Bolthole Index

Custer County, South Dakota

Zoning, building permits and septic rules in Town of Hermosa, South Dakota

Town of Hermosa is a town in Custer County, South Dakota. Town of Hermosa adopts its own zoning, so inside its limits Town of Hermosa’s rules apply, not the county’s. 7 rules below are quoted from official sources and independently re-checked, most recently on October 24, 2026. Rules for unincorporated land are on the Custer County page.

Answers from the rulebook for Town of Hermosa

Town of Hermosa’s own rules

  • Local zoningPresent (with conditions)

    Land inside Hermosa town limits.

    • Town zoning is divided into ten district types.
    “For the purpose of promoting the public health, safety, morals, convenience, and the general welfare of the community, the town is hereby divided into districts of ten different types, each being of such number, shape, kind, and area, and such common unity of purpose, and adaptability of use that are deemed most suitable to carry out the purpose of this chapter.”
  • Zoning districtsPublished (with conditions)

    Zoning districts inside Hermosa town limits.

    • District list includes RS, R1, R2, RU, CO, GI, AG, GP, FW, and RA.
    “RS Residential stick built R1 Stick built or manufactured homes R2 Manufactured homes RU Recreational Use CO Commercial GI General Industrial AG Agricultural GP Government/Public Use FW Floodway District RA Residential Agriculture”
  • Manufactured homesLimited

    Manufactured homes in the R1 and R2 zoning districts inside Hermosa town limits.

    • R1 is identified as stick-built or manufactured homes; R2 is identified as manufactured homes.
    “R1 Stick built or manufactured homes R2 Manufactured homes”
  • Off-grid sanitationLimited

    Privies, septic tanks, cesspools, and other sewage-disposal facilities inside Hermosa town limits.

    • The prohibition is expressly subject to provisions later in Chapter 51.
    “Except as hereinafter provided, it shall be unlawful to construct or maintain any privy, privy vault, septic tank, cess pool, or other facility intended or used for the disposal of sewage.”
  • Permit feesVariable (with conditions)

    Building permits inside Hermosa town limits.

    • Fee is set by the Board of Trustees under the current fee schedule.
    • A specific current dollar amount was not published in the opened section.
    “If the application is approved, the applicant may then purchase the building permit from the Treasurer at a price set by the Board of Trustees. The price shall be in an amount set by the Board of Trustees, as per the current fee schedule.”

Rules another office applies inside Town of Hermosa

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

  • Lot coverageSpecified

    Main and accessory buildings in the RS Residential District inside Hermosa town limits.

    maximum lot coverage: <= 40 percent (Main and accessory buildings in RS.)

    “Maximum lot coverage. Main and accessory buildings shall cover not more than 40% of the lot area.”
  • Building heightSpecified

    Main buildings in the RS Residential District inside Hermosa town limits.

    • Exception is cross-referenced to § 155.57.

    maximum main-building height: <= 35 feet (Except as provided in § 155.57.) · maximum stories: <= 2.5 stories (Except as provided in § 155.57.)

    “Height regulations. No main building shall exceed two and one-half stories or 35 feet in height, except as provided in § 155.57.”

Still unanswered

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

  • Owner-builder exemption — Owner-built residences inside Hermosa town limits.
  • Inspections — Building construction inside Hermosa town limits.
  • Certificate of occupancy — Occupancy of structures inside Hermosa town limits.
  • Minimum dwelling size — Dwellings in Hermosa zoning districts.
  • Living in an RV — RV occupancy on private land inside Hermosa town limits.
9 more unanswered
  • Camping on your land
  • Tiny homes
  • Septic permit
  • Septic inspection
  • Well permit
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

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 Hermosa publishes no rule on the point, not that none exists. Custer County’s page lists the county offices to call.

Off-grid gear

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

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