Bolthole Index

Fall River County, South Dakota

Building permits, zoning and land rules in Fall River County, South Dakota

52Index Score / 100
#16 of 66 in South Dakota

Unincorporated Fall River County, South Dakota requires a county building permit only when the building site lies within the floodplain; outside that condition, the county says it does not issue building permits, although state plumbing and electrical requirements still apply.1 The county does not administer planning and zoning outside Hot Springs and Edgemont, while septic systems must comply with South Dakota rules.23

At a glance

County building permit
Required only when the building lies within the floodplain in unincorporated Fall River County1
County zoning
No county planning and zoning outside Hot Springs and Edgemont2
Septic authority
South Dakota Department of Agriculture and Natural Resources3
Owner electrical work
A qualifying resident owner may do electrical work under a homeowner permit, but inspection still applies4
Minimum home size
No county-zoning minimum outside Hot Springs and Edgemont; other rules still apply5
Off-grid sanitation
Alternative systems are conditional and some require state approval before installation6
County-road driveway
An approach easement is required for direct access to a county road7

Who to call

Floodplain permits

Fall River County GIS Department

Checks whether a proposed building site is in the floodplain for the county permit process

605-745-5136

Property records

Fall River County Director of Equalization

Receives reports of new structures and other changes to property

605-745-5136

Online permits →

Septic permits

South Dakota DANR On-Site Wastewater Systems

State on-site wastewater design requirements and installation-plan questions

(605) 773-4647

[email protected]

Roads & driveways

Fall River County Highway Department

County-road approach permits and specifications

605-745-5137

27518 Cascade Rd, Hot Springs, SD 57747

Online permits →

Contact details are copied from each office’s official page and were checked against it on September 27, 2026.

Do you need a building permit in Fall River County, South Dakota?

A county building permit is required in unincorporated Fall River County only when the proposed building lies within the floodplain.1 Outside the floodplain condition, Fall River County says there are no county building permits, but homeowners still must comply with South Dakota plumbing and electrical permitting.1 The county also requires owners to report a new structure, addition, relocated mobile home, demolition or major unrepaired damage to the Director of Equalization.8

Floodplain work is not a paperwork exception: development in the floodplain requires a permit, and the county GIS Department determines whether the proposed site is mapped there.9 Give GIS the proposed building location before finalizing a house pad or site plan.10 We could not confirm a general county building-code adoption or a certificate-of-occupancy requirement for unincorporated land, so ask GIS about those points when the parcel or project is unusual.10

Who handles Fall River County building permits and inspections?

Fall River County does not describe a general rural building department; the county directs floodplain-location questions to the GIS Department and property-change reports to the Director of Equalization.18 The GIS Department can check the proposed building site and explain the floodplain permit path.10 The Director of Equalization receives notice of new structures and other property changes.11

State trade permits remain part of the job even when no general county building permit applies.1 South Dakota requires a plumbing inspection certificate for covered plumbing installations outside cities that run their own inspection systems.12 Electrical work subject to state inspection needs a rough-in inspection before it is covered and a final inspection before occupancy.13 County-road access is separate again: the Fall River County Highway Department provides the approach-permit form and specifications.14

Does Fall River County have zoning?

Fall River County says there is no planning and zoning outside the incorporated cities of Hot Springs and Edgemont.2 That means unincorporated land has no county-zoning minimum dwelling size, minimum lot size, building-height limit, lot-coverage limit or zoning setback.515161718 It does not erase floodplain, septic, utility, access or state trade rules.9197

Inside Hot Springs or Edgemont, contact the relevant city because municipal zoning and building rules may apply.20 Plats adjacent to either city, including lots in subdivisions adjacent to a city boundary, require approval from both the county commissioners and the city.21 Before assuming a rural parcel is outside municipal jurisdiction, verify the parcel location and whether a proposed split triggers the joint plat process.21

How do septic permits work in Fall River County?

On-site wastewater systems in Fall River County must comply with South Dakota regulations, administered by the South Dakota Department of Agriculture and Natural Resources.3 The state standards are minimum requirements, and local governments may impose stricter ones.22 DANR publishes installation requirements and a checklist for plans, while the South Dakota Plumbing Commission certifies installers.23

Do not assume a conventional drain field will work merely because county zoning is absent. Only 12.5% of mapped county soils are rated without severe limitations for a conventional septic drain field, so a site evaluation should be an early due-diligence item.24 If public wastewater is available, state rules do not allow an on-site system; where sewer is unavailable, an approved on-site septic system or other treatment process is required.19 We could not confirm a universal septic-permit or countywide septic-inspection requirement, so ask DANR what review the specific system design needs before excavation.23

Can you live in an RV or tiny home in Fall River County?

