It's the only Tannen in the book, but I don't think this is Biff's house. It looks like some old lady lives here.
5 seconds sound clip from the Back to the Future Part II movie soundboard.
You can hear this line at 01:04:11.440 in the Blu-ray version of the movie.
Quote context
[...]
- Get yourself some '50s clothes.
- Doc. Come in, Doc. This is Marty. Over.
- Roger, Marty. This is Doc. Are you there?
- Yeah, Doc. I'm at the address.
- Biff!
- Yeah.
- I'm going to get my car, Grandma.
- When are you coming back? My feet hurt, and I want you to rub my toes some more.
- What ball are you talking about?
[...]