You can count on them doubling if you pay double. 

Not counting the down payment, the closing costs are still ~$8000, plus I have to pay buyer agent commission of about 3% which adds another $3600...It's just a little more than I had expected.

Don’t have a bed/bath count.

Originally posted by @Lee Bell:I would write a check or go get a cashiers check if required.You can'y buy without money.I'm convinced many of you leave comments JUST to boost your post count.

The mortgage broker said we could not count that rental income towards my DTI when i plan to move out and rent, as it would have to be done before i moved.

After finding a property that seemed perfect, my finance guy hit me with some unfortunate news: Turns out, lenders won’t count rental income against the mortgage if the owner lives in the guest house rather than than the main house of a zoned SFH.  

If you feel like you're in over your head, don't count on luck, list it now and get a feel for the takers on this one.

I like the idea - my main advice would be to try to design it to maximize guest count, eg at least 2 vs 1 person comfortably.

do not count on the future. 

If you were to do it, double your projected repairs and certainly don’t count on collecting 100% of the rent.