Bolthole Index

Mills County, Iowa

Zoning, building permits and septic rules in Henderson, Iowa

Henderson is a city in Mills County, Iowa. Septic permits inside Henderson come from Mills County (Mills County Environmental Health Office · 712-527-9699 Option 4). 3 rules below are quoted from official sources and independently re-checked, most recently on November 2, 2026. Rules for unincorporated land are on the Mills County page.

Answers from the rulebook for Henderson

Rules another office applies inside Henderson

Henderson 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 (with conditions)

    Private sewage disposal systems (septic) for land inside Henderson city, Iowa (Mills County). The statewide rule makes the local county board of health the administrative authority, or the Iowa DNR where it acts. Henderson city is in the county board's area; a Henderson-specific service-area statement was not confirmed on an official page.

    • The statewide rule names the county board of health as the administrative authority, as authorized by Iowa Code section 455b.172 and chapter 137.
    • The Mills County Board of Health's Henderson-specific service area was not confirmed on an official page; unofficial directory listings name Mills County Environmental Health, Glenwood.
    • Chapter 567-69 carries a rescission-date note (9/10/30, affected by delay); cite-check the current text before reliance.
    ““administrative authority” means the department or the local county board of health as authorized by iowa code section 455b.172 and chapter 137.”
  • Septic permitRequired

    Installing or altering a private sewage disposal system (septic) on land inside Henderson city, Iowa, under the statewide chapter 567-69. The construction permit is issued by the administrative authority (county board of health or Iowa DNR).

    • Construction may proceed only after the permit is issued (permit is required prior to construction).
    • The rule applies to installation or alteration as described in 69.1(3) "b"; repairs that do not change treatment or disposal are not alterations.
    • Henderson-specific permit fees and forms were not found on an official page.
    “no psds shall be installed or altered as described in 69.1(3) “b” unless a construction permit issued by the administrative authority is obtained prior to construction.”
  • Septic inspectionRequired

    Newly constructed private sewage disposal systems on land inside Henderson city, Iowa, under the statewide chapter 567-69.

    • The administrative authority must inspect the system at its location before it is backfilled.
    • A final as-built drawing is filed with the construction permit.
    “the administrative authority shall conduct an at-location inspection of all newly constructed psdss before the system is backfilled. a final as-built drawing shall be made as part of the final inspection and kept on file with the construction permit.”

Still unanswered

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

  • Building permit — Building permits for construction inside Henderson city, Iowa
  • Owner-builder exemption — Owner-builder exemption from permits inside Henderson city, Iowa
  • Building code adopted — Building code adoption for Henderson city, Iowa
  • Inspections — Building inspections for construction inside Henderson city, Iowa
  • Certificate of occupancy — Certificate of occupancy for buildings inside Henderson city, Iowa
22 more unanswered
  • Local zoning
  • Zoning districts
  • Minimum dwelling size
  • Minimum lot size
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Building in a floodplain
  • Short-term rentals
  • Permit fees
  • Permit process

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

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