San Francisco - Parking close to Holiday Inn Sfo Airport North and Marriott SFO

I'll be staying in these hotels during my North Cal trip, and I'm not so keen on paying for parking (marriott charges $20+tax for parking) for places that are not in downtown. Does anyone know if it's possible to park on a side street close to the hotels?

Thanks in advance.

As for the Marriot at SFO, there are side streets near the hotel where you can park. It is mostly an industrial area with wharehouses. Just be sure to look at the street signs to see when they will be cleaning. Otherwise, you will get a nice ticket. It is a pretty safe area.

Thanks a lot for the help!