Bolthole Index

Grant County, Wisconsin

Building permits, zoning and land rules in Cuba City, Wisconsin

Cuba City, Wisconsin requires a building permit for new homes and regulates construction through its own zoning code inside city limits.12 Start with Cuba City Hall for building and zoning applications; public sewer and water must be provided before a city building permit can be issued.34 For an existing private septic system on the Grant County side of Cuba City, Grant County handles local sanitary permitting and maintenance, while Wisconsin DSPS regulates onsite systems.56

At a glance

Building permits
Required for new homes; start with City Hall’s building/zoning application13
Zoning
City zoning code applies inside Cuba City’s corporate limits2
Water and sewer
Public sewer and water required before a city building permit is issued4
Septic authority
Grant County sanitary permitting for Grant County addresses; DSPS regulates onsite systems56
Minimum home size
R-1 and R-2 one-family dwellings: minimum living area of 1,000 square feet78
Owner-builder
An owner who occupies or will occupy the home may apply under the UDC owner-occupant allowance; building permits remain required91

Who to call

Building permits

Cuba City Hall

Starting point for city building/zoning applications, permit fee information and inspector contact information.

(608) 744-2152

108 North Main Street

Zoning

Cuba City Building Inspector

Enforcement of Cuba City’s zoning code inside city limits.

Septic permits

Grant County Conservation, Sanitation & Zoning Department

Local sanitary permit applications, soil evaluation reports and POWTS maintenance for Grant County addresses.

(608) 723-6080

150 W Alona Lane

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

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

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Do you need a building permit in Cuba City, WI?

Yes: a new one- or two-family dwelling in Cuba City needs a Wisconsin Uniform Dwelling Code building permit, including a stick-built, modular or manufactured-home installation.1 Cuba City’s zoning code also requires a building permit for the listed construction and structural alterations, with an exception for minor structures.2 Ask City Hall to classify your exact project rather than treating a small shed or remodeling job as automatically exempt.3

Cuba City’s public-utility requirement belongs near the start of a purchase decision: no city building permit may be issued unless public sewer and water are provided.4 An owner-occupant can apply using the UDC owner-builder allowance, but that allowance does not remove the new-home building permit requirement.91

Who handles Cuba City building and zoning applications?

Cuba City Hall publishes the building/zoning permit application, a permit fee schedule and inspector contact information on its official applications page.3 Call City Hall at (608) 744-2152 or start with the linked application page to request the current building permit forms, fees and inspection contact.3 The Cuba City Building Inspector enforces the city zoning code; the code covers land and water inside the city’s corporate limits.2

Keep sanitary approvals separate from building and zoning applications: Grant County’s Conservation, Sanitation & Zoning Department administers local private-wastewater permitting for Grant County addresses.5 For land outside Cuba City, use the Grant County guide to understand the county’s zoning jurisdiction rather than applying the city code beyond city limits.102

Does Cuba City have zoning, lot-size and setback rules?

Cuba City has its own zoning code, applying within the city’s corporate limits and enforced by the Building Inspector.2 Before choosing a house design, ask City Hall to identify the parcel’s zoning district and provide the applicable lot-area, yard, setback and lot-coverage requirements.3

The verified home-size rules are district-specific: a one-family dwelling in Cuba City’s R-1 district must have at least 1,000 square feet of living area.7 The same minimum living area applies to a one-family dwelling in Cuba City’s R-2 district.8 Cuba City’s Plan Commission may also find land unsuitable for development because of flooding, concentrated runoff, drainage, soil, rock or topographic hazards, so a zoning district alone does not settle whether the site can support your proposal.11

How do septic permits work inside Cuba City?

For a proposed home in Cuba City, start with the city’s public sewer and water requirement rather than assuming a private septic system can substitute for utility connections.4 Where a private system is involved at a Grant County address, Grant County administers sanitary permits, while Wisconsin DSPS regulates small underground domestic-wastewater systems; DNR review may also be needed when discharge could reach surface water.56

Grant County requires applicable state and county approvals before a private system is installed, and the sanitary application includes system plans, a soil evaluation and a licensed master plumber’s signature.12 Grant County also requires inspection of covered installations and modifications before the system enters service, subject to the stated exemptions.13 Existing systems covered by the county maintenance program need inspection or pumping every 3 years.14

Can you live in an RV or tiny home in Cuba City?

We could not confirm permission for residential RV occupancy in Cuba City; ask the city Building Inspector about the exact parcel, proposed duration and whether occupancy during construction can be approved.2 We also could not confirm a separate Cuba City tiny-home or accessory-dwelling occupancy rule; ask the Building Inspector before buying a unit or converting a garage.2

For a small permanent one-family dwelling, the confirmed barrier in Cuba City’s R-1 and R-2 districts is the minimum living area of 1,000 square feet.78 A new dwelling also needs UDC approval, and the city building permit depends on public sewer and water being provided.14

What are the steps to build a home in Cuba City?

