Troy particulars
Only 11.7 percent of Troy's housing units predate 1960, though 60.5 percent predate 1980, among about 34,997 homes with a median value of $396,800. The Building Department is at 500 W. Big Beaver Rd, 248-524-3300, open 8 a.m. to 4:30 p.m. Its codes page says the 2015 Michigan Residential Code remains in effect after LARA agreed to pause the 2021 version, which settles which edition your contractor should be building to.
Troy's residential permit requirements talk about plot plans, grade slips and plans that include the foundation. Nothing we read addresses repairing a foundation or waterproofing one, and we have no Troy fee figure, so ask the department. A USGS atlas says former glacial lake beds appear as flat, clay-rich sediments in southeastern Oakland County, and EPA's ecoregion map puts Troy's center on the clayey Maumee Lake Plain; both are county-scale or regional readings, and we place Troy in that corner ourselves. Troy sits in Oakland County, EPA radon Zone 2. Clawson is 3.3 miles away and Birmingham 4.5.
Foundation repair in Troy: what to know
Permit questions go to the Building Department on W. Big Beaver Rd, open 8am to 4:30pm, at 248-524-3300. The permit page lists a plot plan, grade slip and plans including the foundation, and says plumbing, electrical and mechanical permits can be applied for online. Only 11.7 percent of homes predate 1960 and 60.5 percent predate 1980, among 34,997 units.
Troy's codes page says the 2015 Michigan Residential Code stays in effect while the 2021 version is paused. That makes the 2015 provisions the yardstick for repair quotes. The USGS describes flat, clay-rich former lake-bed sediments in southeastern Oakland County, which is regional context we read only in outline; it does not tell you what is under your lot. Radon Zone 2 covers the whole county under EPA's county map.
Permits for foundation repair in Troy
The base code requires a permit to repair or alter a structure, Michigan's exemption list does not name foundation work, and your city's building official makes the call.
Many cities run their own building department, so start by asking the City of Troy building department who issues foundation repair permits.
When a foundation problem is an emergency
- A wall is visibly moving or has shifted since you last looked.
- A floor is dropping or a doorframe has pulled apart in days.
- Water is coming through a wall near the electrical panel. Do not step into that water.
- A crack that has not changed in months and lets no water in.
What to do before you call a foundation company
Try this first: call 248-524-3300 and ask if repair of an existing foundation needs a building permit.
- Photograph each crack with a coin beside it, and mark both ends with a pencil and the date.
- Check that downspouts end away from the wall; the University of Minnesota Extension lists grading and gutters ahead of any drainage system.
- Ask the first company who diagnosed the problem and whether it would also do the repair.
What foundation repair costs
The estimate below is the Michigan-wide one, adjusted for Michigan wages and not for Troy in particular. The same table is on the foundation repair page. How we estimate costs. Prices as of Oct 19, 2026.
| Item | Figure | What it is |
|---|---|---|
| Estimated range, not a quote | $2,300 to $8,375 per project | Built from 2 national published ranges, adjusted by the Michigan cement mason 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. |
| 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. |
| Construction laborers, Michigan median | $49,590 a year | What workers are paid (BLS 2025 data via O*NET), not what you are charged. |
| Civil engineers, Michigan median | $92,100 a year | What civil engineers are paid, not what an engineer's report costs. No wage category covers foundation crews exactly. |
| Building permit, Ann Arbor | $15 application fee, then $100 plus $10 per $1,000 of project cost | Revised July 2025. Basement waterproofing is named. |
| Building permit, Grand Rapids | $79 for work valued at $1 to $1,000; $215 at $20,001 to $21,000 | FY2027 chart. No foundation line. |
| Building permit, Lansing | $175 for work valued at $4,001 to $10,000 | Schedule of July 1, 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 cement mason 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 foundation repair
How do they fix foundation problems?
The repair depends on the cause, and the cause has to be found first. Typical work is sealing or injecting a crack, bracing or rebuilding a wall, adding support under a footing, or fixing grading and drainage. We have no source that ranks these methods, so ask why the proposed one fits the cause.
How much does foundation repair cost in Michigan?
Our estimate for foundation repair in Michigan is $2,300 to $8,375 per project, built from national published ranges and adjusted for Michigan wages, because we have collected no Michigan quotes. A crack seal and a pier job sit at very different points in that range. Ask for an itemized price that names the method and the permit, and shows the license number.
Does foundation repair need a permit in Michigan?
Probably, but your city decides. The base code requires a permit to repair or alter a structure and Michigan's exemption list does not name foundation work, yet no state page we read says so in plain words. Ann Arbor, Dearborn, Livonia, Sterling Heights and Warren print waterproofing as a permit item, so call your building office before work starts.