The singer from Next is being sued for allegedly being a deadbeat tenant.
TMZ has obtained a copy of a lawsuit in which Raphael Brown is being hauled to court by his landlord, claiming the singer is late on 5 months of rent.
To be exact, the landlord says she's owed $48,000 in back rent.
BTW ... the crib is a palatial estate in Encino, which vaguely resembles a castle ... although it's not in the Alps. It's in the San Fernando Valley.
Brown is still living in the house. The landlord is also trying to get a court order to evict him.