Looking for a mold remediation or removal company in South Dakota? You're in the right place. Below you'll find our directory of independent mold remediation companies serving communities across the state, organized by city so you can quickly reach a provider near you. First, this short overview explains why mold is a common problem in South Dakota homes, how the trade is (and isn't) regulated here, the certifications that matter, and how to choose a contractor with confidence.
Our South Dakota directory is organized by city, so you can go straight to remediation companies that serve your community.
Not sure where to begin? Many homeowners start with an independent mold inspection to confirm whether there's a problem and how far it extends before hiring anyone to remove it.
We publish this guide purely as a courtesy to South Dakota homeowners and renters. Mold Inspection & Testing (MI&T) is an inspection-and-testing-only company: we do not perform remediation, and we do not sell mold removal. The companies in the directory above are independent contractors and are not affiliated with us. Our role is to help you understand the problem and make an informed choice.
South Dakota's climate creates a real east-to-west moisture divide, and that divide shapes where indoor mold shows up. According to the NOAA State Climate Summary, annual precipitation ranges from roughly 16 inches in the semiarid northwest to about 28 inches in the more humid southeast. Statewide totals have swung from as little as 10.9 inches in 1936 to a record 31.4 inches in 2019. The wetter, muggier eastern counties, around Sioux Falls, Brookings and Watertown, see the humid-summer conditions that let mold thrive, while the drier west and the Black Hills face their own moisture spikes from intense storms and rapid snowmelt.
Flooding is the state's signature moisture hazard. The Missouri River produced major flooding in 2011, when parts of Pierre had to be evacuated, and again in 2019. That same 2019 spring flood kept the James River at Columbia above flood stage for a remarkable 518 days. Sudden downpours are becoming more frequent, too: the state now averages about 22 percent more 2-inch rain events than in past decades, and Groton holds the daily rainfall record at 8.74 inches. When water like that reaches a foundation, basements and crawl spaces are usually the first casualties.
South Dakota's housing stock adds to the risk. Cold winters mean tightly sealed homes and heavy reliance on basements for living and storage, exactly the low, poorly ventilated spaces where snowmelt seepage, sump-pump failures and spring groundwater collect. A basement that stays even slightly damp through a humid eastern summer, or a crawl space that wicks moisture after the melt, gives mold everything it needs. In every case the fix starts with the water source, not just the visible growth.
Here's the key point for South Dakota consumers: the state does not license or register mold remediation contractors or mold assessors. There is no state mold license to ask for, because none exists. South Dakota also does not issue a statewide general contractor license, so a business can legally offer mold removal without any state-issued trade credential specific to this work. The South Dakota Department of Health provides educational information about mold and indoor air quality, but it has no authority to license or certify the people who do the cleanup.
That doesn't mean anything goes, and it doesn't mean you're without recourse. It simply shifts the burden of vetting onto you. Because there's no license to confirm, the things you can verify carry more weight: voluntary industry certification, current liability insurance, verifiable references, and adherence to recognized national standards. The rest of this guide focuses on exactly those screening steps so a missing state license never becomes a missing safeguard.
South Dakota recognizes a landlord's duty to provide habitable housing. Under South Dakota Codified Laws (SDCL) 43-32-8, a landlord must put and keep a rented dwelling in a condition fit for occupation and repair problems that make it unfit, unless the tenant caused them. The statute does not single out mold by name, so whether a given mold problem rises to a habitability issue depends on the facts of the case.
If a landlord fails to make a required repair within a reasonable time after receiving notice, SDCL 43-32-9 gives the tenant remedies: the tenant may arrange the repair and deduct the cost from rent, up to one month's rent, or may vacate the premises and be released from further rent obligations. South Dakota does not impose a mold-specific disclosure requirement on landlords or sellers, though it does require disclosure when a property was used to manufacture methamphetamine. Because reasonableness and the extent of a problem often become disputed, tenants and landlords alike benefit from documenting conditions carefully, and an independent mold inspection can provide an objective record of what was found and where.
