Theres more active legit hip hop clubs in SF/Oakland now than ever before (since i been alive, going on 30).
Sf:
Holy Cow (open thurs-saturday, cracking down on crowd though due to recent shooting)
The Roc
The Grand
Origin
Hue
Empire Room(more asian heavy crowd, but still all hip hop)
Infusion (open weds-Saturday, industry hip hop nights weds/thursday, better on Thursday)
2nd floor of Temple (top floor on Thursday, industry night)
Balancore
Harlot (Sunday night only, some Wednesday)
The End Up(sundaze / sunday day party)
All play hip hop every Friday and Saturday night