Bolthole Index

Dunn County, Wisconsin

Zoning, building permits and septic rules in Town of Peru, Wisconsin

Town of Peru is a town in Dunn County, Wisconsin. Septic permits inside Town of Peru come from Dunn County (Dunn County Planning & Land Use — Sanitation · 715-231-6520). 10 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Dunn County page.

Answers from the rulebook for Town of Peru

Rules another office applies inside Town of Peru

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

  • Zoning districtsPublished

    Dunn County Chapter 13 zoning districts that apply inside Peru town (Peru town is listed among towns under county zoning and is not among the six towns excluded from Chapter 13). This is a county rule applying inside Peru town, not a Peru town ordinance.

    • Dunn County Chapter 13 does not apply in the towns of Eau Galle, Elk Mound, New Haven, Rock Creek, Sand Creek, and Springbrook, which are excluded by the county page.
    “Dunn County's Chapter 13 Comprehensive Zoning ordinance applies to all towns and unincorporated areas, except the towns of Eau Galle, Elk Mound, New Haven, Rock Creek, Sand Creek, and Springbrook.”
    One more reviewed finding on this topic
    • Published — Residential District (R1) under Dunn County Chapter 13, where it applies inside Peru town
      “13.2.3.01 Purpose: To identify those areas where predominately single family residential development has occurred or will likely occur.”
  • Minimum lot sizeDistrict specific (with conditions)

    Minimum lot size for land inside Peru town under the Dunn County Chapter 13 zoning district that applies

    • Lot size is set by the zoning district (R1, R2, R3, agricultural and other districts) that applies to the parcel.
    “Minimum lot size shall be that specified by the zoning district that applies.”
  • SetbacksDistrict specific (with conditions)

    Highway and front yard setbacks for land inside Peru town under Dunn County Chapter 13

    • Highway and front yard setbacks are regulated under section 13.3.2 of Chapter 13.
    • Side and rear setback numbers by district were not retrieved.
    “Highway/Front Yard: The minimum highway and front yard setbacks shall be regulated under Section 13.3.2.”
  • Living in an RVLimited

    Mobile recreational vehicles on land inside Peru town under Dunn County Chapter 13

    • A mobile recreational vehicle (400 sq ft or less, designed for recreation, camping, travel or seasonal use) may not be used as a permanent principal residence.
    • Temporary use of an RV was not addressed by the retrieved text.
    “A mobile recreational vehicle shall not be used as a permanent principal residence”
  • Manufactured homesLimited

    Single-family dwellings in the R1 district on land inside Peru town under Dunn County Chapter 13

    • Mobile homes constructed before June 15, 1976 are excluded from the single-family dwelling use.
    “Single family dwelling, excluding mobile homes constructed before June 15, 1976, as defined in Wis. Stats.§ 101.91 (10)”
  • Accessory dwellingsLimited

    Accessory structures on land inside Peru town under Dunn County Chapter 13 (R1 district language)

    • Accessory structures may not be used for human habitation unless properly permitted.
    • Accessory structures require a permitted principal structure first.
    “Permits must be issued for a permitted principal structure (13.2.3.03) before permits will be issued for accessory structures. Accessory structures shall not be designed or used in part or whole for human habitation or any unauthorized accessory use unless properly permitted.”
  • Who permits septicCounty (with conditions)

    Dunn County sanitary ordinance for private on-site wastewater systems on land inside Peru town

    • Dunn County's shoreland, floodplain, land division, and sanitary ordinances apply to all towns in dunn county.
    • Whether Peru town administers any part of the sanitary program was not established.
    “Dunn County's Shoreland, Floodplain, Land Division, and Sanitary ordinances apply to all Towns in Dunn County.”
  • Subdividing landRegulated (with conditions)

    Dunn County land division ordinance as it applies to land inside Peru town

    • Dunn County's shoreland, floodplain, land division, and sanitary ordinances apply to all towns in dunn county.
    • Land division review thresholds and procedure were not retrieved.
    “Dunn County's Shoreland, Floodplain, Land Division, and Sanitary ordinances apply to all Towns in Dunn County.”
  • Permit processPartial

    Dunn County zoning permits for uses listed as permitted uses in a zoning district, where Chapter 13 applies inside Peru town

    • Applies only to uses listed as permitted uses within a zoning district.
    • Building permits, UDC inspection and sanitary permits are not established by this statement.
    “Zoning Permits are required for uses that are listed as "Permitted Uses" within a zoning district.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Town of Peru or Dunn County directly.

  • Building permit — Building permit for a new dwelling on land inside Peru town
  • Owner-builder exemption — Owner-builder exemption for a home inside Peru town
  • Building code adopted — Building code that governs new dwellings inside Peru town
  • Inspections — Building inspections for new dwellings inside Peru town
  • Certificate of occupancy — Occupancy certificate for a new dwelling inside Peru town
16 more unanswered
  • Local zoning
  • Minimum dwelling size
  • Lot coverage
  • Building height
  • Camping on your land
  • Tiny homes
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals
  • Permit fees

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 Town of Peru publishes no rule on the point, not that none exists. Dunn County’s page lists the county offices to call.

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