A grass fire spread into a vacant house off of Railroad Avenue Friday. Redding Firefighters were called to Laurel Avenue for a vegetation fire late Friday morning. The fire in the dry weeds was quickly extinguished, though it burned up a wood fence as well. As crews were mopping up they found that the fire had crept into a house, according to Redding Fire Battalion Chief Will Francis. It's not known how long the house has been unoccupied. Laurel Avenue was closed for a few hours. The cause of the fire is undetermined.