Charles Mix County, SD Building Permits, Zoning & Septic

Charles Mix County, South Dakota requires a county building permit outside any city or organized township that has its own building-permit program¹². The Director of Equalization Office issues the county permit after receiving the application and fee³. No county zoning ordinance was identified, but an explicit countywide zoning determination could not be confirmed; ask the Director of Equalization Office about the parcel before relying on that classification⁴³. South Dakota administers the on-site wastewater rules⁵.

At a glance

Building permit: Required except where a city or organized township has its own program¹²
Zoning: No county ordinance identified; confirm the parcel with the county⁴
Septic review: State-administered; nonconventional systems need advance approval⁵⁶
RV living: County occupancy rule not confirmed; ask before relying on an RV⁴
Tiny homes: No specific county occupancy or minimum-size rule confirmed⁴
Owner electrical work: Allowed for a qualifying owner-occupied home with a homeowner permit⁷⁸
Private well: A water-right permit may be required before drilling⁹

Who to call

Building permits

Charles Mix County Director of Equalization Office

Charles Mix County building permit applications, fees and permit issuance

(605) 487-7382

PO Box 68, Lake Andes SD 57356-0068

Online permits →

Septic permits

South Dakota DANR Livestock Services Program

Information about South Dakota on-site wastewater system requirements and plan submissions

(605) 773-4647

[email protected]

523 E Capitol Ave, Pierre, SD 57501-3182

Building permits

Charles Mix County Director of Equalization Office

Scope and requirements of the Charles Mix County building-permit ordinance

Contact details are copied from each office’s official page and were checked against it on September 28, 2026.

Do you need a building permit in Charles Mix County, South Dakota?

Yes, with a local-program exception. Charles Mix County requires a building permit for residential, agricultural, commercial and industrial structures built or moved into the county, as well as remodeling, additions and other improvements¹². The county ordinance does not apply within a city or organized township that has an established building-permit program, so confirm which office serves the parcel before applying². The county's published procedure tells applicants to complete the building-permit application and a proposed construction site plan when applicable, then return the application with the fee to the Director of Equalization Office³. The office issues the permit after receiving the application and fee³. We could not confirm an adopted construction-code edition, a routine county building-inspection requirement or a certificate-of-occupancy process, so ask the Director of Equalization Office what review applies before work starts³.

Who issues Charles Mix County building permits, and how do you reach the office?

The Charles Mix County Director of Equalization Office receives county building-permit applications and issues the permit after the application and fee arrive³. Call the office at (605) 487-7382 or mail the application to PO Box 68, Lake Andes SD 57356-0068³. The county's forms page also links an online building-permit application³. The published procedure identifies different fee categories for work at an existing building site and establishment of a new building site, but confirm the current amount with the office before submitting because the source document is dated 2015³. Charles Mix County does not identify a separate building department on the cited materials; begin with the Director of Equalization Office unless the parcel is in a city or organized township with its own building-permit program³².

Does Charles Mix County have zoning?

No county zoning ordinance was identified for Charles Mix County; the county's adopted-ordinance page lists its building-permit and drainage ordinances but no enacted zoning ordinance⁴. South Dakota law allows a county board to adopt zoning that regulates building size, yards, density, location and land use, but that enabling authority does not prove Charles Mix County adopted those controls¹⁰. We could not confirm an explicit official statement that all unincorporated land is unzoned. Ask the Director of Equalization Office whether a particular parcel is subject to any county land-use restriction, and separately ask the relevant municipality if the parcel lies inside city limits. Do not use the absence of a confirmed county zoning ordinance as proof that setbacks, minimum home size, subdivision approval, deed restrictions or other parcel-specific limits are absent.

How do septic permits work in Charles Mix County?

South Dakota DANR administers the statewide on-site wastewater requirements that apply in Charles Mix County, while local governments may impose stricter requirements⁵¹¹. A conventional individual system may be designed and installed under the state chapter without submitting project plans for secretary review, but a system receiving human waste that is not conventional requires plans and specifications to be approved before construction⁶. The state or its authorized representative may inspect an on-site system at any time, though the rule does not promise a routine inspection for every installation¹². Only about 8.8% of county soils lack severe limits for a conventional drain field, so make septic feasibility part of the purchase contingency rather than assuming a standard field will work¹³. Contact the DANR Livestock Services Program at (605) 773-4647 for the state review process¹⁴.

Can you live in an RV or tiny home on your land in Charles Mix County?

