St. Croix County, Wisconsin
Town of Cady is a town in St. Croix County, Wisconsin. Town of Cady adopts its own zoning, so inside its limits Town of Cady’s rules apply, not the county’s. Septic permits inside Town of Cady come from St. Croix County (St. Croix County Community Development Department · 715-386-4680). 15 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the St. Croix County page.
New or altered one- and two-family dwellings, pools, qualifying accessory structures, structures requiring electrical, plumbing, structural footings or supports, and commercial or industrial buildings inside Cady town.
accessory-structure threshold: > 200 sq ft (A permit is required for an accessory structure over this threshold.)
“No person shall build or cause to be built any new one or two family dwelling [...] without first obtaining a state uniform building permit or a town building permit”
Construction, reconstruction, and alteration of dwellings and commercial buildings inside Cady town.
“The Uniform Dwelling Code, Wisconsin Administrative Code Chapters SPS320 to 325, and all amendments thereto are adopted and incorporated in this chapter by reference”
Construction subject to the Uniform Dwelling Code or Town Building Code inside Cady town.
inspection notice: 48 hours (For inspections required by UDC Chapter SPS 320.10.)
“The builder shall give the Building Inspector for all inspections required by UDC Chapter SPS 320.10, 48 hours notice as per UDC.”
Land inside Cady town; Cady adopted the St. Croix County Zoning Ordinance as the applicable zoning rule.
“The town is under St Croix County zoning- please contact St Croix County for zoning questions.”
Agricultural buildings inside Cady town.
agricultural assessment: >= 50 percent (Contiguous parcel; cited as Wis. Stat. §70.32(2)(A).)
“Agricultural buildings on a contiguous parcel that is assessed at least 50% agricultural under Wis. Stat. §70.32(2)(A)”
Any new driveway inside Cady town; Town Board or its designated agent issues permits for town and private roads.
“Driveway permits: Any type of new driveway needs a driveway permit. There is a fee for the permit.”
Town building permits inside Cady town.
“The building permit fees will be set by the Building Inspector and may be changed from time to time”
Town building-permit applications inside Cady town.
permit validity: 24 months · decision time: <= 10 business days (After receipt of all required forms, fees, plans, and documents.)
“Action to approve or deny a building permit application shall be completed within 10 business days of receipt of all of the forms, fees, plans and documents required for processing the application.”
Town of Cady does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
New lots or parcels created inside Cady town under the St. Croix County Land Division Ordinance.
general minimum lot size: 1.5 acres (Unless larger lots are required by other County ordinances or Town requirements.)
“As a general rule, the Minimum lot size is 1.5 acres, unless larger lots are required by other County ordinances or Town requirements.”
Structures inside Cady town subject to St. Croix County general zoning or overlay zoning.
“Setback requirements vary depending on the zoning district and the type of structure being constructed.”
Private onsite wastewater systems inside Cady town, which is within St. Croix County.
“The St. Croix County Community Development Department ensures public health and environmental protection by managing septic systems. We issue permits for new septic system installations”
Installation, repair, reconnection, rejuvenation, and specified non-plumbing sanitation work inside Cady town.
“A State Sanitary Permit is required for the installation of a private on-site wastewater treatment system (POWTS). A County Sanitary Permit is required for the repair, reconnection, or rejuvenation of a POWTS”
Work requiring a sanitary permit and existing private onsite wastewater systems inside Cady town.
maintenance inspection interval: per 3 years (Unless otherwise specified in a management plan.)
“Staff will conduct at least one inspection for all work requiring a sanitary permit.”
Non-plumbing sanitation and dwellings not served by public sewer inside Cady town.
“A County Sanitary Permit shall be obtained prior to constructing or installing a non-plumbing sanitation system.”
Subdivision and land division inside Cady town.
minor-subdivision parcel count: 1-4 parcels within five years · major-subdivision parcel count: >= 5 parcels within five years
“Creating 1-4 parcels within five years is a minor subdivision. (See the process below)”
We looked and could not find an official answer yet. Silence is not permission; ask Town of Cady or St. Croix County directly.
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 Cady 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 Town of Cady means bringing your own water and power. The kit we’d start with:
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