Am I Overestimating Expenses in my Analysis?

[Jason Scharf]

Each time I analyze a property in the Rental Property Calculator here on BiggerPockets, I always assume 10% across the board for expenses like Repairs/Cap-Ex/Vacancy/Management regardless of the shape the property is in. While my goal is to House-Hack and take a crack at Land-lording without Property Management in the beginning, I still like to factor it in my analysis in case I move someday before I sell. The only problem is, using 10% across the board literally knocks out almost 100% of the properties I've analyzed. I just hope I'm not missing out on opportunities because I'm being "too" conservative in my numbers. Any comments on this?