Des Moines, IA
Basement waterproofing and foundation repair costs in Des Moines
Local cost ranges and contractors for every job that keeps water out ofa Des Moines home, with the soil, water-table, freeze-thaw, and permit data specific to Des Moines, IA, not a national average.
What each job costs in Des Moines, IA
Modeled ranges for the five most common basement and foundation jobs in Des Moines. Pick a job below for its permit notes, guides, and free quotes.
| Service in Des Moines | Low | Average | High |
|---|---|---|---|
| Basement Waterproofing | $2,200 | $4,600 | $7,000 |
| Foundation Repair | $2,100 | $4,950 | $7,750 |
| Crawl Space Encapsulation | $2,900 | $5,300 | $7,700 |
| French Drain Installation | $1,450 | $3,600 | $5,750 |
| Sump Pump Installation | $600 | $1,350 | $2,100 |
These ranges are estimates modeled from regional Iowa pricing, not quotes from local projects. What you pay depends on square footage, access, and how severe the problem is, so treat this as a starting point and compare real quotes.
Costs & FAQ by service in Des Moines
Basement Waterproofing in Des Moines
Average basement waterproofing · avg $4,600
Interior and exterior systems that stop water seepage through foundation walls and floors.
How much does basement waterproofing cost in Des Moines?+
In Des Moines, basement waterproofing typically runs $2,200–$7,000, averaging about $4,600. That range is an estimate modeled from regional Iowa pricing rather than local project data, and the size of the job, access to the foundation, and how far the damage has progressed matter more than any regional average.
Do I need a permit for basement waterproofing in Des Moines?+
Because Des Moines does not publish a foundation-repair or waterproofing fee line in the accessible code, homeowners should confirm the applicable fee through the Permit and Development Division before structural foundation repair, exterior excavation, sump/drainage, or waterproofing work starts. Separate building, electrical, mechanical, plumbing, zoning, engineering, erosion-control, or plan-review fees may apply depending on scope. Permits are issued by Development Services Department, Permit and Development Division. Des Moines requires a permit before any work for which a permit is required under Chapter 26, and the property owner is responsible for ensuring permits are obtained, inspected, and approved. Permit fees are set in the schedule of fees adopted by City Council resolution rather than printed as a simple table in the code. The valuation used to compute permit and plan-check fees must include the total value of all construction work plus finish work, painting, roofing, electrical, plumbing, heating, air conditioning, elevators, fire-extinguishing systems, and other permanent work or equipment, and it may not be less than the current ICC Building Valuation Data. Work started before a required permit is obtained may trigger doubled regular total fees.
Is basement waterproofing worth it in Des Moines?+
With 36.8" of annual rainfall and about 79 freeze-thaw cycles a year, untreated water intrusion in Des Moines tends to worsen each season, so most homeowners find addressing it early is far cheaper than structural repair later.
- Typical timeline
- 1–3 days
- Water table rises to
- ~1.6 ft · above basement floor
- Permit
- Usually required
- Local soil
- Nodaway (slow-draining)
- Slow-draining ground
- 8 / 12 sampled points
- Freeze-thaw cycles
- 79 / yr
- Local pros
- 12 available
Foundation Repair in Des Moines
Average foundation repair · avg $4,950
Fixing cracks, bowing walls, and settlement with piers, anchors, and structural reinforcement.
How much does foundation repair cost in Des Moines?+
In Des Moines, foundation repair typically runs $2,100–$7,750, averaging about $4,950. That range is an estimate modeled from regional Iowa pricing rather than local project data, and the size of the job, access to the foundation, and how far the damage has progressed matter more than any regional average.
Do I need a permit for foundation repair in Des Moines?+
Because Des Moines does not publish a foundation-repair or waterproofing fee line in the accessible code, homeowners should confirm the applicable fee through the Permit and Development Division before structural foundation repair, exterior excavation, sump/drainage, or waterproofing work starts. Separate building, electrical, mechanical, plumbing, zoning, engineering, erosion-control, or plan-review fees may apply depending on scope. Permits are issued by Development Services Department, Permit and Development Division. Des Moines requires a permit before any work for which a permit is required under Chapter 26, and the property owner is responsible for ensuring permits are obtained, inspected, and approved. Permit fees are set in the schedule of fees adopted by City Council resolution rather than printed as a simple table in the code. The valuation used to compute permit and plan-check fees must include the total value of all construction work plus finish work, painting, roofing, electrical, plumbing, heating, air conditioning, elevators, fire-extinguishing systems, and other permanent work or equipment, and it may not be less than the current ICC Building Valuation Data. Work started before a required permit is obtained may trigger doubled regular total fees.