Even without a state license, real professional standards exist, and a good contractor works to them. The core reference is the ANSI/IICRC S520 Standard for Professional Mold Remediation, which defines containment, worker protection, removal and cleaning practices. Reputable firms also follow U.S. EPA mold guidance for assessment and cleanup, and they send any samples to an AIHA-accredited laboratory so results come from an independently vetted lab rather than an in-house guess. Ask a prospective contractor directly which standards they follow; a confident, specific answer is a good sign.
Since South Dakota issues no mold license, voluntary certification is your best proxy for training. Ask whether the technicians hold current credentials through the IICRC (for example, Applied Microbial Remediation Technician) or NORMI, and ask to see the certificates. Certification isn't a guarantee, but it shows the company has invested in recognized instruction.
Avoid letting one company both diagnose the problem and profit from the cleanup. An independent inspection gives you an unbiased scope up front and objective verification afterward. If you're looking for an independent mold inspection company in South Dakota, visit https://moldinspectionandtest.com/south-dakota.
Get the plan in writing before work starts. In South Dakota, so many mold problems trace back to basement seepage, sump-pump failure or spring snowmelt that a scope which only addresses visible surface mold and ignores the water source is a red flag. A proper scope names the moisture source to be corrected, the containment and removal methods, the materials to be removed, and how success will be verified.
Ask for a certificate of general liability insurance, and confirm it's current. Request references from recent local jobs, ideally ones similar to yours, and actually call them. In a state with no licensing board to field complaints, references and a clean insurance record do a lot of the vetting work.
Because South Dakota sets no standard rates, prices and proposed methods can vary widely for the same problem. Collect at least two or three written estimates, compare not just the price but what each one includes, and be wary of any bid that skips the underlying moisture repair.
Start with our directory above, which is organized by South Dakota city so you can jump straight to remediation companies serving your area, from Sioux Falls and Rapid City to Aberdeen, Brookings, Watertown, Pierre and smaller towns. Because we perform inspection and testing only, the companies listed are independent contractors, not our own crews. Many homeowners begin with an independent inspection to confirm the problem and its scope, then hire a remediator to do the work.
No. South Dakota does not license or register mold remediation contractors or mold assessors, and the state does not require a general contractor license either. The South Dakota Department of Health offers educational information but has no authority to license mold professionals. Because there is no state license to verify, screen instead for voluntary certification, insurance and references.
South Dakota law (SDCL 43-32-8) requires a landlord to put and keep a rented dwelling in a condition fit for occupation and to repair problems that make it uninhabitable, though the statute does not name mold specifically. Under SDCL 43-32-9, if a landlord fails to make a required repair within a reasonable time after notice, a tenant may repair the condition and deduct the cost, up to one month's rent, or may vacate. Documenting the issue with an independent inspection can help establish the facts.
Cost depends on how much material is affected, where the mold is, and whether hidden moisture from a leak, a flooded basement or snowmelt must be corrected first. A small, contained area is far less involved than widespread growth after Missouri River or spring flooding. Because South Dakota sets no fees or standard rates, get more than one written estimate and make sure each one addresses the underlying moisture source, not just visible mold.
We recommend keeping the two roles independent. When one company both diagnoses the problem and bids the cleanup, it has a financial interest in the findings. Using an independent inspector for testing and a written clearance, then hiring a separate remediation contractor to perform the work, gives you an unbiased benchmark and objective post-work verification.
Look for work performed to the ANSI/IICRC S520 Standard for Professional Mold Remediation, consistent with U.S. EPA mold guidance, and any laboratory analysis handled by an AIHA-accredited lab. Technicians certified through IICRC or NORMI signal recognized training even though South Dakota does not require it.
This page is a general educational resource and reflects South Dakota law as of August 2026. It is not legal advice. Laws and regulations change, and their application depends on your specific circumstances. For current requirements and guidance, consult the relevant South Dakota state or local agency and a qualified attorney.
