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Mechanical / HVAC Permit — Unincorporated San Juan County, New Mexico · Requirements sheet
Verified 2026-07-05 · Source: https://www.sjcounty.net/government/community-development/building-department
PermitBase is an independent reference and is not affiliated with any government agency. Requirements change and vary by project — confirm current details with the building department before you submit.
Mechanical / HVAC Permit in Unincorporated San Juan County, New Mexico
Required for furnace/AC installation or replacement, gas piping, radiant in-floor heat, solar water heating, and ventilation work in unincorporated San Juan County. Self-administered directly by the San Juan County Building Division using its own Mechanical Permit Application (rev. 04/11/2023) — not routed through the New Mexico Construction Industries Division.
Verified 2026-07-05 · Source
When you need this permit
- New, addition, or remodel mechanical/HVAC work for residential or commercial scopes; appliance changeout and pressure-test scopes also use this application
- Valid New Mexico mechanical contractor license (license number and expiration date required on the application) Contractor
- Radiant in-floor heat systems require approved R-5 (1-inch) insulation under-slab, per the Mechanical Permit Application's printed note
Required documents
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Fee schedule
Heating and Cooling Distribution — ResidentialSan Juan County Mechanical Permit Application (rev. 04/11/2023)
Heated sq ft x $0.03/sq ft
Heating and Cooling Distribution — CommercialMechanical Permit Application fee table
Heated sq ft x $0.06/sq ft
Gas Piping System (new or replacement) — with yard lineMechanical Permit Application fee table
$40 each
Gas Piping System (new or replacement) — without yard lineMechanical Permit Application fee table
$30 each
Reconnect Gas Test (administrative fee charge only)Mechanical Permit Application fee table
Administrative fee only, no separate line amount published
Solar Water Heating SystemMechanical Permit Application fee table
$10 each
Heating Unit(s)Mechanical Permit Application fee table
System including related equipment/components: $25 each
Cooling Unit(s)Mechanical Permit Application fee table
First unit $10, additional units $5 each
Combo Unit(s)Mechanical Permit Application fee table
First unit $20, additional units $10 each
Type I HoodMechanical Permit Application fee table
$20 each
Administrative FeeMechanical Permit Application fee table
$40
Reinspection FeeMechanical Permit Application (rev. 04/11/2023), printed fee assessment notice
$75.00
Review timeline
Plan review
Not published — contact the department
Inspection process
- 1
Rough Heating and Ventilation
Appliance vents through the roof, trunk line and taps installed, combustion air provided, exhaust ducts complete
- 2
Mechanical Final
Gas appliances connected to gas supply and operational, vent terminations complete, return and supply grills in place, cooling units complete and functional
See the full Unincorporated San Juan County inspection guide — scheduling & re-inspection fees →
Tips
- Radiant in-floor heat requires approved R-5 (1-inch) under-slab insulation, per the Mechanical Permit Application's printed note.
- Gas piping fees differ depending on whether a yard line is included: $40/ea with a yard line versus $30/ea without — the same split used on the Plumbing Permit Application.
- Inspection requests require at least 24 hours' notice, scheduled by calling (505) 334-4313.
- All mechanical permit fees are non-refundable, and a $75.00 reinspection fee applies if work fails inspection.
Frequently asked questions
Unincorporated San Juan County requires a mechanical / hvac permit for: New, addition, or remodel mechanical/HVAC work for residential or commercial scopes; appliance changeout and pressure-test scopes also use this application; Valid New Mexico mechanical contractor license (license number and expiration date required on the application); Radiant in-floor heat systems require approved R-5 (1-inch) insulation under-slab, per the Mechanical Permit Application's printed note. If your project isn't listed, confirm with San Juan County Community Development Department — Building Division at (505) 334-4313 (Building Division); (505) 334-4550 (Community Development main line, fax (505) 334-3755) before starting work.
A heating unit (including related equipment/components) is $25 each; a cooling unit is $10 for the first unit and $5 for each additional unit; a combo unit is $20 for the first and $10 for each additional, plus the $40 administrative fee.
Unincorporated San Juan County does not publish a plan-review timeline for this permit. Contact San Juan County Community Development Department — Building Division at (505) 334-4313 (Building Division); (505) 334-4550 (Community Development main line, fax (505) 334-3755) for current turnaround.
You'll need: Mechanical Permit Application. See the required-documents checklist on this page for details on each.
Unincorporated San Juan County requires 2 inspection(s) for a mechanical / hvac permit, in order: Rough Heating and Ventilation, Mechanical Final. Schedule each through San Juan County Community Development Department — Building Division ((505) 334-4313 (Building Division); (505) 334-4550 (Community Development main line, fax (505) 334-3755)).
