Bolthole Index

Polk County, Iowa

Zoning, building permits and septic rules in Des Moines, Iowa

Des Moines is a city in Polk County, Iowa. Des Moines adopts its own zoning, so inside its limits Des Moines’s rules apply, not the county’s. 4 rules below are quoted from official sources and independently re-checked, most recently on October 16, 2026. Rules for unincorporated land are on the Polk County page.

Answers from the rulebook for Des Moines

Des Moines’s own rules

  • Local zoningPresent

    Land inside Des Moines city limits; city zoning ordinance is Municipal Code Chapter 134

    • Chapter 135 (Planning and Design) also applies per the city checklist.
    “shows location of the building and site elements to be constructed. see municipal code chapter 134 & 135 for detailed requirements.”
  • Short-term rentalsLimited

    Short-term commercial rentals (under 30 consecutive days) inside Des Moines city

    • Subject to supplemental regulations in section 134-3.5.12.c and additional conditions the Board of Adjustment may require.
    • Board of Adjustment review against general standards.
    • Current adopted text should be checked; opened source is a 2019 amending ordinance.

    rental term defining short-term: < 30 consecutive days

    “all short-term rentals are subject to the following siiddlemental regulations, tosether with such additional special coadifions as may be reasonably required by the board of adjustment:”
  • Permit feesPublished

    Building permits inside Des Moines city, Permit and Development Center

    • Fee schedule is labeled 'new fees 2-1-25'.
    • Single-family fee depends on finished floor area (basement and garage excluded).
    • Separate electrical, mechanical and plumbing fees apply.

    accessory housing unit building permit: 550 USD · new single-family 1,200 sq ft or less: 1050 USD · new single-family 1,201-2,000 sq ft: 1350 USD · new single-family over 2,000 sq ft: 1750 USD

    “new construction of accessory housing unit on residential lot $550.00”
  • Permit processPublished

    Building permit applications inside Des Moines city

    • Site plans are submitted through the city's online self-service portal.
    “submit site plans to css portal at https://css.dmgov.org/energov_prod/selfservice#/home”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Des Moines or Polk County directly.

  • Owner-builder exemption — Owner-builder exemption inside Des Moines city
  • Inspections — Inspections inside Des Moines city
  • Certificate of occupancy — Certificate of occupancy inside Des Moines city
  • Minimum dwelling size — Minimum dwelling size inside Des Moines city
  • Minimum lot size — Minimum lot size inside Des Moines city
17 more unanswered
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Building in a floodplain

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

Off-grid gear

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

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