Equipment and vehicles sit in a parking lot leased as overflow storage just east of the former General Motors main assembly plant property in Janesville. Insiders say land leases are the only deals moving at the 250-acre site, half of which remains under a protracted environmental review by the state Department of Natural Resources.


The mammoth former General Motors plant site in Janesville is still idle—“buttoned up” for a long winter, as one local real estate broker put it.

And sources say that likely will remain so for months as the owner of the former GM site awaits a state Department of Natural Resources environmental review that city officials said is now several months overdue, apparently delayed because of the COVID-19 pandemic’s impact on state agencies.

That ties up about half of the 250-acre industrial brownfield property—by far the largest bloc of such land in Janesville held by any single private or public owner.

After more than two years of heavy demolition and debris removal, owner Commercial Development’s cleanup crews appear to be gone, at least for the time being.

Gone are giant piles of scrap metal from the former plant buildings that workers had spent months sorting and trucking off the site.

What remains is a vast, mostly undisturbed expanse of concrete footings—the one dominant remnant of the GM auto plant that once employed thousands.

For now, the relative emptiness signals a continued wait.


The GM site stands idle and empty after its owner finished removal of almost all remnants of the assembly plant. Remaining is concrete foundation that dominates most of the location. The city is waiting for the site’s owner to provide a second-phase plan to ready the 250-acre site for redevelopment, but a DNR review has been delayed months during the COVID-19 pandemic.

Those with an inside glimpse say concerted plans to move the former auto plant property toward market as Centennial Industrial Park—a multiparcel, light-industry redevelopment site—remain in a holding pattern as a soil and water investigation and environmental remediation report awaits final review by the DNR.

“They’re off the site. It’s buttoned up,” Janesville commercial real estate broker Bill Mears said of Commercial Development’s current work at the property.

Mears is the local broker Commercial Development hired to market the main GM plant site and the 110-acre, former JATCO haul-away yard to the south, which the DNR already has OK’d for future redevelopment.

One of the major questions still is whether the DNR will require Commercial Development to remove some or all of the leagues of leftover concrete foundations that cover most of the north plant site or if the agency will allow the concrete to remain in place, undisturbed, as an environmental cap on a site where heavy industrial operations had run for 100 years.

Tom Clippert, the city’s building director, is the official in charge of compliance under the city’s rules for the former GM site, which is covered by a city overlay district for redevelopment.

Clippert on Wednesday said Commercial Development still has not submitted a phase 2 cleanup plan the city asked for a year ago under deadlines baked into overlay district rules.

In July, Clippert sent a letter to Commercial Development and pressed the owner to provide the city plans for remaining cleanup—including removal of concrete in the ground and other measures the city considers necessary to ready the site for possible redevelopment.

Clippert’s note came after Commercial Development told the city in a letter in late 2019 that it was “deferring” plans for a second phase cleanup until sometime in 2020, when the company believed the DNR would deliver an environmental review that dealt with concrete at the main plant site, along with decisions on other soil and water investigations.

Until the DNR completes the review, Clippert said, the city doesn’t expect to further plans from Commercial Development.

“They’re working with the DNR, and things have been delayed because of COVID, as you can imagine,” Clippert said. “So they’re still working through that (environmental) process with the DNR. And so we’re waiting for that to happen.”

Mears said he believes the DNR’s review might not wrap up until “sometime next year,” which would be more than a year later than the site’s owner and the city had initially expected.

One afternoon this week, the winter sun set over the site, washing the weed-stubbled concrete in a pale, red light.

The only movement a Gazette reporter and photographer observed on the huge property was a yellow utility train engine that crept slowly along a rail line in the back acres.

For now, only slivers of the main plant site are seeing prospects for reuse, and the only real action going on there right now is a handful of land leases for overflow storage, Mears said.

So far, those leases are limited to former plant parking lots, which would serve as “overflow storage” by some local industries who need secured, fenced-in space to stage equipment and vehicles, Mears indicated.

Mears said he is now working on a lease of about 20 acres inside the main plant property and leases on another 10-acre ancillary lot. That’s even as an environmental review for the site awaits DNR approval.

Mears couldn’t give details about the prospective tenant for the 20-acre parcel.

Other leases of the former plant’s parking areas include space east of South Jackson Street that is being used for equipment owned and built at Northland Equipment, which produces custom truck-bed box systems and other products.

Mears indicated the recent land lease deals have come as Commercial Development awaits DNR environmental review of the main plant site.

“On the (main) GM site, it’s a lot better to go with land leasing right now because of the pending environmental (review) issues. It works out better,” Mears said. “It’s not like there’s a concerted move to only leasing land there. It just happens that these prospects want to do a land lease right now. Maybe they’ll eventually own.”


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