Apply through San Juan County Community Development Department — Building Division at 209 S. Oliver Dr., Aztec, NM 87410. Phone: (505) 334-4313 (Building Division); (505) 334-4550 (Community Development main line, fax (505) 334-3755), email: Not published on the county's Building Department or Community Development pages as of this verification — contact by phone at (505) 334-4313 (Building Division inspections/permit questions) or (505) 334-4550 (Community Development front desk). Office hours: Monday–Thursday 7:00 AM – 5:30 PM; closed Friday (per the Community Development Department contact block, which the Building Division falls under; a four-day/10-hour county work week). As of July 2026, the County's online SmartGov permitting portal (co-sanjuan-nm.smartgovcommunity.com/Public/Home) is live for application submittal, inspection results, and code enforcement lookups; homeowner permits must still be applied for in person per the portal's own notice.. Official information: https://www.sjcounty.net/government/community-development/building-department.
Unincorporated San Juan County, New Mexico has adopted: GOVERNANCE MODEL: San Juan County Building Division self-administers building, electrical, plumbing, and mechanical/HVAC permitting DIRECTLY for the unincorporated county (plus Aztec, Bloomfield, and Kirtland by service agreement) — it is NOT a New Mexico Construction Industries Division (CID) field-office pass-through jurisdiction for any trade. The County's own Building Department page states 'Construction Codes are adopted and amended by the State of New Mexico Construction Industries Division' (i.e., the SUBSTANTIVE code editions track the statewide CID-adopted codes), but the County itself issues, plan-reviews, fee-schedules, and inspects all four disciplines using its own application forms, its own fee schedule, and its own inspection staff reachable at (505) 334-4313 — there is no CID referral anywhere on the County's Building Department page, in contrast to jurisdictions in this corpus (e.g. Los Alamos County) that explicitly hand off electrical/plumbing/mechanical to CID. Source: sjcounty.net Building Department page (retrieved via full-browser-header fetch, July 2026).; 2021 New Mexico Commercial Building Code — San Juan County Building Department, Construction Codes list; 2021 New Mexico Residential Building Code — San Juan County Building Department, Construction Codes list; 2021 International Residential Code (IRC) — San Juan County Building Department, Construction Codes list; 2021 International Building Code (IBC) — San Juan County Building Department, Construction Codes list; 2021 International Existing Building Code (IEBC) — San Juan County Building Department, Construction Codes list; 2021 New Mexico Energy Conservation Code / 2021 International Energy Conservation Code (IECC) — San Juan County Building Department, Construction Codes list; New Residential Permit Application Checklist (rev. 07/19/2023) requires a '2021 IECC Residential Energy Code Compliance Form' with every residential submittal; ICC/ANSI A117.1-2017 Accessible and Usable Buildings and Facilities — San Juan County Building Department, Construction Codes list; 2021 New Mexico Plumbing and Mechanical Code — San Juan County Building Department, Construction Codes list; 2021 Uniform Mechanical Code (IAPMO) — San Juan County Building Department, Construction Codes list; 2021 Uniform Plumbing Code (IAPMO) — San Juan County Building Department, Construction Codes list; 2021 International Fire Code — San Juan County Building Department, Construction Codes list; 2020 National Electrical Code (NEC), NFPA 70 — San Juan County Building Department, Construction Codes list; 2020 New Mexico Electrical Code — San Juan County Building Department, Construction Codes list; 2012 Uniform Solar Energy Code (IAPMO) — San Juan County Building Department, Construction Codes list; 2012 Uniform Swimming Pool, Spa and Hot Tub Code (IAPMO) — San Juan County Building Department, Construction Codes list; 2017 NFPA 58 (LP-Gas Code) — San Juan County Building Department, Construction Codes list; 2018 NFPA 54 (National Fuel Gas Code) — San Juan County Building Department, Construction Codes list; New Mexico Construction Industries Licensing Act, NMAC 14.6.6 — governs contractor licensing classifications/qualifications statewide; cited on the County's Commercial Buildings Permit Application as the basis for its 'all commercial projects require a licensed contractor' requirement. Source: San Juan County Commercial Buildings Permit Application (rev. 07/31/2023).. Local amendments apply — see the Unincorporated San Juan County overview page for the full list.
The San Juan County Building Division issues and inspects mechanical/HVAC permits directly — this is NOT routed through the New Mexico Construction Industries Division. Use the county's own Mechanical Permit Application (rev. 04/11/2023).
Sources & verification
Verified against official sources. Last reviewed 2026-07-05.
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Unincorporated San Juan County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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