Do I Need a Permit to Replace a Water Heater in Nevada?
Quick Answer
Yes — even for a like-for-like replacement.
Why a Simple Swap Needs a Permit
Most jurisdictions require a permit for all water heater replacements, even when you're installing the same type and size. The permit ensures proper venting, gas connections, temperature/pressure relief valve discharge, and seismic strapping. Improper water heater installations are a leading cause of residential CO poisoning and water damage.
What Inspectors Check
The inspector will verify: gas line connections and drip leg (sediment trap), proper venting (metal B-vent for standard, PVC for high-efficiency), T&P relief valve discharging to within 6 inches of the floor or exterior, seismic strapping (two straps — upper and lower third), and adequate combustion air supply.
Tankless Conversion
Converting from a tank to tankless water heater often requires additional work: a larger gas line (tankless units draw more BTUs), PVC venting (most tankless units are high-efficiency), and potentially an electrical outlet for the unit. This may trigger both plumbing and gas permits.
DIY vs. Hiring a Plumber
Many jurisdictions allow homeowners to replace their own water heater in their primary residence — confirm with your city. You still must pull the permit and pass inspection. Most homeowners hire a licensed plumber because the permit and inspection process is simpler when the contractor handles it.
Bottom Line
Yes, you need a $40-$60 permit. It's a quick same-day approval and one final inspection. Don't skip it — it protects you and your home.
Permit fees by city in Nevada
Verified from each city’s published fee schedule. Where a city has no separate fee listed for this project, open the city page for the current requirements and amount.
| City | Permit fee | Source |
|---|---|---|
| Carson City | Varies — valuation-based (1.5% of value, $65 min)Verified | Plumbing Permit → |
| Douglas County | $89.93 (flat fee)Verified | Plumbing Permit → |
| Henderson | $81Verified | Plumbing Permit → |
| Las Vegas | $22 inspection only (no plan check required)Verified | Plumbing Permit → |
| Mesquite | Square footage × $0.045Verified | Plumbing Permit → |
| North Las Vegas | $75 per permitVerified | Plumbing Permit → |
| Reno | $45.00Verified | Plumbing Permit → |
| Sparks | $20.00 base + $10.00 supplementalVerified | Plumbing Permit → |
| Unincorporated Clark County | $54.00Verified | Plumbing Permit → |
| Unincorporated Washoe County | $45.00Verified | Plumbing Permit → |