A handful of businesses are looking for new space after the Bristol Industrial Park informed them it is closing down a group of buildings in the park.

The business owners received word of the shutdown on May 1, informing them they must vacate the premises by the end of the month, in a letter from Merritt Meyer, president of Mosaico, the non-profit organization that owns and manages the park.

“Regretfully, I must inform you that Mosaico has made the difficult decision to shut down Building Group 3, effective June 1, 2017,” Mr. Meyer wrote to business owners. “As a consequence of this decision, all Building Group 3 tenants must completely vacate their units by 5 p.m. on May 31. No re-entry will be allowed after that date.”

The decision to close the building group was Mosaico’s, according to Executive Director Diana Campbell, but at the urging of the state Fire Marshal’s office and town officials. The buildings, constructed in the 1890s, lack fire alarms and sprinkler systems required in such manufacturing facilities. Mosaico has been working for several years to install the fire suppression systems, bringing two other building groups in the park into compliance, but a recent fire in Building Group 3 shined a spotlight on the lack of such safety equipment there.

“We were sort of backed into the decision,” Ms. Campbell said. “We didn’t have a lot of choice. It would be a substantial amount of money. We decided we would just shut it down. The fire sort of accelerated things. ”

The accidental fire was small and quickly contained, largely thanks to a sprinkler that had been installed in that part of Building Group 3, according to Bristol Fire Chief Michael DeMello. The blaze, minor as it turned out to be, alarmed the Fire Marshal’s office, he said.

“The Fire Marshal said you got lucky with this one, but enough is enough,” Chief DeMello said. “If there wasn’t a sprinkler in that part of the building, we’d be having a very different conversation.”

Bringing the group of buildings into compliance would cost upwards of $4 million, Ms. Campbell said, about four times the industrial park’s annual operating budget. Mosaico relies on rent from its 29 tenants to fund day-to-day operations. Capital expenses, such as improvements to buildings and firequire applying for federal Community Development Black Grants.

The shutdown displaces a handful companies that rely on the space to do business, including Mack Motorsport SVC., Steel Maintenance, Dupont Designs, Monis Landscaping and Thundermist Powerboats, Inc. The tenants have leases that state they can be displaced with just 30 days notice, Ms. Campbell said, noting Mosaico itself had to vacate the premises to elsewhere in the park.

Most of the businesses were quiet Tuesday afternoon, and most calls to owners seeking comment were not returned. One business owner, who asked that his name not be used, complained about the lack of notice given to pack up and move.

“Thirty years I’ve been in the park,” he said. “They’re only giving us 30 days notice. I find it very disheartening.”

Ms. Campbell said Mosaico was left with little choice, especially after the small fire a couple weeks ago focused attention on the problem. She said Mosaico plans to appeal to the state Fire Safety Board, which could buy more time for businesses, but will not prevent the shutdown. The lack of funding to fix the fire suppression problems will not help her case.

“I’m asking for an extension; some of these people have a lot of stuff in there,” she said, noting she is not confident. “In order to be successful in an appeal, I need a plan, which means we need a timeframe. This is a very big project that requires a large investment.”

Mosaico is working with an architect to alter the buildings — perhaps removing some and restoring the original open-air courtyard that was closed in over time — and lower the cost of fire suppression. “If I can come up with a timeline that shows progress, we can appeal, but nothing is set in stone,” Ms. Campbell said.

In the meantime, she is working with business owners to find them vacant space inside the park, believing she has found space for two of them. Another — Monis Landscaping — has already moved to a new space on Gooding Avenue.

The town is also offering to help displaced tenants. Economic Development Coordinator Jessica Pflaumer said business owners can contact her at Town Hall to learn where commercial space is available nearby.

“I keep a list of commercial properties in town. I’m working with the tenants to get them in touch with potential landlords,” Ms. Pflaumer said. “There are a few spaces available. I’m here to help them identify spaces that may work for their long-term needs.”