Do I Need a Permit to Replace a Water Heater in New Mexico?
Water heater replacement permit requirements. Yes, even for like-for-like swaps. What inspectors check and how to pass.
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.
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 New Mexico
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.
26 rows
| Permit fee | Source | |
|---|---|---|
| Alamogordo | $37.50Verified | Plumbing Permit → |
| Albuquerque | $23.50 minimum for valuation $1–$2,000; then $23.50 for the first $500 plus $3.05 per additional $100 (to $2,000); $69.25 for the first $2,000 plus $14.00 per additional $1,000 (to $25,000); $391.75 for the first $25,000 plus $10.10 per additional $1,000 (to $50,000); $643.75 for the first $50,000 plus $7.00 per additional $1,000 (to $100,000); $993.75 for the first $100,000 plus $5.60 per additional $1,000 thereafter — modifier of 0.50 applied to the resulting valuation for one- and two-family dwellingsVerifiedvia Residential Building Permit (New Construction) | Residential Building Permit (New Construction) → |
| Artesia | $40.00Verified | Plumbing Permit → |
| Aztec | See city page for the current Plumbing Permit fee | Plumbing Permit → |
| Bernalillo | $25.00Verifiedvia Residential Building Permit (CID) | Residential Building Permit (CID) → |
| Bloomfield | $0.03 per heated sq ftVerified | Plumbing Permit → |
| Carlsbad | $4.00 (residential); commercial fixture-count totals observed at $40.00-$60.00 for multi-fixture commercial jobsVerified | Plumbing Permit → |
| Clovis | Same Type I valuation table used city-wide: e.g. $28.00 + $5.60 per $1,000 for $2,000–$25,000 valuationVerified | Residential Plumbing Permit → |
| Deming | $37.50Verified | Plumbing Permit → |
| Edgewood | Valuation-based; contact a CID office for a project-specific quoteVerifiedvia State Building Permit (NM Construction Industries Division) | State Building Permit (NM Construction Industries Division) → |
| Española | $37.50Verified | Plumbing Permit → |
| Farmington | See city page for the current Residential Plumbing Permit fee | Residential Plumbing Permit → |
| Gallup | $37.50Verified | Plumbing Permit → |
| Hobbs | $10.00Verified | Residential Plumbing Permit → |
| Las Cruces | $150.00Verified | Residential Plumbing Permit → |
| Los Alamos County | $37.50Verified | Plumbing Permit (CID-Administered) → |
| Rio Rancho | $60.00Verified | Residential Plumbing Permit → |
| Roswell | $24.00Verifiedvia Residential Building Permit | Residential Building Permit → |
| Santa Fe | $50.00 per permitVerified | Plumbing Permit → |
| Sunland Park | Calculated per the Most Current Version of the Uniform Building Code (ICC Building Valuation Data / BVD formula)Verifiedvia Residential Building Permit (New Construction / Addition) | Residential Building Permit (New Construction / Addition) → |
| Town of Taos | $250.00 per residential dwelling (attached or semi-attached units, up to 5 dwellings)Verifiedvia Residential Building Permit (Zoning Review Application) | Residential Building Permit (Zoning Review Application) → |
| Unincorporated Bernalillo County | $5.00 eachVerified | Water Heater Permit → |
| Unincorporated Doña Ana County | $0.20 per total square foot of floor area (measured to the outside walls; to the outside edge of the floor/roof-line for a carport, covered porch, or similar structure)Verifiedvia Single Family Dwelling Permit | Single Family Dwelling Permit → |
| Unincorporated San Juan County | Heated sq ft x $0.03/sq ftVerified | Plumbing Permit → |
| Village of Corrales | $23.50Verifiedvia Construction Permit (New Residential Construction) | Construction Permit (New Residential Construction) → |
| Village of Los Ranchos de Albuquerque | $30.00 plus $4.00 per $1,000.00 of valuationVerifiedvia Building Permit (New Construction, Addition, or Alteration) | Building Permit (New Construction, Addition, or Alteration) → |