Bolthole Index

Santa Cruz County, Arizona

Building permits, zoning and land rules in Santa Cruz County, Arizona

41Index Score / 100
#9 of 15 in Arizona

Unincorporated Santa Cruz County, Arizona applies county building codes, and installing a mobile home or manufactured house requires a building permit12. County zoning governs unincorporated land3. Santa Cruz County Environmental Health handles conventional septic permits; other onsite wastewater permits go directly to ADEQ4.

At a glance

Building permit
County building codes apply in unincorporated areas; mobile-home and manufactured-house installation requires a building permit12
Building inspections
Required through the county permit process for covered work in unincorporated areas5
Zoning
County-administered zoning and land-use controls apply outside municipal limits3
Septic
County permits conventional systems; other onsite wastewater permits go directly through ADEQ4
Owner-builder
Conditional option that does not waive the building permit6
Accessory dwelling
Allowed with size, siting, safety and wastewater conditions7
RV or tiny-home living
No permanent RV residence on a residential lot; temporary-use approval allows 30 days, or six months while building in GR-40, GR and SR8

Who to call

Building permits

Santa Cruz County Building Department

Building permits, plan review and inspections under the county building code for unincorporated Santa Cruz County

520-375-7800

permitting@santacruzcountyaz.gov

2150 North Congress Drive, Nogales, AZ 85621

Planning & zoning

Santa Cruz County Community Development (Planning & Zoning)

Land use planning, zoning, development plan approvals and zoning code enforcement for unincorporated Santa Cruz County

520-375-7930

2150 N. Congress Dr., Suite #206, Nogales, AZ 85621

Septic permits

Santa Cruz County Environmental Health

Conventional septic system permits and inspections for Santa Cruz County

520-375-7900

2150 North Congress Drive, Nogales, AZ 85621

Floodplain permits

Santa Cruz County Flood Control District and Floodplain Administration

Flood-hazard information and requirements for development in flood-prone areas

520-375-7685

2150 N. Congress Dr, Ste 206, Nogales, AZ 85621

Roads & driveways

Santa Cruz County Public Works

Right-of-way permits for new driveways and other work in county rights-of-way

520-375-7830

2150 N. Congress Drive, Nogales, AZ 85621

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

Off-grid gear

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

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Do you need a building permit in Santa Cruz County, Arizona?

Unincorporated Santa Cruz County applies its adopted building codes to construction, with plan review and inspections for covered work19. Installing a mobile home or manufactured house requires a building permit, with inspection of the foundation, electrical and plumbing hookups, HVAC and component assembly2. An owner-builder must sign the county form and still obtain the building permit; the project must not be intended for sale or rent for at least one year after completion6. The owner or employees perform the work, with licensed contractors doing other work and the owner responsible for employee taxes and workers’ compensation10. A qualifying agricultural exemption does not waive every health, septic or floodplain requirement11.

Who is the Santa Cruz County building department, and how do you reach them?

Santa Cruz County Building Department handles permits, plan review and inspections for unincorporated Santa Cruz County at 2150 North Congress Drive in Nogales; call 520-375-7800 or email permitting@santacruzcountyaz.gov12. Online applications are submitted by email, with one payment at plan submittal and another when the permit is issued13. The county uses inspections to monitor progress and document completion at the stages required for permitted work5. Planning and zoning questions go separately to Community Development at 520-375-793014. We could not confirm published construction-permit fee amounts, so ask the Building Department for current costs before setting a budget12.

Does Santa Cruz County have zoning?

Santa Cruz County administers zoning and land-use controls in unincorporated areas; the district standards below apply there315. District rules differ: the General Rural-40 district requires 36 acres and 350 feet of lot width for a single-family dwelling, 50-foot front, side and rear setbacks, and a maximum building height of 35 feet151617. Urban Units instead set minimum dwelling sizes from 900 to 1,200 square feet according to lot size18. Accessory dwellings are allowed on an unincorporated parcel with a principal single-family dwelling, mobile home or manufactured-housing unit, subject to size, siting, safety and wastewater rules7. Ask Planning to confirm the parcel's district before relying on any one standard14.

How do septic permits work in Santa Cruz County?

Santa Cruz County Environmental Health handles conventional residential and commercial septic permits; other onsite wastewater treatment facility permits go directly through ADEQ4. Off-grid wastewater systems still require the applicable county or ADEQ approval19. A conventional-system applicant submits a Notice of Intent to Construct, and the county reviews plans and inspects new installations and major repairs2021. In subdivisions, each lot must connect to an available central sewer unless the County Health Department approves another option22. Only about 14.7% of county soils rate free of severe limitations for conventional drain fields, so investigate septic feasibility early23. On resale, the seller obtains a transfer inspection within six months before transfer; the buyer submits a Notice of Transfer within 15 calendar days afterward24.

Can you live in an RV or tiny home on your land in Santa Cruz County?

An RV cannot serve as a permanent residence on a residential lot in unincorporated Santa Cruz County; temporary residential use unrelated to home construction requires a temporary use permit and is limited to 30 days8. In GR-40, GR and SR districts, an RV or mobile home may be used for up to six months while building, with a temporary use permit, a building permit for the permanent residence on the same property and Environmental Health approval of sanitary waste disposal8. A six-month extension is possible; after 12 months, an appeal to the Board of Adjustments is required8. Santa Cruz County does not define tiny homes separately, so ask Community Development whether a wheeled unit qualifies as an RV or mobile home814. A foundation alone does not make a small home a manufactured house: the definition requires a multi-sectional factory-built residence at least 20 feet by 40 feet and other construction qualifications25. Qualifying manufactured homes are allowed only in MFR for permanent residential use and need a building permit, permanent masonry foundation and compliant installation25.

What are the steps to build a home in Santa Cruz County?

