What does it mean when a man has a spare room and he was never married and all the stiff in it is his moms?

Im engaged yet at my fiances house in manhattan there is no room for a wife. the spare bedroom and all closets and drawere and every nook and crannie are full of her thingsl for moms visits to new york. from California. She has a house in Copiague long island with all her things too. its not very far from the City. what is this all saying . My fiance is 52 and never married.