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

Town of Seneca’s own rules

• Zoning districtsPublished (with conditions)

  Zoning districts inside Seneca town.

  • Official zoning map is retained at Town Hall by the Town Clerk and available for public inspection upon reasonable notice.

  “the town of seneca is divided into the following districts: (1) residenĕal district: r‐1 (2) agricultural district (small lot): ag‐2 (3) agricultural district (large lot): ag‐5 (4) commercial district: c‐1 (5) industrial district: i‐1 (6) special purpose: sp (7) conservancy district: con”

• Manufactured homesLimited

  Manufactured/mobile homes inside Seneca town where a single-family residence is permitted.

  • Manufactured homes are subject to the same rules as other single-family residences and require a full-length-and-width foundation with footing and anchoring.

  “Mobile homes are considered as single‐family dwellings or residences and are subject to the same regulaĕons as other single‐family residences. Mobile homes shall have a full length and width foundaĕon with fooĕng of block or poured concrete supporĕng the enĕre frame, and shall be securely anchored to the fooĕngs.”

• Who permits septicCounty (with conditions)

  Private onsite wastewater treatment systems serving land inside Seneca town.

  • System installation must conform to applicable state, county, and township rules.

  “A sanitary permit shall be issued by the POWTS Administrator only if a completed application has been made and the appropriate fee paid, and if the POWTS Administrator finds that such application and the proposed installation will be in conformity with this ordinance and other rules of the state, county or applicable township.”

• Septic permitRequired

  Installation of a private onsite wastewater treatment system inside Seneca town.

  • Completed application and applicable fee are required; installation must conform to county, state, and applicable township rules; temporary permits may be issued for extenuating circumstances.

  “A sanitary permit shall be issued by the POWTS Administrator only if a completed application has been made and the appropriate fee paid, and if the POWTS Administrator finds that such application and the proposed installation will be in conformity with this ordinance and other rules of the state, county or applicable township. or if extenuating circumstances exist, the POWTS Administrator may issue a temporary permit.”

• Septic inspectionRequired

  Installed or modified POWTS inside Seneca town.

  • Inspection occurs after construction and before backfilling; return inspection is required if initial inspection shows incomplete or noncompliant installation.

  “The installing plumber whose name appears on the sanitary permit shall allow the POWTS Administrator to make a field inspection of the POWTS installation, modification or reconnection after construction, but before backfilling, no later than the end of the next work day after which such work was completed on the system and the POWTS Administrator was notified, excluding Saturdays, Sundays and holidays,.”

• Well permitRequired

  Private-well location inside Seneca town.

  • Completion of the Wood County permit application is mandatory; DNR alone may grant variances from NR 812 minimum location distances.

  well location permit fee: 125 USD

  “NOTICE: This form is authorized by ss. 59.70(6) and 280.21, Wis Stats., and chs. NR 812 and 845, Wis. Adm. Code, and Wood County Ordinance #708. Completion of this form is mandatory.”

• Driveway accessRequired

  A new or altered driveway/access point from a Wood County Trunk Highway inside Seneca town.

  • Applies to county-trunk-highway access, including revision or addition to an existing driveway/access point.

  “Any time a new access point is needed off of a County Trunk Highway, you will need to obtain a "Highway Access Control Permit". You must also obtain the permit if a revision or addition is made to any existing driveway/access point.”

• Building in a floodplainRequired

  Development work within a shoreland or floodplain zone inside Seneca town.

  • Approval is required before the listed work starts, including soil disturbance, new construction, and driveway or landscaping work.

  “approval by the wood county planning and zoning office is required prior to starting work within a shoreland or floodplain zone for the following projects:”

• Permit feesVariable (with conditions)

  Wood County POWTS permits serving land inside Seneca town.

  • Fees are set and amended as needed by the Wood County Board of Supervisors; a current fee schedule is maintained as an ordinance addendum.

  “Permit fees shall be set and amended as needed by the Wood County Board of Supervisors. A current fee schedule shall be kept as an addendum to this ordinance.”

• Permit processPublished (with conditions)

  POWTS permit applications for land inside Seneca town.

  • Completed application, fee, and conformity determination are required; the administrator may issue a temporary permit if extenuating circumstances exist.

  “A sanitary permit shall be issued by the POWTS Administrator only if a completed application has been made and the appropriate fee paid, and if the POWTS Administrator finds that such application and the proposed installation will be in conformity with this ordinance and other rules of the state, county or applicable township. or if extenuating circumstances exist, the POWTS Administrator may issue a temporary permit.”

Still unanswered

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

• Building permit — Residential construction inside Seneca town.
• Owner-builder exemption — Owner-built dwellings inside Seneca town.
• Building code adopted — Residential construction inside Seneca town.
• Inspections — Residential building work inside Seneca town.
• Certificate of occupancy — New residential buildings inside Seneca town.

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.