If you are experienced you can represent yourself on buying and selling. 

Better to buy now before rates go down, price go up even more and crazy bidding wars return. 

@Seo Hui Hanthat's just the BRRRR strategy, and using borrowed money for the buy.it's just about risk.low risk: buying with actual cash, from your own checking account. 

I’m considering buying a duplex and renting out one half while my girlfriend and I attend college.

Simply put, there are a lot more co-hosts/managers like myself and yourself who got started self-managing their own properties around covid and are now afraid or unwilling to buy new properties at current prices/rates, but want to use their knowledge/experience to keep increasing income in the space. 

Investment Info:Condo buy & hold investment in Phillips Ranch.

I'm looking mostly for if I buy a 4-unit quadplex (example, or Triplex), how to calculate NOI, Monthly Cash Flow, Rehab, Cap Rate, Cash-on-Cash, etc.For example, whenever I find a property on Crexi, Loopnet, MLS, etc. the NOI sounds good but when you factor in mortgage to get the cash flow, it's almost always negative.I also don't know how to properly calculate a rehab to see ARV so that may be the other issue.

Investment Info:Single-family residence buy & hold investment.

Don't buy just because of the numbers.

If there is little profit, who would want to build/buy new units?