So rates should - in the medium term - still be rock bottom.What you SHOULD be doing, if you missed out because you needed to "think about it," is apply for a refinance with your favorite in-state loan originator (I'm California only, sorry folks in Nebraska!)

However, if you need anonymity and use a nominee or other obfuscation methods, you may not be able to do it yourself as you may have to use a third party.

My favorite way to collect property is to buy as an owner occupant and then move a year later and do it again. 

Learn to interpret data, rather than accepting the interpretation (opinion) of someone else.This is a great source (biased and opinion based)This is great for those of you who like to get really gritty and detailed in your data, projections, and sources.Approachable data regarding all things OKC.My favorite video on how the economy works.Ray Dalio’s projections based on the above template

Are there cleaning protocols/check lists/new practices and methods for cleaning an apartment before renting it out now that we have a covid-19 pandemic?

You either have to go out a litte further, 2-3 miles to try and find comps, or try another valuation method like price per square foot average in the area to get a ballpark.

So interest rates are tanking so I was about to refinance and take cashout from some properties.But, speaking with my accountant, I found out that interest on the refi will not be tax deductible because I am not planning to improve the property.So this mean that BRRRR method is no longer a good method at least from tax deduction point?

I think all of those methods are ideal for what you want to do, just make sure you are targeting your ideal investor (demographics, age, etc).  

The issue sounds like with the delivery method chosen, since it prevented the check getting there in time. 

Purchase price: $365,000 Cash invested: $20,000 An apartment in my primary residence.Upgraded when purchased to command the highest rent possible.Looking to expand to other buy and hold rentals in the Long Island area, possibly with the BRRRR method.