Fall River County's lack of county zoning outside Hot Springs and Edgemont removes county-zoning minimum dwelling size and setback rules, but it does not by itself authorize full-time RV occupancy or eliminate sanitation requirements.2518 We could not confirm a county rule expressly allowing full-time residence in an RV, so ask the county GIS Department about the parcel and proposed use before buying.10

A tiny home on unincorporated land still faces the same floodplain trigger, state plumbing and electrical requirements, and wastewater rules as another dwelling.193 Where water or electricity is unavailable, South Dakota allows specified alternative sanitation systems, but systems other than vault privies are treated as experimental and require plans and specifications to be approved before installation.6 A qualifying owner who lives in the residence or farmstead may personally perform electrical work under the state's licensure exemption, but must obtain a homeowner permit and pass inspection.4

What steps should you follow before building in Fall River County?

  1. Confirm that the parcel is outside Hot Springs and Edgemont; city rules apply inside those municipalities, and some plats near their boundaries need both city and county approval.2021
  2. Send the proposed building location to Fall River County GIS and determine whether a floodplain permit is required.910
  3. Plan wastewater with DANR and a certified installer, especially because most mapped soils have severe limitations for a conventional drain field.324
  4. Determine the state plumbing and electrical permits and inspection sequence before work is covered.1213
  5. Obtain an approach easement from the Highway Department if the driveway exits directly onto a county road; state-highway access instead requires South Dakota Department of Transportation permission.725
  6. Report the completed property change to the Fall River County Director of Equalization.811

What should you check before buying land in Fall River County?

Start with water, wastewater, flood exposure and legal access. Rural water service does not reach every Fall River County property, and a public sewer connection rule was not established for every rural parcel.19 A water-right permit is required only for proposed uses that fall within South Dakota's permitting requirements; when one is required, approval must come before well drilling.26

Check the precise homesite rather than relying on a parcel-level impression. The county GIS Department determines floodplain status, while the soils data show only 12.5% of mapped soils without severe limitations for a conventional drain field.924 Confirm whether access is from a county road or state highway because the approving authority changes.725 Finally, budget for an effective property-tax rate of about 1.1% and a median annual property-tax bill of about $1,876, while recognizing that the actual assessment depends on the property.2728

Watch-outs

  • No county zoning does not mean no permit obligations: floodplain construction and state plumbing and electrical work remain regulated.12
  • A driveway connecting directly to a county road needs an approach easement from the county highway superintendent before the access work proceeds.7
  • We could not confirm county fees, a general certificate-of-occupancy rule or a universal septic-permit requirement; ask the relevant county office and DANR before setting a construction budget.1023

Sources

  1. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  2. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  3. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  4. South Dakota Electrical Commission - Homeowner Wiring (South Dakota statewide rule), quoted and re-checked
  5. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  6. Administrative Rule 74:53:01 — Individual and Small On-Site Wastewater Systems (South Dakota statewide rule), quoted and re-checked
  7. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  8. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  9. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  10. Fall River County GIS Department (fallrivercountysd.gov)
  11. Fall River County Director of Equalization (fallrivercountysd.gov)
  12. South Dakota Plumbing Commission - Inspections (South Dakota statewide rule), quoted and re-checked
  13. South Dakota Electrical Commission - Homeowner Wiring (South Dakota statewide rule), quoted and re-checked
  14. Fall River County Highway Department (fallrivercountysd.gov)
  15. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  16. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  17. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  18. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  19. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  20. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  21. Planning & Zoning - Fall River County, South Dakota, quoted and re-checked
  22. On-Site Wastewater Systems in South Dakota (South Dakota statewide rule), quoted and re-checked
  23. South Dakota DANR On-Site Wastewater Systems (danr.sd.gov)
  24. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  25. Instructions: Applying for permission for driveway or intersection on a South Dakota state highway (South Dakota statewide rule), quoted and re-checked
  26. South Dakota Water Rights — Drilling a Well (South Dakota statewide rule), quoted and re-checked
  27. Effective property tax rate: Bolthole Index county data
  28. Median property tax bill: Bolthole Index county data

Written September 27, 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.