We could not confirm a Charles Mix County rule that expressly allows or prohibits long-term RV living, temporary camping or tiny-home occupancy. No county zoning ordinance was identified, but that finding does not answer occupancy, sanitation, building-permit or municipal-rule questions for a particular parcel⁴. A tiny home that involves construction should be discussed with the Director of Equalization Office because Charles Mix County requires a building permit¹³. Where water or electricity is unavailable, South Dakota rules call for a vault privy, chemical toilet, incinerator toilet or composting unit; except for vault privies, those unconventional systems are experimental and need approval before installation¹⁵¹⁶. Ask the county and DANR about the intended living arrangement before buying land or moving a unit onsite.

Building a home in Charles Mix County: the steps, in order

Ask the Director of Equalization Office whether the parcel has any land-use, setback or site-plan constraints that affect the proposed home; countywide zoning and dimensional rules could not be confirmed.
Complete the Charles Mix County building-permit application and proposed construction site plan when applicable, then submit the fee to the Director of Equalization Office³.
Resolve wastewater early: conventional individual systems follow the state chapter, while nonconventional systems require plan approval before construction⁶.
Determine whether a water-right permit is needed; when it is required, South Dakota approval must come before well drilling, and a licensed well driller is required⁹.
Arrange state electrical and plumbing approvals. Qualifying owners may perform their own wiring only with an approved homeowner permit, and a final electrical inspection is required before occupancy⁸¹⁷.
Obtain South Dakota Department of Transportation permission before constructing access to a state highway¹⁸.

What should you check before buying land in Charles Mix County?

Start with buildability, wastewater, water, access and flood exposure. Charles Mix County requires a building permit where a city or organized township does not have its own program, while the county's zoning status and parcel-level dimensional controls should be confirmed with the Director of Equalization Office¹⁴³². Septic deserves special attention because only about 8.8% of county soils lack severe limits for a conventional drain field¹³. For a driveway onto a state highway, state permission is required before construction begins¹⁸. Participating South Dakota communities require permits for development in mapped floodplains, but participation and administration differ between incorporated and unincorporated areas, so identify the local floodplain contact for the parcel¹⁹. The county's effective property-tax rate is about 1.1%, and its median annual property-tax bill is about $1,823²⁰²¹. The nearest city of 100,000 or more is about 92 miles from the county's center²².

Watch-outs

Charles Mix County's building-permit requirement does not by itself establish which construction code, inspections or occupancy approval applies; ask the Director of Equalization Office before work begins¹³.
A public sewer can displace an on-site system when the property is within a municipality or sanitary district, sewer is within 400 feet and the provider requests to serve it²³.
South Dakota's owner exemption covers electrical licensure for qualifying owner-occupied work, not the permit or inspection requirement⁸.

Sources

Written September 28, 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.

How Charles Mix County scores

Seclusion86100% ev.

Self-Sufficiency2199% ev.

Admin Boringness66100% ev.

Durability35100% ev.

Property Autonomy67100% ev.

Carry Cost77100% 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 →

$303kTypical home

1.1%Property tax

$3,849Land / acre

25.1"Annual rain

15.3% of yrsSevere drought

17.3 / yr (+13)Mid-century 100°F days

21.9 daysMid-century dry spell

1.5" (+3.8%)Mid-century 1-day rain

1.55×Wildfire change factor

100%Forward climate coverage

$1,745Home insurance / yr

3.1% / yrInsurance growth

1.48%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

71,872People within 2 hr

3,496Radius comparison (15 mi)

8.4People / sq mi

11.2%Federal land

92.9%Land at 15% slope or less

8.8%Septic soil without severe limits

58,248 acWorkable land screen

5.5%Wooded land

15.1 tonsBiomass / forest ac

48.3°FAvg temp

Answers from the rulebook for Charles Mix County

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

Charles Mix County rules

Building permitRequired
The county has adopted a 'Building Permit Ordinance 2015' and maintains a building permit application and permit procedures, indicating building permits are required under this local-option county ordinance.
Charles Mix County - County Ordinances ↗Scouted from the county site, not yet independently re-checked
County-wide zoningAbsent
No zoning ordinance appears among the county's adopted ordinances (only building-permit, drainage, and other ordinances are listed).
Charles Mix County - County Ordinances ↗Scouted from the county site, not yet independently re-checked

