What needs a permit
The City's Water Heater page (read 23 October 2026) covers both repair and replacement and lists no exemptions. The application asks for one of five scopes:
| Scope on the application | Typical job |
|---|---|
| New Installation | A heater where there was none, or a second unit |
| Replacement in Same Location with like equipment | A 50-gallon gas tank for a 50-gallon gas tank |
| Replacement in Same Location with different equipment | Tank to tankless, gas to electric or heat pump |
| Relocation | Moving the heater from the attic to the garage |
| Repair | Repair work on the existing heater |
A change of fuel or a move usually brings gas, electrical or venting work with it; ask the plumber whether that goes on the same permit or a separate one. A water heater that is part of a remodel is not singled out on this page.
Who can pull it
A plumbing contractor registered with the City. Denton's Contractor Registration page lists a free plumbing registration requiring a government-issued photo ID, a "Current Texas Master Plumbing License" and a list of authorized personnel; "Liability Insurance is verified through the State Website." Check the master plumber on the TSBPE public search. Only 20.4% of Denton water heater firms in our file matched an active TSBPE record by name, and 77.9% did not match, often because the license sits under the master plumber's own name rather than the trading name; search both. The City's pages we read do not describe a homeowner permit; call Building Safety on (940) 349-8600 first.
How to apply and get inspected
- Apply in eTRAKiT, or on the paper MEP Application at the Development Services Center, 401 N Elm Street. If the description field is too short, use Notes.
- Plumbing final. The City's Inspections List says the water heater inspection covers "T&P pipe material and point of discharge, sediment trap, pan, flood stop (if applicable)".
- Scheduling rules. Requests made by 5:59 a.m. are done that business day. Cancel by calling (940) 349-8600 before 9 a.m., or a re-inspection fee applies. A permit expires 180 days after issue unless an inspection renews it (FAQs).
Those four items are worth a look yourself before the inspector comes.
What it costs
From the City's Permit and Fee Schedule, effective 1 October 2026 (Ordinance 26-1576), read 23 October 2026:
| Fee | Amount |
|---|---|
| MEP Flat Fee ("i.e. Service Update, Water Heater, Mechanical"), Table 3 | $50 |
| Re-Inspection Fee, Table 6 | $75 |
| Plumbing Contractor Annual Registration, Table 6 | No fee |
| Working without a Permit, Table 6 | $453 |
$50 is about 2% of the usual $2,300 job.
What 1,391 Denton water heater permits show
| Measure | Denton water heaters |
|---|---|
| Permits on homes, October 2023 to September 2026 | 1,391 |
| Firms | 113 |
| Firms with a permit in the 12 months to September 2026 | 69 |
| Usual filed value | $2,300 |
| Middle half of firms' usual value (3+ permits) | $1,950 to $3,000 |
| Finaled (a year or more old) | 93.5% |
| 10th / 90th-percentile firm's finaled share (10+ permits) | 85.8% / 98.0% |
| Firms with a single permit | 54 (47.8%) |
| Busiest / quietest month | April (index 124) / August (84) |
Denton water heater permits close reliably: even the 10th-percentile busy firm finaled 85.8%, and the count of busy firms under 70% finaled is 0 of 22. The firm range is narrow ($1,950 to $3,000), so a like-for-like tank quote far above it deserves a question about what else is included. Prices by home value: Denton water heater cost; national ranges: water heater replacement cost; counts by year: Denton permit statistics.
See every Denton water heater installer by permits finaled →
Before you hire
Check the TSBPE license and City registration with the Denton contractor license lookup, then compare firms on the Denton water heater list. Rules elsewhere: do I need a permit for a water heater. Past permits on your address: Denton building permit search.
What this does not tell you
Denton's yearly permit files have no completion date, so we show finaled share but not days to final. Filed values are what the applicant entered and may or may not include the heater itself. Unpermitted swaps leave no record.
How we know this
The permit rule and scopes are quoted from the City of Denton's Water Heater page; fees from its Permit and Fee Schedule effective 1 October 2026; the inspection checklist from its Inspections List; registration from its Contractor Registration page; expiry from its Development Services FAQs, all read 23 October 2026. Our counts are City of Denton water heater permits on homes, October 2023 to September 2026.
Numbers come from City of Denton Building Safety permits on homes (the city's yearly permit reports), data through October 18, 2026. Nobody paid to be on this page and nobody can.
Questions
- Do I need a permit to replace a water heater in Denton?
Yes. The City's Water Heater page says water heater repair or replacement requires a permit, and the page lists no exemptions. The inspection is a plumbing final.
- How much is a water heater permit in Denton?
$50. The City's fee schedule effective 1 October 2026 lists a $50 MEP flat fee covering a water heater. A failed or uncancelled inspection adds a $75 re-inspection fee.
- Who can pull a water heater permit in Denton?
A plumbing contractor registered with the City, which takes a current Texas master plumbing license and photo ID; registration is free. The City's pages do not describe a homeowner route; ask Building Safety on (940) 349-8600.
- What does the inspector check on a Denton water heater?
The City's Inspections List names the T&P pipe material and point of discharge, the sediment trap, the pan, and a flood stop if applicable.
- How much does a water heater replacement cost in Denton?
The usual Denton water heater permit in our file carried a filed value of $2,300; the middle half of firms' usual jobs ran $1,950 to $3,000.
Build your own list
Every firm with that kind of permit on record. Pick what you value. The list moves.
Related guides
- Ames building permit search: how to look up permits on an address
- Do I need a permit to replace a water heater in Ames? Yes: the $59.07 permit, the inspection, and homeowner rules
- Do I need a water heater permit in Bellevue, WA? Gas vs electric, emergencies, and one firm with most of the permits
- Boulder SmartRegs: the 100-point rental efficiency standard, who is exempt, and hiring for the upgrades
- Do I need an HVAC permit in Prince George's County? Which permits an AC, heat pump or furnace needs, the 1.3% fee, and 12,659 permits
- Do I need a solar permit in Prince George's County? Building and electrical permits, the per-watt fee, SolarAPP+, and 9,331 permits
For one city
- Water Heater — City of Denton, TX (accessed 2026-10-23)
- Permit and Fee Schedule, effective October 1, 2026 (Ordinance 26-1576) — City of Denton Development Services (accessed 2026-10-23)
- Inspections List — City of Denton Building Safety (accessed 2026-10-23)
- Contractor Registration — City of Denton (accessed 2026-10-23)
- Development Services FAQs — City of Denton (accessed 2026-10-23)
- City of Denton eTRAKiT (2026-10-23)
- Free Licensee List and Public License Search — Texas State Board of Plumbing Examiners (2026-10-22)