Brrrr in multi residential question

[Victor Kang]

Hello I understand the concept of running the brrrr strategy in single family homes but I am having a rather hard time understanding the strategy in multi family scenarios. For instance, let's say I purchase a 10 unit apartment building at 70% market value. I want to fix up the units to meet the standard market value. How can I do this when the property is occupied? 30-50% occupancy? How will I rehab the property and refinance if the tenants are living in the units? Can someone help answer this question? Thank you so much!