Zoning, building permits and septic rules in Derrynane Township, Minnesota

Rules another office applies inside Derrynane Township

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

• Building permitRequired

  Structures in Derrynane township under the Le Sueur County zoning permit, which applies outside city limits

  • This is a county zoning permit; the sources do not address a building code permit or inspection.
  • Fee schedule dated January 2, 2026; permits valid one year, no extensions.
  • After-the-fact permits cost double the fee plus a penalty.
  • Pre-application meetings are required.
  • The county's reach into townships rests on the Section 3 jurisdiction statement.

  “no person shall erect, alter, or move any structures or part thereof without first securing a zoning permit, including but not limited to, all structures, structure additions, manufactured homes, towers, basements, footings, liquid manure storage areas, authorized signs, sewer systems, and repair of sewer systems.”

• Local zoningPresent (with conditions)

  Land inside Derrynane township: the Le Sueur County Zoning Ordinance applies because it covers all area of the county outside the incorporated limits of cities. No township-adopted zoning ordinance was found.

  • Derrynane township is unincorporated, so it is outside city limits; the sources do not name the township.
  • No official statement was found on whether the township has adopted its own zoning.
  • The county ordinance is a county rule, not a township ordinance.

  “the jurisdiction of this ordinance shall apply to all the area of le sueur county outside the incorporated limits of cities.”

• Who permits septicCounty (with conditions)

  Septic systems in Derrynane township: the county environmental services department administers the SSTS program on all county lands outside qualifying incorporated areas

  • The exception is incorporated areas with their own approved SSTS programs; a township is not incorporated.
  • State disposal system permits are also required for some systems, per Section 17.
  • Section 17 took effect April 1, 2022.

  “the jurisdiction of this section shall include all lands of the county except for incorporated areas that administer an ssts program by ordinance within their incorporated jurisdiction”

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.