If you're new to real estate or have been sitting on the sideline for a while then I could see incorrect assumptions impacting projects.I found some old draw schedules for 1200 SF rehabs I completed in Philadelphia in 2015.

You might be able to reduce taxes by switching to an S-Corp, but that decision isn’t one-size-fits-all.

If there are notice requirements, it's often prudent to begin those steps as a precaution but if this is a tenant you believe will catch up once their employment payment freeze ends it's important to communicate your desire for the tenant to stay so they don't interpret the notice incorrectly or completely shut down on you. 

Any suggestions or what you use to analyze your deals (Mainly rental especially multifamily but I was building my own spreadsheet from others to get inspired by designs and possible missed/incorrect data) I have found https://www.etsy.com/listing/1543461345/get-full-package-cas... recommended by reddit.

The vanilla advice on BP is to trust your numbers, but if that's your ONLY criteria, it will lead to really stupid decisions.

They should also do the upgrades you recommended, but saying that $1800 is top of the market is incorrect.

let people to make decision the better and constantly keep budget v rent/sell.

In regards to the two items you noted:1) The unilateral decisions referenced was an open question for a member of the community hopefully with a legal background to opine because I said I did not have one. 2) The comment regarding "closer to a ponzi scheme" is in reference to the practice of claiming positive financial leverage on loans that have an interest rate falsely giving the illusion of positive leverage because interest has been prepaid either through a buydown or a lower than market interest rate cap.

Did we do anything incorrectly regarding the three day notice? 

Properties I looked at 3 months ago showing up 30- 40% less and I own properties in these neighborhoods so I know the recent lower revenue estimates are incorrect so glad to hear this is a glitch AirDNA is aware of and working to fix.