Port Builders, Inc: mobile home park in Fort Gratiot, Michigan
Run this park? Correct anything on this page free — no card, no account.
A 195-space mobile home park in Fort Gratiot, MI. Everyday shopping is within a couple of miles.
- Size
- 195 spaces · 9th largest of 29 in St. Clair County (median 148)
- Size vs the state
- Larger than about 68% of Michigan's registered parks
- Flood zone
- N/A — outside the mapped floodplain
- Nearest
- Grocery 0.3 mi · pharmacy 0.7 mi · clinic 0.3 mi
- Neighborhood
- Median rent $956/mo · median income $79,000 · 12% mobile homes
Distances are straight-line, so the drive is longer. Internet and neighborhood figures describe the surrounding town, not this park’s own lots. Rent limits are not legal advice.
Looking for the office number? Their Google Maps listing may have it →
Worth knowing
Fort Gratiot is a rural community about 45 miles northeast of Sterling Heights (about 130,000 people). 14 other registered parks lie within about 10 miles.
For residents
- Water billing: Michigan requires a park to measure water use accurately and consistently before it can bill for it separately — billing for water without metering is an unfair practice — and suspected water-tariff violations get referred to the Public Service Commission (MCL 125.2328). Check the math free with the water submeter calculator.
- Paying rent: ask the park office how they take payment. Parks that run on Lot Sidekick hand residents clear, itemized rent and water bills.
Common questions
How many spaces does Port Builders, Inc have?
Port Builders, Inc has 195 total spaces per the Michigan park registry (as of July 23, 2026).
Is this Port Builders, Inc's official website or phone number?
No. This is Port Builders, Inc's page in the Lot Sidekick park directory, built from the state registry. We're independent of the park and can't take messages for it. The park office hasn't added a public contact here yet; if you own the park, claiming the page (free) lets you add one.
Where is Port Builders, Inc?
4335 24th Ave, Fort Gratiot, Michigan 48059, in St. Clair County.
How much is lot rent at Port Builders, Inc?
Port Builders, Inc doesn't publish its lot rent anywhere we could find, and we won't guess at a figure. Call the park office to ask. If you run this park, you can add your real lot rent to this page for free.
How much can lot rent go up at Port Builders, Inc?
Michigan has no mobile-home-specific rent law — no cap on the amount, and no dedicated notice period. A lot-rent increase is treated like any change to a month-to-month tenancy under Michigan's general statute (MCL 554.134), so check what your own lease requires.
Nearby parks in St. Clair County
- Keewahdin Enterprises, LLC · Fort Gratiot · 147 spaces
- Brandymore Partners LLC · Fort Gratiot · 192 spaces
- Indian Trail MHC LLC · Burtchville · 496 spaces
- Stocks Creek Mi LLC · Port Huron · 148 spaces
- James a Radatz · Port Huron · 35 spaces
Free tools
- Park value & profitability estimator: what a 195-space park earns and what it's worth, at the cap rate you pick.
- Rent increase calculator: the 2026 Michigan cap applied to a 195-space park.
- RUBS calculator: split one master-meter water bill across 195 lots so the pennies add up exactly.
- Water submeter calculator: two meter reads in, an at-cost tenant bill out.
- Notice generator: a clean, printable rent-increase notice with the dates filled in.
- Prorated rent calculator: the exact first-month charge when someone moves in mid-cycle.
Registry record
| State registry ID | 1201082 |
|---|---|
| Registered with | The Michigan Manufactured Housing Commission (LARA) |
| Listed as | PORT BUILDERS, INC |
Data from official state registry that may be out of date.
Source: Michigan Department of Licensing and Regulatory Affairs (LARA) manufactured home community licenses (aca-prod.accela.com), as of July 23, 2026. Counts come from the state's registry and can lag real life. See something out of date? Tell us, or claim the page.