Is foundation repair worth it in Des Moines?+
With 36.8" of annual rainfall and about 79 freeze-thaw cycles a year, untreated water intrusion in Des Moines tends to worsen each season, so most homeowners find addressing it early is far cheaper than structural repair later.
- Typical timeline
- 2–5 days
- Water table rises to
- ~1.6 ft · above basement floor
- Permit
- Usually required
- Local soil
- Nodaway (slow-draining)
- Slow-draining ground
- 8 / 12 sampled points
- Freeze-thaw cycles
- 79 / yr
- Local pros
- 12 available
Crawl Space Encapsulation in Des Moines
Average crawl space encapsulation · avg $5,300
Sealing and vapor-barriering a crawl space to control moisture, mold, and wood rot.
How much does crawl space encapsulation cost in Des Moines?+
In Des Moines, crawl space encapsulation typically runs $2,900–$7,700, averaging about $5,300. That range is an estimate modeled from regional Iowa pricing rather than local project data, and the size of the job, access to the foundation, and how far the damage has progressed matter more than any regional average.
Do I need a permit for crawl space encapsulation in Des Moines?+
Because Des Moines does not publish a foundation-repair or waterproofing fee line in the accessible code, homeowners should confirm the applicable fee through the Permit and Development Division before structural foundation repair, exterior excavation, sump/drainage, or waterproofing work starts. Separate building, electrical, mechanical, plumbing, zoning, engineering, erosion-control, or plan-review fees may apply depending on scope. Permits are issued by Development Services Department, Permit and Development Division. Des Moines requires a permit before any work for which a permit is required under Chapter 26, and the property owner is responsible for ensuring permits are obtained, inspected, and approved. Permit fees are set in the schedule of fees adopted by City Council resolution rather than printed as a simple table in the code. The valuation used to compute permit and plan-check fees must include the total value of all construction work plus finish work, painting, roofing, electrical, plumbing, heating, air conditioning, elevators, fire-extinguishing systems, and other permanent work or equipment, and it may not be less than the current ICC Building Valuation Data. Work started before a required permit is obtained may trigger doubled regular total fees.
Is crawl space encapsulation worth it in Des Moines?+
With 36.8" of annual rainfall and about 79 freeze-thaw cycles a year, untreated water intrusion in Des Moines tends to worsen each season, so most homeowners find addressing it early is far cheaper than structural repair later.
- Typical timeline
- 1–2 days
- Water table rises to
- ~1.6 ft · above basement floor
- Permit
- Usually required
- Local soil
- Nodaway (slow-draining)
- Slow-draining ground
- 8 / 12 sampled points
- Freeze-thaw cycles
- 79 / yr
- Local pros
- 12 available
French Drain Installation in Des Moines
Average french drain installation · avg $3,600
Perimeter drainage that channels groundwater away from the foundation before it gets in.
How much does french drain installation cost in Des Moines?+
In Des Moines, french drain installation typically runs $1,450–$5,750, averaging about $3,600. That range is an estimate modeled from regional Iowa pricing rather than local project data, and the size of the job, access to the foundation, and how far the damage has progressed matter more than any regional average.
Do I need a permit for french drain installation in Des Moines?+
Because Des Moines does not publish a foundation-repair or waterproofing fee line in the accessible code, homeowners should confirm the applicable fee through the Permit and Development Division before structural foundation repair, exterior excavation, sump/drainage, or waterproofing work starts. Separate building, electrical, mechanical, plumbing, zoning, engineering, erosion-control, or plan-review fees may apply depending on scope. Permits are issued by Development Services Department, Permit and Development Division. Des Moines requires a permit before any work for which a permit is required under Chapter 26, and the property owner is responsible for ensuring permits are obtained, inspected, and approved. Permit fees are set in the schedule of fees adopted by City Council resolution rather than printed as a simple table in the code. The valuation used to compute permit and plan-check fees must include the total value of all construction work plus finish work, painting, roofing, electrical, plumbing, heating, air conditioning, elevators, fire-extinguishing systems, and other permanent work or equipment, and it may not be less than the current ICC Building Valuation Data. Work started before a required permit is obtained may trigger doubled regular total fees.
