Building a home in Arizona: the first 10 steps

    Written by the Hydra Pest Control team, Arizona-licensed (license #9790)

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    Start by confirming who has jurisdiction over your land: the county for unincorporated land, or the city or town inside its limits. Then line up the survey, builder, septic or sewer, Arizona 811 locates, permits and inspections. Plan the termite pre-treatment before the slab is poured, and the final grade treatment after grading is done. Check early whether your lender requires a termite pre-treatment.

    General information, not legal advice.

    The first 10 steps

    1. Vet the land

      Look into zoning, setbacks, access, utilities, water and flood zone before you commit. Ask the planning office that has jurisdiction over the parcel.

      Source: Graham County Planning & Zoning, Cochise County Development Services: Residential Projects

    2. Confirm jurisdiction

      Find out which office issues permits for your parcel. Gila Valley: Graham County Planning & Zoning issues building permits, and the City of Safford and the Town of Thatcher handle permits inside their limits; see who issues building permits in Graham County. Greenlee County and Willcox: see the Gila Valley, Greenlee County and Willcox section below. Sierra Vista area: Cochise County Development Services says a residential building permit is required for a new home in unincorporated Cochise County (online portal; 520-432-9300); inside Sierra Vista or another city, contact that city. White Mountains: ask Navajo or Apache County, or your town (for example Show Low, Pinetop-Lakeside, Snowflake, Taylor, Springerville or Eagar), which office handles your parcel.

      Source: Graham County Planning & Zoning, City of Safford Planning & Community Development, Town of Thatcher Planning & Zoning, Cochise County Development Services: Residential Projects, Greenlee County Planning and Zoning, City of Willcox Building Permits

    3. Survey and grading

      Ask your permit office what it needs with your plans; Cochise County, for example, lists its residential submittals online. Grading matters for termite protection later: AZDA asks homeowners to report slab or foundation-soil disturbance to the company that treated the home.

      Source: Cochise County Development Services: Residential Projects, AZDA Homeowner Termite Guidance

    4. Decide who builds

      Use a licensed contractor (the Arizona Registrar of Contractors licenses contractors), or look at the owner-builder exemption in A.R.S. 32-1121(A)(5). That exemption only applies if the home is not intended for sale or rent, and selling or renting it, or offering to, within one year of completion is prima facie evidence it was built for sale or rent. Some cities have owner-builder forms; the City of Safford, for example, offers a 'Contractor License Exceptions for Home Owners' form. General information, not legal advice.

      Source: A.R.S. 32-1121, City of Safford Building/Development Permits & Codes, Arizona Registrar of Contractors

    5. Septic or sewer

      Outside sewer service, ask your county about septic permits. In Graham County, the Septic & Wastewater page has the septic system application, permit requirements and setback requirements.

      Source: Graham County Septic & Wastewater

    6. Call Arizona 811 before you dig

      Arizona law (A.R.S. 40-360.22) gives facility operators up to two working days to mark lines. Don't dig until marking is done.

      Source: Arizona 811, A.R.S. 40-360.22

    7. Submit plans and apply for your building permit

      Apply with the office that has jurisdiction (see step 2). In Graham County, see who issues building permits in Graham County.

      Source: Graham County Planning & Zoning, City of Safford Building/Development Permits & Codes, Town of Thatcher Planning & Zoning, Cochise County Development Services: Residential Projects

    8. Choose your termite pre-treatment company before the slab pour

      Arizona rules (R3-8-308(D)) require a horizontal termiticide barrier before the slab under roof is poured, a vertical barrier in critical areas such as plumbing penetrations and the inside of stem walls, and a tag posted at the site. Read what to ask a pre-treatment company and who chooses the pre-treatment company. Check whether your loan requires it: see does your lender require a termite pre-treatment?.

      Source: Ariz. Admin. Code R3-8-308

    9. Inspections

      For permitted work, the building inspectors at your permit office inspect at set stages. The City of Safford's Residential Building Inspection Checklist, for example, includes foundation, concrete slab or under-floor, framing and final inspections. Ask your office for its list. A private home inspection is optional and separate from these permit inspections.

      Source: City of Safford Residential Building Inspection Checklist, Graham County Planning & Zoning, Arizona Board of Technical Registration: Home Inspections General Information

    10. Final grade, landscaping and records

      Arizona rules require the final grade treatment within 18 months of the original pre-treatment, once grading and construction soil disturbance are complete (R3-8-308(F)(1)). Recent update: this deadline was adjusted from 12 to 18 months; some public statute and rule pages still show 12 months while they are updated. Current rule: R3-8-308(F)(1). The treating company files an eTARF with the Arizona Department of Agriculture within 30 days of a pretreatment and of a final grade. Keep treatment records with your closing documents. AZDA's landscaping cautions: don't regrade so water drains toward the house, keep drip irrigation away from the slab, don't let wood bridge soil and siding, keep dense plants about 16 inches back from the foundation, and don't pour cool-deck or concrete flush against the foundation. More in the final grade guide.