  1. Ask Community Development to identify the zoning district and confirm the allowed use, lot size and setbacks1426.
  2. Ask Floodplain Administration whether the site is in a regulated flood or erosion hazard area; a Floodplain Use Permit is required before covered development begins, and structures subject to that permit need an approved Elevation Certificate before a Certificate of Occupancy272829.
  3. Take a conventional septic proposal to Environmental Health, or the appropriate nonconventional onsite wastewater proposal directly to ADEQ4.
  4. Confirm water: Arizona well requirements vary by well type and location, and a domestic well on a parcel of five acres or less needs local health review before state submittal30.
  5. Obtain a county right-of-way permit for a new driveway in county right-of-way, or work with ADOT for state-highway access3132.
  6. Email the building application and plans to the Building Department, then schedule every required inspection135.

What should you check before buying land in Santa Cruz County?

Confirm the parcel’s zoning district with Community Development before relying on district-specific lot sizes or setbacks141516. New driveway construction in county right-of-way needs a permit, and covered floodplain development needs a Floodplain Use Permit before work begins3128. A proposed unincorporated subdivision needs tentative and final plat approval before lots can be sold33. Subdivision water may come from a utility or shared or individual wells; wells must be developed before lot sales, and shared systems require an Arizona Registered Engineer’s design and installation oversight and approval34. Arizona law allows short-term rentals subject to authorized county regulation, but we could not confirm Santa Cruz County’s local licensing requirements; ask Community Development before planning rental income3514. The owner-builder option separately bars intent to sell or rent for at least one year after completion6.

Watch-outs

  • A structure subject to a Santa Cruz County Floodplain Use Permit needs an Elevation Certificate reviewed and approved by the Flood Control District before a Certificate of Occupancy can issue36.
  • Required landscaping must be installed before a Certificate of Occupancy can issue for developments subject to county landscaping rules37.
  • We could not confirm the classification or occupancy rules for a smaller foundation-built tiny home that does not meet the manufactured-house definition; ask Community Development before buying a unit2514.

Sources

  1. Building Department, quoted and re-checked
  2. Santa Cruz County Zoning and Development Code, quoted and re-checked
  3. Community Development, quoted and re-checked
  4. Onsite Wastewater Treatment Facility (Septic System), quoted and re-checked
  5. Building Department, quoted and re-checked
  6. Owner/Builder Form, quoted and re-checked
  7. Santa Cruz County Zoning and Development Code (2024 ADU Update), quoted and re-checked
  8. Santa Cruz County Zoning and Development Code 2024_ADU Update, quoted and re-checked
  9. Building Department | Santa Cruz County, AZ, quoted and re-checked
  10. Owner/Builder Form, quoted and re-checked
  11. A.R.S. § 11-865 — Exemptions; exception, quoted and re-checked
  12. Santa Cruz County Building Department (santacruzcountyaz.gov)
  13. Building Department, quoted and re-checked
  14. Santa Cruz County Community Development (Planning & Zoning) (santacruzcountyaz.gov)
  15. Santa Cruz County Zoning and Development Code, quoted and re-checked
  16. Santa Cruz County Zoning and Development Code, quoted and re-checked
  17. Santa Cruz County Zoning and Development Code, quoted and re-checked
  18. Santa Cruz County Zoning and Development Code, quoted and re-checked
  19. Onsite Wastewater Treatment Facility, quoted and re-checked
  20. Onsite Wastewater Treatment Facility (Septic System), quoted and re-checked
  21. Environmental Health, quoted and re-checked
  22. Santa Cruz County Zoning and Development Code, quoted and re-checked
  23. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  24. Inspection and Notice of Transfer, quoted and re-checked
  25. Santa Cruz County Zoning and Development Code 2024 ADU Update, quoted and re-checked
  26. Santa Cruz County Zoning and Development Code, quoted and re-checked
  27. Santa Cruz County Flood Control District and Floodplain Administration (santacruzcountyaz.gov)
  28. Floodplain and Erosion Hazard Management Ordinance 2021, quoted and re-checked
  29. santacruzcountyaz.gov, quoted and re-checked
  30. azwater.gov, quoted and re-checked
  31. Right of Way, quoted and re-checked
  32. Encroachment Permits Guideline & Procedures 2024 (Arizona statewide rule), quoted and re-checked
  33. Santa Cruz County Zoning and Development Code, quoted and re-checked
  34. Santa Cruz County Zoning and Development Code, quoted and re-checked
  35. azleg.gov, quoted and re-checked
  36. santacruzcountyaz.gov, quoted and re-checked
  37. Santa Cruz County Zoning and Development Code 2024_ADU Update, quoted and re-checked

Written October 10, 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.

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Compared with neighboring counties

Unlike 5 of its 6 neighbors, Santa Cruz County requires a building permit only in limited cases.

RuleSanta Cruz CountyPima CountyCochise CountyPinal CountyGraham CountyGreenlee CountyGila County
Building permitLimitedRequiredRequiredRequiredRequiredLimitedRequired
County zoningYesYesYesYesYesYesYes
Septic permitsCounty Env. Health Div.Pima CountyCounty Health Dept.County Air Quality & Env. HealthCounty Dept. of Health & Human ServicesCounty Health Dept.County Community Development Div.

County locator

Santa Cruz County in Arizona

41
County map
Santa Cruz County highlighted among the Arizona counties · colored by Index score

How Santa Cruz County scores

Seclusion58100% ev.
Self-Sufficiency21100% ev.
Admin Boringness62100% ev.
Durability25100% ev.
Property Autonomy65100% ev.
Carry Cost84100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$283kTypical home
0.6%Property tax
$2,575Land / acre
17.6"Annual rain
34.6% of yrsSevere drought
21.3 / yr (+15.3)Mid-century 100°F days
53.8 daysMid-century dry spell
1.26" (+7.2%)Mid-century 1-day rain
1.15×Wildfire change factor
100%Forward climate coverage
$1,448Home insurance / yr
1.6% / yrInsurance growth
1.35%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
34,686People within 30 min
1,317,372People within 2 hr
25,189Radius comparison (15 mi)
39.8People / sq mi
55.4%Federal land
40.1%Land at 15% slope or less
14.7%Soils rated "not limited" for septic (strict USDA rating)
79,860 acWorkable land screen
24.9%Wooded land
6.4 tonsBiomass / forest ac
61.5°FAvg temp

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Cities and towns in Santa Cruz County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet researched: Town of Patagonia

Answers from the rulebook for Santa Cruz County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Santa Cruz County rules

  • Building permitLimited

    Installation of a mobile home or manufactured house in Santa Cruz County.

