Additional features include washer/dryer hookups, sundeck balconies, and a detached carport for parking.

There are limits to how much you can borrow in a 401k, its usually 50% of your vested balance, and I think the current rules cap it at $50,000 borrow-able, so once you have passed $100,000 in the account you really can't borrow more off it.  

Just to clarify, in the absolute simplest form, cap rate essential means % return on investment per year.

I don’t have anything going toward cap x or anything like that right now, but all the major things have been done within the last 10 years, with the furnace, water heater, and roof done within the last 3 years.

@Jeremy Benson $1600 + $1490 (inherited tenant) = $3090.I put 25% down on the property with 4% interest which brings monthly mortgage ~$2300 after vacancy, cap ex, maintenance i guess i can calculate $400 ~$500 per month cash flow

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You could calculate cap rate as they do for 5 units & up.

All recommended flashings/metal caps were installed/present and sealants reassed and looking good.

Locating what appears to be deals on the popular websites, but when I start on the numbers I get the discouraging brain numb. 8 Cap & 12% Cash on cash.

Owner says "I look at this as an investment property and base values off 6.25 cap rate."