Iowa Basement Waterproofing Rules for Des Moines, IA Homeowners
If your house is in Des Moines, Iowa, a wet-basement project touches state contractor registration, plumbing law, a cancel window for deals made at home, a City sewer program and local permits. Each point names an office that can confirm it.
In Brief
This is a summary of public law, not legal advice.
- No waterproofing license. Iowa issues none; contractors register with the state instead.
- Sewer pipes mean plumbing. Backwater valves, sewer lines and sump hookups to drains need a state-licensed plumber.
- A short window to back out. A deal made at your kitchen table may be cancelable until midnight of the third business day.
What to Check Before Hiring
Iowa doesn't license waterproofing at the state level, and no City of Des Moines or town license turned up. Instead, Iowa Code chapter 91C (contractor registration), together with DIAL's rule at 481 IAC chapter 465, requires businesses earning $2,000 or more a year from construction to register with the Department of Inspections, Appeals, and Licensing (DIAL). Someone working only on their own home falls outside it, and a contractor from another state must also post a bond to register.
Under the rule, construction means "new work, additions, alterations, reconstruction, installations, repairs and demolitions," which fits drain tile, crack injection, wall bracing and sumps. Check a registration yourself on DIAL's Contractor Registration Public Portal or at 515-242-5871; it shows paperwork reached the state, not the quality of anyone's work.
Plumbing falls under Iowa Code chapter 105 (plumbing licensing), which treats drainage pipes, building drains, building sewers, storm sewers and storm drains within the property lines as plumbing (§ 105.2), bars unlicensed work on it (§ 105.10) and makes the license a state one, voiding local plumbing licenses from July 1, 2009 (§ 105.17); cities still issue permits. Plumbing contractors also register with DIAL; the Plumbing and Mechanical Systems Board's license search or 866-280-1521 confirms a plumber. Ask, too, for insurance certificates, recent local customers and a visitable address.
Basement Waterproofing Des Moines IA is a referral and advertising service, not a contractor, plumber or other trade, with no Iowa contractor registration or plumbing license. It doesn't offer, bid on, quote or inspect work, never comes to a house and keeps contractors unnamed. A request to be contacted goes to one independent contractor, which may pay a flat advertising fee (currently a free trial); you pay and receive nothing.
What the Contract Should Say
No Iowa law found here demands a written contract for basement work, but ask for one, signed by both sides, with your copy.
- The job and materials. Walls, feet of drain, the pump, its discharge point and each material.
- Price and payment stages. The total, paid as the work moves along, never all up front.
- Permits and who pulls them. Listed before you sign, pulled by the contractor, inspected before the last payment.
- The warranty in writing. Its coverage, its length and whether a future buyer inherits it.
Put changes in writing, and ask for lien waivers before the final payment.
Cancel Rights in Iowa
Generally, Iowa's door-to-door sales law (Iowa Code chapter 555A) lets a buyer cancel a purchase of $25 or more made somewhere other than the seller's place of business, up to midnight of the third business day afterward. The seller must give written notice of that right (§ 555A.3), and the Attorney General's contractor guide gives the same advice for contracts signed away from a contractor's office.
Whether it reaches a job you asked about online is unsettled, so it is a right you may have. The contract should explain how to cancel; cancel in writing and keep a copy.
Iowa's Consumer Fraud Act (Iowa Code § 714.16) bars deception and misrepresentation in selling or advertising services, even if no one was misled, this website included. It also voids "referral" selling, where a buyer's price hinges on recruiting other customers, so this site gives homeowners nothing of value.
Iowa Code § 103A.71 (residential contractors after a catastrophe) restricts the insurance promises and actions of contractors doing exterior repairs after a disaster, floods included; this site promises nothing about insurance and handles no insurance matters, so ask your insurer or agent. To complain about a contractor, contact the Iowa Attorney General's Consumer Protection Division, 888-777-4590.
Programs Before You Pay
The program below is the City of Des Moines' own. Only Des Moines addresses and work by a plumber qualify, the City must pre-approve it before anything starts, and this site has no part in it.
Under the Private Property Protection Program, the City reimburses 100% of the cost, up to $1,500, for installing a new backwater valve; installing or redirecting a sump pump so water from foundation and area drains goes to an outlet off the sanitary system, like a rain garden, a storm sewer or the ground surface; or disconnecting roof leaders from the sanitary sewer service. The owner applies first, attaching an itemized estimate, and holds off until the City sends a pre-approval letter; a licensed plumber then does the work with a plumbing permit.
