tennessee SWPPP built to the state Construction General Permit in about an hour. Pricing is flat and posted up front: $349 for a standard non-engineered contractor SWPPP, $99 for a single-family homebuilder plan (built on TDEC form CN-1249), and $499 when your site needs engineered or pre-approved plans. That is a fraction of the $1,500 to $5,000 a consultant typically charges, and you keep the file in your account to reuse and update as the job changes.
Since its September 10, 2024 ordinance update, Hendersonville takes applications through the Citizen Self Service (CSS) portal with a $50 fee and requires a land disturbance surety of $10,000 per acre, rounded up. State permits must be obtained first.
The surety is $10,000 per acre rounded up, so 2.4 acres rounds to 3 acres, or $30,000. It is released after the post-construction permit is issued. Confirm current amounts with the city.
Yes. Gallatin runs its own stormwater ordinance, Land Disturbance Permit, utility, and design appeals board, separate from the unincorporated county program. Confirm your jurisdiction.
Under the county resolution, the permit becomes void if substantial work does not begin within 180 days of issuance. Plans must be stamped by a Tennessee-registered engineer.