Bolthole Index

Pinal County, Arizona

Building permits, zoning and septic rules in Eloy, Arizona

For construction in Eloy, Arizona, start with the city’s Building Safety office, which explains building permits, plan review and inspections.1 Eloy administers its own zoning, while Pinal County issues septic permits inside city limits, with written approval from the responsible wastewater agency required first.23 We could not confirm a complete city building-permit exemption list; ask Eloy Building Safety about your proposed work before starting.1

At a glance

Building permits
Start with Eloy Building Safety; the city reviews construction and explains whether a building permit is needed.1
Zoning
Eloy publishes its own zoning ordinance; Community Development reviews zoning applications.42
Septic permits
Pinal County issues septic permits inside Eloy, after written approval from the responsible wastewater agency.35
Accessory dwellings
Eloy offers an ADU plan program; applicable zoning requirements and a building permit application still apply.6
Owner-builder
Arizona has a conditional contractor-license exemption for owner occupancy; the exemption does not remove local building-permit requirements.7
Before moving in
Eloy generally requires a certificate of occupancy before building use or occupancy, with exceptions for specified exempt work and accessory structures not designed for human occupancy.8

Who to call

Building permits

City of Eloy Building Safety

Construction questions, building permit review and building inspections inside Eloy city limits

520-466-2578

595 N. C Street, Suite 102

Online permits →

Zoning

City of Eloy Community Development Department

Zoning and subdivision application review inside Eloy city limits

520-466-2578

595 N. C Street, Suite 102

Online permits →

Septic permits

Pinal County Aquifer Protection Division

Septic applications and inspections, and small-parcel well application review

520-509-3555

[email protected]

85 N Florence Street First Floor

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 Eloy means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Eloy, AZ?

Eloy Building Safety tells applicants to visit the department before beginning construction; the city’s process may include a building permit, plan review and inspection.1 Eloy has adopted the 2018 International Building Codes and the 2017 National Electric Code with local amendments for construction activity inside city limits.9 We could not confirm a complete list of city permit exemptions, so ask Building Safety to classify your home, remodel or outbuilding before work begins.1 Arizona’s owner-builder exemption concerns contractor licensing for qualifying owner-occupied projects, and does not itself waive a local building permit.7

Who handles building permits and zoning in Eloy?

Eloy Building Safety is the starting office for construction, building plan review and inspection questions inside the city.1 Eloy Community Development reviews zoning and subdivision applications, so take the proposed use and parcel details to the city for land-use review.2 Both city offices list their contact location as 595 N. C Street, Suite 102, and phone 520-466-2578.12 The Building Safety page links building permit applications, checklists, forms and handouts.1 Septic approval follows a separate route through Pinal County Aquifer Protection, including inside Eloy city limits.3

Does Eloy have zoning, and can you live in an RV or tiny home?

Eloy publishes a city zoning ordinance and directs readers to the current Chapter 21-Zoning code.4 We could not confirm Eloy’s private-land RV occupancy rule or residential lot-size, setback and minimum-dwelling-size requirements; ask Eloy Community Development to review the proposed use and parcel before buying.2 Eloy’s ADU plan program allows construction-document submissions, but applicable zoning and city requirements and a building permit application still apply.6 The ADU program therefore provides a route for a proposed accessory dwelling, rather than a blanket approval for a tiny home on any parcel.6

How do septic permits work inside Eloy?

Pinal County requires an on-site wastewater permit before construction of a new septic facility or repair or alteration of an existing facility inside Eloy.5 Before the county issues a septic permit in an incorporated area, the applicant must present written approval from the agency or district responsible for wastewater disposal.3 When an Eloy property has no sewer connection option, a septic permit is required.10 Pinal County’s application instructions call for completing the linked PDF and emailing it to [email protected], and a qualified inspector must conduct a site inspection.11 The septic facility cannot be covered or operated until final construction inspection and county approval to discharge.12

What are the steps to build a home in Eloy?

  1. Ask Eloy Community Development to review the proposed land use and any zoning or subdivision application needs.2
  2. Visit Eloy Building Safety before construction to establish the building permit, plan-review and inspection process for the project.1
  3. If using septic, obtain written wastewater-agency approval and the Pinal County septic permit before septic construction.35
  4. Keep permitted building work uncovered until inspection, with the city-approved building plan, site plan and inspection card on the job site for every inspection.13
  5. Obtain final septic inspection and approval to discharge before covering or operating the septic facility.12
  6. Obtain Eloy’s required certificate of occupancy before using or occupying the home; a temporary certificate depends on safe occupancy and required inspections.8

What stays with Pinal County, and what should Eloy buyers check?

Septic permitting stays with Pinal County for Eloy properties, with the responsible wastewater agency’s written approval required before the county issues the septic permit.3 For a proposed well, Arizona requires a Notice of Intent to Drill before new drilling, deepening or modification, and a licensed well-drilling contractor must perform the work.14 Pinal County Aquifer Protection reviews well applications for referral to the Arizona Department of Water Resources on parcels of 5 acres and smaller.11 For land outside Eloy city limits, see the Pinal County guide: the county’s residential building-permit rules describe unincorporated land.15

Watch-outs

  • We could not confirm permission to occupy an RV while building in Eloy; ask Eloy Community Development about the proposed parcel and use before relying on an RV as housing.2
  • An Eloy building certificate of occupancy does not replace Pinal County’s final septic inspection and approval to discharge.812