      Source: Ariz. Admin. Code R3-8-308, AZDA Pest Management FAQs (eTARF), AZDA Homeowner Termite Guidance

    Building in the Gila Valley, Greenlee County and Willcox

    Graham County, the City of Safford and the Town of Thatcher each issue permits in their own area. See who issues building permits in Graham County. The City of Safford's posted design criteria list termite damage risk as 'moderate to heavy.'

    In Greenlee County, County Planning and Zoning issues building permits for site-built homes in unincorporated areas, and the County Health Department issues septic and manufactured home permits. Inside town limits, the Town of Clifton's Building Department issues construction permits, and the Town of Duncan has its own building permit application. Willcox is a city in Cochise County with its own building permits page; outside city limits, Cochise County Development Services handles residential permits. For anywhere else, including Morenci, check with Greenlee County, Cochise County or your town.

    You have a choice of pre-treatment company. Ask about products, methods, records and final grade follow-up, using our pre-treatment checklist. We do pre-treatments across the Gila Valley, Greenlee County and Willcox: Safford, Thatcher, Pima, Clifton, Duncan, Morenci, Willcox and surrounding areas.

    Source: Greenlee County Planning and Zoning, Town of Clifton Code Enforcement/Building, Town of Duncan Building Permits & Fees, City of Willcox Building Permits, Cochise County Comprehensive Plan 2045 (adopted), Cochise County Development Services: Residential Projects

    Building in Sierra Vista and Cochise County

    Cochise County Development Services says a residential building permit is required to build a new home in unincorporated Cochise County, and applications are made online. Inside Sierra Vista or another city, contact that city.

    You have a choice of pre-treatment company. Ask each one about products, methods, records and final grade follow-up. See our pre-treatment checklist, our Sierra Vista service area and termite control in Sierra Vista.

    Building in the White Mountains (Navajo and Apache Counties)

    Cold winters don't keep subterranean termites out of the high country. University of Arizona Cooperative Extension says the arid-land subterranean termite is found throughout Arizona, and U.S. Forest Service researchers have collected it on the Mogollon Rim at 6,000 to 7,000 feet. Read do you need a termite pre-treatment in the White Mountains?

    We do pre-treatments in Show Low, Pinetop-Lakeside, Snowflake, Heber-Overgaard and Eagar. See also termite control in the White Mountains.

    Does your lender require a termite pre-treatment?

    It depends on the loan. FHA requires a builder's termite guarantee (form HUD-NPMA-99-A) on new construction, and Arizona isn't one of HUD's exception areas. VA uses the same forms. USDA and conventional loans leave it to the lender. Paying cash? No lender rule applies, but the soil under the slab can only be treated before the pour. Details: does your lender require a termite pre-treatment?

    Lender rules aren't the only requirement. The International Residential Code calls for termite protection in areas a local building department marks as subject to termite damage in its design criteria table (Table R301.2). That's Section R305 in the 2024 edition and Section R318 in earlier editions. The City of Safford, which follows the 2024 code, lists termite damage risk as 'moderate to heavy' in its posted design criteria. What applies to you depends on the code your city, town or county has adopted, so ask your local building department.

    Source: International Code Council: 2024 International Residential Code, Chapter 3, City of Safford Building/Development Permits & Codes

    Frequently asked

    Who issues building permits for a new home in Arizona?

    It depends on where the land is. In the Gila Valley, Graham County Planning & Zoning, the City of Safford or the Town of Thatcher. In Greenlee County, Greenlee County Planning and Zoning for unincorporated land, or the Town of Clifton or Duncan inside their limits. In Willcox, the City of Willcox. Around Sierra Vista, Cochise County Development Services for unincorporated land, or the city. In the White Mountains, ask Navajo or Apache County, or your town.

    Can I build my own house in Arizona?

    A.R.S. 32-1121(A)(5) has an owner-builder exemption, but it only applies if the home is not intended for sale or rent. Selling or renting it, or offering to, within one year of completion is prima facie evidence it was built for sale or rent. General information, not legal advice.

    When does the termite pre-treatment happen?

    Before the slab under roof is poured. Arizona rules (R3-8-308(D)) require a horizontal termiticide barrier before the pour and a vertical barrier in critical areas such as plumbing penetrations and the inside of stem walls.

    When is the final grade treatment done?

    After grading and construction soil disturbance are complete, and within 18 months of the original pre-treatment (R3-8-308(F)(1)).

    Do I need a termite pre-treatment in the White Mountains?

    Plan on one. Subterranean termites are found throughout Arizona, including the Mogollon Rim at 6,000 to 7,000 feet, and they're easy to miss in colder areas. See our White Mountains guide.

    Does my lender require a termite pre-treatment?

    FHA requires a builder's termite guarantee (form HUD-NPMA-99-A) on new construction across Arizona, and VA uses the same forms. USDA and conventional loans leave it to the lender. Ask your lender before the slab is poured.

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