Estimating rehab costs in deal analysis

[Parker Chrisman]

Good evening Bigger Pockets folks,

My first post on here so apologies if this has been covered elsewhere. I'm currently going through and analyzing some deals and hoping to make some offers in the next week. When doing my numbers in the early stages, how do you determine how much to account for in rehab costs if you haven't even seen the property yet? Is it just simply going off of pictures and accounting for cosmetic fixes? Any advice would be appreciated.

Thank you