After the job, the owner hands in the invoice, proof of payment, a W-9 and the permit number; work must be done by June 30, 2028. Check with the City before planning around it. Waterproofing, drain tile, crack repair and a sump added for seepage alone fall outside it. Questions: the Clean Water Program Office, (515) 323-8165.
Des Moines Public Works runs about 942 miles of sanitary sewer; report a backup at a City address to (515) 283-4950 or the myDSMmobile app, and dial 911 in an emergency. Some older sewers were built combined, storm runoff and sewage in one pipe; the City has been separating them since 2010 under a consent decree with the state's Department of Natural Resources, announcing in May 2025 that the last combined sewer overflow was gone. Your house line is the private sewer service; ask Public Works which part is yours.
Saylorville Lake, a federal reservoir upstream, controls river floods like those of July 1993 and June 2008, not groundwater or backups. Norwalk, IA ran a Foundation Drain Removal Program after the spring 2008 floods; none turned up for Windsor Heights, IA, Polk City, IA, Bondurant, IA or Pleasant Hill, IA.
Before paying anyone: report a backup to the right office, read your policy and ask your insurer or agent (the Iowa Insurance Division says backup coverage isn't automatic), wait for the City's letter, and get a written contract.
Local Rules That Apply
In Des Moines, permits come from the Permit and Development Center, 515-283-4200, whose "Show Me My House" lookup tells you if an address falls inside the City. Plumbing and sewer-line work take a plumbing permit pulled by a state-licensed plumber; structural repair may need a building permit, and for a drain-and-sump job the contractor asks the Center. A grading permit may apply to grading or excavating at least 500 square feet in a flood plain.
- Windsor Heights, IA. Permit desk 515-645-6826; Safe Building handles permits and inspections under contract (515-333-4161). For sewer-line replacement, "The plumbing (trade) permit is always required."
- Polk City, IA. City Hall, 515-984-6233, handles building permits; plumbing, mechanical and electrical work each need a trade permit.
- Bondurant, IA. City Hall, (515) 967-2418, lists "basement finishes" among its building permits; plumbing takes a trade permit.
- Pleasant Hill, IA. The Building Department, 515-309-9461, issues building and plumbing permits.
- Norwalk, IA. The Building Department, (515) 981-9530, lists plumbing permits and requires an egress-window permit when a window's size changes.
Legal Questions, Plainly
Does the City of Des Moines program pay for waterproofing?
No. It covers backwater valves, sump pumps installed or redirected off the sanitary sewer, and roof-leader disconnections at Des Moines addresses, done by a licensed plumber with a permit after pre-approval. Drain tile, crack repair and wall sealing fall outside it; ask the Clean Water Program Office about eligibility.
Does a DIAL registration mean a contractor does good work?
No. Registration shows the business filed with the state as one earning $2,000 or more a year from construction; it says nothing about how well the work holds up. Treat it as a first check, then weigh insurance certificates, recent local customers and a written, itemized contract.
Where to Check
Sources read 2026-10-12. The state-law items come from the Des Moines research of 2026-10-05, and 481 IAC 465, § 714.16 and chapter 105 were checked again 2026-10-12.
- Iowa law (legis.iowa.gov). Iowa Code § 91C.1, chapter 105 (§§ 105.2, 105.10, 105.17), § 714.16, § 103A.71 and chapter 555A (§§ 555A.1–.3); 481 IAC chapter 465.
- State offices. DIAL's registration Q&A and plumbing contractor license page; the contractor guide from the Attorney General; the Insurance Division's flood article of February 5, 2025.
- City of Des Moines. Report a Problem, Sewer Management, Sanitary Sewers and Private Property Protection Program pages; Ordinance 16,442; Council Communications 10-343, 16-513, 21-090, 23-276; the May 14, 2025 release; Permit and Development Center pages; the 2018 After Action Flash Flood Report.
- Ground, weather and towns. Iowa Geological Survey, NRCS, NWS Des Moines and USGS pages; windsorheights.org, polkcityia.gov, cityofbondurant.com, pleasanthilliowa.org, norwalk.iowa.gov, dmmwra.org.
Start With One Request
Rules tell you what to ask; a written estimate says what the basement needs. Send the short request form and one independent contractor near Des Moines will get in touch and put its own scope and price in writing. Rough figures first? Both the four-step calculator and the five-question checker can help.