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County locator

Fall River County in South Dakota

52
County map
Fall River County highlighted among the South Dakota counties · colored by Index score

How Fall River County scores

Seclusion86100% ev.
Self-Sufficiency21100% ev.
Admin Boringness79100% ev.
Durability36100% ev.
Property Autonomy67100% ev.
Carry Cost78100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$294kTypical home
1.1%Property tax
$1,082Land / acre
17.5"Annual rain
18.4% of yrsSevere drought
18.7 / yr (+13.8)Mid-century 100°F days
21.3 daysMid-century dry spell
1.11" (+4.4%)Mid-century 1-day rain
1.31×Wildfire change factor
100%Forward climate coverage
$1,890Home insurance / yr
3.2% / yrInsurance growth
1.52%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
1,134Radius comparison (15 mi)
4.2People / sq mi
26%Federal land
77.5%Land at 15% slope or less
12.5%Septic soil without severe limits
137,168 acWorkable land screen
5.6%Wooded land
11.5 tonsBiomass / forest ac
47.9°FAvg temp

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Answers from the rulebook for Fall River County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Fall River County rules

  • Building permitLimited

    Buildings in unincorporated Fall River County outside Hot Springs and Edgemont.

    • A county building permit is required when the building lies within the flood plain.
    • There are no county building permits outside that condition, but state plumbing and electrical permitting remains required.
    • Property changes must be reported to the Director of Equalization.
    “Building Permit: A permit is only required if your building lies within the flood plain (see #2 below).”
  • County-wide zoningAbsent

    County zoning outside the incorporated cities of Hot Springs and Edgemont.

    • The county page states that city areas should contact the respective city halls for building permits and information.
    “Outside of Edgemont and Hot Springs [...] There is no planning and zoning.”
  • Local zoningVaries (with conditions)

    Aggregate local land-use regulation in Fall River County, including unincorporated areas and incorporated Hot Springs and Edgemont.

    • The county states there is no planning and zoning outside Hot Springs and Edgemont; municipal rules may apply inside those cities.
    • This is an aggregate conclusion and does not claim the county administers municipal ordinances.
    “Zoning Ordinance The Zoning Ordinance includes everything from zoning districts, setbacks, permitted uses, accessory structure requirements, parking and signage requirements, home occupations, non-conforming uses, enforcement, variances and the vacating of right of ways.”
  • Minimum dwelling sizeNone

    County zoning minimum dwelling size outside Hot Springs and Edgemont.

    • State septic minimum-lot requirements and other non-zoning rules still apply.
    “Outside of Edgemont and Hot Springs [...] There is no planning and zoning.”
  • Minimum lot sizeNone

    County zoning minimum lot size outside Hot Springs and Edgemont.

    • State septic rules separately require minimum lot sizes for specified wastewater and water-supply configurations: 20,000 square feet, or 43,560 square feet when potable water is supplied by a private water supply on the lot.
    “Outside of Edgemont and Hot Springs [...] There is no planning and zoning.”
  • SetbacksNone

    County zoning setbacks outside Hot Springs and Edgemont.

    • The county warns that topography can cause issues meeting other setback requirements; state septic requirements may apply.
    “Outside of Edgemont and Hot Springs [...] There is no planning and zoning.”
  • Lot coverageNone

    County zoning lot-coverage limits outside Hot Springs and Edgemont.

    • Non-zoning state, septic, floodplain, and municipal rules may still apply.
    “Outside of Edgemont and Hot Springs [...] There is no planning and zoning.”
  • Building heightNone

    County zoning building-height limits outside Hot Springs and Edgemont.

    • Non-zoning state, septic, floodplain, and municipal rules may still apply.
    “Outside of Edgemont and Hot Springs [...] There is no planning and zoning.”
  • Who permits septicState (with conditions)

    On-site septic systems throughout Fall River County.

    • The county directs residents to the South Dakota Department of Agriculture and Natural Resources and states that septic systems must comply with state regulations.
    • South Dakota identifies its requirements as state minimum standards and local governments may impose more stringent rules.
    “South Dakota's regulations for on-site wastewater systems are found in the Administrative Rules of South Dakota, Chapter 74:53:01 at this link.”
  • Off-grid sanitationAllowed (with conditions)

    Sanitation where public sewer service is unavailable in rural Fall River County.