    • The County Code expressly requires a building permit for installation of a mobile home or manufactured house.
    • The inspection scope includes, but is not limited to, the foundation, electrical hookup, plumbing hookup, HVAC, and component assembly.
    • The surrounding code provisions place manufactured homes in the MFR district and mobile homes in the MH district for permanent residential use.
    “A building permit shall be required for the installation of a mobile home or a manufactured house in Santa Cruz County. The items inspected shall include but be limited to the foundation, electrical hookup, plumbing hookup, HVAC and the component assembly.”
    2 more reviewed findings on this topic
    • Limited — Installation of a mobile home or manufactured house in Santa Cruz County, including applicable unincorporated county areas.
      “A building permit shall be required for the installation of a mobile home or a manufactured house in Santa Cruz County. The items inspected shall include but be limited to the foundation, electrical hookup, plumbing hookup, HVAC and the component assembly.”
    • Limited — Installation of a manufactured housing unit in unincorporated Santa Cruz County.
      “The 2012 International Building Codes became effective for all construction in the unincorporated areas of the County on September 1, 2013.”
  • Owner-builder exemptionConditional

    An owner acting as owner-builder for a county building permit in unincorporated Santa Cruz County.

    • The owner must own the property and identify the referenced permit.
    • The project must not be intended for sale or rent for at least one year after completion.
    • The owner must perform the work personally or jointly with employees and is responsible for applicable taxes and workers’ compensation.
    • Duly licensed contractors must perform work not done by the owner or the owner’s employees, and their names and license numbers must be listed.
    • Falsification to evade state licensing laws is identified on the form as a Class 2 misdemeanor under Arizona Revised Statutes §13-2704.
    • The form is an owner-builder process document and does not waive the requirement to obtain a building permit.

    minimum post-completion period before sale or rent: >= 1 year

    “(owner/builder) for the above referenced permit, which is not intended for sale or rent for at least one year after completion of the project.”
    2 more reviewed findings on this topic
    • Conditional — An owner-builder applying for a County building permit.
      “The undersigned hereby swears and affirms that I am the owner(s) of the Property (owner/builder) for the above referenced permit, which is not intended for sale or rent for at least one year after completion of the project. Further, all work will be performed by myself, or jointly with my employees, for whom I will be responsible for payment of all applicable taxes and worker’s compensation. Duly licensed contractors, whose names & license numbers are listed below, will perform any of the work not performed by myself or my employees.”
    • Conditional — An owner applying for a Santa Cruz County building permit as an owner/builder.
      “(owner/builder) for the above referenced permit, which is not intended for sale or rent for at least one year after completion of the project.”
  • Building code adoptedAdopted (with conditions)

    Construction in the unincorporated areas of Santa Cruz County, Arizona, where the county building code applies.

    • The 2012 International Building Codes became effective for all construction in the unincorporated areas of the county on September 1, 2013.
    • The county Building Department also provides services to cities that have entered into intergovernmental agreements with the county.
    • The county building code regulates use, occupancy, location, and quality of construction materials through plan reviews and inspections.

    code edition: 2012 International Building Codes · effective date: 2013-09-01

    “The 2012 International Building Codes became effective for all construction in the unincorporated areas of the County on September 1, 2013.”
  • InspectionsRequired

    Buildings and structures subject to the Santa Cruz County Building Code in unincorporated Santa Cruz County.

    • Inspections are required as provided by the County Code.
    • The Building Department also provides inspection services to cities that have entered into intergovernmental agreements with the county.
    • For permit applications, the applicant requests inspections necessary to monitor progress and document completion at all stages of the permitted work.
    “through plan reviews and inspections of buildings and structures as required by our County Code.”
    One more reviewed finding on this topic
    • Required — Buildings and structures in unincorporated Santa Cruz County subject to the county building code and permit process.
      “if my permit is approved and issued, I request all inspections necessary to monitor progress, and document completion at all stages of the work”
  • Certificate of occupancyLimited

    Developments in unincorporated Santa Cruz County subject to the county landscaping requirements.

    • A landscape plan is required for all developments within the County in all zoning districts.
    • The required landscaping must be installed before the certificate of occupancy may be issued.
    • The cited provision does not establish that a certificate of occupancy is required for every type of construction; it establishes a condition governing issuance where a certificate of occupancy applies.
    • Incorporated municipalities may have separate occupancy procedures unless covered by an intergovernmental agreement.
    “A certificate of occupancy shall not be issued until the required landscaping has been installed.”
    2 more reviewed findings on this topic
    • Limited — Structures subject to Floodplain Use Permits administered by the Santa Cruz County Flood Control District.
      “As a condition of all Floodplain Use Permits for structures, the Santa Cruz County Flood Control District (District) requires an Elevation Certificate to be completed and then submitted for review and approval by the District prior to the issuance of the Certificate of Occupancy.”
    • Limited — Structures subject to a Santa Cruz County Floodplain Use Permit.
      “requires an Elevation Certificate to be completed and [...] submitted for review and approval by the District prior to the issuance of the Certificate of Occupancy.”
  • County-wide zoningPresent (with conditions)

    Santa Cruz County's county-administered zoning and land-use controls, including the county Zoning and Development Code and Planning & Zoning Commission processes.

