An earlier proposal called for a taller, 18-story building, according to an architect who saw the plans.
But its officials said that cost was not exorbitant, given earlier proposals.
The plan, they add, is also more realistic than earlier proposals.
The most striking change from the earlier proposals were the two major office towers.
The earlier proposal, for a building of the same size, would have cost $4.95 million.
The safety report is an elaboration of the earlier proposal, he said.
Supporters said the new bill was more modest than earlier proposals.
But like so many earlier proposals, this one seems unlikely to bring better health care to central Brooklyn any time soon.
Some earlier proposals would doubtless have been better for Europe and its future.
One earlier proposal, on term limits, was defeated in the House.