Plumbing permits in Knoxville, TN
A Knoxville plumbing permit covers repipes, water heater replacement, fixture sets, drain and sewer work. Save your license, insurance and bond details once, then produce the completed application — plus the attachments this jurisdiction expects — in under a minute.
Who pulls the plumbing permit in Knoxville
A separately licensed plumbing contractor normally pulls this permit in their own name, even when a general contractor holds the prime contract. The license number on the application must match the licence performing the work.
Where Knoxville plumbing permits are reviewed
Files with
Knoxville Plans Review & Inspections — Development Services
Online portal: My Project Portal
New fire alarm and suppression permit fees phase in during 2026.
Why Knoxville plumbing applications get kicked back
The most common cause is no licensed plumbing sub listed, or water heater work filed without the expansion tank and T&P discharge detail. Because the application is generated from your saved shop profile and the job scope, that field is populated before it ever reaches the counter.
What a Knoxville plumbing permit costs
A planning range for this trade — adjust the contract value to match the job.
Trade permits here are usually a flat fee, so value affects the adders more than the base.
Estimated Knoxville permit cost
$63 – $245
Modelled range, not a quote from the Knoxville building department.
- Base trade permitCharged as a fixed amount rather than a percentage of the job.$55 – $220
- Per-fixture adderCharged for each fixture, floor drain and water heater on the permit.$8 – $25
Method: valuation-based lines follow the stepped ICC/UBC Table 1-A progression that most residential schedules are still derived from, widened to reflect how much neighboring jurisdictions differ. Confirm the exact figure with the office listed on this page before you put it in a bid.
Inspection sequence
- Rough / under-slab
- Top-out
- Final plumbing
Never cover work ahead of the inspection that covers it — a re-open is the most expensive avoidable cost on a plumbing job.
What each Knoxville inspector checks, step by step →Get the Knoxville plumbing permit checklist
One page covering the forms, attachments and inspection sequence Knoxville plumbing crews get held up on.
No account required. One email, unsubscribe any time.
Other trades in Knoxville
General guidance for Knoxville plumbing contractors, not legal advice. Confirm requirements and fees with the authority having jurisdiction.