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”
South Dakota Electrical Commission - Homeowner Wiring ↗Re-checked Sep 12, 2026
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.”
South Dakota Plumbing Commission - Inspections ↗Re-checked Sep 12, 2026
One more reviewed finding on this topic
- Limited — Electrical wiring installations subject to South Dakota Electrical Commission inspection.
  “A final inspection is required for all jobs prior to occupancy.”
  South Dakota Electrical Commission - Homeowner Wiring ↗Re-checked Sep 12, 2026
Who permits septicState
Individual and small on-site wastewater systems statewide in South Dakota.
- The South Dakota Department of Agriculture and Natural Resources secretary or authorized representative administers the state on-site wastewater requirements.
- The state rules are minimum requirements; local governments may impose more stringent requirements, according to the DANR permitting guide.
“The authority for regulating on-site wastewater systems is found in SDCL Chapter 34A-2.”
On-Site Wastewater Systems in South Dakota ↗Re-checked Sep 12, 2026
Septic permitLimited
On-site wastewater installations in Charles Mix County.
- Plans and specifications for installations receiving human excreta other than a conventional individual on-site wastewater system must be submitted for review and approval before construction.
- A conventional individual on-site wastewater system may be designed and installed under the chapter without submitting project plans and specifications for secretary review and approval.
- A deviation requires secretary approval with plans, specifications, and supporting information prepared by a registered professional engineer or licensed plumber.
“Plans and specifications for all installations which receive human excreta, other than a conventional individual on-site wastewater system, must be submitted to the secretary for review and approval prior to construction. Installation and operation of these systems shall be in accordance with the approved plans and specifications.”
Rule 74:53:01 Individual and Small On-Site Wastewater Systems ↗Re-checked Sep 26, 2026
Septic inspectionLimited
Inspection of on-site wastewater system installation, equipment, and operation in Charles Mix County.
- Inspection authority is discretionary; the rule states inspection may be made at any time rather than requiring a routine inspection for every system.
“Inspection of the installation, equipment, and operation of an on-site wastewater system may be made at any time by the secretary or the secretary's authorized representative.”
Rule 74:53:01 Individual and Small On-Site Wastewater Systems ↗Re-checked Sep 26, 2026
Off-grid sanitationAllowed (with conditions)
Unconventional sanitation systems where water or electrical service is unavailable.
- Vault privies, chemical toilets, incinerator toilets, or composting units shall be used when water or electrical service is unavailable.
- Except for vault privies, unconventional systems are experimental and require plans and specifications submitted to the secretary for approval before installation.
- The systems must meet the chapter's construction, operation, maintenance, and disposal requirements.
“Vault privies, chemical toilets, incinerator toilets, or composting units shall be used when a water or electrical system is not available. With the exception of vault privies, all unconventional systems are considered experimental systems, and plans and specifications shall be submitted to the secretary for approval as an experimental system prior to installation.”
Rule 74:53:01 Individual and Small On-Site Wastewater Systems ↗Re-checked Sep 26, 2026
One more reviewed finding on this topic
- Allowed (with conditions) — Unconventional off-grid sanitation systems where a water or electrical system is unavailable statewide.
  “all unconventional systems are considered experimental systems”
  Administrative Rule 74:53:01 — Individual and Small On-Site Wastewater Systems ↗Re-checked Sep 12, 2026
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.”
South Dakota Water Rights — Drilling a Well ↗Re-checked Sep 12, 2026
Mandatory utility hookupConditional
Use of on-site wastewater systems where public wastewater service may be available.
- On-site wastewater systems may not be constructed, installed, or operated where a public wastewater system is available.
- Availability is defined when the property is within a municipality or sanitary district, a public sewer exists within 400 feet, and the municipality or sanitary district requests to provide service.
public sewer distance: <= 400 feet (the municipality or sanitary district must request to provide service)
“No person may construct, install, or operate an on-site wastewater system where a public wastewater system is available. A public wastewater system is considered available to premises under the following circumstances:”
Rule 74:53:01 Individual and Small On-Site Wastewater Systems ↗Re-checked Sep 26, 2026
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.”
South Dakota Codified Law Chapter 11-10: Building Codes and Standards ↗Re-checked Sep 12, 2026
Driveway accessLimited
New or modified driveways and intersections connecting to South Dakota state highways.
- Permission from the South Dakota Department of Transportation is required for access to a state highway.
- The application may require an access approach design, vicinity map, estimated traffic volumes, three copies of a site plan, traffic-control plan, liability insurance, development plan, drainage plan, traffic-impact study, and revegetation plan.
- Construction cannot begin until the access permit is issued.
- The permittee pays construction, maintenance, and removal costs.
- The permit expires if access is not under construction within one year, subject to one written one-year extension.
- Access construction must be completed within 45 days after initiation within the highway right-of-way.
application review update threshold: 30 days (If the application is not completed within 30 days, a Department employee will contact the applicant with an update.) · construction completion period: 45 days (Measured from initiation of construction within the highway right-of-way.)
“Construction of the access shall not proceed until the access permit is issued. The access shall be completed in an expeditious and safe manner and shall be finished within 45 days from the initiation of construction within the highway right-of-way.”
Instructions: Applying for permission for driveway or intersection on a South Dakota state highway ↗Re-checked Sep 12, 2026
Building in a floodplainRequired
Development in floodplains within South Dakota communities participating in the National Flood Insurance Program, including incorporated and unincorporated areas administered separately by local governments.
- Participating communities must adopt and enforce a flood-damage-prevention ordinance.
- Permits are required for all types of development in the floodplain.
- New or substantially improved homes and manufactured homes must be elevated above the Base Flood Elevation.
- Non-residential buildings must be elevated or flood-proofed.
- Elevation Certificates are required to document compliance.
- NFIP participation and eligibility are established separately for incorporated and unincorporated areas; the source does not establish a single uniform permit process for every South Dakota location.
“Require permits for all types of development in the floodplain.”
National Flood Insurance Program ↗Re-checked Sep 12, 2026
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.”
South Dakota Electrical Wiring Rules Bulletin ↗Re-checked Sep 12, 2026
Permit processPublished (with conditions)
South Dakota state electrical wiring permits and inspections.
- The installer must send the white permit copy to the Commission within 15 calendar days after starting the installation.
- The permit hard copy must be posted at the job site when electrical work starts.
- At least 72 hours' notice is required before inspection.
- A rough-in inspection must occur before wiring is covered, and a final inspection is required before occupancy.
- Homeowner permits are limited to qualifying owner-occupied residences or farmsteads and cannot be used for commercial or rental property.
white permit copy submission deadline: 15 calendar days after starting installation · inspection notice: >= 72 hours
“Within fifteen calendar days after starting an electrical installation, the installer shall send the white copy to the office of the commission.”
South Dakota Electrical Wiring Rules Bulletin ↗Re-checked Sep 12, 2026
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.”
2000 Session Laws Chapter 69 — Planning and zoning statutes revised ↗Re-checked Sep 21, 2026

