Who’s responsibility is it to ensure functionality?

They don't always function entirely right so you have to be ready to step in should anything start going wonky.

then minus your taxes, insurance, vacancy, etc etc.... everything except your Principal and Interest (loan cost).After you do all that subtraction, what you have left is what you have to service the loan (let's say $350)You can use Excel's PV function to figure out what your offer looks like.Using 5.5% interest rate (expressed as .055/12), over 30 years (360 months or "periods"), and with $350 month gives you an offer of 61,642.62.

Check out the XIRR function in excel. 

You will start to learn of increased opportunities to invest your money and use your money to generate more money.Some of the most basic concepts that I personally find super important is to always set aside the largest percentage possible of all your incoming money.

I've seen nice graded maps for other cities so I am hoping to check out one for the 3rd largest city in the US.https://www.google.com/maps/d/viewer?

My wife and I travel  to Europe twice a year -- this is our largest entertainment expense.

@Sanjoy V. property taxes are always the largest expense of owning the property and should be managed like every expense.

It's a very common LTV, but it's definitely not always5. yes, the bank is going to look at your capacity to repay as a function of what's on your tax returns6. 6 month seasoning is standard but can be much faster if you use delayed finance (which can be complicated).

Grew it from $500 to the largest party rental company in my area.