    • The county website identifies Planning as responsible for land use planning, zoning, development plan approvals, and zoning code enforcement.
    • Conditional Use Permits and other land-development approvals may be required depending on the applicable zoning district and proposed use.
    “Planning - Land use planning, zoning, development plan approvals, and zoning code enforcement.”
  • Local zoningVaries (with conditions)

    Aggregate local-zoning conclusion for Santa Cruz County: county zoning applies in county-administered areas, while incorporated jurisdictions such as the City of Nogales administer their own zoning and development standards within city limits.

    • This is an aggregate countywide claim and does not assert that Santa Cruz County administers municipal zoning ordinances.
    • For parcels inside Nogales, the City of Nogales zoning and development standards apply; county rules may differ in unincorporated areas and other jurisdictions.
    “The City of Nogales, Arizona updated the Development Standard Code (DSC). The updated Zoning and Development Standards Code complies with Federal laws, State Statutes, and City Code, and is consistent with the Nogales General Plan, adopted by City Council on August 5, 2020.”
  • Zoning districtsPublished

    Zoning districts in the portion of Santa Cruz County outside the corporate limits of municipalities.

    • The official zoning district maps are part of the ordinance and have the same force and effect as the ordinance.
    • The code separately identifies zoning districts and boundaries for areas outside municipal corporate limits.
    “For the purpose of this Ordinance that part of Santa Cruz County outside the corporate limits of any municipality is hereby classified into the following zoning districts:”
  • Minimum dwelling sizeDistrict specific (with conditions)

    Single-family dwelling units in the county's Urban Units zoning provisions.

    • The standard excludes carports, breezeways, and open patios and porches.
    • Garages, utility rooms, and roofed, screened patios up to 200 square feet are included.

    minimum floor area for lot less than 7,500 square feet: >= 900 square feet · minimum floor area for lot 7,500 to 10,000 square feet: >= 1100 square feet · minimum floor area for lot greater than 10,000 square feet: >= 1200 square feet

    “A. The minimum size of all single-family dwellings (exclusive of carports, breezeways and open patios and porches) and including garages, utility rooms, and roofed, screened patios of a maximum of 200 square feet, shall be as follows: 1. A minimum floor area of 900 square feet shall be required for single-family dwelling units constructed on a lot less than 7,500 square feet. 2. A minimum floor area of 1,100 square feet shall be required for a single-family dwelling unit constructed on lot 7,500 to 10,000 square feet. 3. A minimum floor area of 1,200 square feet shall be required for a single-family dwelling unit constructed on a lot greater than 10,000 square feet.”
  • Minimum lot sizeSpecified

    Single-family dwellings in the General Rural-40 (GR-40) zoning district in unincorporated Santa Cruz County.

    • The cited standard is district-specific; other zoning districts have different standards.
    • Other requirements are imposed by Article 11 parking standards.

    minimum lot area: >= 36 acres · minimum lot width: >= 350 feet

    “B. Single Family Dwelling. 1. Minimum Lot Area: Thirty-six (36) acres. 2. Minimum Lot Width: Three hundred fifty (350) feet.”
  • SetbacksSpecified

    Single-family dwellings in the General Rural-40 (GR-40) zoning district in unincorporated Santa Cruz County.

    • All lot sizes and setbacks are minimum requirements.
    • The cited standard is district-specific; other zoning districts have different standards.

    minimum front yard setback: >= 50 feet · minimum side yard setback: >= 50 feet · minimum rear yard setback: >= 50 feet

    “B. Single Family Dwelling. 1. Minimum Lot Area: Thirty-six (36) acres. 2. Minimum Lot Width: Three hundred fifty (350) feet. 3. Minimum Front Yard Setback: Fifty (50) feet. 4. Minimum Side Yard Setback: Fifty (50) feet. 5. Minimum Rear Yard Setback: Fifty (50) feet.”
  • Building heightSpecified

    Single-family dwellings in the General Rural-40 (GR-40) zoning district in unincorporated Santa Cruz County.

    • The cited standard is district-specific; other zoning districts and uses may have different standards.
    • Other requirements are imposed by Article 11 parking standards.

    maximum building height: <= 35 feet

    “B. Single Family Dwelling. 1. Minimum Lot Area: Thirty-six (36) acres. 2. Minimum Lot Width: Three hundred fifty (350) feet. 3. Minimum Front Yard Setback: Fifty (50) feet. 4. Minimum Side Yard Setback: Fifty (50) feet. 5. Minimum Rear Yard Setback: Fifty (50) feet. 6. Maximum Building Height: Thirty-five (35) feet. 7. Other Requirements: As required by Article 11 (Parking Standards).”
  • Tiny homesLimited

    A tiny home on wheels proposed for residential occupancy in unincorporated Santa Cruz County, including units that may fall within the county's recreational-vehicle or mobile-home definitions.

    • The code does not expressly define or use the term tiny home or tiny house.
    • A recreation vehicle is a chassis-and-wheels unit designed for temporary human occupancy as a residence, no more than 8 feet wide, no more than 40 feet long, and no more than 320 square feet, excluding the hitch or tongue from length measurement; examples include travel trailers, camping trailers, truck campers, boats, self-contained vehicles, and commercially built motor homes.
    • A Recreation Vehicle / Park Model (Destination) is designed for and used for permanent residential use in a travel trailer/recreation vehicle park and is not self-contained.
    • Recreational vehicles are permitted only in designated RV or mobile-home parks for temporary residential purposes; in mobile-home parks they must be in a separate area and not intermingled with mobile homes.
    • Temporary residential use of mobile homes and recreation vehicles is allowed only in GR-40, GR, and SR zoning districts, for up to six months, with a temporary use permit.
    • That temporary-use permit requires a building permit for construction of a permanent residence on the same property and review and approval of the sanitary waste disposal system by the Santa Cruz County Environmental Health Department; the permit is issued by the Building Inspector concurrently with the building permit.
    • The temporary permit may be extended for six months with a corresponding six-month building-permit extension; after the first 12 months, an appeal to the Board of Adjustments is required, and the mobile home must be removed after permit expiration or before certificate of occupancy.
    • An RV temporary-use permit of no more than 30 days may be issued in any residential area for temporary residential use unrelated to construction of a new home.
    • No more than two RVs may be stored on a residential lot, only in rear or side yards, with one screened from public view; an RV may not be used permanently and may be used temporarily for no more than 30 days with a temporary-use permit.
    • A mobile home is defined as over 33 feet long or 10 feet or more wide and designed for human occupancy as a residence; it is distinct from manufactured homes and recreation vehicles. Mobile homes are permitted only in approved mobile-home parks and mobile-home subdivisions in the MH Zone for permanent residential purposes.
    • Mobile-home installation requires a building permit, and residential occupancy in an MH district requires appropriate securing mechanisms and a ventilated skirt.

