Farmington Hills particulars
At a median value of $333,200, Farmington Hills homes carry enough equity that a bad repair can cost more than a good diagnosis, and 53.7 percent of them predate 1980. The city has 83,316 residents. Oakland County is EPA radon Zone 2, a 2 to 4 pCi/L county average, so a kit from the hardware store is the sensible first step. The Building Division sits at 31555 W. Eleven Mile Rd, 248-871-2450, and takes inspection requests by an online form; confirm which counter handles foundation work, because we found no page that says.
Michigan's contractor license applies from $600 of labor and materials, so a crack injection or a drain job almost always needs a licensed company, and the contract should show its license number. The 2015 Michigan Residential Code is the edition in effect, according to LARA's notice of the July 2025 court order. Farmington is 1.7 miles away and Novi 5.7.
Basement waterproofing in Farmington Hills: what to know
The state's maintenance and alteration license lists basement waterproofing as a craft, so a company that does it above $600 should hold that craft or a builder license. The city is in Oakland County, where the USGS describes clay-rich former lake beds in the southeast; Farmington Hills is in the county's southeast, though that is our reading of the map description and not a lot finding.
Sump and drain work may need a plumbing permit, which is a separate application. Compare how neighbors treat it: Livonia prints a full waterproofing checklist, and the permits guide lists the rest. Whoever you hire, ask for the license number and look it up at michigan.gov/statelicensesearch before paying a deposit, since the aggregate $600 rule covers labor and materials together.
Permits for basement waterproofing in Farmington Hills
Five of the ten cities we read name waterproofing as a permit item, and the rest print no line, so ask your city.
Many cities run their own building department, so start by asking the City of Farmington Hills building department who issues foundation repair permits.
When a wet basement is an emergency
- Water is rising near the electrical panel, outlets or furnace. Stay out of the water.
- A wall is bowing or has cracked inward while wet.
- Damp patches or a musty smell in dry weather.
- A seep after heavy rain that drains away on its own.
What to check before you call about a wet basement
Try this first: ask your contractor which craft is on its license.
- Run a humidity check and watch whether the damp shows on dry days; condensation looks like a leak in summer.
- Make sure downspouts end beyond the wall and the soil slopes away from it.
- Ask each company where the water enters and what it would try first.
What basement waterproofing costs
The estimate below is the Michigan-wide one, adjusted for Michigan wages and not for Farmington Hills in particular. The same table is on the basement waterproofing page. How we estimate costs. Prices as of Oct 19, 2026.
| Item | Figure | What it is |
|---|---|---|
| Estimated range, not a quote | $4,375 to $13,500 per project | Built from 2 national published ranges, adjusted by the Michigan construction laborer median wage ratio (1.05). No Michigan foundation company price is shown, because none of the companies we looked at published a price we could count. |
| Estimated range per square foot, not a quote | $4 to $12 per square foot, interior system | Built from one national published range, adjusted by the Michigan construction laborer median wage ratio (1.05). No Michigan foundation company price is shown, because none of the companies we looked at published a price we could count. |
| Construction laborers, Michigan median | $49,590 a year | What workers are paid (BLS 2025 data via O*NET), not what you are charged. |
| Cement masons and concrete finishers, Michigan median | $59,860 a year | What workers are paid (BLS 2025 data via O*NET), not what you are charged. |
| Building permit, Ann Arbor | $15 application fee, then $100 plus $10 per $1,000 of project cost | Waterproofing is priced the same as a building permit, plus grading review. |
| Renovation permit, Dearborn | $100 plus $15 per $1,000 above $2,000, with a $100 processing fee | Plan review of $1 per $1,000 includes waterproofing. |
| Waterproofing application, Livonia | $45 administrative fee | Building permit and plan review fees are based on cost; we did not find the schedule. |
| Plumbing permit, Sterling Heights | $55 for basement waterproofing, plus a $55 application fee | 2026-27 plumbing chart. |
| Plumbing permit, Warren | $80 for basement waterproofing, $80 minimum | 2025 application. Warren's building fee sheet is dated 2014. |
| Plumbing permit, Westland | $50 for interior perimeter subsoil drainage and sump pit, plus $100 administration fee | Revised July 2026. |
How we estimate costs: the Estimated range row is a model, not a quote. It takes two published national ranges for this job (cost guides from third-party sites that we have not verified and do not cite) and multiplies them by Michigan's construction laborer median wage ratio to the US (1.05, BLS 2025 data read through O*NET OnLine). No permit fee is added: the city permit rows below are shown as printed. The wage and permit rows are what workers are paid and what a city's own schedule charges, and neither is a price. Your soil, water and the repair method move a real quote well outside any range, so get an independent diagnosis first. We have not collected quotes, and we found no Michigan foundation company that publishes a price we could count. Full method.
Questions about basement waterproofing
What is a waterproofed basement?
One where below-grade walls are treated to resist liquid water, not only dampness. The 2015 residential code calls for dampproofing in ordinary conditions and waterproofing where a high water table or severe soil-water conditions are known to exist.
How much does basement waterproofing cost in Michigan?
Our estimate for basement waterproofing in Michigan is $4,375 to $13,500 per project, or $4 to $12 per square foot, interior system. It is modeled from national published ranges, because we have collected no Michigan quotes. The University of Minnesota Extension ranks exterior drainage as the most costly and most effective option and gives no dollars. Ask for an itemized written price.
Does waterproofing a basement need a permit in Michigan?
In five of the ten cities we read, yes, it is a named item: Ann Arbor, Dearborn, Livonia, Sterling Heights and Warren. Westland lists interior drains under plumbing. Ask your own building office.