HOA fees for a condo can be expensive that hurt your bottom line.

Condos in the are I am looking are less expensive than single family home (even with the same square footage) but I noticed they do not appreciate as much over time. 

It looks like you realize how expensive it is to build in DC. 

As long as your credit is good you, if your HELOC rates go up, you should be able to rinse/repeat that "0% balance transfer" option every couple years until the debt is paid off.There are alternatives out there as wellLoan on your 401k or IRALoan on your stock accountDown payment assistance programs that provide all or some of the downpayment money.

The tenant pays all of the expenses while you invest your money other places.

Many investors from expensive markets, are choosing to invest in the midwest because of the yearly returns making more sense in these lower priced markets.

Get the best possible location you can afford and let your guests subsidize your living expenses. 

Cash flow - If your property, on average made you $200/mon, over the course of 30 yrs they tenant would have paid you $72,000.To sum it up CF $72,000 + Mortgage $1,000,000 + Appreciation $1,000,000 = $2,072,000.

Which means, you are paying too much and barely covering your expenses. 

The question I have is when Customizing your estimate on expenses in AirDNA.