    maximum RV width: <= 8 feet · maximum RV length: <= 40 feet (Hitch and/or tongue excluded.) · maximum RV floor area: <= 320 square feet · temporary residential period: <= 6 months (GR-40, GR, and SR only; temporary use permit required.) · residential-lot RV storage: <= 2 vehicles (One must be screened from public view; rear or side yards only.) · non-construction temporary RV use: <= 30 days (Temporary use permit required.)

    “Recreation Vehicle - A vehicular or portable unit mounted on a chassis and wheels, designed and constructed for temporary human occupancy as a residence, not more than eight (8’) feet in width and no more than forty (40) feet in length and containing no more than three hundred twenty (320) square feet in total floor area. [...] An RV shall not be used for permanent residential purposes; however, it may be used for temporary residential purposes for a period not to exceed thirty (30) days with the issuance of a temporary use permit.”
    2 more reviewed findings on this topic
    • Limited — A foundation-installed tiny home that satisfies Santa Cruz County's definition of a manufactured house or manufactured home.
      “Manufactured Homes shall only be permitted in the MFR Zone for permanent residential purposes.”
    • Limited — A tiny home on a permanent foundation that is proposed as a permanent residence in unincorporated Santa Cruz County and that satisfies the county's manufactured-house or manufactured-home classification.
      “Manufactured House - A multi-sectional factory built home not exceeding two (2) stories in height and manufactured after June 15, 1976, that when joined, forms a residence for human occupancy that measures twenty (20) feet by forty (40) feet or larger and is designed to be installed on a permanent foundation. [...] Manufactured Homes shall only be permitted in the MFR Zone for permanent residential purposes.”
  • Accessory dwellingsAllowed (with conditions)

    Accessory dwelling units on lots or parcels with a principal single-family dwelling, mobile home, or manufactured-housing unit in the unincorporated county.

    • The rule applies within the county's Area of Jurisdiction, defined as the part of the County without the corporate limits of any municipality.
    • ADUs must conform to applicable building, fire, sensitive-environmental-area, wildfire-prevention, emergency-vehicle-access, drainage, flood-control, public-health and safety regulations, including applicable county health and ADEQ onsite-wastewater codes.
    • At least one attached and one detached ADU are allowed per lot or parcel.
    • On lots or parcels of at least one acre, one additional detached ADU is permitted.
    • The ADU interior habitable area may not exceed 75 percent of the principal dwelling's interior habitable area or 1,000 square feet, whichever is less.
    • Detached ADUs may not be located in front of the principal structure; side and rear setbacks are at least five feet; maximum building height is 35 feet; ADUs may not be separately owned except through an approved land-division process; and ADUs may not be built on a current or planned public-utility easement without required written utility consent.

    attached ADUs per lot or parcel: 1 ADU · detached ADUs per lot or parcel: 1 ADU (One additional detached ADU is permitted on lots or parcels one acre or more.) · minimum parcel size for additional detached ADU: >= 1 acre · maximum ADU interior habitable area: <= 75 percent of principal dwelling area (Or 1,000 square feet, whichever is less.) · maximum detached ADU side and rear setback reduction: >= 5 feet · maximum ADU building height: <= 35 feet

    “one additional detached ADU is permitted”
  • Who permits septicCounty

    Conventional septic systems for residential and commercial properties in Santa Cruz County.

    • Santa Cruz County manages conventional septic-system permits; all other OWTF permits must be obtained directly from ADEQ.
    “Santa Cruz County manages Conventional Septic Systems permits for residential and commercial properties, while all other permits must be obtained directly from ADEQ.”
  • Septic permitRequired

    Conventional septic systems for residential and commercial properties in Santa Cruz County.

    • The county manages conventional septic-system permits.
    • Other OWTF permit types must be obtained directly from ADEQ.
    “The permitting process requires applicants to submit a Notice of Intent to Construct an onsite wastewater treatment facility that meets state design requirements.”
  • Septic inspectionRequired

    All new septic systems installed in Santa Cruz County and major septic-system repairs.

    • The county reviews plans and conducts inspections of all new septic systems installed in the county.
    • The county also inspects major septic-system repairs.
    “Therefore, we review the plans for and conduct inspections of all new septic systems being installed in the county. We also inspect any major repairs to septic systems.”
  • Off-grid sanitationLimited

    Off-grid wastewater treatment through onsite wastewater treatment facilities in Santa Cruz County, including areas without sewer connection.

    • OWTFs are used for locations without a sewer connection.
    • Conventional systems require Santa Cruz County permitting and county inspection of new installations.
    • Other OWTF permit types must be obtained directly from ADEQ.
    • Applicable sewage-treatment standards and County Health Department and ADEQ requirements apply.
    “Today, there are estimated to be more than 600,000 systems in the State providing wastewater treatment for locations that do not have a sewer connection.”
  • Mandatory utility hookupWater (with conditions)

    Each lot in a subdivision governed by the Santa Cruz County Zoning and Development Code.

