A 200-year-old beach house under renovation in Chatham collapsed after heavy winds from today’s coastal storm blew it off its foundation, officials said. “It’s right across from the beach, and it looks like the gusts of wind twisted it sideways and then it started to pancake,” said Chatham Fire Department Deputy Chief Peter Connick.The single-story historic home on Main Street had been elevated on blocks as it underwent renovation, Connick said. Chatham firefighters responded to the collapse at 7:11 a.m. No injuries were reported. The house was unoccupied and had been fenced off by contractors as it was under construction.  Authorities have not yet determined the cost of damage to the home. “I mean, how do you value history?” Connick said.