Bolthole Index

Moody County, South Dakota

Building permits, zoning and septic rules in Flandreau, South Dakota

Flandreau, South Dakota requires a building permit for any structure built, moved, added to or structurally altered inside city limits1. The city sets its own zoning2 and issues permits through the city office3. Septic systems inside the city need Board of Adjustment approval4. Land outside city limits falls under Moody County instead.

At a glance

Building permit
Required inside Flandreau city limits1
Permit fee
$15 plus $1 per thousand dollars over $5,0003
Zoning
City zoning applies to all territory within city boundaries2
Septic
Board of Adjustment approval; existing septic tanks are nonconforming45
City sewer
Connect within 90 days of notice if a public sewer is within 200 feet6
Manufactured homes
Allowed only if they meet Type I or Type II standards7

Who to call

Building permits

City of Flandreau (city office, building permits)

Building permits and zoning information inside Flandreau

605-997-2492

1005 W. Elm Ave., Flandreau, SD 57028

Contact details are copied from each office’s official page and were checked against it on October 24, 2026.

Off-grid gear

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

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Do you need a building permit in Flandreau, SD?

Yes. Flandreau's zoning chapter says no building or other structure may be erected, moved, added to or structurally altered without a permit1. The permit is issued by the city's Administrative Official, and the work must conform to the city's zoning chapter1.

The city has not adopted the 2021 International Building Code8, and it does not provide inspection services to enforce that code9. Applicants for structures that must meet the IBC-based design standard supply a legal affidavit of compliant design and construction9. A homeowner doing their own wiring is exempt from the electrical license requirement but still needs a state homeowner permit before starting10.

Who issues building permits in Flandreau, and what do they cost?

Building permits come from the city office at 1005 W. Elm Ave., reached at 605-997-24923. The city office lists the building permit fee as $15 plus $1 per thousand over $5,0003. Permits that need a variance, special exception or rezoning go to the planning and zoning commission instead3. The city office also publishes a building permit application and sketch instructions3.

Does Flandreau have zoning, and what does it mean for lot size and setbacks?

Yes. Flandreau's zoning chapter applies to all territory within the city boundaries shown on its Official Zoning Map2. Rules differ by district. In the R1 Single-Family Residential District, a single-family or modular home needs a lot of at least 9,750 square feet and 75 feet of width11. R1 allows up to 35% lot coverage12 and buildings up to 35 feet tall13. R1 homes need a 25-foot front yard, a 20-foot rear yard and 9-foot side yards14.

Manufactured homes must meet Type I or Type II standards. Type I homes need more than 1,100 square feet of occupied space and may be no more than 15 years old, while Type II homes need more than 700 square feet7. Dividing land requires going through the city's subdivision chapter, with preliminary and final plat approval15.

How do septic permits work inside Flandreau?

Septic is tightly limited inside city limits. Private wastewater systems need a sewage disposal system approved by the city Board of Adjustment4. Existing septic tanks are treated as nonconforming uses5. A property abutting a street or alley with a public sewer within 200 feet must connect at the owner's expense within 90 days after official notice6.

The on-site exception is narrow: it covers systems installed under state Department of Environment and Natural Resources rules on city-owned or city-developed property more than one-fourth mile from a city sewer line5. We could not confirm a city septic-permit procedure, so call the city office before planning any on-site system3.

Can you live in an RV or tiny home in Flandreau?

We could not confirm Flandreau's rules for living in an RV, camping on private land, tiny homes or accessory dwellings. Call the city office at 605-997-2492 before parking an RV or placing a small dwelling on a lot3. Manufactured homes have clear standards: they must meet Type I or Type II requirements, with a pre-placement inspection by the Administrative Official for Type I7.

Building a home in Flandreau: the steps, in order

  1. Confirm the lot's zoning district and setbacks with the city office2.
  2. Check whether a public sewer lies within 200 feet of the lot line, since connection may be required6.
  3. Submit the building permit application and sketch to the city office, with the fee3.
  4. If the project needs a variance, special exception or rezoning, expect review by the planning and zoning commission3.
  5. Arrange any needed septic approval from the Board of Adjustment4.
  6. Get a state homeowner permit before doing your own electrical work10.

What stays with Moody County?