    • Water may be provided through a new water utility, an existing water provider, or shared or individual wells.
    • Shared well systems must be designed by and installed under inspection and approval of an Arizona Registered Engineer.
    • The wells must be developed before sale of the lots.
    “Water shall be provided to every lot either through provision of a new water utility, service by an existing water provider or through shared or individual wells which shall be developed prior to sale of the lot(s).”
    One more reviewed finding on this topic
    • Sewer (with conditions) — Each lot in a subdivision governed by the Santa Cruz County Zoning and Development Code.
      “A sanitary sewer connection shall be provided to each lot when a central collection system is available, unless other options are approved by the County Health Department.”
  • Subdividing landRegulated (with conditions)

    Subdivision of land in Santa Cruz County outside a city or town.

    • A tentative plat and a final plat must be approved before a person may subdivide, file a record of survey, map, or plat for recording, or sell any part of the subdivision.
    • A preliminary informational meeting with the developer and Director is required before the application will be processed.
    • Proposed subdivisions must meet zoning-district requirements and applicable subdivision minimum requirements.
    • Floodplain, water-supply, access, utility, health, and building-code requirements also apply as stated in the ordinance.

    minimum lots for subdivision definition: >= 6 lots, parcels, or fractional interests (The ordinance excludes certain leasehold offerings of one year or less, parcels each 36 acres or more, and specified agricultural, apartment, commercial, recreational-vehicle, manufactured-home, mobile-home-park, and cemetery arrangements.)

    “These subdivision regulations shall apply and govern the subdivision of all land within the area of jurisdiction. [...] Until a Tentative Plat and a Final Plat of a subdivision have been approved in accordance with this chapter no person proposing a subdivision within Santa Cruz County outside a city or town shall subdivide or file a record of survey, map or plat for recording; or sell any part of said subdivision.”
  • Driveway accessRequired

    Access serving proposed development and new driveway construction in unincorporated Santa Cruz County.

    • Legal access must be sufficient in width to serve all proposed development and paved to minimum County Standards.
    • All proposed access points for future developments must be shown.
    • New driveway construction or other construction work in the County right-of-way requires a permit.
    • For State rights-of-way, ADOT review and any required ADOT permit apply.
    • A one-foot no-access easement is required where access is restricted.

    no-access easement: 1 foot (Along frontage where access is to be restricted.)

    “The County Public Works Department is the administrating authority of the right-of-way (ROW) within the unincorporated areas of the county. [...] Under the existing ordinance any construction work (e.g., utility construction / relocation / replacement or new driveway construction) or any activity (e.g., organized events, parades, festivals, marathons etc.) in the ROW requires a permit.”
  • Building in a floodplainRequired

    Construction or development, including placement of manufactured homes, within areas of special flood hazard, regulatory floodplains, or erosion hazard areas in the unincorporated portion of Santa Cruz County.

    • The ordinance applies within Santa Cruz County except incorporated cities and towns that have adopted an ordinance or resolution under A.R.S. §48-3610.
    • A Floodplain Use Permit must be obtained before construction or development begins.
    • The permit application must be made on forms furnished by the Floodplain Administrator.
    • The Floodplain Administrator may require scaled plans, elevation information, floodproofing certification, watercourse-alteration descriptions, cross-sections, channel profiles, construction and materials specifications, sanitary-facility information, an engineering study, and other pertinent information where applicable or necessary.
    • No county license, permit, or similar approval may be issued for development conflicting with the ordinance; any conflicting approval is null and void.
    • Permits may include deed restrictions, performance bonds, assurances, security, elevation requirements, floodproofing, drainage, water-supply, and waste-disposal conditions.
    • A permit may be denied for development not conforming to the ordinance or other applicable law, or that constitutes a danger or hazard to life or property.
    • Before pouring the first slab or the finished-floor inspection, an initial elevation certification prepared by an Arizona registered land surveyor or civil engineer must be submitted; a final certificate must be prepared before issuance of the Certificate of Occupancy.
    • The county Flood Control District also states that an Elevation Certificate is required as a condition of all Floodplain Use Permits for structures and must be submitted for review and approval before issuance of the Certificate of Occupancy.
    • Statutory exemptions include certain public highways, roads, streets, livestock or wildlife dams, erosion-control structures that do not divert, retard, or obstruct the natural channel, certain mining facilities, certain public-agency construction, and other construction determined by the Board to need no written authorization; plans must still be submitted for review and comment where the ordinance requires.
    • The exemptions do not apply to uses that divert, retard, or obstruct water flow and create a danger or hazard to life or property.
    • Existing legal uses and certain reasonable repairs or alterations may be exempt, but substantial alterations or repairs that increase flood-damage potential by 50 percent or more must be floodproofed or elevated to or above the regulatory flood elevation.

    minimum freeboard for habitable structures: 1 foot · substantial improvement threshold: >= 50 percent of market value (The ordinance contains separate statutory and nonconforming-use exceptions.)

    “A Floodplain Use Permit shall be obtained before construction or development, including placement of manufactured homes, begins within any area of special flood hazard”
  • Permit processPublished (with conditions)

    County building-permit applications and payments in unincorporated Santa Cruz County.

    • The Building Department provides plan review and inspection services in unincorporated areas.
    • Online applications are submitted by email to permitting@santacruzcountyaz.gov.
    • Two payments are required: one at plan submittal and one when the permit is issued.
    • The permit fee payment is not accepted until the permit is issued.

    payment stages: plan submittal and permit issuance

    “For online applications, please email: permitting@santacruzcountyaz.gov Two payments will be required: One at the time of the plan submittal One when the permit is issued The permit fee payment will not be accepted until the permit is issued.”

Arizona rules that apply here

  • Lot coverageDistrict specific (with conditions)

    County zoning regulations in Arizona's unincorporated county zoning districts.

    • A county board of supervisors may establish the percentage of a lot or parcel that may be covered by buildings.
    • The applicable percentage depends on the county zoning ordinance and district; this record does not supply a universal numeric percentage.

    maximum building lot coverage: percentage established by applicable county zoning ordinance percent

    “May establish the percentage of a lot or parcel that may be covered by buildings”
  • Camping on your landLimited

    Parking and camping along open roads in closed areas governed by A.R.S. § 17-452 restrictions.

