Bolthole Index

Union County, Arkansas

Zoning, building permits and septic rules in El Dorado, Arkansas

El Dorado is a city in Union County, Arkansas. El Dorado adopts its own zoning, so inside its limits El Dorado’s rules apply, not the county’s. Septic permits inside El Dorado come from the state health agency. 11 rules below are quoted from official sources and independently re-checked, most recently on November 7, 2026. Rules for unincorporated land are on the Union County page.

Answers from the rulebook for El Dorado

El Dorado’s own rules

  • Building permitRequired

    Most construction and renovation work inside El Dorado city limits.

    • Listed permit work includes demolition, new and remodel construction, renovation other than paint and flooring, HVAC, electrical, plumbing, signs, awnings, and fences.
    • Permits require a documented total-project cost estimate.
    • Additional information may include a survey, approved Arkansas Department of Health plumbing plans, and certified architect plans.
    “Whether you are looking to build a new facility or renovate an existing structure inside El Dorado city limits, a permit will be required for most work.”
  • Building code adoptedAdopted (with conditions)

    Building projects and renovations inside El Dorado city limits.

    • Projects and renovations must comply with the Arkansas Fire Prevention Code.
    “The City has adopted the Arkansas Fire Prevention Code. Building projects and renovations must comply with this statewide code, even in rural and unincorporated areas.”
  • Local zoningPresent (with conditions)

    Land inside El Dorado city limits.

    • The official city site identifies a Planning & Zoning Commission; district-specific ordinance text was not available in the opened official materials.
    “The Planning & Zoning Commission meets on the 3rd Tuesday of the month at Noon at City Hall.”

Rules another office applies inside El Dorado

El Dorado 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 septicState (with conditions)

    Onsite wastewater systems inside El Dorado city limits.

    • The Department may use an Authorized Agent; where a city or county has no Authorized Agent, applications are made to the Department.
    “For those cities or counties with Authorized Agents, the Authorized Agent shall be the Authorized Agent of the Department. In the event that an Authorized Agent has not been designated for a city or county, applications for onsite wastewater systems shall be made to the Department.”
  • Septic permitRequired

    Construction, alteration, repair, or extension of onsite wastewater systems inside El Dorado city limits.

    • A valid Permit for Construction from the Department or its Authorized Agent is required before work begins.
    • Emergency repairs may proceed without prior notice if a permit is obtained within ten working days.
    “Permits for construction and operation of onsite wastewater systems shall be obtained in accordance with the RULES PERTAINING TO ONSITE WASTEWATER SYSTEMS prior to the construction, installation or modification of the Onsite Wastewater System.”
  • Septic inspectionRequired

    Operation of onsite wastewater systems inside El Dorado city limits.

    • The system may not be operated until inspected and approved by the Department or its Authorized Agent and a Permit for Operation is obtained.
    “It shall be unlawful for any person, firm, corporation, association, municipality or governmental agency to begin operation of any onsite wastewater system until such system has been inspected and approved by the Department or its Authorized Agent and the owner has first obtained a Permit for Operation issued by the Department or its Authorized Agent.”
  • Off-grid sanitationProhibited

    Premises inside El Dorado city limits meeting the state rule's available-sanitary-sewer condition.

    • The prohibition applies where sanitary sewer is available within 300 feet from the point where the sewer exits the building and connection can be made without crossing another person's property.
    “No privies, onsite wastewater systems or other receptacles for human excreta shall be constructed, maintained, or used on the premises.”
  • Mandatory utility hookupSewer (with conditions)

    Premises inside El Dorado city limits where a sanitary sewer is available within the stated distance and can be connected without crossing another person's property.

    • Connection applies when the sewer is within 300 feet from the point where it exits the building on the property owner's property.
    • Connection must be possible without crossing another person's property.

    sanitary sewer distance: <= 300 feet (Measured from the point where the sewer exits the building on the property owner's property; sewer must be available and connection must not cross another person's property.)

    “All premises shall be connected to a sanitary sewer when within 300 feet from the point where the sewer exits a building on the property owner’s property and available to said premises when connection can be made without crossing another person's property.”
  • Subdividing landRegulated (with conditions)

    Proposed subdivisions inside El Dorado city limits that will use onsite wastewater systems for all or part of their lots or tracts.

    • The condition applies only to subdivisions proposing onsite wastewater treatment.
    • Submission is made to the local health unit and requires the specified soil, percolation, topography, and other review information.
    “All subdivision plans, which are proposed to utilize standard onsite wastewater systems as a method of wastewater treatment for all or part of the lots or tracts in said subdivision, shall be submitted to the Arkansas Department of Health for review and approval of the overall plan for the utilization of onsite wastewater systems.”
  • Permit feesPublished (with conditions)

    Individual onsite-wastewater permit applications inside El Dorado city limits.

    • Fees are plan-review fees payable to the Arkansas Department of Health before issuance of Part 1 of the Permit Application.
    • There is no refund for failure to proceed under the Permit Application.

    onsite wastewater plan-review fee: 30-150 USD (Varies by residential structure size; alteration, repair, or extension fee is $30.)

    “A fee shall be levied for the review of each permit. Permit fees shall be made payable to the Department. The review fee shall be paid before the issuance of Part 1 of the Permit Application.”
  • Permit processPublished (with conditions)

    Onsite wastewater construction and operation inside El Dorado city limits.

    • Part I must be completed by a Designated Representative and approved before construction.
    • Part II is the installation inspection.
    • The system cannot be used before inspection approval and issuance of a Permit for Operation.
    “Part I of the Permit is the Permit for Construction. Part I of the Permit Application form shall be completed by a Designated Representative and approved by the Department or its Authorized Agent prior to initiating construction.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask El Dorado or Union County directly.

  • Owner-builder exemption — Owner-built residential construction inside El Dorado city limits.
  • Minimum dwelling size — Residential zoning districts inside El Dorado city limits.
  • Minimum lot size — Residential zoning districts inside El Dorado city limits.
  • Setbacks — Residential zoning districts inside El Dorado city limits.
  • Lot coverage — Residential zoning districts inside El Dorado city limits.
12 more unanswered
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Well permit
  • Agricultural exemption
  • Shed and accessory-building permit exemption
  • 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 El Dorado publishes no rule on the point, not that none exists. Union County’s page lists the county offices to call.

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