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Plumbing Permit in Unincorporated Maricopa County, Arizona

Required for plumbing installations and repairs in the unincorporated areas of Maricopa County. Maricopa County Planning and Development issues plumbing permits under the 2018 International Plumbing Code (IPC) with local amendments. Web-issued (instant) and standard-review categories apply depending on project type. Water heater replacement does not require a permit if done per manufacturer's specifications. Applications are submitted online through Permit Center.

Verified 2026-06-29 · Source

When you need this permit

  • Web-issued (instant, automated): plumbing repair like-for-like; solar water heater with ground-mounted tank; sewer line repair for single-family residential
  • Non-technical (1–2 business day processing): new gas line for BBQ, fireplace, pit, wok, Kiva, pool/spa heater; propane tank less than 250 gallons
  • Technical/standard review: propane tanks 250 gallons or larger
  • Apply online through Permit Center at https://maricopacountyaz-energovweb.tylerhost.net/apps/selfservice
  • Virtual inspections available for: Repair/Replace Gas Line; Sewer/Septic Lines

Required documents

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Fee schedule

Plumbing repair/replace like-for-like; sewer line SFR; irrigation system (Minor Self Service)Local Additions and Addenda Flat Rate Fees (June 2024 Summary of Fee Schedule)
$50 flat each
Plumbing — install or replace equipment/fixture/devices (Minor Self Service)Local Additions and Addenda Flat Rate Fees
$50 flat
New gas line: BBQ, fireplace, pit, wok, Kiva, pool/spa heater (Minor Self Service)Local Additions and Addenda Flat Rate Fees
$50 flat

Review timeline

Plan reviewTypical estimate — confirm current times with the Unincorporated Maricopa County building department
~1–10 business days

How long did your Plumbing Permit permit actually take in Unincorporated Maricopa County?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Gas Piping Pressure Test

    Required before concealing gas piping — verify no leaks under test pressure per 2018 IFGC

  2. 2

    Final Plumbing

    All plumbing work complete and operational per 2018 IPC/IFGC

See the full Unincorporated Maricopa County inspection guide — scheduling & re-inspection fees →

Tips

  • Water heater replacement does NOT require a permit in unincorporated Maricopa County if done in accordance with the manufacturer's specifications. However, an optional voluntary inspection permit may be applied for if you want county inspection of the work.
  • Virtual inspections are available for gas line repair/replacement and sewer/septic lines — apply and schedule through Permit Center.
  • Propane tanks of 250 gallons or larger require a technical review with site plan; tanks under 250 gallons are a non-technical permit processed in 1–2 business days.

Frequently asked questions

No. Maricopa County no longer requires a building permit to replace an existing water heater, provided the work is done in accordance with the manufacturer's specifications. However, if you wish to have Maricopa County inspect the work, you may apply for a voluntary permit through Permit Center. Source: https://www.maricopa.gov/1629/Construction-Permit-Information

In Unincorporated Maricopa County, the published Plumbing repair/replace like-for-like; sewer line SFR; irrigation system (Minor Self Service) is: $50 flat each. Additional published fees: Plumbing — install or replace equipment/fixture/devices (Minor Self Service) — $50 flat; New gas line: BBQ, fireplace, pit, wok, Kiva, pool/spa heater (Minor Self Service) — $50 flat. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Plan review for a plumbing permit in Unincorporated Maricopa County typically runs 1–10 business days. This is an estimate, not a published figure — confirm current review times with Maricopa County Planning and Development Department at 602-506-3301.

You'll need: Online Permit Center Application. See the required-documents checklist on this page for details on each.

Unincorporated Maricopa County requires 2 inspection(s) for a plumbing permit, in order: Gas Piping Pressure Test, Final Plumbing. Schedule each through Maricopa County Planning and Development Department (602-506-3301).

Apply through Maricopa County Planning and Development Department at 301 W. Jefferson, Suite 170, Phoenix, AZ 85003. Phone: 602-506-3301. Office hours: Mon–Fri 8:00 AM – 5:00 PM. Official information: https://www.maricopa.gov/797/Planning-Development.

Unincorporated Maricopa County, Arizona has adopted: 2018 International Building Code (IBC) — adopted by Maricopa County Board of Supervisors 17 August 2022 (with AZBO/MAG amendments); Local Additions and Addenda TA2022001 dated 19 September 2022; 2018 International Residential Code (IRC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments and Local Additions and Addenda); 2018 International Plumbing Code (IPC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments); 2018 International Mechanical Code (IMC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments); 2018 International Fuel Gas Code (IFGC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments); 2018 International Existing Building Code (IEBC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments); 2018 International Green Construction Code (IgCC) — adopted 17 August 2022, optional use; 2018 International Energy Conservation Code (IECC) — adopted 17 August 2022, optional use; 2017 National Electrical Code (NEC) — adopted 17 August 2022 (BOS vote, with AZBO/MAG amendments). Local amendments apply — see the Unincorporated Maricopa County overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-06-29.

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 Maricopa County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

Other permits in Unincorporated Maricopa County

Residential Building Permit (New Construction, Addition, Accessory Structure)Commercial Building Permit (New Construction, Tenant Improvement, Remodel)Electrical PermitMechanical / HVAC PermitSolar PV Permit (Roof-Mounted and Ground-Mounted Photovoltaic)Pool / Spa Permit (In-Ground and Above-Ground)Fence / Block Wall PermitDemolition PermitEV Charger / EVSE Permit

Plumbing Permit in other cities

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