Bolthole Index

Cochise County, Arizona

Building permits, zoning and septic rules in Douglas, Arizona

Inside Douglas city limits in Cochise County, Arizona, the city requires a residential building permit for a new home, additions, fences, sheds and similar work1. The city also administers its own zoning2. Septic permits come from the Cochise County Health Department, not the city3. Land outside city limits follows the county's rules instead.

At a glance

Building permit
Required inside city limits for new homes, additions, manufactured homes, fences, sheds and pools1
Zoning
City of Douglas Planning & Zoning administers its own Zoning Code2
Septic
Permit required, processed by Cochise County Health Department43
Tiny houses
Allowed on permanent foundations as principal homes or ADUs in the IC-MU and IC-R overlays; elsewhere as ADUs by major conditional use5
Building code
2006 International codes plus Appendix Q for tiny houses6
Wells
Notice of Intent to Drill filed with ADWR7

Who to call

Building permits

City of Douglas Development Services (Building Permit & Plan Review, Planning & Zoning)

Building permits, plan review, zoning and subdivision review inside Douglas city limits

520-417-7329

permits@douglasaz.gov

425 E 10th Street, Douglas, AZ 85607

Septic permits

Cochise County Health Department, Environmental Health Services

Septic and alternative onsite wastewater system permits for Cochise County

520-432-9441

envhealth@cochise.az.gov

Contact details are copied from each office’s official page and were checked against it on October 16, 2026.

Off-grid gear

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

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Do you need a building permit in Douglas, Arizona?

Yes. The City of Douglas requires a residential permit to construct a new home, build additions, install a manufactured home, or put up porches, fences, sheds, ramadas, swimming pools and Jacuzzis1. Structures below three feet and poured cement for patios, sidewalks or planters do not need one1. The city enforces its adopted codes through inspections8.

Douglas adopted the 2006 editions of the International Building and Residential Codes, along with Appendix Q for tiny houses6. We could not confirm an owner-builder exemption for city limits; Cochise County's owner-builder program covers unincorporated parcels only, so ask the city permit office9 before assuming it applies.

Who issues building permits in Douglas, and how do you reach them?

The City of Douglas issues building permits itself through Development Services at 425 E 10th Street9. The permit office is reached at 520-417-7329 or permits@douglasaz.gov9. The city's Planning & Zoning section evaluates new construction, redevelopment, land use changes and subdivisions9. Cochise County's Development Services in Bisbee serves unincorporated land and handles building permits only for unincorporated land, so it is the wrong counter for an address inside Douglas10.

Does Douglas have zoning, and what does it mean for tiny houses and RVs?

Douglas runs its own zoning. The city reviews all projects for compliance with its Zoning Code, design standards and environmental considerations2. The city publishes a zoning map and links to the Zoning Code on Municode11. We could not confirm minimum lot sizes or minimum home size for single-family and rural-residential districts, so request a zoning verification from Planning & Zoning for a specific parcel9.

Tiny houses on permanent foundations are allowed as principal homes or accessory dwelling units in the IC-MU and IC-R overlays; outside those overlays, a tiny house as an ADU needs major conditional use approval, and height is capped at 20 feet in the tiny-home community districts5. State-licensed travel-vehicle tiny houses are treated like RVs and must be self-contained5. City parks allow overnight stays only in designated camping areas12. We could not confirm whether living in an RV on a private lot inside city limits is allowed; ask Planning & Zoning.

How do septic permits work inside Douglas?

Septic permits for property in Douglas come from the Cochise County Health Department, which processes the sewage-disposal application4. The Arizona Department of Environmental Quality delegates onsite wastewater permitting to the counties4. A soil and site evaluation must be done before applying3. A septic system matters only where city sewer does not serve the lot, so confirm sewer availability with the city first. Call Environmental Health Services at 520-432-944113. Wells are regulated by the Arizona Department of Water Resources, which must receive a Notice of Intent to Drill before a new well is drilled7.

How do you build a home in Douglas, step by step?

The city publishes a seven-step residential process14:

  1. Determine required planning approvals with Planning & Zoning.
  2. Understand construction permit requirements.
  3. Determine whether you need a licensed contractor.
  4. Prepare the required documents and apply for a permit.
  5. Wait while the permit is under review.
  6. Pay fees and obtain the permit.
  7. Pass construction inspections and complete the permit.

If the lot needs septic, apply separately to Cochise County Environmental Health3. Subdivisions and parcel splits are reviewed by Planning & Zoning15.

What stays with Cochise County, and what should you check before buying in Douglas?

