There's been a second fire in the heart of Gosford in as many nights.
The old Froggy's building on Mann Street was found well alight around midnight.
Fire and Rescue NSW crews managed to extinguish the inferno with reports a large pile of building material was burning within the premises.
It's not clear what sparked the blaze.
Yesterday crews worked to douse a fire in an abandoned building in William Street.
It's understood both buildings are often used by squatters, with the ABC reporting council has been notified on several occasions.
The Froggys site is set to be demolished to make way for a $200 million hotel and entertainment complex, and the architect has previously criticised homeless people for hindering efforts to demolish it.