Bolthole Index

Pinal County, Arizona

Building permits, zoning and septic in Apache Junction, Arizona

Apache Junction, Arizona requires building permits for regulated construction and administers its own zoning inside city limits.12 For properties in Pinal County, septic construction, repair and alteration require a county on-site wastewater permit, including inside incorporated areas.3 Apache Junction allows temporary RV residence for up to 8 months while a home is being built on single-family residentially zoned property, subject to setbacks and properly permitted utility connections.4

At a glance

Building permits
Required for regulated construction inside city limits1
Zoning
City zoning; lot area, setbacks, coverage and height vary by district25678
Septic permits
Pinal County for properties in Pinal County; incorporated-area wastewater approval also required3
RV during construction
Up to 8 months on single-family residentially zoned property, with conditions4
Manufactured homes
Only specified single-family districts; approved permanent foundation required9
Owner-builder
Conditional state contractor-license exemption; city building permits still required101

Who to call

Building permits

Apache Junction Building Safety and Inspection Division

City building permit applications and construction inspections

480-474-5156

[email protected]

300 E. Superstition Blvd. Bldg. D Apache Junction, AZ 85119

Online permits →

Zoning

Apache Junction Planning & Zoning Division

City zoning and planning applications

480-474-5083

[email protected]

300 E. Superstition Blvd. Bldg. D Apache Junction, AZ 85119

Online permits →

Septic permits

Pinal County Aquifer Protection Division

Septic construction permits and inspections for properties in Pinal County; small-parcel well application review

520-509-3555

[email protected]

85 N Florence Street First Floor Florence, AZ 85132

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

Going off-grid in Apache Junction means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

Do you need a building permit in Apache Junction, AZ?

Apache Junction requires a building permit before regulated construction, enlargement, alteration, repair, movement, demolition or occupancy changes, including regulated electrical, gas, mechanical and plumbing work.1 The city code provides exemptions for specified accessory structures and other work, but exempt work still must comply with applicable codes.1 Ask the city Building Safety and Inspection Division to classify your proposed work before starting.11

Arizona’s owner-builder exemption concerns contractor licensing for qualifying owner-occupied projects performed personally, through employees or through licensed contractors; the exemption does not remove local building-permit requirements.10 Apache Junction’s construction inspection and occupancy requirements still apply to permitted work and use of buildings.1213

Who issues building permits in Apache Junction, and how do you apply?

Apache Junction’s Building Safety and Inspection Division is the city contact for building permit applications, at 480-474-5156 or [email protected].11 The city accepts building permit applications through MyGovernmentOnline.org.11 Apache Junction requires the owner or authorized agent to apply to the Building and Safety Manager before regulated work begins.14

For construction inspections, call (480) 474-5101; required inspections are determined during plan review, and the permit holder must request them and keep the work accessible and exposed.1112 Ask Building Safety for the current fee estimate and submission requirements for your specific project.11

Does Apache Junction have zoning, lot-size rules and setbacks?

Apache Junction administers a city zoning ordinance, with residential lot area, setbacks, lot coverage and building height determined by district.25678 The RS-GR and RS-54/RS-54M districts require 1.25 acres per dwelling unit measured as gross land area; RS-20/RS-20M require 20,000 square feet, measured as net land area.5

Apache Junction permits accessory dwelling units by right in the listed residential districts, subject to the other applicable standards and accessory-dwelling regulations.15 Subdivisions, minor land divisions, lot-line adjustments and lot combinations are also regulated by the city.16 Ask Planning & Zoning at 480-474-5083 to identify the parcel’s district and the standards for the proposed home and accessory structures.17

How do septic permits work inside Apache Junction?

For Apache Junction properties in Pinal County, the Pinal County Aquifer Protection Division handles conventional and alternative septic construction permits and inspections.1819 Pinal County requires an on-site wastewater permit before constructing, repairing or altering a system, including on incorporated land unless otherwise provided by law.3 For incorporated-area systems, written approval from the agency or district responsible for wastewater disposal must be presented to Pinal County before the septic permit is issued.3

A Pinal County septic system cannot be covered or operated until final construction inspection and county approval to discharge.3 Ask Aquifer Protection at 520-509-3555 about the application and inspection sequence, and ask the wastewater provider whether the parcel can receive sewer service.193

Can you live in an RV or tiny home in Apache Junction?

