Basement Waterproofing in Des Moines, IA
Water along a basement wall in Des Moines, IA, the state capital in Polk County, Iowa? A short request from this page goes to one independent local contractor, who gets in touch. Basement Waterproofing Des Moines IA is a free referral and advertising service, not a contractor.
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Basement Estimate Request
Takes about 30 seconds. One local contractor gets it and contacts you.
Your details go to one independent contractor who works around Des Moines, IA, and that contractor gets in touch with you directly. See our Referral Marketing Disclosure.
Wet Basement in Des Moines? Start With the Facts
This site does no basement work, and no one, here or anywhere, can promise a basement that never takes on water again. You will find sourced notes on why local basements get wet and which office handles what, and a form that sends a request to be contacted to one independent contractor, which may pay a flat advertising fee (waived for now as a trial). Asking costs you nothing and earns you nothing.
Three Steps to a Written Estimate
- You fill in the form. Write a few lines in the form: the address, where the water shows and when.
- One contractor receives it. A single independent contractor gets your request, contacts you and, if a visit makes sense, sets it up with you itself.
- The contractor writes its estimate. After seeing the basement, it puts its own estimate in writing. From there, everything is between you and the contractor.
Pick the Problem, Find the Fix
When Damp Becomes a Problem
- A wet seam at the floor. A dark line where wall meets slab after rain usually means wet soil is pressing in.
- White crust on walls. Chalky deposits stay behind as moisture moves through block or concrete and dries.
- A crack that weeps. A sideways crack, or a wall bowing in, is worth having looked at soon.
- Water from a floor drain. That is the sewer side, not the walls, and goes to the city that owns the sewer.
Check the Likely Cause in a Minute
The wet basement checker asks five short questions and suggests a likely cause. It is not a diagnosis.
Wet Seasons in Central Iowa
The Iowa Geological Survey dates the last glacier's southern stop, right where Des Moines grew, to about 14,000 years ago; the ice left a pebbly, clay-heavy till. Clarion and similar soils in that till can hold a saturated layer four to six feet down from March through June (USDA NRCS), level with many basement walls. Summer storms add more, and freeze-thaw works at older brick, block and poured walls.
Two flash-flood rounds hit within three weeks in July 2026: the National Weather Service's Des Moines office logged 5 to 10 inches in much of northern Polk County, then 4 to 6 around the metro. On June 30 and July 1, 2018, USGS measured 7.54 inches in 24 hours at Des Moines; the City's after-action report counted about 1,825 properties damaged by stormwater backups or flooding. The river floods of 1993 and 2008 were different: Saylorville Lake, a federal reservoir, controls the river, not groundwater.
Des Moines Public Works keeps up about 942 miles of sanitary sewer; report a backup at (515) 283-4950, the City's listed 24/7 customer service line, or in the myDSMmobile app, and dial 911 in an emergency. Some older areas were built with combined storm-and-waste pipes, separated under a 2010 consent decree with the Iowa DNR; a May 2025 City release said the final combined sewer overflow had been ended. The five nearby cities handle their own sewers.
Price Ranges, With Sources
These Fixr 2026 figures are national. Wall type, access, how much of the basement is involved and any plumbing shift a real price, which comes from a contractor's written estimate.
| Cost row | Figure | Source (year) |
|---|---|---|
| Typical basement waterproofing project | about $3,000 to $10,000 (average about $5,000) | Fixr national (2026) |
| Interior perimeter drain, per linear foot | $40 to $120 | Fixr national (2026) |
| Sump pump installation | $600 to $2,500 | Fixr national (2026) |
| Epoxy crack injection, per crack | $250 to $1,000 | Fixr national (2026) |
| Waterproof paint or sealant, per sq ft | $1 to $8 | Fixr national (2026) |
The cost guide explains each row.
What Makes This Different
- Describe it once. One form, one contractor, one explanation of the water.
- Look up the registration. No Iowa license exists for waterproofing. Firms making $2,000 a year or more in construction file a registration with DIAL: search its Contractor Registration Public Portal or dial 515-242-5871.
- Pipes mean a plumber. A backwater valve, a sump tied into a drain or sewer-line work is plumbing in Iowa: a state-licensed plumber and a plumbing permit.
- Paper before payment. Get an itemized written contract, pay as work progresses, and know that a home-signed deal of $25 or more may be cancellable until midnight of the third business day.
Areas Covered Near Des Moines
Requests from the City of Des Moines and five nearby cities reach one independent contractor: Windsor Heights, IA, about 5 miles west-northwest; Pleasant Hill, IA, about 6 miles east; Norwalk, IA, about 7 miles south-southwest; Bondurant, IA, about 11 miles northeast; and Polk City, IA, about 14 miles north-northwest. Each is a separate city with its own permits and sewers.
Des Moines Homes and Their Basements
Among homes with basements, age tells much of the story. About one Des Moines home in four (26.7%) dates from 1939 or earlier, about half from before 1960 (Census survey data), and about 61% are owner-occupied. The city grew where the Des Moines and Raccoon rivers meet, and the streets around historic City Hall (1909–10) were raised 3 to 4 feet against floods.
Windsor Heights, IA has many 1950s basements; Polk City, Bondurant, Pleasant Hill and Norwalk, IA are mostly post-1990. Older homes more often have full basements, but newer ones still get wet when drain tile clogs, a sump fails or backfill settles.
Questions Homeowners Ask
Does this site send someone to look at the basement?
No. The site never visits, inspects, measures or prices a basement. Any visit, estimate or agreement is between you and the one independent contractor that receives your request.
Will the work need a permit?
In Des Moines, a state-licensed plumber takes out the plumbing permit for any sewer-line or plumbing work, and structural repairs to a foundation may call for a building permit; for drain-and-sump work, the contractor asks the Permit and Development Center (515-283-4200). Each nearby city decides for itself.
Does homeowners insurance cover basement water?
Policies vary. The Iowa Insurance Division says flood damage is commonly excluded and that backup protection for water or sewage doesn't come built into a standard homeowners policy; slow seepage is frequently excluded as well. Your insurer or agent can explain your own policy.
Get Your Basement Question Answered
The short form is the place to start. The contractor answers questions about your own basement once it gets in touch; this site can't assess any home. The decisions stay yours.