Hey everyone - I am new to BP and looking to purchase my first BRRRR in 2020. Multi Fam.

Couple questions:

1.)  Most of the listings coming on the market have tenants already.  For those who have experience investing - If/when its time to rehab, what have you done with the current tenants? Several have good/long term tenants so ideally would like to keep them in there. 

2.) When finding comparable properties to come up with ARV, have you found only comparing Multi Fam units or do you also use SFR?

Thanks in advance