    • Camping is allowed only along open roads in the specified closed areas.
    • No vehicle may be parked or operated more than 300 feet from the road.

    maximum distance from open road: <= 300 feet

    “Parking and camping shall be allowed along open roads in closed areas, except that no vehicle shall be parked or operated at a distance greater than three hundred feet from such roads.”
  • Well permitLimited

    Water-production wells in Arizona, including Santa Cruz County, with requirements varying by well type and whether the location is in an Active Management Area.

    • The common Notice of Intent to Drill form applies to exempt wells with pumps of 35 gallons per minute or less in AMAs and to any water-production well outside an AMA.
    • Non-exempt wells in an AMA use other permit forms.
    • All wells should have a registration number.
    • For domestic use on parcels of five or fewer acres, the county or local health authority must review the application before submittal to ADWR.
    • ADWR approval does not override other local requirements or ordinances.

    exempt-well pump capacity: <= 35 gallons per minute · domestic parcel size for prior local health review: <= 5 acres

    “This form is used for exempt (pumps 35 gallons per minute or less), water-production wells in Active Management Areas (AMAs) or for any water-production well outside of an AMA.”
  • Agricultural exemptionConditional

    Construction of a hoophouse or polyhouse used exclusively for producing and storing live plants in Arizona counties.

    • The structure must not have a permanent anchoring system.
    • No temporary or permanent storage of solvents, fertilizers, gases, chemicals, or flammable materials is allowed.
    • The structure must not be wider than thirty-one feet and must have an unobstructed path of not more than one hundred fifty feet from any point to a door or fully accessible wall.
    • The covering must be no greater than twelve mils thick, comply with NFPA 701, and provide approximately four pounds of maximum impact resistance for egress.
    • Electrical or mechanical devices subject to county codes and backflow-prevention devices connected to potable water still require permits.
    • The structure must comply with county height, setback, and lot-coverage requirements for detached accessory buildings or structures.
    • A county may establish an administrative review process.

    maximum width: <= 31 feet · maximum unobstructed path to exit: <= 150 feet · maximum covering thickness: <= 12 mils

    “construction of a hoophouse or polyhouse is exempt from county building permit requirements”
    4 more reviewed findings on this topic
    • Available (with conditions) — Construction or operation incidental to farming, dairying, agriculture, viticulture, horticulture, stock raising, or poultry raising under the state-law exemption from the cited county-planning article.
      “A. This article does not apply to: 1. Construction or operation incidental to construction and repair to irrigation and drainage ditches or appurtenances thereto, of regularly constituted districts or reclamation districts, or to farming, dairying, agriculture, viticulture, horticulture or stock or poultry raising, or clearing or other work on land in rural areas for fire prevention purposes.”
    • Conditional — County zoning ordinances authorized under A.R.S. chapter 11; use or occupation of land or improvements for general agricultural purposes on tracts of five or more contiguous commercial acres.
      “Prevent, restrict or otherwise regulate the use or occupation of land or improvements for [...] general agricultural purposes, if the tract concerned is five or more contiguous commercial acres.”
    • Conditional — Construction or operation incidental to irrigation and drainage ditches, farming, dairying, agriculture, viticulture, horticulture, stock or poultry raising, and specified rural fire-prevention work under the building-code article referenced by A.R.S. § 11-865.
      “This article does not apply to: 1. Construction or operation incidental to [...] farming, dairying, agriculture, viticulture, horticulture or stock or poultry raising”
    • Available (with conditions) — Leasing agricultural lands under Arizona's statutory definition of subdivision or subdivided lands.
      “(c) Does not include: [...] (iii) The leasing of agricultural lands or apartments, offices, stores, hotels, motels, pads or similar space within an apartment building, industrial building, rental recreational vehicle community, rental manufactured home community, rental mobile home park or commercial building.”
  • Short-term rentalsAllowed (with conditions)

    Vacation rentals and short-term rentals, including in unincorporated Santa Cruz County, subject to the county regulations authorized by A.R.S. § 11-269.17.

    • A county may regulate short-term rentals within unincorporated areas for specified health and safety, use and zoning, nuisance, prohibited-activity, emergency-contact, licensing, notification, insurance, and accessory-dwelling-unit-residency purposes.
    • A county may require a local regulatory permit or license, with a fee not exceeding the actual issuance cost or $250, whichever is less.
    • A county may require liability insurance of at least $500,000 in the aggregate or equivalent marketplace coverage.
    • Nonresidential uses such as special events, retail, restaurants, banquet spaces, and similar uses are excluded.

    maximum local permit/license fee: <= 250 USD (The fee may not exceed the actual cost of issuing the permit or license if that cost is less than $250.) · minimum liability insurance: >= 500000 USD aggregate (Equivalent or greater coverage through an online lodging marketplace is allowed.)

    “A. A county may not prohibit vacation rentals or short-term rentals. B. A county may not restrict the use of or regulate vacation rentals or short-term rentals based on their classification, use or occupancy except as provided in this section.”
  • Campground & park staysLimited

    The Arizona Recreational Vehicle Long-Term Rental Space Act applies to a recreational-vehicle space rented in a recreational-vehicle park or mobile-home park by the same tenant for more than 180 consecutive days, and to park-model or park-trailer spaces rented by the same tenant for more than 180 consecutive days.

    • For an ordinary recreational-vehicle space, the space must be rented under a rental agreement.
    • For a park model or park trailer, the chapter applies without regard to whether a rental agreement is executed.
    • The chapter does not apply to mobile homes, manufactured homes or factory-built buildings.
    • The chapter does not apply to a property with one or two recreational-vehicle rental spaces.

    occupancy duration: > 180 consecutive days · same tenant: required · property recreational-vehicle rental spaces: <= 2 spaces (The chapter does not apply to a property with one or two recreational-vehicle rental spaces.)

