Zoning, building permits and septic rules in St. Onge Township, South Dakota

St. Onge Township’s own rules

• Building permitRequired

  New construction, additions, decks, replacement decks, and moved buildings, including mobile homes, on land inside St. Onge Township subject to Lawrence County's unincorporated-area zoning jurisdiction.

  • Any lot under 40 acres must be platted before a building permit can be issued.
  • Only one single-family or multifamily dwelling may receive a permit per lot, and the applicable zoning-district density may not be exceeded.
  • Dirt work may begin before permit issuance, but concrete forms may not be set without a permit.
  • New driveways, approaches, or access points from a county or state road require the appropriate county or state permit before issuance of the building permit.
  • Upon filing, the applicant must pay the applicable County Chapter 21 fee.
  • The County may require additional information, including outside engineer, plan, or inspector review; wetland, stream, geotechnical, on-site wastewater, percolation-test, or soil-profile information, at the owner's expense.
  • County zoning applies to unincorporated land except areas where joint zoning jurisdiction has been granted to a municipality.

  platting threshold: < 40 acres (Lot must be platted before a building permit can be issued.) · dwellings per lot: 1 dwelling per lot (Applicable zoning-district density may not be exceeded.)

  “Buildings permits shall be required for all new construction, additions to structures, decks, replacement of decks, and moving of any buildings, to include mobile homes. Dirt work may be started prior to issuance of a building permit, but no concrete forms may be set without a building permit.”

• Local zoningPresent (with conditions)

  Land inside St. Onge Township, Lawrence County, South Dakota. The applicable zoning is administered by Lawrence County, not shown by the official sources as a Township-adopted ordinance.

  • Lawrence County's zoning regulations cover unincorporated land, except areas with joint zoning jurisdiction granted to a municipality.
  • Lawrence County identifies St. Onge as its sole organized township; it is not among the four municipalities identified by the County (Spearfish, Deadwood, Lead, and Whitewood).

  “The regulations are intended to preserve and protect existing property uses and values against adverse or unharmonious adjacent uses by zoning all unincorporated land except those areas where joint zoning jurisdiction has been granted to a municipality.”

• Who permits septicCounty (with conditions)

  On-site wastewater treatment systems inside St. Onge Township subject to Lawrence County's unincorporated-area zoning jurisdiction.

  • A septic permit is required before installation or modification of any wastewater treatment system.
  • A modification includes a repair requiring relocation or replacement of a drainfield or septic tank.
  • The applicant must provide required residential or commercial facility information to a professional engineer, hire a state-certified installer, and complete an on-site location evaluation.
  • Percolation tests must be supervised by the engineer or a state-certified installer approved by the engineer; the engineer should require a soil profile.
  • The engineer must design the system after evaluation of percolation-test data and/or soil profile; for a commercial facility or a system serving more than one residence, the engineer's design must be provided to DENR for review and approval.
  • A building permit for a residence or commercial facility requiring wastewater treatment may not issue until a professional engineer has designed the system.
  • The installer must contact the engineer at least 12 hours before inspection after completion, and the system may not be covered until inspection is complete.
  • County zoning applies to unincorporated land except areas where joint zoning jurisdiction has been granted to a municipality.

  inspection notice: >= 12 hours (Installer must contact the engineer before inspection after system installation is complete.)

  “A septic permit shall be required prior to the installation or modification of any wastewater treatment system. The term modification shall include any repair that requires the relocation or replacement of any drainfield or septic tank.”

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.