Bolthole Index

Rock County, Wisconsin

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

Town of Porter is a town in Rock County, Wisconsin. Town of Porter adopts its own zoning, so inside its limits Town of Porter’s rules apply, not the county’s. 5 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Rock County page.

Answers from the rulebook for Town of Porter

Town of Porter’s own rules

  • Building permitRequired

    Specified buildings, including residences and other principal buildings, proposed for location or construction inside Porter town limits.

    • Also applies to residential or other principal-building additions or alterations and specified earth-disturbing activity.
    • The Town delegated administration of this zoning building-site permit procedure to the Rock County Planning, Economic & Community Development Agency.
    “a zoning (building site) permit shall be required if a specified building, to include residences and other principal buildings, is proposed for location or construction on a lot, for any residential or other principal building addition or alteration, or for any earth disturbing activity”
  • Local zoningPresent (with conditions)

    Land inside the Town of Porter, Rock County, Wisconsin.

    • The ordinance page identifies the zoning ordinance as adopted July 20, 2015 and amended February 18, 2019.
    “zoning ordinance - adopted july 20 2015 - amended february 18 2019”
  • Living in an RVLimited

    Habitation of recreational vehicles on lots or outlots inside Porter town limits.

    • Outside the NR-OS district, habitation is only for guests of Town residents or landowners where a residence on the premises has adequate water supply and sewer service facilities.
    • The guest use may not exceed 30 days per calendar year and no fee may be imposed.

    maximum guest RV habitation: <= 30 days per calendar year (Only outside NR-OS and only under the stated guest, water, and sewer conditions.)

    “habitation of a recreational vehicle or tent shall not take place on any lot/outlot not designated in the nr-os zoning district unless by guests of town residents or landowners, where an adequate water supply and sewer service facilities to serve the guests are available in a residence located on the premises. if such use takes place, it shall not exceed thirty (30) days per calendar year and no fee shall be imposed for such use;”
  • Camping on your landLimited

    Tent habitation on lots or outlots inside Porter town limits.

    • Outside the NR-OS district, habitation is only for guests of Town residents or landowners where a residence on the premises has adequate water supply and sewer service facilities.
    • The guest use may not exceed 30 days per calendar year and no fee may be imposed.

    maximum guest tent habitation: <= 30 days per calendar year (Only outside NR-OS and only under the stated guest, water, and sewer conditions.)

    “habitation of a recreational vehicle or tent shall not take place on any lot/outlot not designated in the nr-os zoning district unless by guests of town residents or landowners, where an adequate water supply and sewer service facilities to serve the guests are available in a residence located on the premises.”
  • Manufactured homesLimited

    Mobile or manufactured-home residential use inside Porter town limits.

    • Residential use is conditioned on location on a mobile-home lot in a licensed mobile-home park.
    • The home must meet HUD Manufactured Home Construction Standards, be on a designated stand, and connect to common water, sanitary sewer, and electrical service.
    “a mobile home shall be used for residential purposes only if it is located on a mobile home lot in a licensed mobile home park, subject to all of the following:”

Still unanswered

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

  • Owner-builder exemption — Owner-builders constructing inside Porter town limits.
  • Building code adopted — Building-code adoption for construction inside Porter town limits.
  • Inspections — Building inspections for construction inside Porter town limits.
  • Certificate of occupancy — Certificates of occupancy for land inside Porter town limits.
  • Tiny homes — Tiny-home occupancy inside Porter town limits.
12 more unanswered
  • 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
  • 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 Town of Porter publishes no rule on the point, not that none exists. Rock County’s page lists the county offices to call.

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