When analyzing a deal, the expenses data available (opex, vacancy, PM, capex, etc.) is at the time of purchase.

(Ask me how I know this.)You'll be priced out of virtually any quality market as you'll need to put anywhere from 25-40% down if you'd like to cash flow in a deal you don't have to significantly rehab (or found off-market) with interest rates where they're at (and don't expect them to go down to 4% anytime this decade either--a 3-4% interest rate is historically low and investors in the 2010s were lucky and spoiled). 

Many, if not most, want to have this data, but a very high % don't calculate monthly performance.

It has a certain risk, but historically has been low risk.  

Tools like Zillow, Redfin, or even MLS data (if you have access) can help.Good Luck!

:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

Its better to buy assets that will appreciate ( historic ) and be break even or a little negative. 

So here is what I do:1 - Get buyer criteria for what they are looking for (exact criteria)2 - Go source that criteria using data provider3 - Scrub the list and plan a marketing campaign around it (i.e) > Direct Mail > Cold Call > SMS > Online Ads > Social Media, etc4 - Once I get inbound leads coming in.

In todays environment of back to historically normal interest rates and higher home values - now really is not a great time to buy.

@Bijan SabbaghiYou don’t that’s the challenge - we pull data from several places as a note holder and for example and currently we see less than 20% actually going to foreclosure as most are ending in bankruptcy right now due to borrowers equityThe ones that are under water are typically going back to the bank.Best bet is to find properties where deceased or maybe divorced to get higher chance of actually going to foreclosure