Flandreau is in Moody County, and the county's zoning ordinance covers only unincorporated areas16. If the land is outside city limits, use the Moody County page for the county's answers. Moody County's typical home value is about $309,27617, and its effective property tax rate is 1.1%18.

Watch-outs

  • Flandreau's rules apply only inside city limits; outside them, Moody County's zoning ordinance applies16.
  • We could not confirm Flandreau's rules for RV occupancy, floodplain development or a certificate of occupancy, so ask the city office at 605-997-2492 before buying3.
  • The city does not inspect IBC-standard structures, so applicants must supply an affidavit of compliant design and construction9.

Sources

  1. § 155.175 Permits required (Flandreau), quoted and re-checked
  2. § 155.002 Title and jurisdiction (Flandreau), quoted and re-checked
  3. City of Flandreau (city office, building permits) (cityofflandreau.com)
  4. § 155.237 Private wastewater treatment systems (Flandreau), quoted and re-checked
  5. § 155.237 Private wastewater treatment systems (Flandreau), quoted and re-checked
  6. § 52.26 Public sewers required (Flandreau), quoted and re-checked
  7. § 155.239 Type I and Type II manufactured homes (Flandreau), quoted and re-checked
  8. § 155.244 Adoption of Building Code (Flandreau), quoted and re-checked
  9. § 155.244 Adoption of Building Code (Flandreau), quoted and re-checked
  10. South Dakota Electrical Commission - Homeowner Wiring (2026 county census)
  11. § 155.060 Lot, yard, and height specifications (Flandreau), quoted and re-checked
  12. § 155.060 Lot, yard, and height specifications (Flandreau), quoted and re-checked
  13. § 155.060 Lot, yard, and height specifications (Flandreau), quoted and re-checked
  14. § 155.060 Lot, yard, and height specifications (Flandreau), quoted and re-checked
  15. Chapter 154: Subdivisions (Flandreau), quoted and re-checked
  16. Moody County Zoning Ordinance Clean update (2026 county census)
  17. Typical home value (Zillow): Bolthole Index county data
  18. Effective property tax rate: Bolthole Index county data

Written October 24, 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.

Answers from the rulebook for Flandreau

Flandreau’s own rules

  • Building permitRequired

    Buildings and structures inside Flandreau city limits.

    • Permit must be issued by the Administrative Official and conform to Chapter 155, unless a written Board of Adjustment order provides administrative review, conditional-use, or variance relief.
    • parameters not applicable
    “No building or other structure shall be erected, moved, added to, or structurally altered without a permit”
  • Building code adoptedNot adopted (with conditions)

    Buildings inside Flandreau city limits.

    • For non-excepted buildings commenced after July 1, 2021, the design standard is based on the IBC Code; residential one- and two-family dwellings, qualifying townhouses, manufactured homes, and accessory structures are excepted from that stated standard.
    “The City of Flandreau has not adopted the 2021 edition of the International Building Code”
  • InspectionsLimited

    Structures required to comply with the IBC-based design standard inside Flandreau city limits.

    • The city does not provide IBC enforcement inspection services; applicants for structures required to comply must provide a legal affidavit of compliant design and construction.
    “The city does not provide inspection services related to the enforcement of the IBC Code.”
  • Local zoningPresent (with conditions)

    All territory within Flandreau city boundaries as established on its Official Zoning Map.

    “The provisions of this chapter shall apply to all territory within the boundaries of the city”
  • Manufactured homesLimited

    Type I and Type II manufactured homes inside Flandreau city limits.

    • Type I requires more than 1,100 square feet, permanent anchoring/foundation requirements, pre-placement Administrative Official inspection and approval, specified roof/siding/roofing requirements, and age no greater than 15 years. Type II requires more than 700 square feet and other stated installation and appearance requirements. An older home may receive a special permitted-use permit subject to the stated application, compliance, and adjacent-owner-consent requirements.

    Type I occupied space: > 1100 square feet (Double-section or larger multi-section unit.) · Type II occupied space: > 700 square feet (Single, double, expando, or multi-section unit.) · maximum home age: <= 15 years (Special permitted-use exception is stated in § 155.239(F).)

