Bay City particulars
In the Census ACS 2023 five-year estimates, 90.9 percent of Bay City's homes were built before 1980 and the median home value is $89,900. Ask a roofer to look at the whole roof and the deck as well as the one spot that leaks. The LARA Statewide Jurisdiction List (revised Oct 6, 2026) marks building-code enforcement in the City of Bay City as local, so the city runs its own and issues roofing permits where one applies.
The List does not say whether a Bay City re-roof needs a permit, and no city page we can cite settles it. The city's building department decides, so call before a contract is signed. Bay County's NCEI storm reports for Jul 2024 to Jun 2026 show 2 hail reports of 1 inch or larger on 2 days (largest 1.0 in), 12 wind reports of 50 knots or more on 7 days (largest 61 kt) and no tornado reports.
The totals are reports as NOAA logged them, and they do not prove or rule out damage to a particular roof. The Bay City metro's median roofer wage is $23.08 an hour, medium confidence via O*NET: that is pay, not price. Saginaw and Midland are the nearest neighbors, and the county storm history tool lays out the counts by county.
Roof replacement in Bay City: what to know
Replacement removes the old layers down to the roof deck under the state's 2015 code text. Re-covering is barred where the existing roof is deteriorated or already has two or more applications. Along the eaves the ice barrier runs 24 inches inside the exterior wall line, and we found no Michigan amendment to that text. Bay County is not among the snow values we recorded.
Nine in ten homes here predate 1980, and the median home value is $89,900. For a replacement, the permit question is the city's, and we cannot confirm its answer. Ask the building department before the contract date, and write any fee into the contract so the final price is not a surprise.
Permits for roof replacement in Bay City
Roofing is not on the state's exemption list, enforcement is local, and cities answer differently.
Many cities run their own building department, so start by asking the City of Bay City building department who issues roofing permits.
When a replacement cannot wait for the calendar
- The old covering is off and the deck is open to rain or snow with no cover on it. Ask the company in writing what it will do tonight.
- Water is entering the house during the job.
- An aging roof with no leaks: compare written estimates and read your policy first.
What to gather before you ask for estimates
Try this first: ask each company which layers it will remove and to confirm that in writing.
- Find your declarations page and note whether roof losses settle at actual cash value or replacement cost, and whether you have ordinance and law coverage.
- Get written estimates, as DIFS advises, and ask each company what it will do about tear-off to the deck, the ice barrier, underlayment, flashing and the permit.
- Check each license number on LARA before you sign.
What roof replacement costs
The estimate below is the Michigan-wide one, adjusted for Michigan wages and not for Bay City in particular. The same table is on the roof replacement page. How we estimate costs. Prices as of Oct 19, 2026.
| Item | Figure | What it is |
|---|---|---|
| Estimated range, not a quote | $6,225 to $15,400 per roof, tear-off included | Built from two national published ranges, adjusted by the Michigan roofer median wage ratio (1.07) plus a typical permit fee ($100). No Michigan roofing company price is shown, because none of the companies we looked at published a price we could count. |
| Estimated range per square, not a quote | $275 to $740 per square (100 square feet), installed | Built from one national published range, adjusted by the Michigan roofer median wage ratio (1.07). No Michigan roofing company price is shown, because none of the companies we looked at published a price we could count. |
| Roofer wage, Michigan median | $28.62 an hour | 25th to 75th percentile $23.02 to $37.56. What Michigan roofers are paid (BLS May 2025, read through O*NET OnLine), not what a company charges you. Medium confidence. |
| Roofer helper wage, Michigan median | $20.07 an hour | 25th to 75th percentile $18.50 to $23.86. A wage, not a price. Medium confidence. |
| Residential re-roofing permit, Grand Rapids | $66 | FY2027 fee schedule. |
| Roof or re-roof permit, Sterling Heights | $78, plus $56 application | Building permit application, 2026-27. |
| Roof permit, East Lansing | $60 application, plus $140 residential | Unclear whether the $140 includes the $60. |
| Re-roofing permit, Kalamazoo | $52 | 2026 fee schedule; other fees may add to it. |
| Roofing permit, Midland | Valuation is squares times $300; table starts at $78 for the first $1,000 | Whether the roofing fee uses this table is our inference. |
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 roofer median wage ratio to the US (1.07, BLS May 2025 data read through O*NET OnLine) and adds a typical permit fee ($100). The wage and permit rows in the table are what roofing workers are paid and what a city's own schedule charges, and neither is a price. We have not collected quotes, and we found no Michigan roofing company that publishes a price we could count. Full method.
Questions about roof replacement
How many layers of shingles can a Michigan roof have?
Under the 2015 code, a re-cover is barred where the existing roof already has two or more applications of roof covering, so a second layer in total is the limit. A replacement includes tear-off to the deck. Re-cover is also barred over a water-soaked or deteriorated roof.
Does Michigan require an ice barrier on a new roof?
Michigan's table says yes, along the eaves: from the lowest edge to at least 24 inches inside the exterior wall line. Slopes of 8:12 or steeper also need at least 36 inches along the slope. We rate the distances medium confidence.
Do I need a permit to replace my roof in Michigan?
It depends on your city: Grand Rapids and Sterling Heights require one, and Portage requires none for shingles only. Ask the building department before you sign.