Bolthole Index

St. Croix County, Wisconsin

Zoning, building permits and septic rules in Hudson, Wisconsin

Hudson is a city in St. Croix County, Wisconsin. Hudson adopts its own zoning, so inside its limits Hudson’s rules apply, not the county’s. 3 rules below are quoted from official sources and independently re-checked, most recently on November 11, 2026. Rules for unincorporated land are on the St. Croix County page.

Answers from the rulebook for Hudson

Hudson’s own rules

  • Local zoningPresent

    Land inside Hudson city (St. Croix County), WI

    • The city site lists Chapter 255 as under staff review; only the downtown overlay (§255-17.1 to 17.7) was rewritten in 2024.
    “chapter 255 zoning [history: adopted by the common council of the city of hudson by ord. no. 1-81 as ch. 17 of the 1981 code; amended in its entirety 10-18-1993 by ord. no. 23-93.”
  • Zoning districtsPublished

    Zoning districts inside Hudson city

    • Table of permitted uses and table of dimensional requirements are attachments to Chapter 255; their contents were not read.
    “article iii zoning districts, permitted uses and dimensional standards § 255-13 district boundaries. § 255-14 districts established.”
  • Subdividing landRegulated (with conditions)

    Land division inside Hudson city

    • Only the chapter title was read; specific requirements not reviewed.
    “chapter 254 subdivision of land [history: adopted by the common council of the city of hudson by ord. no. 1-81 as ch. 18 of the 1981 code. amendments noted where applicable.]”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Hudson or St. Croix County directly.

  • Building permit — Building permits inside Hudson city
  • Owner-builder exemption — Owner-builder inside Hudson city
  • Building code adopted — Building code inside Hudson city
  • Inspections — Building inspection inside Hudson city
  • Certificate of occupancy — Certificate of occupancy inside Hudson city
22 more unanswered
  • 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
  • Who permits septic
  • 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
  • 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 Hudson publishes no rule on the point, not that none exists. St. Croix County’s page lists the county offices to call.

Off-grid gear

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

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