Aaron Carter's a grown man making responsible, grown-up choices, but he still scored a pretty baller bachelor pad ... with a nice yard for his puppy to boot.
The singer tells TMZ ... Aaron's party has officially moved to Lancaster, California -- he dropped $430k on his first home ... a wise investment for his future and proving he's got his s**t together.
Aaron says he chose a house away from Hollywood and the beaches because he wanted to get more bang for his buck, and his new pad's close to dirt biking and camping sites ... a couple of his favorite activities.
He also scored a spacious yard for his 11-month-old Doberman pinscher, Diamond, to run around.
Aaron's 3-bed, 3-bath pad comes with a backyard pool and a 3-car garage, and with 2,686 sq. ft. ... there's plenty of room to entertain. It was listed by agent Christie Limpus.
As for his bachelor status -- it's a pretty new thing. He and his girlfriend, Lina Valentina, just called it quits last week.