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Residential Addition / Garage Conversion / Patio Enclosure Permit in El Mirage, Arizona

Required for garage conversions into livable space, carport or patio enclosures, and room additions to existing one- and two-family dwellings in El Mirage. Reviewed against the 2018 IRC as adopted and amended by the City of El Mirage.

Verified 2026-07-06 · Source

When you need this permit

  • Building permit required when converting a garage into a livable space or enclosing an existing carport or patio
  • Plans must outline the full scope of work, including all room dimensions, window and door sizes/locations, and construction details
  • If the converted space is used as a sleeping area, plans must include a smoke detector in the room
  • Rooms must be accessible through the existing house; no exterior-only entrances are allowed
  • Fees are based on the valuation of the project's square footage, plus a non-refundable $150.00 application fee

Required documents

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Fee schedule

Fees Based on Value (BOV)City of El Mirage FY25-26 Adopted Fee Schedule, Building Safety section
$75 flat (valuation $1,000 or less); $100 + $6/$1,000 of valuation ($1,001-$999,999); $100 + $5/$1,000 of valuation ($1,000,000+)
Permit Application DepositCity of El Mirage FY25-26 Adopted Fee Schedule, Building Safety section
$150, non-refundable, due at submittal
Building Plan ReviewCity of El Mirage FY25-26 Adopted Fee Schedule, Building Safety section
65% of permit fee

Review timeline

Plan reviewEl Mirage’s published plan-review target
10–15 business days

How long did your Residential Addition / Garage Conversion / Patio Enclosure Permit permit actually take in El Mirage?

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

Inspection process

  1. 1

    Electrical, Plumbing and Mechanical Rough

    Before walls are closed

  2. 2

    Framing and Structural

    Structural connections to existing structure

  3. 3

    Plumbing Top Out

    Plumbing stacks and vents verified before cover

  4. 4

    Energy (Insulation)

    Insulation verified before drywall

  5. 5

    Final

    Completed work verified against approved plans

See the full El Mirage inspection guide — scheduling & re-inspection fees →

Tips

  • Garage conversions used as a sleeping area must include a smoke detector in the room, per City requirements.
  • Converted/enclosed rooms must be accessible from inside the existing house — exterior-only entrances are not permitted.
  • Review timeline follows the City's Building Safety 'Residential Permits' track: 10 City business days for first review, 5 for each subsequent review, per the Plan Review Turnaround Times document.

Frequently asked questions

Yes, a building permit is required when converting a garage into livable space or enclosing an existing carport or patio. If the space will be used as a sleeping area, plans must include a smoke detector, and the room must be accessible through the existing house (no exterior-only entrances).

In El Mirage, the published Fees Based on Value (BOV) is: $75 flat (valuation $1,000 or less); $100 + $6/$1,000 of valuation ($1,001-$999,999); $100 + $5/$1,000 of valuation ($1,000,000+). Additional published fees: Permit Application Deposit — $150, non-refundable, due at submittal; Building Plan Review — 65% of permit fee. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

El Mirage's published plan-review target for a residential addition / garage conversion / patio enclosure permit is 10–15 business days.

You'll need: Building Permit Application (ELM Online Permits); Room Addition Handout; Site Plan and Construction Plans. See the required-documents checklist on this page for details on each.

El Mirage requires 5 inspection(s) for a residential addition / garage conversion / patio enclosure permit, in order: Electrical, Plumbing and Mechanical Rough, Framing and Structural, Plumbing Top Out, Energy (Insulation), Final. Schedule each through City of El Mirage Development Services Department — Building Safety / Permit Center (623-972-8116).

Apply through City of El Mirage Development Services Department — Building Safety / Permit Center at 10000 N El Mirage Road, El Mirage, AZ 85335-3607. Phone: 623-972-8116, email: bgomez@elmirageaz.gov. Office hours: Monday - Friday, 8:00 a.m. to 4:30 p.m. (excluding holidays). As of January 2, 2024, all plans must be submitted electronically through the ELM Online Permits portal (ci-elmirage-az.smartgovcommunity.com); the Development Services main line is 623-876-2977, TDD 623-933-3258, Fax 623-876-4605.. Official information: https://www.elmirageaz.gov/712/Permit-Center.