Septic permits and the health department stay with Cochise County even inside city limits4. Land outside the city is a different answer: see the Cochise County page for unincorporated rules. Before buying, confirm that the parcel is inside city limits, ask Planning & Zoning for its district, and check sewer availability. Cochise County's typical home value is about $264,82916 and its effective property tax rate is 0.6%17.

Watch-outs

  • We could not confirm whether a certificate of occupancy is required for every building type inside Douglas; ask the city permit office9.
  • We could not confirm manufactured-home placement rules inside Douglas beyond the building permit requirement1; ask Planning & Zoning.
  • The city's adopted building codes are the 2006 editions, so older plans or newer-code assumptions may not match6.

Sources

  1. Building Safety and Planning and Zoning FAQs (Douglas), quoted and re-checked
  2. Planning & Zoning (Douglas), quoted and re-checked
  3. Septic Systems (Douglas), quoted and re-checked
  4. Septic Systems (Douglas), quoted and re-checked
  5. Section 326 Tiny homes and tiny home parks (Douglas), quoted and re-checked
  6. 15.04.010 Uniform building codes adopted by reference (Douglas), quoted and re-checked
  7. Cochise County FAQs (Douglas), quoted and re-checked
  8. Residential Construction (Douglas), quoted and re-checked
  9. City of Douglas Development Services (Building Permit & Plan Review, Planning & Zoning) (douglasaz.gov)
  10. Residential Projects, quoted and re-checked
  11. douglasaz.gov (Douglas), quoted and re-checked
  12. 12.28.030 Park and recreation areas (Douglas), quoted and re-checked
  13. Cochise County Health Department, Environmental Health Services (cochise.az.gov)
  14. Residential Construction (Douglas), quoted and re-checked
  15. Development Services (Douglas), quoted and re-checked
  16. Typical home value (Zillow): Bolthole Index county data
  17. Effective property tax rate: Bolthole Index county data

Written October 16, 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 Douglas

Douglas’s own rules

  • Building permitRequired

    Residential construction and listed residential work inside Douglas city limits.

    • A permit is not needed for structures below three feet or for pouring cement for patios, sidewalks, or planters.
    • The source also lists additions, manufactured homes, porches, fences, sheds, ramadas, swimming pools, Jacuzzis, gas-pressure testing, and electric-meter repair, replacement, or inspection as requiring a permit.
    “A residential permit is required when constructing a new home, constructing additions, installing a manufactured home, porches, fences, sheds, ramadas, swimming pools and Jacuzzis.”
  • Building code adoptedAdopted

    Construction inside Douglas city limits.

    • The adopted list includes the 2006 editions of the IBC, IRC, NEC, ICC Electrical, Plumbing, Fuel Gas, Mechanical, Existing Building, and Energy Conservation Codes, plus Appendix Q of the 2021 IRC for tiny houses.
    • Penalty provisions in the referenced codes are excluded.
    “the following uniform codes are approved, enacted and adopted by reference, except for any penalty provisions contained therein: the international building code, 2006 edition; international residential code, 2006 edition; national electrical code, 2005 edition; international code council electrical code, 2006 edition; international plumbing code, 2006 edition; international fuel gas code, 2006 edition; international mechanical code, 2006 edition; international existing building code, 2006 edition; international energy conservation code, 2006 edition, and appendix q (tiny houses) of the international residential code, 2021 edition”
  • InspectionsRequired

    Residential construction inside Douglas city limits.

    • The City’s residential-construction process includes construction inspections and permit completion.
    • The specific number and timing of inspections were not stated on the opened page.
    “Step 6: Pay Fees and Obtain Permit Step 7: Construction Inspections and Permit Completion”
  • Local zoningPresent

    Land inside Douglas city limits; the City administers zoning and reviews projects for compliance with its Zoning Code.

    • The City’s Planning & Zoning section evaluates new construction, redevelopment, land-use changes, and subdivisions.
    “This section evaluates new construction, redevelopment, land use changes, and subdivisions. Our goal is orderly, sustainable growth that maintains the unique character of Douglas. All projects are reviewed for compliance with the Zoning Code, design standards, and environmental considerations.”
  • Zoning districtsPublished

    Zoning districts and zoning maps inside Douglas city limits.

    • The City publishes links to a zoning-district map layout and its Zoning Code.
    • District-specific dimensional schedules were not fully retrieved in the opened materials.
    “zoning districts map layout [...] zoning code douglas, az municode library”
  • Camping on your landLimited

    Camping or overnight stays in Douglas city parks and recreation areas.

