Florida property insurers are jacking up rates by double-digit percentages, blaming the hikes on lingering damage from past hurricanes, a wave of litigation, and a law that encourages lawyers to sue by allowing courts to award them big fees.

The rate increases in Florida, the third-largest property insurance market among U.S. states, are the highest in memory, according to some insurance agents and residents. One danger, they say, is that the new rates could make owning a home in Florida unaffordable.

“I was flabbergasted,” said Karlos Horn, a 35-year-old law student who owns a four-bedroom, single-family home in Hendry County, Florida. He said his premium doubled to $200 per month last August.

That is equivalent to half of his $400 mortgage payment and the largest increase in his five years as an owner.