Still unanswered

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

Building code adopted — Building-code adoption applicable to county-regulated construction.
Certificate of occupancy — Certificates of occupancy for county-regulated buildings.
Local zoning — Local zoning across Charles Mix County municipalities and unincorporated areas.
Zoning districts — Published zoning districts for Charles Mix County.
Minimum dwelling size — Minimum dwelling size requirements in Charles Mix County.

11 more unanswered

Minimum lot size
Setbacks
Lot coverage
Building height
Living in an RV
Camping on your land
Tiny homes
Manufactured homes
Accessory dwellings
Subdividing land
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.

Living off-grid in Charles Mix County, South Dakota

Is Charles Mix County a good place to live off-grid or homestead?

Charles Mix County scores 50/100 on the Bolthole Index, a solid county profile. Its strengths: deep seclusion — about 3,496 people within 15 miles and manageable long-term carry cost. Watch-outs: workable self-sufficiency basics (25.1″/yr rainfall) and elevated current hazard exposure.

Do you need a building permit in Charles Mix County, South Dakota?

Charles Mix County generally requires a residential building permit, 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 Charles Mix County, South Dakota?

Land in Charles Mix County runs about $3,849 per acre, based on the latest county data.

What is the water situation in Charles Mix County?

Charles Mix County gets about 25.1" of rain a year, with severe drought in roughly 15.3% of years.

How remote is Charles Mix County?

A typical private-land location has about 3,496 people within 15 miles and 314,139 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

Building permits, zoning and land rules in Charles Mix County, South Dakota

At a glance

Who to call

Do you need a building permit in Charles Mix County, South Dakota?

Who issues Charles Mix County building permits, and how do you reach the office?

Does Charles Mix County have zoning?

How do septic permits work in Charles Mix County?

Can you live in an RV or tiny home on your land in Charles Mix County?

Building a home in Charles Mix County: the steps, in order

What should you check before buying land in Charles Mix County?

Watch-outs

Sources

Charles Mix County in South Dakota

How Charles Mix County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Charles Mix County

Charles Mix County rules

South Dakota rules that apply here

Still unanswered

Living off-grid in Charles Mix County, South Dakota

Is Charles Mix County a good place to live off-grid or homestead?

Do you need a building permit in Charles Mix County, South Dakota?

How much does land cost in Charles Mix County, South Dakota?

What is the water situation in Charles Mix County?

How remote is Charles Mix County?

How Charles Mix compares in South Dakota