Ann Arbor, MI
Basement waterproofing and foundation repair costs in Ann Arbor
Local cost ranges and contractors for every job that keeps water out ofan Ann Arbor home, with the soil, water-table, freeze-thaw, and permit data specific to Ann Arbor, MI, not a national average.
What each job costs in Ann Arbor, MI
Modeled ranges for the five most common basement and foundation jobs in Ann Arbor. Pick a job below for its permit notes, guides, and free quotes.
| Service in Ann Arbor | Low | Average | High |
|---|---|---|---|
| Basement Waterproofing | $2,200 | $4,850 | $7,450 |
| Foundation Repair | $2,100 | $5,200 | $8,250 |
| Crawl Space Encapsulation | $2,900 | $5,550 | $8,150 |
| French Drain Installation | $1,450 | $3,800 | $6,100 |
| Sump Pump Installation | $600 | $1,450 | $2,250 |
These ranges are estimates modeled from regional Michigan 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 Ann Arbor
Basement Waterproofing in Ann Arbor
Average basement waterproofing · avg $4,850
Interior and exterior systems that stop water seepage through foundation walls and floors.
How much does basement waterproofing cost in Ann Arbor?+
In Ann Arbor, basement waterproofing typically runs $2,200–$7,450, averaging about $4,850. That range is an estimate modeled from regional Michigan 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 Ann Arbor?+
Ann Arbor's separate grading-fee handout lists a residential grading permit at $250, including plan review and up to four inspections, and its plumbing fee sheet lists sump pumps or sewage ejectors at $15, sewers up to 4 inches at $50, sewers over 4 inches at $65, and miscellaneous plumbing items or code repair at $25. Waterproofing projects may therefore involve building, grading, and plumbing fees depending on the scope. Permits are issued by Building and Construction Services. Ann Arbor's July 15, 2025 building-fee sheet names basement waterproofing directly and prices it the same as a building permit. Building permits include a $15 non-refundable base application fee, plus a permit fee based on estimated project cost: $100 up to $1,000, $100 plus $10 per $1,000 for $1,000 to $50,000, $100 plus $9 per $1,000 for $50,000 to $100,000, and lower per-thousand rates above that. Plan examination adds 20% of the building permit fee. The same fee sheet says basement waterproofing requires grading plan review and a grading permit based on estimated construction cost.
Is basement waterproofing worth it in Ann Arbor?+
With 36.7" of annual rainfall and about 83 freeze-thaw cycles a year, untreated water intrusion in Ann Arbor 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
- ~1.5 ft · above basement floor
- Permit
- Usually required
- Local soil
- Wawasee (mixed drainage)
- Slow-draining ground
- 8 / 17 sampled points
- Freeze-thaw cycles
- 83 / yr
- Local pros
- 12 available
Foundation Repair in Ann Arbor
Average foundation repair · avg $5,200
Fixing cracks, bowing walls, and settlement with piers, anchors, and structural reinforcement.
How much does foundation repair cost in Ann Arbor?+
In Ann Arbor, foundation repair typically runs $2,100–$8,250, averaging about $5,200. That range is an estimate modeled from regional Michigan 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 Ann Arbor?+
Ann Arbor's separate grading-fee handout lists a residential grading permit at $250, including plan review and up to four inspections, and its plumbing fee sheet lists sump pumps or sewage ejectors at $15, sewers up to 4 inches at $50, sewers over 4 inches at $65, and miscellaneous plumbing items or code repair at $25. Waterproofing projects may therefore involve building, grading, and plumbing fees depending on the scope. Permits are issued by Building and Construction Services. Ann Arbor's July 15, 2025 building-fee sheet names basement waterproofing directly and prices it the same as a building permit. Building permits include a $15 non-refundable base application fee, plus a permit fee based on estimated project cost: $100 up to $1,000, $100 plus $10 per $1,000 for $1,000 to $50,000, $100 plus $9 per $1,000 for $50,000 to $100,000, and lower per-thousand rates above that. Plan examination adds 20% of the building permit fee. The same fee sheet says basement waterproofing requires grading plan review and a grading permit based on estimated construction cost.
Is foundation repair worth it in Ann Arbor?+
With 36.7" of annual rainfall and about 83 freeze-thaw cycles a year, untreated water intrusion in Ann Arbor 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
- ~1.5 ft · above basement floor
- Permit
- Usually required
- Local soil
- Wawasee (mixed drainage)
- Slow-draining ground
- 8 / 17 sampled points
- Freeze-thaw cycles
- 83 / yr
- Local pros
- 12 available
Crawl Space Encapsulation in Ann Arbor
Average crawl space encapsulation · avg $5,550
Sealing and vapor-barriering a crawl space to control moisture, mold, and wood rot.
