How many of those government, (none military) jobs (including contractors) own homes with a mortgage on it in the D.C.

Quote from @Brendan Jones: I am very new to learning about real estate and am looking for advice on my first home and how I can best use it to help offset my mortgage and generate cash flow.

Notice that the next lines 7b and 19b are for actual Mortgage Loans.

It is a duplex near scranton PA. the Mortgage is about $2,400 and each tenant pays $1,550 monthly in rent so I make about $700 in cash flow monthly.

You might find the answers to your questions there but I know that the search function is less then optimal so feel free to send me a DM if you don't easily find what you're looking for.I've never bothered commenting much about Canada because, until recently, it made no sense for US investors to invest in Canada: much less favorable mortgage conditions if they could even get one, much more expensive prices on average and much less profitable on average.

If your willing to do so, you can live in the casita and then rent out the main home and have your tenant pay the majority/all of the mortgage (depending on what type of deal you find obviously). 

If the number of rental exceeds the FHA standard then nobody can get a new FHA, owner occupant mortgage. 

               $215K @ 2.65% rate to be paid offRental in area -                I can rent this for $2600/month and it will give $500 cash flow after mortgage and HOA.              

Also, credit score minimums are higher- often requiring a middle mortgage FICO score of 720 and above.

Keep primary mortgage @2.9%, paying the minimum.