    • An approved on-site septic system or other treatment process is required when sewer service is unavailable.
    • State septic regulations and installer requirements apply.
    “Vault privies, chemical toilets, incinerator toilets, or composting units shall be used when a water or electrical system is not available.”
  • Mandatory utility hookupConditional

    Water, sewer, and wastewater arrangements for rural properties in unincorporated Fall River County.

    • Water and rural water service are not available to every property.
    • If sewer service is unavailable, an approved on-site septic system or other treatment process is required.
    • A public sewer connection rule was not established by the reviewed county sources.
    “No person may construct, install, or operate an on-site wastewater system where a public wastewater system is available.”
  • Subdividing landLimited

    Platting and subdivision-related approvals in Fall River County.

    • Plats adjacent to Hot Springs or Edgemont, or lots in subdivisions adjacent to city boundaries, must be approved by both county commissioners and the city.
    • The county identifies Ordinances 2012-02 and 2018-01 as county plat ordinances.
    “If you are platting land that is adjacent to the city boundary or if you are platting a lot(s) that exist in a subdivision adjacent to the city boundary your plat must be approved by both the county commissioners and the city.”
  • Driveway accessRequired

    Driveways exiting directly onto a county road.

    • An approach easement must be obtained from the county highway superintendent.
    • Permits and specifications are located under the county highway department.
    “If your driveway exits directly onto a county road it is necessary to obtain an approach easement from the county highway superintendent.”
  • Building in a floodplainRequired

    Construction within the flood plain in unincorporated Fall River County.

    • A permit is required to build within the flood plain.
    • The county GIS department determines whether a building site lies within the flood plain.
    • A Letter of Map Amendment may be filed with FEMA to contest the mapped location.
    “A permit is required to build within the flood plain.”
  • Permit processPartial

    Building, floodplain, property-change reporting, and driveway-access processes outside Hot Springs and Edgemont.

    • Floodplain status is checked through the county GIS department.
    • A driveway exiting directly onto a county road requires an approach easement from the county highway superintendent.
    • Property changes must be reported to the Director of Equalization.
    • The county page does not provide a complete universal permit workflow.
    “A permit is required to build within the flood plain. To find out if your building site is within the flood plain contact the GIS department at: 605-745-5136”

South Dakota rules that apply here

  • Owner-builder exemptionAvailable (with conditions)

    An individual owner personally installing electrical wiring and fixtures in a residence or farmstead owned and resided in by that individual.

    • The exemption is from electrical licensure requirements, not from permitting or inspection.
    • An approved homeowner permit must be obtained before electrical work begins.
    • The exemption does not apply to commercial or rental property.
    • Mobile-home and modular-home installations are allowed only when the unit is on an owner-occupied lot at the time of installation; otherwise a licensed South Dakota electrical contractor is required.
    • A final inspection is required before occupancy.
    “an "owner's exemption" as an exemption from licensure requirements”
  • InspectionsRequired

    Plumbing installations in South Dakota outside cities that administer their own plumbing inspection requirements.

    • The exception is for cities with their own inspection requirements.
    • Inspection requests generally require at least 72 hours advance notice, excluding weekends and holidays.
    • Inspections occur after a plumbing installation certificate is secured.

    installation certificate fee: 20 USD · single-family inspection fee: 110 USD · small-structure inspection fee: 100 USD (Five or fewer fixtures.) · large-structure inspection fee: 275 USD (Six or more fixtures.)

    “You must have a plumbing inspection certificate for all plumbing installations.”
    2 more reviewed findings on this topic
  • Well permitLimited

    Water-well drilling and proposed water uses statewide in South Dakota.