Apache Junction allows temporary residence in an RV, motor home, fifth-wheel or existing legal manufactured home for up to 8 months while a home is being constructed on single-family residentially zoned property.4 The temporary residence must comply with the main building’s setback requirements, and temporary utility connections require proper permitting.4 That allowance is tied to home construction; it does not establish unrestricted year-round RV occupancy on any vacant lot.4

Apache Junction limits manufactured homes on single-family lots to specified districts and requires an approved permanent foundation.9 We could not confirm a tiny-home-specific occupancy rule or minimum dwelling size; ask city Planning & Zoning how the proposed structure would be classified, then ask Building Safety about building approval.1711

What are the steps to building a home in Apache Junction?

Use this order to bring the proposed home to the responsible offices.

  1. Ask Apache Junction Planning & Zoning to confirm the district, permitted use, lot area and setbacks.1756
  2. For a property in Pinal County needing septic, obtain the responsible wastewater agency’s written approval and the county on-site wastewater permit before system construction.3
  3. Apply to Apache Junction Building Safety before regulated building work begins; online building applications go through MyGovernmentOnline.org.1411
  4. Request the construction inspections specified during plan review and leave the work accessible for inspection.12
  5. Obtain the city certificate of occupancy or other required authorization before using or occupying the building, and county approval to discharge before operating a Pinal County septic system.133

What should you check before buying land in Apache Junction?

Apache Junction has city floodplain administration and development standards, so ask the city to identify the parcel’s regulated floodplain status and required approvals before fixing a building location.20 We could not confirm a general residential water or sewer connection threshold or driveway-access rule; ask city Development Services which approvals the parcel needs.1117

For groundwater wells, Arizona requires a Notice of Intent to Drill filed with the Arizona Department of Water Resources before drilling, deepening or modifying a well, with licensed well-drilling contractors performing the work.21 Pinal County reviews well applications for referral to ADWR on parcels 5 acres and smaller.19 Outside Apache Junction city limits, consult the Pinal County guide for the county’s unincorporated-area building and zoning requirements.2223

Watch-outs

  • Apache Junction’s construction-related RV allowance lasts up to 8 months and requires setbacks and properly permitted utility connections.4
  • City building approval does not replace Pinal County septic permits or approval to discharge for properties in Pinal County.13
  • We could not confirm Apache Junction’s tiny-home classification or minimum dwelling size; ask city Planning & Zoning before purchasing a small dwelling.17

Sources

  1. § 7-1-6 Permits (Apache Junction), quoted and re-checked
  2. Apache Junction, AZ Laws (Apache Junction), quoted and re-checked
  3. Pinal County Environmental Health Code Final 1.1.22, quoted and re-checked
  4. § 1-5-1 Residential Use Regulations (Apache Junction), quoted and re-checked
  5. § 1-5-2 Residential Bulk Regulations (Apache Junction), quoted and re-checked
  6. § 1-5-2 Residential Bulk Regulations (Apache Junction), quoted and re-checked
  7. § 1-5-2 Residential Bulk Regulations (Apache Junction), quoted and re-checked
  8. § 1-5-2 Residential Bulk Regulations (Apache Junction), quoted and re-checked
  9. § 1-9-2 Standards for Manufactured Homes on Single-Family Zoned Lots (Apache Junction), quoted and re-checked
  10. Persons not required to be licensed; penalties; applicability (Arizona statewide rule), quoted and re-checked
  11. Apache Junction Building Safety and Inspection Division (apachejunctionaz.gov)
  12. § 7-1-7 Inspections (Apache Junction), quoted and re-checked
  13. § 7-1-8 Certificates (Apache Junction), quoted and re-checked
  14. § 7-1-6 Permits (Apache Junction), quoted and re-checked
  15. § 1-5-1 Residential Use Regulations (Apache Junction), quoted and re-checked
  16. Chapter 2: Subdivision and Minor Land Division Regulations (Apache Junction), quoted and re-checked
  17. Apache Junction Planning & Zoning Division (apachejunctionaz.gov)
  18. Wells & Septic, quoted and re-checked
  19. Pinal County Aquifer Protection Division (pinal.gov)
  20. Article 5-1: Floodplain Management (Apache Junction), quoted and re-checked
  21. Well Drilling in Arizona, quoted and re-checked
  22. Building Safety (2026 county census)
  23. Frequently Asked Questions | Pinal County, AZ (2026 county census)

Written October 11, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for Apache Junction

Apache Junction’s own rules

  • Building permitRequired

    Construction, enlargement, alteration, repair, movement, demolition, occupancy changes, and regulated electrical, gas, mechanical, or plumbing work inside Apache Junction city limits.

