If you could share insights on the market, it would be greatly appreciated! 

I have homeowner's/hazard insurance on the property through my mortgage, but I do not have any additional landlord insurance or other coverages.  

thanks Paul I appreciate the insight, I was looking at the Scranton area, how are the rents in that area compared to say allentown

I have friends in CA who converted their two-car garage into an apartment and used it for additional income.

I am a first time real estate investor looking the following property : https://www.redfin.com/OR/Forest-Grove/2418-Cedar-Cir-97116/...its a pretty large duplex in Forest Grove OR,  the trick is though, its on a lot zoned for a 4 plex so I am lookinginto house hacking, converting into a triplex, then living in one unit while renting out the remaining two unitsThe left garage has been converted to living space, with a living room, half bath, a laundry room with a sink and some counters/cupboards and a bedroom, it is a part of what was an existing 3bd unitIf I were to acquire the asset, I would first attempt to convert that space into its own unit The line items as I see (be in mind, I am totally new to this) would be to >put up dry wall where the door to the rest of the house is,>add a shower to the half bathroom >install a water heater in the adjacent 3bd unit> install a kitchen in the laundry room, (stove , oven , sink, counter space)>add a shower to the half bath Assuming I can convert it to a 3plex, I could at-least cash flow on my investment after I leave My plan would be to put minimum down payment of 3.5% (FHA loan) that way I can have a decent amount of capital free to do the renovationsThe only concern is when I crunch the numbers to get my ROI, I have no idea how much its going to cost to convert the additional living space to a third unitAny experienced investors here know how I can estimate this before I try to make an offer?

Addition costs for staging.  

This isn't always as simple as it sounds, but could provide some additional insight.

Making connections in the community may lead to business opportunities and offer insightful information about the local market.Look into internet platforms where properties could be listed in addition to more conventional approaches.

The additional income from the ADUs will easily cover the cost of the loan and produce really solid cashflow.

Making connections with experts and investors in the area might yield insightful information about the local market.