Sources

  1. City of Eloy Building Safety (eloyaz.gov)
  2. City of Eloy Community Development Department (eloyaz.gov)
  3. Aquifer Protection (Septic & Wells) (Eloy), quoted and re-checked
  4. Zoning Ordinance (Eloy), quoted and re-checked
  5. Pinal County Environmental Health Code (Eloy), quoted and re-checked
  6. Preapproved Housing Design Plan Program (Eloy), quoted and re-checked
  7. Persons not required to be licensed; penalties; applicability (Arizona statewide rule), quoted and re-checked
  8. 2018 Code Amendments (Eloy), quoted and re-checked
  9. Updated Building Permit Fees (Eloy), quoted and re-checked
  10. Aquifer Protection (Septic & Wells) (Eloy), quoted and re-checked
  11. Pinal County Aquifer Protection Division (pinal.gov)
  12. Pinal County Environmental Health Code (Eloy), quoted and re-checked
  13. Inspection Request (Eloy), quoted and re-checked
  14. Well Drilling in Arizona, quoted and re-checked
  15. Building Safety (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 Eloy

Eloy’s own rules

  • Building code adoptedAdopted

    All construction activity in the City of Eloy.

    • Local amendments apply.

    International Building Codes: 2018 (with local amendments) · National Electric Code: 2017 (with local amendments)

    “The Eloy City Council has adopted the 2018 International Building Codes and the 2017 National Electric Code with local amendments for all construction activity in the City of Eloy.”
  • InspectionsRequired

    Permitted construction work inside Eloy city limits.

    • Work must remain uncovered until inspection.
    • The approved building plan, site plan, and inspection card must be on site for every inspection.
    • Special inspections may be required.
    “Work may not be covered prior to inspection. A copy of the City approved Building Plan, Site Plan and this Inspection Card MUST be on the job site for EVERY inspection. Special Inspections may be required. Refer to the plans for Special Inspections requirements.”
  • Certificate of occupancyRequired

    Buildings and structures inside Eloy city limits before use, occupancy, or a change in occupancy classification.

    • The exception is for work exempt from building permits under Section 105.2 and structures not designed for human occupancy and accessory in nature.
    • All required signatures or conditions of approval must be satisfied.
    • A temporary certificate may be issued before full completion only if the portion can be occupied safely and required inspections occur.
    “A certificate of occupancy shall be required for all buildings or structures prior to any use, occupancy or change from the existing occupancy classification. The certificate of occupancy shall be issued by the Building Official and is not to be construed as an approval of a violation of the provisions of this code or of other ordinances of the jurisdiction. Exception: Certificates of occupancy are not required for work exempt from building permits under Section 105.2 of this code and where structures are not designed for human occupancy and accessory in nature.”
  • Zoning districtsPublished

    Land inside Eloy city limits.

    • The City publishes its zoning ordinance page and directs users to the current Chapter 21-Zoning code.
    “Please see the City Code and Ordinances page for the most up-to-date versions of the Zoning Ordinance, Chapter 21-Zoning; click here.”
  • Accessory dwellingsLimited

    Accessory dwelling units inside Eloy city limits.

    • ADU construction documents may be submitted through the City's preapproved-plan program.
    • Use remains subject to applicable zoning and city requirements and a building permit application.
    “Accessory Dwelling Units (ADUs) - Designs with a square foot of any of the following sizes: 200, 600, or 1,000 square feet, with at least three elevation options.”
  • Who permits septicCounty

    On-site wastewater systems inside Eloy city limits; Pinal County administers the septic program, including incorporated areas, subject to wastewater-agency approval.

    • The county program is delegated by ADEQ according to the county Community Development description.
    • For an incorporated area, written approval from the agency or district responsible for wastewater disposal must be presented before the county issues the permit.
    “Before an on-site wastewater permit for construction of an on-site wastewater treatment facility to be located in an incorporated area of the county or within a community facilities district, wastewater improvement district or a sanitary district is issued, written approval from the agency or district responsible for wastewater disposal must be presented to Pinal County.”
  • Septic permitRequired

    New, repaired, or altered on-site wastewater treatment facilities inside Eloy city limits.

    • Written approval from the agency or district responsible for wastewater disposal is required for a facility in an incorporated area before Pinal County issues the permit.
    • Site investigation requirements under Arizona Administrative Code Title 18, Chapter 9, Articles 1 and 3 apply.
    “No person shall begin construction of a new on-site wastewater treatment facility or the repair or alteration of an existing on-site wastewater treatment facility without an on-site wastewater permit from Pinal County.”
  • Septic inspectionRequired

    On-site wastewater treatment facilities inside Eloy city limits.

    • A final construction inspection and Pinal County approval to discharge are required before covering or operating the facility.
    “No on-site wastewater treatment facility shall be covered or operated until a final construction inspection has been conducted and an approval to discharge from the on-site wastewater treatment facility has been issued by Pinal County.”
  • Off-grid sanitationLimited

    Properties inside Eloy city limits without a sewer connection option.

    • Pinal County requires a septic permit when there is no sewer connection option.
    • The system remains subject to county permitting, inspection, and approval-to-discharge requirements.
    “If your property does not have a sewer connection option, you must apply for a septic permit.”

Still unanswered

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

  • Building permit — Construction and remodeling inside Eloy city limits.
  • Owner-builder exemption — Owner-builders inside Eloy city limits.
  • Minimum dwelling size — Residential districts inside Eloy city limits.
  • Minimum lot size — Residential districts inside Eloy city limits.
  • Setbacks — Residential districts inside Eloy city limits.
11 more unanswered
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Manufactured homes
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

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 Eloy publishes no rule on the point, not that none exists. Pinal County’s page lists the county offices to call.

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