    • Governmental entities acting in their governmental capacity are exempt from obtaining a permit but may apply without paying the required fee.
    • Exemptions include specified small accessory structures, fences, retaining walls, water tanks, and certain exterior concrete; exemptions do not authorize code violations.
    “shall first make application to the Building and Safety Manager and obtain the required permit or permits.”
  • Building code adoptedAdopted

    Building construction inside Apache Junction city limits.

    • The code page identifies adoption by reference and amendments to the 2018 International Building Code.
    “7-2-1 Adoption by reference [...] 7-2-2 Amendments to the 2018 International Building Code”
  • InspectionsRequired

    Permitted construction or work inside Apache Junction city limits.

    • Required inspections are determined at plan review based on the proposed work.
    • The permit holder must keep work accessible and exposed and must request inspections.
    “Construction or work for which a permit is required shall be subject to inspection by the Building and Safety Manager”
  • Certificate of occupancyRequired

    Use or occupancy of buildings and structures inside Apache Junction city limits.

    • A certificate of occupancy or other authorization is required before use or occupancy.
    • For new commercial projects, tenant improvements, and change in use, required approvals include applicable planning, public works, fire, sewer, and water approvals, followed by final inspection.
    “No building or structure shall be used or occupied [...] until the Building and Safety Manager has issued a certificate of occupancy”
  • Local zoningPresent

    Land inside Apache Junction city limits; the city publishes and administers a Chapter 1 Zoning Ordinance in its Land Development Code.

    “APACHE JUNCTION CITY CODE VOLUME II LAND DEVELOPMENT CODE [...] CHAPTER 1: ZONING ORDINANCE [...] CHAPTER 2: SUBDIVISION AND MINOR LAND DIVISION REGULATIONS”
  • Minimum lot sizeDistrict specific (with conditions)

    Residential zoning districts under Table 5-2: RS-GR and RS-54/RS-54M require 1.25 acres; RS-20/RS-20M 20,000 square feet; RS-10/RS-10M 10,000 square feet; RS-7/RS-7M 7,000 square feet; RS-5 5,000 square feet; RM-1 3,350 square feet; RM-2 1,980 square feet; RM-3 1,089 square feet; MHP 3,111 square feet; RV 2,178 square feet per dwelling unit.

    • Minimum lot area is calculated as net land area except RS-GR, RS-54, and RS-54M, which use gross land area.

    minimum lot area: 1.25 acres; 20,000 sf; 10,000 sf; 7,000 sf; 5,000 sf; 3,350 sf; 1,980 sf; 1,089 sf; 3,111 sf; or 2,178 sf (varies by district)

    “Minimum Lot Area per Dwelling Unit 1 | 1.25 acres | 1.25 acres | 20,000 sf. | 10,000 sf. | 7,000 sf. | 5,000 sf. | 3,350 sf. | 1,980 sf. | 1,089 sf. | 3,111 sf. | 2,178 sf.”
  • SetbacksDistrict specific (with conditions)

    Residential districts under Table 5-2; setbacks vary by district and structure type.

    • Accessory structures housing large livestock, excluding equine, require 50-foot side, rear, and front setbacks; small livestock and fowl require 15-foot side and rear setbacks; equine structures follow standard accessory-structure setbacks.

    main-structure front setback: 20-40 feet in RS districts; 20 feet in RM districts; 8 feet MHP; 3 feet RV (varies by district) · main-structure rear setback: 15-40 feet in RS districts; 20 feet RM-1/RM-2/RM-3; 10 feet MHP; 5 feet RV (varies by district)

    “Minimum Front Setback Setback (main structure)”
  • Lot coverageDistrict specific (with conditions)

    Residential districts under Table 5-2.

