Admittedly, pricing will often account for any major items, and I don't believe this is true in Sandy Springs, but there are some areas that an interstate cuts off a small part of the neighborhood, and so labeling the neighborhood as "good" may be true for 90% of that neighborhood, but if you are in the 10% that is on the "wrong side" of the interstate, it can be a totally different market.

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

Be wary of front loading on the itemization/draws in the contract. 

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?

Firstly, the real item is only a question of Point of Production.

They also sell items at farmers markets.

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

@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

The rest of the day will be seen as Benchmarking exercises: beaches and good food!

The floor area is to be calculated on the basis of total dwelling unit area.Thank you for making some excellent items to consider going forward.