How much does crawl space encapsulation cost in Ann Arbor?+
In Ann Arbor, crawl space encapsulation typically runs $2,900–$8,150, averaging about $5,550. That range is an estimate modeled from regional Michigan 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 Ann Arbor?+
Ann Arbor's separate grading-fee handout lists a residential grading permit at $250, including plan review and up to four inspections, and its plumbing fee sheet lists sump pumps or sewage ejectors at $15, sewers up to 4 inches at $50, sewers over 4 inches at $65, and miscellaneous plumbing items or code repair at $25. Waterproofing projects may therefore involve building, grading, and plumbing fees depending on the scope. Permits are issued by Building and Construction Services. Ann Arbor's July 15, 2025 building-fee sheet names basement waterproofing directly and prices it the same as a building permit. Building permits include a $15 non-refundable base application fee, plus a permit fee based on estimated project cost: $100 up to $1,000, $100 plus $10 per $1,000 for $1,000 to $50,000, $100 plus $9 per $1,000 for $50,000 to $100,000, and lower per-thousand rates above that. Plan examination adds 20% of the building permit fee. The same fee sheet says basement waterproofing requires grading plan review and a grading permit based on estimated construction cost.
Is crawl space encapsulation worth it in Ann Arbor?+
With 36.7" of annual rainfall and about 83 freeze-thaw cycles a year, untreated water intrusion in Ann Arbor 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
- ~1.5 ft · above basement floor
- Permit
- Usually required
- Local soil
- Wawasee (mixed drainage)
- Slow-draining ground
- 8 / 17 sampled points
- Freeze-thaw cycles
- 83 / yr
- Local pros
- 12 available
French Drain Installation in Ann Arbor
Average french drain installation · avg $3,800
Perimeter drainage that channels groundwater away from the foundation before it gets in.
How much does french drain installation cost in Ann Arbor?+
In Ann Arbor, french drain installation typically runs $1,450–$6,100, averaging about $3,800. That range is an estimate modeled from regional Michigan 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 Ann Arbor?+
Ann Arbor's separate grading-fee handout lists a residential grading permit at $250, including plan review and up to four inspections, and its plumbing fee sheet lists sump pumps or sewage ejectors at $15, sewers up to 4 inches at $50, sewers over 4 inches at $65, and miscellaneous plumbing items or code repair at $25. Waterproofing projects may therefore involve building, grading, and plumbing fees depending on the scope. Permits are issued by Building and Construction Services. Ann Arbor's July 15, 2025 building-fee sheet names basement waterproofing directly and prices it the same as a building permit. Building permits include a $15 non-refundable base application fee, plus a permit fee based on estimated project cost: $100 up to $1,000, $100 plus $10 per $1,000 for $1,000 to $50,000, $100 plus $9 per $1,000 for $50,000 to $100,000, and lower per-thousand rates above that. Plan examination adds 20% of the building permit fee. The same fee sheet says basement waterproofing requires grading plan review and a grading permit based on estimated construction cost.
Is french drain installation worth it in Ann Arbor?+
With 36.7" of annual rainfall and about 83 freeze-thaw cycles a year, untreated water intrusion in Ann Arbor 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
- ~1.5 ft · above basement floor
- Permit
- Usually required
- Local soil
- Wawasee (mixed drainage)
- Slow-draining ground
- 8 / 17 sampled points
- Freeze-thaw cycles
- 83 / yr
- Local pros
- 12 available
Sump Pump Installation in Ann Arbor
Average sump pump installation · avg $1,450
Pump systems that evacuate collected water from a basement or crawl space pit.
How much does sump pump installation cost in Ann Arbor?+
In Ann Arbor, sump pump installation typically runs $600–$2,250, averaging about $1,450. That range is an estimate modeled from regional Michigan 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 Ann Arbor?+
Ann Arbor's separate grading-fee handout lists a residential grading permit at $250, including plan review and up to four inspections, and its plumbing fee sheet lists sump pumps or sewage ejectors at $15, sewers up to 4 inches at $50, sewers over 4 inches at $65, and miscellaneous plumbing items or code repair at $25. Waterproofing projects may therefore involve building, grading, and plumbing fees depending on the scope. Permits are issued by Building and Construction Services. Ann Arbor's July 15, 2025 building-fee sheet names basement waterproofing directly and prices it the same as a building permit. Building permits include a $15 non-refundable base application fee, plus a permit fee based on estimated project cost: $100 up to $1,000, $100 plus $10 per $1,000 for $1,000 to $50,000, $100 plus $9 per $1,000 for $50,000 to $100,000, and lower per-thousand rates above that. Plan examination adds 20% of the building permit fee. The same fee sheet says basement waterproofing requires grading plan review and a grading permit based on estimated construction cost.
