@Soh Tanaka
So my current PITI is $2,226 with a 4.375% rate. If I refi to the 2.875% rate, my expected PITI is $1,957 (savings of $269/mo). There are not many properties rented in my town to compare to, and the few that are available through BP Insights range from $1,300 - $2,400 for a similar sized home (3 bed, 2 bath, 1700 sq ft). Mine is a bit nicer/more updated than these and has a 2 car garage. So to answer your questions:
If I refi and rent: I'd expect to cash flow -$368/month. This is assuming I can rent the property to either a single family for $2400/mo or (3) individuals for $800/mo, and the tenants pay all utilities. I would provide lawn care service est. at $300/mo since I have a little more than 1 acre of mowable land. Other assumptions are 6% repairs, 8.3% vacancy, 6% cap ex, and I will self manage.
If I refi, house hack and rent the other 2 rooms: I'd expect to cash flow -1,330. This is assuming that the other 2 rooms are rented at $800 each and utilities are split equally. This still includes expenses for repairs, vacancy, and cap ex, but I removed lawn care since I would keep doing it myself if I live there.
If I sell: Based on current projections I have about $40k in equity and assuming 6% of sale price for closing costs, I'd make about $20k after selling. If I were to buy I'd be looking to get a multifamily. My goal is to purchase one through direct mail, renovate, refi, live there and rent the other side while I look for my next rental property.
If I do not sell: I plan on starting a direct mail marketing campaign to acquire single family homes to either wholesale or keep as buy/hold and rent, depending on the deal and location.