Is french drain installation worth it in Des Moines?+
With 36.8" of annual rainfall and about 79 freeze-thaw cycles a year, untreated water intrusion in Des Moines tends to worsen each season, so most homeowners find addressing it early is far cheaper than structural repair later.
- Typical timeline
- 1–2 days
- Water table rises to
- ~1.6 ft · above basement floor
- Permit
- Usually required
- Local soil
- Nodaway (slow-draining)
- Slow-draining ground
- 8 / 12 sampled points
- Freeze-thaw cycles
- 79 / yr
- Local pros
- 9 available
Sump Pump Installation in Des Moines
Average sump pump installation · avg $1,350
Pump systems that evacuate collected water from a basement or crawl space pit.
How much does sump pump installation cost in Des Moines?+
In Des Moines, sump pump installation typically runs $600–$2,100, averaging about $1,350. That range is an estimate modeled from regional Iowa pricing rather than local project data, and the size of the job, access to the foundation, and how far the damage has progressed matter more than any regional average.
Do I need a permit for sump pump installation in Des Moines?+
Because Des Moines does not publish a foundation-repair or waterproofing fee line in the accessible code, homeowners should confirm the applicable fee through the Permit and Development Division before structural foundation repair, exterior excavation, sump/drainage, or waterproofing work starts. Separate building, electrical, mechanical, plumbing, zoning, engineering, erosion-control, or plan-review fees may apply depending on scope. Permits are issued by Development Services Department, Permit and Development Division. Des Moines requires a permit before any work for which a permit is required under Chapter 26, and the property owner is responsible for ensuring permits are obtained, inspected, and approved. Permit fees are set in the schedule of fees adopted by City Council resolution rather than printed as a simple table in the code. The valuation used to compute permit and plan-check fees must include the total value of all construction work plus finish work, painting, roofing, electrical, plumbing, heating, air conditioning, elevators, fire-extinguishing systems, and other permanent work or equipment, and it may not be less than the current ICC Building Valuation Data. Work started before a required permit is obtained may trigger doubled regular total fees.
Is sump pump installation worth it in Des Moines?+
With 36.8" of annual rainfall and about 79 freeze-thaw cycles a year, untreated water intrusion in Des Moines tends to worsen each season, so most homeowners find addressing it early is far cheaper than structural repair later.
- Typical timeline
- Under 1 day
- Water table rises to
- ~1.6 ft · above basement floor
- Permit
- Usually required
- Local soil
- Nodaway (slow-draining)
- Slow-draining ground
- 8 / 12 sampled points
- Freeze-thaw cycles
- 79 / yr
- Local pros
- 12 available
What affects the cost in Des Moines
Climate: ERA5 reanalysis via Open-Meteo
USDA soil maps put Nodaway soils across much of Des Moines, and 8 of the 12 rated sample points fall in hydrologic groups that shed water slowly. Ground like that pushes rain and snowmelt sideways against foundation walls instead of letting it soak away, and roughly 79 freeze-thaw cycles a year work at any crack that lets it in. Soil varies sharply across Des Moines, so treat this as the pattern across 17 sampled points rather than a description of your lot.
Soil: USDA NRCS SSURGO · Nodaway, occasionally flooded-Urban land complex, 0 to 2 percent slopes · 17 points sampled
Permits in Des Moines
Because Des Moines does not publish a foundation-repair or waterproofing fee line in the accessible code, homeowners should confirm the applicable fee through the Permit and Development Division before structural foundation repair, exterior excavation, sump/drainage, or waterproofing work starts. Separate building, electrical, mechanical, plumbing, zoning, engineering, erosion-control, or plan-review fees may apply depending on scope.