    “This chapter applies to, regulates and determines rights, obligations and remedies for a recreational vehicle space that is rented in a recreational vehicle park or”
    One more reviewed finding on this topic
    • Limited — Occupancy or use of a mobile home brought into Arizona, or movement of a mobile home from one Arizona mobile-home park to another Arizona mobile-home park.
      “unless it meets the standards adopted pursuant to this chapter and displays the proper state certificate.”
  • county zoning authorityGeneral

    Arizona county boards of supervisors adopting zoning for the county area outside incorporated municipalities, including unincorporated land.

    • The statutory definition of county area of jurisdiction is the part of the county outside the corporate limits of any municipality.
    • The zoning ordinance and rezonings and zoning-regulation amendments must be consistent with and conform to the adopted comprehensive plan.
    • The board must consider individual property rights and personal liberties before adopting a zoning ordinance.
    • The statute does not authorize dedications, exactions, fees, or other requirements not otherwise authorized by law.
    • The statute does not authorize regulation or restriction of railroad, mining, metallurgical, grazing, or general agricultural uses on tracts of five or more contiguous commercial acres, subject to the statutory cannabis and marijuana qualification.
    “Pursuant to this article, the board of supervisors may adopt a zoning ordinance in order to conserve and promote the public health, safety, convenience and general welfare.”
  • county building authorityGeneral

    Arizona county boards of supervisors requiring building permits and adopting building, related, and fire-prevention codes for construction in unincorporated areas, including residential construction.

    • Except in cities and towns with an ordinance relating to building permits, the board of supervisors shall require a permit for construction or additions exceeding $1,000 within its jurisdiction.
    • A county building code under section 11-861 applies to unincorporated areas of the county so zoned, and the board may exempt areas zoned rural or unclassified.
    • Building codes may be adopted by reference only after notice and hearings before the county planning and zoning commission and board of supervisors.
    • Authorized building, electrical, plumbing and mechanical codes must be adopted by a qualifying national code organization or by the largest city in the county; if a city code is adopted, the county must adopt notified changes within 90 days or terminate the adopted city code.
    • A fire-prevention code may be adopted in unincorporated areas where a fire district has not adopted a nationally recognized fire code; it remains effective until a fire district is established and adopts an applicable code.
    • The board may adopt a current wildland-urban interface code using written public-participation procedures.
    • Certain single-family and two-family residential sprinkler requirements are restricted, subject to the statutory exception for codes adopted before December 31, 2009.
    • A county may not deny a building permit based on the proposed capable and authorized utility provider, and may not require a transaction privilege tax or business license as a permit condition.
    • A county may recover reasonable costs associated with reviewing and issuing a building permit.

    building permit construction-cost threshold: > 1000 USD (The requirement does not apply in cities and towns that have an ordinance relating to issuance of building permits.) · city-code change adoption deadline: 90 days (If the county adopts a city code and does not adopt the same notified change within 90 days, it must terminate the adopted city code.) · preexisting sprinkler-code exception date: 2009-12-31 (The statutory sprinkler restriction does not apply to a code or ordinance requiring sprinklers in a residence that was adopted before December 31, 2009.)

    “In any county that has adopted zoning pursuant to this chapter, the board of supervisors may adopt and enforce, for the unincorporated areas of the county so zoned, a building code and other related codes to regulate the quality, type of material and workmanship of all aspects of construction of buildings or structures, except that the board may authorize that areas zoned rural or unclassified may be exempt from the provisions of the code adopted.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Permit fees — Published county construction-permit fee amounts or fee schedules for construction in unincorporated Santa Cruz County.

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.

Water rights & wells in Santa Cruz County

Whether a new home can legally get its own water here — the sub-state groundwater regime, from Arizona’s water agency.

Managed area

Groundwater is actively managed here, but a small household well is generally still available.

Household wellExempt — no permit or water right

Small non-irrigation 'exempt' wells (pump capacity 35 gpm or less) are allowed statewide, including inside Active Management Areas and INAs, but must be registered with ADWR; outside any AMA/INA groundwater is essentially rule of capture. Inside an AMA a new subdivision or large use must show an Assured Water Supply.

Limit: exempt well = pump capacity 35 gpm or less (A.R.S. §45-454)

Arizona Dept of Water Resources — Exempt Well ↗

Prior-appropriation state (first in time, first in right). Groundwater rules change and basin boundaries follow the aquifer, not the county line — confirm current well and appropriation rules with the Arizona state water agency before you buy or drill.Groundwater governance as of Jul 2026, cited to each administering agency.

Living off-grid in Santa Cruz County, Arizona

Is Santa Cruz County a good place to live off-grid or homestead?

Santa Cruz County scores 41/100 on the Bolthole Index, a marginal county profile. Its strengths: manageable long-term carry cost and a stronger property-autonomy legal backdrop. Watch-outs: thin water margin (17.6″/yr rainfall) and elevated mid-century heat, water, rain, or wildfire exposure.

Do you need a building permit in Santa Cruz County, Arizona?

Santa Cruz County requires a building permit only in limited cases (such as floodplains or specific zones), and it enforces county zoning. Onsite septic is permitted by Santa Cruz County Environmental Health Division. Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Santa Cruz County, Arizona?

Land in Santa Cruz County runs about $2,575 per acre, based on the latest county data.

What is the water situation in Santa Cruz County?

Santa Cruz County gets about 17.6" of rain a year, with severe drought in roughly 34.6% of years. On water rights, Santa Cruz County lies in the Santa Cruz Active Management Area — Safe-yield management; new subdivisions must demonstrate an Assured Water Supply; small domestic exempt wells (≤35 gpm) still allowed..

How remote is Santa Cruz County?

A representative private-land location has about 34,686 people within a 30-minute drive and 1,317,372 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Santa Cruz compares in Arizona

Compare side-by-side →See all 15 Arizona counties ranked →