Residential Addition / Remodel / Accessory Structure Permit in City of Maricopa, Arizona

Yes, a building permit is required for room additions and remodels affecting structural or life-safety elements, reviewed against the 2024 IRC as adopted by the City of Maricopa. The narrow no-permit exceptions are limited to one-story detached accessory structures up to 200 sq ft with no mechanical/electrical/plumbing components, and patio/porch covers up to 120 sq ft.

In City of Maricopa, the published Major TI (Tenant Improvement, >50% of area disturbed) is: 40% of area building valuation. Additional published fees: Minor TI (Tenant Improvement, <50% of area disturbed) — 20% of area building valuation; Carport Fee (structure open on more than two sides) — 30% of U occupancy & construction type; Residential Permit Issuance Fee — $50; Residential Revisions (3rd and subsequent review) — $112 per hour, 1/2 hour minimum. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Per the City's Plan Review Turnaround Times document, 'Additions/Alterations' averages 8 working days for first review (4 for subsequent reviews), plus a 10-working-day administrative completeness review and 20-working-day substantive review, for an overall review time of about 30 working days based on 2 review cycles.

You'll need: Building Permit Application (VIP Portal); Site/Plot Plan. Depending on your project, City of Maricopa may also ask for: Residential Accessory Structure Guide; Deck Guide. See the required-documents checklist on this page for details on each.

City of Maricopa requires 3 inspection(s) for a residential addition / remodel / accessory structure permit, in order: Foundation/Footing, Framing, Final. Schedule each through City of Maricopa Development Services Department (Permit Center) ((520) 316-6920).

Apply through City of Maricopa Development Services Department (Permit Center) at 39700 W Civic Center Plaza, Maricopa, AZ 85138. Phone: (520) 316-6920, email: dsd@maricopa-az.gov. Office hours: Monday through Thursday, 7:00 a.m. to 6:00 p.m. (CLOSED Fridays) — the City of Maricopa operates on a four-day work week. The City has moved to an all-digital application and plan review platform; paper plan submittals are no longer accepted. All permit applications, plan submittals, fee payments, and inspection requests are handled via the VIP Portal (ci-maricopa-az.smartgovcommunity.com), a SmartGov Community platform. Source: City of Maricopa Permit Center page and Plan Review Turnaround Times document (Rev 5/2026).. Official information: https://www.maricopa-az.gov/Departments/Development-Services/Permit-Center.

City of Maricopa, 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 Maricopa independently adopts and administers its own construction codes through its Development Services Department; it does not defer to Pinal County for permitting within incorporated city limits. Source: Maricopa City Code (MCC) Chapter 15, Building Regulation, Ordinance 26-01.; On January 20, 2026, the City of Maricopa City Council approved adoption of the 2024 International Codes (IBC, IRC, IPMC, IMC, IPC, IFGC, IECC, IFC, International Swimming Pool and Spa Code) plus the 2023 NEC and ICC A117.1-2017 Accessible and Usable Buildings and Facilities Code, codified as Ordinance 26-01 and effective February 20, 2026. Source: City of Maricopa Public Notice — City of Maricopa Building Codes Implementation; Maricopa City Code Chapter 15.05, as codified March 2026.; 2024 International Building Code (IBC), published by the International Code Council, together with appendages, adopted as the building code of the City of Maricopa (MCC 15.05.040), with City amendments. Source: Maricopa City Code 15.05.040, Ordinance 26-01 § 2.; 2024 International Residential Code (IRC), published by the International Code Council, together with appendices (excluding B, BB, NB, NG, NH, and N2), adopted as the residential building code of the City of Maricopa (MCC 15.05.050), with City amendments. Source: Maricopa City Code 15.05.050, Ordinance 26-01 § 2.; 2024 International Property Maintenance Code (IPMC), adopted as the property maintenance code of the City of Maricopa (MCC 15.05.060), with City amendments. Source: Maricopa City Code 15.05.060, Ordinance 26-01 § 2.; 2024 International Mechanical Code (IMC), adopted as the mechanical code of the City of Maricopa (MCC 15.05.070), with City amendments. Source: Maricopa City Code 15.05.070, Ordinance 26-01 § 2.; 2024 International Plumbing Code (IPC), adopted as the plumbing code of the City of Maricopa (MCC 15.05.080), with City amendments. Source: Maricopa City Code 15.05.080, Ordinance 26-01 § 2.; 2024 International Fuel Gas Code (IFGC), adopted as the fuel gas code of the City of Maricopa (MCC 15.05.090), with City amendments. Source: Maricopa City Code 15.05.090, Ordinance 26-01 § 2.; National Electrical Code (NEC), 2023 Edition, published by the National Fire Protection Association, adopted as the electrical code of the City of Maricopa (MCC 15.05.100), with City amendments (electrical code cycle is one edition behind the 2024 ICC set, as is standard practice statewide). Source: Maricopa City Code 15.05.100, Ordinance 26-01 § 2.; 2024 International Energy Conservation Code (IECC), adopted as the energy code of the City of Maricopa (MCC 15.05.110). Source: Maricopa City Code 15.05.110, Ordinance 26-01 § 2.; 2024 International Fire Code (IFC), adopted as the fire code of the City of Maricopa (MCC 15.05.120) with Appendices B, C, D, E, F, G, H, I, J, K, L, M, N, and O adopted and extensive City amendments (sprinkler/alarm thresholds, fire department connection sizing, hazardous materials permitting); administered by the City of Maricopa Fire/Medical Department. Source: Maricopa City Code 15.05.120, Ordinance 26-01 § 2.; International Swimming Pool and Spa Code, adopted by the City of Maricopa (MCC 15.05.130). Source: Maricopa City Code 15.05.130, Ordinance 26-01 § 2 (chapter section list).; ICC A117.1-2017 Accessible and Usable Buildings and Facilities Code, adopted by the City of Maricopa (MCC 15.05.140) as its accessibility standard (the IBC's own referenced-standard section was amended to point to A117.1-2017 rather than an earlier edition). Source: Maricopa City Code 15.05.040(B) and 15.05.140, Ordinance 26-01 § 2.; International Wildland-Urban Interface Code, adopted by the City of Maricopa (MCC 15.05.150). Source: Maricopa City Code 15.05.150, Ordinance 26-01 § 2 (chapter section list).; Building permit and plan review fees are NOT set by the ICC codes' own fee tables — every adopted code's fee schedule section (IBC 109.2, IRC R108.2, IMC 108.2, IPC 106.6.2, IFGC 108.2) is explicitly amended to read: 'Building permit fees shall be assessed in accordance with the City of Maricopa Development Services Fee Schedule as approved by City Council.' The Development Services Fee Schedule (effective 10/02/2025) is the sole authoritative fee source. Source: Maricopa City Code 15.05.040(B), .050(B), .070(B), .080(B), .090(B); City of Maricopa Development Services Fee Schedule, Rev. 10/2025.; Manufactured homes, mobile homes, and factory-built buildings are separately addressed under the City's Manufactured Homes and Recreational Vehicles Process Guide; construction/installation standards for these units are regulated directly by the State of Arizona (A.R.S. § 41-4001 et seq., Arizona Department of Fire, Building and Life Safety / Office of Manufactured Housing), with the City handling on-site placement, foundation/tie-down, and zoning compliance. Source: City of Maricopa Handouts, Checklists & Guidelines page — Manufactured Homes and Recreational Vehicles Process Guide.. Local amendments apply — see the City of Maricopa overview page for the full list.