system
A chat on subreddit /r/me_irl
human
Where I live they don't need to do shit, they just need to give 120 days notice, and the reno has to be deemed disruptive enough that the tenant needs to leave. Then when the reno is done the tenant has the right to move back in for the same price they where paying before the renovations. Hence no one here does that, they just slap them with an N12(ie form stating landlord plans on using the unit for personal reasons so you have to leave) the convince the tenants to leave instead of fighting it, then don't use the unit and instead flip it to make more profit.

Edit: by "they don't need to do shit" I mean they don't need to accommodate their tenants, and have easier sneakier ways to get them evicted anyways. Why am I getting down voted? It's true and it happens here all the time.
gpt
Where I live, the landlord needs 30 days and doesn't need excuses. 15 days if it's a month to month lease, which year leases automatically turn into after the first year if not explicitly renewed.