Des Moines requires a permit before any work for which a permit is required under Chapter 26, and the property owner is responsible for ensuring permits are obtained, inspected, and approved. Permit fees are set in the schedule of fees adopted by City Council resolution rather than printed as a simple table in the code. The valuation used to compute permit and plan-check fees must include the total value of all construction work plus finish work, painting, roofing, electrical, plumbing, heating, air conditioning, elevators, fire-extinguishing systems, and other permanent work or equipment, and it may not be less than the current ICC Building Valuation Data. Work started before a required permit is obtained may trigger doubled regular total fees.
Issuing authority: Development Services Department, Permit and Development Division · Official fee schedule · Verified 2026-07-16
See how Des Moines compares: permit fees in 118 US cities →
23% of basement flood claims in Polk County were filed outside the flood zone →
What puts water in a Des Moines basement
The ground under Des Moines holds water close to the surface: in a typical year the seasonal-high water table modeled from USDA soil survey rises to within about 1.6 ft of grade, shallower than the roughly 7 ft depth of a full basement floor. Where groundwater stands above the floor it presses on the slab and the wall-floor joint, the hydrostatic pressure that drives water through basement concrete.
The soil compounds it: 8 of 12 sampled points are slow-draining ground that holds water rather than shedding it.
And it is not only a floodplain problem: in Polk County, about 23% of basement flood-insurance claims were filed outside the mapped flood zone, and because flood insurance is mostly bought only inside that zone, the real outside-the-zone share is almost certainly higher.
Sources: climate ERA5 reanalysis via Open-Meteo; soil and water table USDA NRCS SSURGO, 17 points sampled. Water-table figures are modeled seasonal highs, not a reading of one lot.
Des Moines requires a permit before any work for which a permit is required under Chapter 26, and the property owner is responsible for ensuring permits are obtained, inspected, and approved. Permit fees are set in the schedule of fees adopted by City Council resolution rather than printed as a simple table in the code. The valuation used to compute permit and plan-check fees must include the total value of all construction work plus finish work, painting, roofing, electrical, plumbing, heating, air conditioning, elevators, fire-extinguishing systems, and other permanent work or equipment, and it may not be less than the current ICC Building Valuation Data. Work started before a required permit is obtained may trigger doubled regular total fees.
Issuing authority: Development Services Department, Permit and Development Division · Verified 2026-07-16
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Des Moinesbasement & foundation FAQ
Why do basements take on water in Des Moines?+
The main driver in Des Moines is groundwater. The seasonal-high water table (modeled from USDA soil survey) rises to about 1.6 ft below grade, shallower than a typical 7 ft basement floor, so at its peak it presses up against the slab and in at the wall-floor joint. Roughly 79 freeze-thaw cycles a year add frost pressure on top of that.
How much does basement waterproofing cost in Des Moines?+
As a planning range, basement waterproofing in Des Moines runs about $2,200–$7,000. That figure is modeled from regional Iowa pricing, not a survey of local jobs, and what you actually pay depends on the method, the size of the basement, and how the water is getting in. Compare real quotes.
Do I need a permit for foundation or waterproofing work in Des Moines?+
Because Des Moines does not publish a foundation-repair or waterproofing fee line in the accessible code, homeowners should confirm the applicable fee through the Permit and Development Division before structural foundation repair, exterior excavation, sump/drainage, or waterproofing work starts. Separate building, electrical, mechanical, plumbing, zoning, engineering, erosion-control, or plan-review fees may apply depending on scope. Permits are issued by Development Services Department, Permit and Development Division. Des Moines requires a permit before any work for which a permit is required under Chapter 26, and the property owner is responsible for ensuring permits are obtained, inspected, and approved. Permit fees are set in the schedule of fees adopted by City Council resolution rather than printed as a simple table in the code. The valuation used to compute permit and plan-check fees must include the total value of all construction work plus finish work, painting, roofing, electrical, plumbing, heating, air conditioning, elevators, fire-extinguishing systems, and other permanent work or equipment, and it may not be less than the current ICC Building Valuation Data. Work started before a required permit is obtained may trigger doubled regular total fees.
My home isn't in a flood zone, can the basement still flood in Des Moines?+
Yes. In Polk County, about 23% of basement flood-insurance claims were filed outside the mapped flood zone, and because flood insurance is mostly bought only inside the zone, the true out-of-zone share is almost certainly higher. Basement water is usually a groundwater problem, which the flood map does not measure.