El Mirage, Arizona has adopted: Arizona has NO statewide mandatory building code floor for general construction — code adoption is a per-city/county authority under state enabling statutes (e.g., A.R.S. Title 9 for municipalities). The City of El Mirage runs its own Development Services / Building Safety Department and independently adopts and administers its own construction codes. Source: City of El Mirage Resolution R23-05-10 (adopted May 16, 2023) and City of El Mirage Permit Center page (elmirageaz.gov/712/Permit-Center).; 2018 International Building Code (IBC), adopted by reference with City of El Mirage local amendments, per Resolution R23-05-10 (A Resolution of the Mayor and Council of the City of El Mirage, Arizona, Adopting the Following 2018 International Codes...), passed and adopted May 16, 2023, effective July 1, 2023. Source: City of El Mirage Resolution R23-05-10 and 'Adopted Codes and Amendments' (PDF), City of El Mirage Building Safety Documents & Quick Links page.; 2018 International Residential Code (IRC), adopted by reference with City of El Mirage local amendments, per Resolution R23-05-10, effective July 1, 2023. Local IRC amendments include mandatory heating AND cooling (Section R303.10, capable of maintaining between 68-70°F and 90°F at 3 ft above floor / 2 ft from exterior walls), deletion of R313 Automatic Fire Sprinkler Systems in its entirety, and Section R301.2 Climatic and Geographic Design Criteria per Table R301.2(1). Source: Resolution R23-05-10, Exhibit — City of El Mirage Amendments to the 2018 International Residential Code.; 2018 International Fire Code (IFC), adopted by reference with City of El Mirage local amendments (including Appendix B minimum fire flow amendment, deletion of Appendix M High-Rise retroactive sprinkler requirement, and addition of Appendix O Fire Emergency Access Signage Details), per Resolution R23-05-10, effective July 1, 2023; administered by the El Mirage/Surprise/Youngtown regional Fire Department (El Mirage Fire-Medical Department). Source: Resolution R23-05-10, Exhibit — City of El Mirage Amendments to the 2018 International Fire Code.; 2018 International Mechanical Code (IMC), adopted by reference with City of El Mirage local amendments, per Resolution R23-05-10, effective July 1, 2023. Source: Resolution R23-05-10.; 2018 International Plumbing Code (IPC), adopted by reference with City of El Mirage local amendments, per Resolution R23-05-10, effective July 1, 2023. Source: Resolution R23-05-10.; 2018 International Fuel Gas Code (IFGC), adopted by reference with City of El Mirage local amendments, per Resolution R23-05-10, effective July 1, 2023. Source: Resolution R23-05-10.; 2018 International Existing Building Code (IEBC), adopted by reference with City of El Mirage local amendments, per Resolution R23-05-10, effective July 1, 2023. Source: Resolution R23-05-10.; 2018 International Energy Conservation Code (IECC), adopted by reference with City of El Mirage local amendments, per Resolution R23-05-10, effective July 1, 2023 — regulates energy efficiency in design/construction; the code's Chapter 11 residential energy provisions are folded into the IRC (N1101 et seq.) as adopted. Source: Resolution R23-05-10.; 2018 International Green Construction Code (IGCC), adopted by reference with City of El Mirage local amendments, per Resolution R23-05-10, effective July 1, 2023. Source: Resolution R23-05-10.; 2018 International Property Maintenance Code (IPMC), adopted by reference, per Resolution R23-05-10, effective July 1, 2023 — violations may be prosecuted as a civil infraction (fine $50-$1,000 per violation) or a class 1 misdemeanor (up to 180 days imprisonment and/or a fine up to $2,500 per violation, up to $20,000 if the violator is an enterprise). Source: Resolution R23-05-10.; 2017 ICC A117.1 Accessible and Usable Buildings and Facilities, adopted by reference, per Resolution R23-05-10, effective July 1, 2023, together with the Arizonans with Disabilities Act (A.R.S. Title 41, Chapter 9, Article 8) and the federal ADA. Source: Resolution R23-05-10.; 2017 National Electrical Code (NEC), adopted by reference with City of El Mirage local amendments (e.g., an amendment to NEC Article E3908.8 Option Four — electrical metallic tubing wiring methods, requiring an additional equipment grounding conductor sized per Table E3908.12), per Resolution R23-05-10, effective July 1, 2023 (note: electrical code cycle is one edition behind the 2018 ICC set). Source: Resolution R23-05-10, Exhibit — City of El Mirage Amendments to the 2017 National Electrical Code.; Manufactured housing used as dwellings and private sewage disposal systems are governed directly by the Arizona Department of Housing's Manufactured Housing & Building Division regulations — IRC Appendix E (Manufactured Housing Used as Dwellings) and Appendix I (Private Sewage Disposal) are each deleted in their entirety by City of El Mirage local amendment and replaced with a cross-reference to the state agency's regulations. Source: Resolution R23-05-10, Exhibit — City of El Mirage Amendments to the 2018 International Residential Code, Appendices E and I.. Local amendments apply — see the El Mirage overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-07-06.

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