    • Maximum lot coverage varies by district; MHP and RV are listed as NA.

    maximum lot coverage: 20%-70% percent (MHP and RV listed NA)

    “Max. Lot Coverage6 | 30% | 20% | 30% | 40% | 50% | 60% | 50% | 50% | 70% | NA | NA”
  • Building heightDistrict specific (with conditions)

    Residential districts under Table 5-2.

    • Maximum main-structure height varies by district; accessory-structure height also varies by district.

    maximum main-structure height: 30-60 feet in RS/RM districts; 15 feet MHP and RV feet (varies by district)

    “Maximum Height for Main Structure | 35 ft. | 35 ft. | 35 ft. | 30 ft. | 30 ft. | 30 ft. | 35 ft. | 40 ft. | 60 ft. | 15 ft. | 15 ft.”
  • Camping on your landLimited

    Temporary RV, motor-home, fifth-wheel, or existing legal manufactured-home residence during construction on a single-family residentially zoned property.

    • Allowed for up to 8 months while a home is being constructed.
    • Subject to compliance with the main building's setback requirements.
    • Temporary utility connections require proper permitting.

    maximum temporary construction occupancy: <= 8 months (while a home is being constructed on a single-family residentially zoned property)

    “for up to 8 months while a home is being constructed on a single-family residentially zoned property”
  • Manufactured homesLimited

    Manufactured homes on single-family lots and in manufactured-home or RV parks inside Apache Junction city limits.

    • Single-family-lot manufactured homes are limited to RS-GR, RS-54M, RS-20M, RS-10M, and RS-7M districts.
    • They require a permanent foundation approved by the Arizona Office of Manufactured Housing.
    • No more than one manufactured home is permitted on a single-family zoned lot.
    • Parks require MHP or RVP zoning and have area, space-size, width, height, and setback limits.

    maximum manufactured homes per single-family lot: <= 1 home · maximum park height: <= 15 feet (manufactured-home and RV parks)

    “Manufactured homes may only be located within the RS-GR, RS-54M, RS-20M, RS-10M and RS-7M single-family residential districts.”
  • Accessory dwellingsAllowed

    Accessory dwelling units in the listed residential districts: RS-GR, RS-54, RS-54M, RS-20, RS-20M, RS-10, RS-10M, RS-7, RS-7M, RS-5, and RM-1.

    • The use table marks accessory dwelling units P, meaning permitted by right, subject to all other applicable standards and the cited accessory-dwelling regulations.
    “Accessory Dwelling Unit 5 | P | P | P | P | P | P | P | P | P | P”
  • Subdividing landRegulated (with conditions)

    Subdivision and minor land division inside Apache Junction city limits.

    • The code includes platting procedures, subdivision design standards, construction assurances, administrative subdivisions, land splits/minor land division, lot-line adjustments, and lot combinations.
    “CHAPTER 2: SUBDIVISION AND MINOR LAND DIVISION REGULATIONS”
  • Building in a floodplainLimited

    Development in regulated floodplain areas inside Apache Junction city limits.

    • The city code establishes floodplain administration, development permits, standards of construction, utility standards, and additional development standards including subdivisions.
    • The precise permit triggers and exceptions were not extracted from the individual sections.
    “Establishment of development permit [...] Standards of construction [...] Additional development standards, including subdivisions”
  • Permit processPartial

    Building permit process inside Apache Junction city limits.

    • Application must be made to the Building and Safety Manager before regulated work begins.
    • Inspection requests are made by the permit holder when work is ready.
    • Required inspections are determined during plan review.
    “Any owner or authorized agent who intends to construct, enlarge, alter, repair, move, demolish, or change the occupancy of a building or structure [...] shall first make application to the Building and Safety Manager and obtain the required permit or permits.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Apache Junction or Pinal County directly.

  • Owner-builder exemption — Owner-builder exemption for construction inside Apache Junction city limits.
  • Minimum dwelling size — Minimum dwelling size inside Apache Junction city limits.
  • Tiny homes — Tiny-home occupancy inside Apache Junction city limits.
  • Who permits septic — Septic authority inside Apache Junction city limits.
  • Septic permit — Septic permit requirements inside Apache Junction city limits.
8 more unanswered
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Short-term rentals
  • Permit fees

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Apache Junction publishes no rule on the point, not that none exists. Pinal County’s page lists the county offices to call.

← All of Pinal County: county rules, score and offices