Zoning, building permits and septic rules in Ottumwa, Iowa

Ottumwa’s own rules

• InspectionsLimited

  Housing-code inspections of existing dwellings inside Ottumwa city (not construction inspections)

  • Owner-occupied single-family dwellings inspected only on request or complaint
  • Rental units inspected every three years, annually if more than 15 major deficiencies or three valid complaints in 12 months

  “inspections of owner-occupied single-family dwellings, condominiums and cooperatives shall occur only upon request or complaint to the inspector and/or director.”

• Local zoningPresent

  Land inside Ottumwa city limits

  “Base zoning district means a district established by this chapter that prescribes basic regulations governing land use and site development standards.”

• Zoning districtsPublished

  Zoning districts in Ottumwa city (R-1, R-2, AG, RR and others)

  • Chapter 38 also has R-2, RMHP, CBD, C-1 to C-4, I-1, I-2 and overlay districts.

  “The AG district promotes and preserves agricultural uses, including crop and animal production.”

• Minimum dwelling sizeSpecified

  Single-family detached dwellings inside Ottumwa city

  • Foundation skirting must look like masonry or poured concrete
  • No minimum floor area found; ADUs minimum 400 sq ft

  minimum length and width: >= 20 feet

  “(1) the dwelling shall have a minimum length and width of at least 20 feet.”

• Minimum lot sizeSpecified

  One-family detached in AG district, Ottumwa city

  • Other permitted uses 5 acres
  • Minimum lot width 150 feet

  minimum lot area: >= 10 acres

  “minimum lot area 10 acres 5 acres minimum lot width 150 feet”

  2 more reviewed findings on this topic

  • Specified — One-family detached in R-1 district, Ottumwa city

    “minimum lot area (square feet) 6,000 none 15,000 minimum lot width (feet) 50 none 100”

  • Specified — One-family detached in RR rural residential district, Ottumwa city

    “minimum lot area 1 acre 2 acres minimum lot width 150 feet 150 feet”

• SetbacksSpecified

  One-family detached in AG district, Ottumwa city

  • Street side yard and rear yard 50 ft
  • Unplatted lots along roads: typically 75 ft from road centerline

  front yard: >= 50 feet · side yard: >= 25 feet

  “front yard 1 50 feet 50 feet side yard 25 feet 25 feet street side yard, corner lot 50 feet 50 feet rear yard 50 feet 50 feet”

  One more reviewed finding on this topic

  • Specified — One-family detached in R-1 district, Ottumwa city

    “front yard 20 none 30 side yard 4 none 10 street side yard, corner lot 2 15 none rear yard 25 none”

• Lot coverageSpecified

  Detached accessory buildings on residential lots inside Ottumwa city

  • Aggregate detached structures for single-family/duplex capped at 1,200 sq ft unless conditional use permit
  • Accessory buildings in rear yard max 18 ft high
  • Main-building lot coverage limits not found

  rear yard occupied by accessory buildings: <= 35 percent (except accessory dwelling units)

  “except for accessory dwelling units, no detached, accessory structure, accessory building, or buildings shall occupy more than 35 percent of the rear yard area.”

• Building heightSpecified

  One-family detached in R-1 district, Ottumwa city

  • Churches, schools, hospitals up to 60 ft

  maximum height: <= 35 feet

  “Rear yard 25 None Maximum height (feet) 3 35 None 60”

  One more reviewed finding on this topic

  • Specified — AG district, Ottumwa city

    “rear yard 50 feet 50 feet maximum height 35 feet 35 feet”

• Camping on your landLimited

  Camping inside Ottumwa city

  • Camping on public property or public right-of-way is a simple misdemeanor unless authorized (Ottumwa Park campground, city rules, temporary special-event permit or mayoral emergency declaration)
  • Overnight camping on private residential property by friends or family of the owner is not prohibited if the owner consents and temporary housing is limited pursuant to chapter 20

  “it is unlawful for any person to camp in or upon any public property or public right-of-way, or public parks shelter or transit shelter unless otherwise specifically authorized in the ottumwa park campground, by this code or by city regulations or city rules or by temporary permit to allow camping on public or private property in connection with a special event or by declaration by the mayor in emergency circumstances.”

• Manufactured homesLimited

  Mobile homes inside Ottumwa city

  • Mobile homes must be in a mobile home park in the RMHP district
  • Must display a HUD seal and be built on or after June 15, 1976
  • Mobile home park minimum five acres, maximum eight units per acre, lots at least 4,000 sq ft (reducible with common space)

  “following the effective date of the ordinance from which this section derives, no mobile home shall be located outside of a mobile home park.”

• Accessory dwellingsAllowed (with conditions)

  Accessory dwelling units on single-family lots inside Ottumwa city

  • Staff administrative review
  • Lot at least the minimum size for single-family home in the district
  • One ADU per property, attached or detached
  • Owner must reside on the property
  • No condominium division
  • One extra off-street parking space

  ADU size: 400-1200 sq ft

  “accessory dwelling units (adus) are permitted in single-family homes where the property is in compliance with the permitted use and bulk regulation requirements of this chapter, subject to the following additional requirements.”

Still unanswered

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

• Building permit — Building permits inside Ottumwa city
• Owner-builder exemption — Owner-builder exemption inside Ottumwa city
• Building code adopted — Building code inside Ottumwa city
• Certificate of occupancy — Certificate of occupancy inside Ottumwa city
• Living in an RV — Long-term RV occupancy on private land inside Ottumwa city

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.