California Rental Agreement Requires two original copies?

[STEPHEN YUAN]

I heard from my housemate's mom saying that California's law requires the renter and the land lord to sign two copies of the lease agreement, one for the renter and the other for the landlord, otherwise the agreement is voided. 

Is that true? I've never heard of that before and I don't think that's true. 

[Kyle J.]

Not true.  The landlord is required to send the tenant a copy of the lease within 15 days of it being executed by the tenant, but even if they don't it doesn't invalidate the entire lease.  The landlord should provide the tenant a copy of the lease though.  After all, you want your tenant to know what it says and abide by it.