It happened on Thursday afternoon, gouging the wood on the house and tearing off two shutters. A passenger received a bump on the leg and the horse was scratched.
Authorities are investigating why the horse bolted.
It’s the second time this spring a carriage horse has bolted in Charleston.
On April 22, a horse pulling a carriage with three passengers crashed into the City Market. There were no injuries although the passengers had to cling to their seats as the horse ran off.