Alternatively, are there some ballpark estimates for each expense item (e.g., 8% for vacancy, 3% for capex, etc.) that can be factored in as realistic or worst case scenarios when analyzing the deal?

This item is one of the more requested items to have in our house.

Now for the house you are leaving behind…I like to have this one freshly painted, and take action on any maintenance items.  

They also sell items at farmers markets.

@Francisco PineiroYou could call a few home inspectors in the market you are investing in and see if they do draw inspections so you know the items are correctly done before sending funds

We removed a chimney to open up the space and updated all the major ticket items—new electrical, HVAC, and roof.

If we need customized items, like a Leasehold DOT on an airplane hangar portfolio, then we (borrower) pay extra. 

1) Not blown money on cars, luxuries items, CC2) House hacked a 2-4 unit.

My wife and I used to do flips in this area, and I have a couple listings along with long term rentals I manage in the area..For the co-host, they typically do not handle permitting and other items like that (this can be agreed upon between you and the co-host.

Brick v.s siding and covered v.s no converted parking also make a large difference and are items that have to be adjusted for.