This is the house that Naomi moves into in the season four episode "Up in Smoke"
2458 Horse Shoe Canyon Rd, Los Angeles CA
Note: This address is just a guess. I can't find address info anywhere. But if you stroll up to this secluded neighborhood, look for the rather large white house that looks like the one you saw on the show that you probably can't see from the road. That will be the correct house.