City Councilor Tito Jackson’s push against a helipad for General Electric — a key part of the deal touted by Mayor Martin J. Walsh — was backed up by residents and businesses who bashed the plan at a public meeting last night.

Jackson drew applause from several dozen people at the meeting as he blasted the use of up to $12 million in state funds to build the heliport.

“If they want a helipad, they can build their own helipad,” Jackson said. “Not with our money and not on our watch.”

City and state officials promised to provide GE with a helipad — which MassDOT Secretary of Transportation Stephanie Pollock said would cost between $2 million and $12 million — as part of the $120 million incentive package to lure the company to Boston.

State officials have proposed building a heliport at or on floating pads next to the Drydock 4 area of the Raymond L. Flynn Marine Park. Using that area would keep flight paths and helicopter noise away from neighborhoods, officials said.

“The city looks forward to engaging in a conversation with state officials and the community about bringing a public heliport to Boston as part of a comprehensive effort to support business growth and prioritize public safety and emergency preparedness,” a Walsh spokeswoman said in a statement.

But residents and business owners pushed back, saying helicopters don’t obey current flight plans and their noise would be devastating to local businesses. Managers at the Blue Hills Bank Pavilion — which is right next to the proposed helipad location — and nearby Legal Sea Foods said helicopter noise would destroy their outdoor business models.

“It’s an existential threat to my employer and so it’s a threat to the survival of the people I represent,” said International Alliance Of Theatrical Stage Employees President Christopher Welling of what a helipad would do to the Pavilion.

Others slammed the idea of a helipad in South Boston with the airport only a short drive away.

“It’s a 5-minute ride through that damn tunnel and if we can use it, GE can use it,” said South Boston community activist Laura McDonagh.

“They did get a basket of goodies, no question about that,” said Joe Slavet, former head of the Boston Municipal Research Bureau. “The helipad looks like something that’s not a general benefit to the general public.”