Questions I have is if it makes sense from an ROI standpoint, as my several pro forma calculators don't really factor in these 'family' variables with what my Dad is proposing:Here's the scenario: Purchase duplex of $350k - $400k.

(Freddie Mac takes aim at FHA with widespread expansion of 3% down mortgages - New HomeOne mortgage has no geographic or income restrictions April 26, 2018) If they have good credit and their income otherwise 'makes sense' relative to income level, and the new job is full time and not 'provisional' or anything like that, this is probably going to be the best route forward. 

I have yet seen a SFH investment that makes sense with I account for those expenses in my area.

., Seattle, so from running a business perspective it makes more sense to have the 2nd one close to east coast.

My primary residence here in Lake Oswego is the question.turns out one of my projects got harpooned by the City of Lake Oswego and the cost to split the estate lot in two just does not make sense..

I guess that makes sense. 

@Demario Scott If you are/have been in the military it makes more sense to use VA on a multifamily over conventional or FHA. 0% down payment and no mortgage insurance on up to 4 units.

I didn't know what they were, but looked them up and found out that they come filled with nitrous oxide and are called "whippits" which you can inhale to get high (and just a bit of brain damage, which now makes total sense given his behavior). 

Since this is your first purchase, it might make sense to suck up the cost and engage a buyer's agent to guide you through the purchasing process.  

@Ciara Coleman It definitely makes sense that it would be difficult to move around a lot with work and a young son.