@Cody Evans thanks for the advice! The numbers are based on a specific property that I was interested in but got bought out. I ran the numbers just for practice just to get use to analyzing deals. The garbage amount came directly from the city and confirmed by other biggerpockets members; the insurance estimates were derived from the bank spreadsheet, which I know I could get even more specific just by calling the insurance company. The property taxes are general, but I called and inquired what the current tax rate is from the Assessment office and can now easily determine what the property taxes are for a particular property. The meters are a great point and something worth looking into as well as the particular laws associated with some of the expenses.
Very good point regarding the 203k. I know that many lenders, especially for first-time homebuyers, will purposefully have the homebuyer set aside money for unexpected repairs so that they're not running into that issue. It's called a contingency reserve and is usually a minimum of 10% of the cost of rehabilitation. Still, other precautions must be taken.
As of late, I have been extreeemely obsessive over accounting for everything properly. When I come across a deal I will for sure post it (without the address). Thanks, again!