    “Have more than 1,100 square feet of occupied space”
  • Who permits septicMixed (with conditions)

    Private wastewater systems and sewage disposal for land inside Flandreau city limits.

    • City Board of Adjustment approval is required for the sewage disposal system. The stated on-site exception refers to systems installed under state Department of Environment and Natural Resources regulations and only city-owned or city-developed property farther than one-fourth mile from an existing city sanitary-sewer collection line.
    “must be connected to a sewage disposal system approved by the Board of Adjustment.”
  • Off-grid sanitationLimited

    On-site sewage disposal for structures inside Flandreau city limits.

    • Existing septic tanks are nonconforming. The stated on-site exception is limited to city-owned or city-developed property farther than one-fourth mile from an existing city sanitary-sewer collection line, installed under state Department of Environment and Natural Resources regulations. Where city sewer is available within 200 feet, the structure must connect at the landowner's cost.

    distance from existing city sewer collection line: > 0.25 mile (Only for the stated city-owned or city-developed property exception.) · city sewer availability: <= 200 feet (Requires connection at landowner's cost.)

    “All existing septic tanks shall be considered non-conforming uses.”
  • Mandatory utility hookupSewer (with conditions)

    Properties inside Flandreau city limits that abut a street, alley, or right-of-way containing a city public, sanitary, or combined sewer within 200 feet of the property line.

    • Connection is at the owner's expense and must occur within 90 days after official notice.

    public sewer distance from property line: <= 200 feet (Property must meet the stated abutting-location condition.) · connection deadline after official notice: <= 90 days

    “within 90 days after date of official notice to do so provided that said public sewer is within 200 feet”
  • Subdividing landRegulated (with conditions)

    Subdivisions inside Flandreau city limits.

    • The published subdivision chapter lists a general procedure, advisory meeting, preliminary-plat approval, and final-plat approval.
    “Application Procedure and Approval Process [...] Preliminary plat approval [...] Final plat approval”

Rules another office applies inside Flandreau

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

  • Minimum lot sizeSpecified

    Single-family residential/modular homes in the R1 Single-Family Residential District.

    • Other permitted and conditional uses are determined by the Board of Adjustment; attached individually owned single-family units are subject to the table's stated subdivision and shared-structure rules.

    minimum lot area: >= 9750 square feet (Single Family Residential/Modular Home.) · minimum lot width: >= 75 feet (Single Family Residential/Modular Home.)

    “Single Family Residential/Modular Home 9,750 square feet”
  • SetbacksSpecified

    Single-family residential, Type I manufactured-home, and modular-home development in the R1 Single-Family Residential District.

    • Setbacks are measured from the wall line; required yards allow overhangs of 24 inches or less. The stated block-average rule applies to the secondary front setback and prohibits a setback below 12.5 feet. Accessory structures have the stated alley and § 155.232(L) exception.

    primary front yard: >= 25 feet · secondary front yard: >= 12.5 feet (Subject to stated block-average rule.) · rear yard: >= 20 feet · side yard: >= 9 feet

    “Single Family Residential/Type I Manufactured Home/Modular Home 25' 12.5' 20' 9'”
  • Lot coverageSpecified

    Single-family residential/modular homes in the R1 Single-Family Residential District.

    maximum lot coverage: <= 35 percent (Single Family Residential/Modular Home.)

    “Single Family Residential/Modular Home 9,750 square feet 75' 35' 35%”
  • Building heightSpecified

    Single-family residential/modular homes in the R1 Single-Family Residential District.

    maximum building height: <= 35 feet (Single Family Residential/Modular Home.)

    “Single Family Residential/Modular Home 9,750 square feet 75' 35' 35%”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Flandreau or Moody County directly.

  • Owner-builder exemption — Owner-built residences inside Flandreau city limits.
  • Certificate of occupancy — Occupancy of buildings inside Flandreau city limits.
  • Living in an RV — RV occupancy on private land inside Flandreau city limits.
  • Camping on your land — Temporary camping on private land inside Flandreau city limits.
  • Tiny homes — Tiny-home occupancy inside Flandreau city limits.
8 more unanswered
  • Accessory dwellings
  • 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 Flandreau publishes no rule on the point, not that none exists. Moody County’s page lists the county offices to call.

← All of Moody County: county rules, score and offices