  1. Start with Cuba City Hall’s building/zoning application and ask for the parcel’s district requirements, current building permit fees and inspector contact.3
  2. Confirm that public sewer and water can be provided before committing to a home design, because Cuba City makes those utilities a condition of issuing a building permit.4
  3. Resolve site hazards with the city: the Plan Commission can determine that flooding, drainage, soils or topography make land unsuitable for the proposed use.11
  4. Submit the home plans and obtain the required building permit before construction begins; start only after approval and permit issuance and posting.15
  5. Arrange footing, foundation, rough, insulation and final inspections with the inspector identified on the UDC permit.16
  6. Confirm the move-in requirements with the inspector: Wisconsin’s UDC guidance ties occupancy to a final inspection without major health or safety violations, while a separate Cuba City occupancy document remains unconfirmed.17

Watch-outs

  • Cuba City requires public sewer and water before a city building permit is issued; resolve utility service before treating a parcel as suitable for an off-grid home.4
  • Cuba City’s Plan Commission can find a site unsuitable because of flooding, runoff, drainage or soil hazards even when the proposed use fits the zoning district.11
  • Ask Cuba City Hall for the current building permit fee schedule and inspector contact before budgeting construction.3

Sources

  1. UDC (Uniform Dwelling Code / One- and Two-Family Dwellings) (Cuba City), quoted and re-checked
  2. Cuba City Building Inspector (library.municode.com)
  3. Cuba City Hall (cubacity.org)
  4. library.municode.com (Cuba City), quoted and re-checked
  5. Conservation, Sanitation, and Zoning – Grant County, quoted and re-checked
  6. Private Onsite Wastewater Treatment Systems (Cuba City), quoted and re-checked
  7. 17.25 - R-1 Single-Family Residential District (Cuba City), quoted and re-checked
  8. 17.26 - R-2 Single-Family Residential District (Cuba City), quoted and re-checked
  9. Instructions for Submitting a UDC Permit Application (Cuba City), quoted and re-checked
  10. Conservation, Sanitation, and Zoning – Grant County, quoted and re-checked
  11. 17.11 - Site Regulations (Cuba City), quoted and re-checked
  12. Sanitary Permit Application Process, quoted and re-checked
  13. Grant County Code Chapter 225, Article V: Inspections, quoted and re-checked
  14. Three Year Maintenance Requirement, quoted and re-checked
  15. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked
  16. UDC inspections (Cuba City), quoted and re-checked
  17. Wisconsin’s Uniform Dwelling Code (Wisconsin statewide rule), quoted and re-checked

Written October 11, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for Cuba City

Cuba City’s own rules

  • InspectionsRequired

    New one- and two-family dwellings inside Cuba City.

    • Required stages are footings, foundation and reinforcement, rough, insulation and final.
    “The following inspections are required on new one- and two-family dwellings. When ready for inspection, notify the inspector identified on your UDC permit.”
  • Mandatory utility hookupWater and sewer (with conditions)

    Lots and buildings inside Cuba City city limits subject to a city building permit.

    • The city zoning code states that no building permit may be issued unless public sewer and water are provided.
    “(5) SEWER AND WATER. No building permit shall be issued unless public sewer and water are provided.”
  • Building in a floodplainLimited

    Development on land inside Cuba City that the City Plan Commission determines unsuitable because of flooding or related site hazards.

    • The City Plan Commission must recite the particular facts in writing and the applicant may present evidence contesting the determination.
    “No land shall be used or structure erected where the land is held unsuitable for such use or structure by the City Plan Commission by reason of flooding, concentrated runoff, inadequate drainage, adverse soil or rock formation, unfavorable topography, bearing strength, erosion susceptibility or any other feature likely to be harmful to the health, safety, prosperity, aesthetics and general welfare of this community.”

Rules another office applies inside Cuba City

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

  • Owner-builder exemptionAvailable (with conditions)

    An owner-occupant applying for a Wisconsin UDC erosion-control or construction permit for a dwelling inside Cuba City.

    • The applicant must be or become an owner-occupant; contractor and qualifier fields are left blank and the owner-occupant attestation is required.
    “You will leave those areas blank. At Step 5, you will check the box above your electronic signature which states “I vouch that I am or will be an owner-occupant of this dwelling for which I am applying for an erosion control or construction permit without a Dwelling Contractor Certification and have read the cautionary statement regarding contractor responsibility on the reverse side of the last ply of this form.””
  • Building code adoptedAdopted (with conditions)

    New one- and two-family dwellings inside Cuba City city limits through Wisconsin's Uniform Dwelling Code.

    • Municipal or other delegated enforcement applies as identified by DSPS.
    “A permit under the UDC is required for new one- and two-family dwelling units. This includes stick-built, modular, and manufactured home installations.”
  • Minimum dwelling sizeSpecified

    One-family dwellings in Cuba City's R-1 Single-Family Residential District.

    • Minimum living area is 1,000 square feet.

    living area: >= 1000 square feet

    “Living Area . Minimum 1,000 square feet.”
    One more reviewed finding on this topic
  • Who permits septicState (with conditions)

    Small onsite domestic-wastewater systems used inside Cuba City where municipal sewer is not used.

    • DNR review may also be required if discharge may reach surface water; large or mixed systems may require joint DNR/DSPS review.
    “Small wastewater systems for the underground disposal of domestic wastewater are regulated by the Department of Safety and Professional Services (DSPS), unless that wastewater is discharged in a way that may reach surface water, in which case the design will likely also require review and approval by the DNR.”
  • Septic permitRequired

    Onsite wastewater systems inside Cuba City where a sanitary permit is required for the proposed system.

    • Approval authority and review can vary by system size, wastewater type and discharge route; DNR review may be required.
    “The plans, specifications and engineering report should include the following items: [...] Sanitary permit application made to DSPS or their delegee.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Cuba City or Grant County directly.

  • Certificate of occupancy — Buildings inside Cuba City city limits.
  • Lot coverage — Land inside Cuba City city limits.
  • Tiny homes — Tiny-home occupancy on land inside Cuba City city limits.
  • Accessory dwellings — Accessory dwelling units inside Cuba City city limits.
  • Septic inspection — Onsite wastewater systems inside Cuba City.
5 more unanswered
  • Well permit
  • Agricultural exemption
  • Subdividing land
  • 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 Cuba City publishes no rule on the point, not that none exists. Grant County’s page lists the county offices to call.

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