    • Camping or overnight stays are allowed only in areas designated for camping or overnight stays in vehicles or trailers, unless otherwise authorized by special-event permit or law.
    “it shall be unlawful for any person in a park and recreation area to: 1. camp or stay overnight anywhere except in areas designated for camping or staying overnight in vehicles or trailers unless otherwise authorized by special event permit or law.”
  • Tiny homesAllowed (with conditions)

    Tiny houses inside Douglas city limits.

    • Site-built and factory-built tiny houses permanently attached to approved foundations are allowed as principal uses or accessory dwelling units in IC-MU and IC-R overlays, subject to overlay standards and design guidelines.
    • As ADUs, they are allowed in zoning districts where ADUs are permitted; outside IC-MU and IC-R, the approval process is a major conditional use.
    • State-licensed travel-vehicle tiny houses are treated like recreational vehicles, must be self-contained, and are subject to RV placement and site-development standards.
    • Tiny houses must be built and inspected under adopted City building codes.

    Tiny Home Community District 1 parcel size: 1—1.99 acres · Tiny Home Community District 2 parcel size: 2—4.99 acres · Tiny Home Community District 5 parcel size: 5 acres and up acres · Tiny home maximum height: 20 feet (Applies to Districts 1, 2, and 5)

    “shall be allowed as an accessory dwelling unit in all zoning districts where accessory dwelling units are permitted uses and shall meet all the development standards and design guidelines of the zoning district in which they are placed.”
  • Subdividing landRegulated (with conditions)

    Subdivision and parcel-development activity inside Douglas city limits.

    • The City provides a subdivision application and evaluates subdivisions through Planning & Zoning.
    • Projects are reviewed for Zoning Code, design standards, and environmental considerations.
    “This section evaluates new construction, redevelopment, land use changes, and subdivisions. Our goal is orderly, sustainable growth that maintains the unique character of Douglas. All projects are reviewed for compliance with the Zoning Code, design standards, and environmental considerations.”
  • Permit processPublished

    Residential construction permits inside Douglas city limits.

    • The City’s published process includes determining planning approvals, understanding permit requirements, determining contractor licensing, preparing documents and applying, review, paying fees and obtaining the permit, then construction inspections and permit completion.
    “Step 1: Determine Required Planning Approvals Step 2: Understand Construction Permit Requirements Step 3: Determine If You Need a Licensed Contractor Step 4: Prepare Required Documents and Apply for a Permit Step 5: Permit Under Review Step 6: Pay Fees and Obtain Permit Step 7: Construction Inspections and Permit Completion”

Rules another office applies inside Douglas

Douglas does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Who permits septicCounty

    Onsite wastewater systems serving property inside Douglas city limits where the City sewer code does not otherwise apply; Cochise County Health Department processes the sewage-disposal application.

    • ADEQ delegates onsite-wastewater permitting authority to counties.
    • Alternative systems may be reviewed by ADEQ or the County Health Department depending on the system.
    “ADEQ has authority for issuing permits for OWTFs and has delegated this authority to each of the 15 counties, which issue permits on behalf of ADEQ.”
  • Septic permitRequired

    A sewage-disposal or onsite wastewater system serving property inside Douglas city limits where such a system is legally allowed.

    • A soil and site evaluation must be completed before applying.
    • Applications are accepted and processed through Cochise Health and Social Services.
    • Alternative systems may be reviewed by ADEQ or the Health Department depending on the system.
    “all wastewater systems are reviewed and permitted by the cochise county health department.”
  • Well permitRequired

    New groundwater wells and specified well work inside Douglas city limits.

    • The official county FAQ states that ADWR regulates and permits groundwater wells in Arizona.
    • A Notice of Intent to Drill must be filed with ADWR before drilling a new well, deepening, or modifying an existing well.
    “be advised, prior to drilling a new well, or deepening or modifying an existing well, a notice of intent to drill must be filed with adwr.”

Still unanswered

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

  • Owner-builder exemption — Owner-builder building-permit exemptions inside Douglas city limits.
  • Certificate of occupancy — Certificates of occupancy for buildings inside Douglas city limits.
  • Minimum dwelling size — Residential dwellings inside Douglas city limits.
  • Minimum lot size — Single-family and agricultural or rural-residential districts inside Douglas city limits.
  • Manufactured homes — Manufactured-home occupancy inside Douglas city limits.
2 more unanswered
  • Agricultural exemption
  • 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 Douglas publishes no rule on the point, not that none exists. Cochise County’s page lists the county offices to call.

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