    • A water-right permit is required only for proposed water uses that fall within the permitting requirements; the official page directs applicants to the Using Water in SD page to determine whether a permit is needed.
    • When a water-right permit is required, state law requires approval before well drilling.
    • The chief engineer may permit construction of a test well before obtaining the water-right permit; the test well may serve as the production well if the application is approved.
    • A water-right permit, when required and approved, provides five years to construct the water-use system and an additional four years to place all water to beneficial use.
    • A well driller's license is required before drilling any well or contracting to drill a well.

    construction period after water-right permit approval: 5 years · period to place water to beneficial use: 4 years

    “If a water right permit is needed, state law requires the permit to be approved prior to doing any well drilling.”
  • Agricultural exemptionAvailable (with conditions)

    Farmsteads and accessory structures or buildings thereto under South Dakota's default construction-design standard when the local unit of government has not adopted an ordinance prescribing standards under SDCL 11-10-5.

    • The default standard applies to building work commenced after July 1, 2026.
    • The local unit of government may adopt an ordinance allowing local administration and enforcement of the design standard.
    • The exclusion is from SDCL 11-10-6's default 2024 International Building Code design standard; it does not establish that all local zoning, building, occupancy, or other requirements are waived.
    • The statute defines farmstead as a farm or ranch, including any structure or building located on the land.
    • Residential structures and mobile or manufactured homes are also excluded from this specific default-standard provision.

    construction commencement date: > 2026-07-01 (The provision applies to buildings commenced after July 1, 2026.) · building standard: 2024 International Building Code (The default standard does not apply to a farmstead or accessory structure or building thereto.)

    “farmstead and any accessory structure or building thereto.”
  • Permit feesPublished (with conditions)

    South Dakota state electrical wiring permits, including residential and farmstead wiring subject to state administration.

    • A wiring permit is required for electrical service entrances over 60 amperes, owner-exemption wiring, and other installations with an estimated inspection fee of at least $30.
    • Local inspection systems may have their own procedures, inspection fees, and regulations.
    • Inspection fees are separate from the $20 wiring-permit fee.

    wiring permit fee: 20 USD · permit validity: 3 years (A new permit is required if the installation extends beyond three years.) · late permit administrative fee: 250 USD (Applies when the permit is not dated at job start or is not renewed before expiration.)

    “A wiring permit may be obtained for twenty dollars from the commission office. A wiring permit is valid for three years from the date the permit is issued.”
  • county zoning authorityGeneral

    South Dakota county boards' authority to adopt zoning ordinances, including for unincorporated county land.

    • The authority is granted for promoting the health, safety, or general welfare of the county.
    • The statute authorizes regulation of building and land-use characteristics including height, number of stories, building and structure size, lot coverage, yards, courts, open spaces, population density, and locations and uses of buildings, structures, and land.
    • The authorized purposes expressly include trade, industry, residence, flood plain, and other purposes.
    • This claim identifies statewide enabling authority; whether a particular county has adopted an ordinance is a separate local question.
    “For the purpose of promoting health, safety, or the general welfare of the county the board may adopt a zoning ordinance to regulate and restrict the height, number of stories, and size of buildings and other structures, the percentage of lot that may be occupied, the size of the yards, courts, and other open spaces, the density of population, and the location and use of buildings, structures, and land for trade, industry, residence, flood plain, or other purposes.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Building code adopted — County building-code adoption in unincorporated Fall River County.
  • Certificate of occupancy — Certificates of occupancy in unincorporated Fall River County.
  • Septic permit — Permitting of septic systems in Fall River County.
  • Septic inspection — Inspection of septic systems in Fall River County.
  • Short-term rentals — Short-term rental regulation in Fall River County.

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.

Living off-grid in Fall River County, South Dakota

Is Fall River County a good place to live off-grid or homestead?

Fall River County scores 52/100 on the Bolthole Index, a solid county profile. Its strengths: deep seclusion — about 1,134 people within 15 miles and low administrative friction for a quiet rural property. Watch-outs: thin water margin (17.5″/yr rainfall) and elevated mid-century heat, water, rain, or wildfire exposure.

Do you need a building permit in Fall River County, South Dakota?

Fall River County requires a building permit only in limited cases (such as floodplains or specific zones), and it has no county-wide zoning. Onsite septic is permitted by South Dakota Department of Agriculture and Natural Resources (DANR). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Fall River County, South Dakota?

Land in Fall River County runs about $1,082 per acre, based on the latest county data.

What is the water situation in Fall River County?

Fall River County gets about 17.5" of rain a year, with severe drought in roughly 18.4% of years.

How remote is Fall River County?

A typical private-land location has about 1,134 people within 15 miles and 272,310 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

Off-grid gear

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

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How Fall River compares in South Dakota

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