Square Foot Construction Costs

I live in and help run a five story walk up brownstone coop with around 7,200 square feet of total space. Our insurance policy expires soon and I want to increase the coverage. We currently have $1 million, which seems low given construction costs should there be a catastrophic loss. The question is, what exactly would it cost per square foot to replace a five story, 7200 square foot building in brownstone brooklyn. We wouldn’t need to cover interior finishes, that’s responsibility of the individual owners. I’ve heard anywhere between $150 and $300 a square foot. Any ideas?

By sixtysox |