Is sump pump installation worth it in Ann Arbor?+
With 36.7" of annual rainfall and about 83 freeze-thaw cycles a year, untreated water intrusion in Ann Arbor 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
- ~1.5 ft · above basement floor
- Permit
- Usually required
- Local soil
- Wawasee (mixed drainage)
- Slow-draining ground
- 8 / 17 sampled points
- Freeze-thaw cycles
- 83 / yr
- Local pros
- 12 available
What affects the cost in Ann Arbor
Climate: ERA5 reanalysis via Open-Meteo
USDA soil maps put Wawasee soils across much of Ann Arbor, with 8 of the 17 rated sample points in slow-shedding hydrologic groups. Drainage is genuinely mixed across the city, and roughly 83 freeze-thaw cycles a year work at any crack that lets it in. Soil varies sharply across Ann Arbor, so treat this as the pattern across 17 sampled points rather than a description of your lot.
Soil: USDA NRCS SSURGO · Wawasee loam, 2 to 6 percent slopes · 17 points sampled
Permits in Ann Arbor
Ann Arbor's separate grading-fee handout lists a residential grading permit at $250, including plan review and up to four inspections, and its plumbing fee sheet lists sump pumps or sewage ejectors at $15, sewers up to 4 inches at $50, sewers over 4 inches at $65, and miscellaneous plumbing items or code repair at $25. Waterproofing projects may therefore involve building, grading, and plumbing fees depending on the scope.
Ann Arbor's July 15, 2025 building-fee sheet names basement waterproofing directly and prices it the same as a building permit. Building permits include a $15 non-refundable base application fee, plus a permit fee based on estimated project cost: $100 up to $1,000, $100 plus $10 per $1,000 for $1,000 to $50,000, $100 plus $9 per $1,000 for $50,000 to $100,000, and lower per-thousand rates above that. Plan examination adds 20% of the building permit fee. The same fee sheet says basement waterproofing requires grading plan review and a grading permit based on estimated construction cost.
Issuing authority: Building and Construction Services · Official fee schedule · Verified 2026-07-16
What puts water in an Ann Arbor basement
The ground under Ann Arbor holds water close to the surface: in a typical year the seasonal-high water table modeled from USDA soil survey rises to within about 1.5 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.
Roughly 83 freeze-thaw cycles a year (ERA5) add frost pressure against the wall on top of that.
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.
Ann Arbor's July 15, 2025 building-fee sheet names basement waterproofing directly and prices it the same as a building permit. Building permits include a $15 non-refundable base application fee, plus a permit fee based on estimated project cost: $100 up to $1,000, $100 plus $10 per $1,000 for $1,000 to $50,000, $100 plus $9 per $1,000 for $50,000 to $100,000, and lower per-thousand rates above that. Plan examination adds 20% of the building permit fee. The same fee sheet says basement waterproofing requires grading plan review and a grading permit based on estimated construction cost.
Issuing authority: Building and Construction Services · Verified 2026-07-16
Get free quotes in Ann Arbor
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Ann Arborbasement & foundation FAQ
Why do basements take on water in Ann Arbor?+
The main driver in Ann Arbor is groundwater. The seasonal-high water table (modeled from USDA soil survey) rises to about 1.5 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 83 freeze-thaw cycles a year add frost pressure on top of that.
How much does basement waterproofing cost in Ann Arbor?+
As a planning range, basement waterproofing in Ann Arbor runs about $2,200–$7,450. That figure is modeled from regional Michigan 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 Ann Arbor?+
Ann Arbor's separate grading-fee handout lists a residential grading permit at $250, including plan review and up to four inspections, and its plumbing fee sheet lists sump pumps or sewage ejectors at $15, sewers up to 4 inches at $50, sewers over 4 inches at $65, and miscellaneous plumbing items or code repair at $25. Waterproofing projects may therefore involve building, grading, and plumbing fees depending on the scope. Permits are issued by Building and Construction Services. Ann Arbor's July 15, 2025 building-fee sheet names basement waterproofing directly and prices it the same as a building permit. Building permits include a $15 non-refundable base application fee, plus a permit fee based on estimated project cost: $100 up to $1,000, $100 plus $10 per $1,000 for $1,000 to $50,000, $100 plus $9 per $1,000 for $50,000 to $100,000, and lower per-thousand rates above that. Plan examination adds 20% of the building permit fee. The same fee sheet says basement waterproofing requires grading plan review and a grading permit based on estimated construction cost.