Some came from liquidating money from the stock market and retirement accounts for one of the properties. 

Is it smart to have your job, all your real estate, stocks and everything in one single country and at the whim of a single government?

Given the recent chaos in the stock market, I was wondering what is the biggest threat to the real estate market?

For my money, I think Home Depot has a slight advantage in availability of in-stock door sizes/styles (which you can check online to find your exact style/size/swing and see which locations have it in stock), while Menards has a wider range of trim options.LVP Flooring. 

@Jay Hinrichs check out Fannie Mae's stock price.

"Companies", dang predictive text ...

It’s March 20, 2020, and you have been stuck at home for about a week now and have been meticulously studying the stock market.

Also, do any of your funds (after accounting for the above) ever go into a money market or other interest bearing accounts, such as dividend stocks, etc?

More realistically, if there's a veteran willing to give up re-using their VA loan entitlement amount in exchange for top dollar on the sales price, that's for the listing agent to proactively put in the listing description, and have a stock flier/email to send back when inquiring buyers/agents ask.

. - Older housing stock in some areas may require more upkeep. - Strict local regulations can also sometimes increase compliance-related maintenance costsCost-saving strategies I've seen help:- Preventative maintenance programs can help reduce overall costs obviously - Some investors report success with in-house maintenance teams for larger portfolios- Energy-efficient upgrades can help reduce utility costs in the long runYour specific costs will depend on factors like the age and condition of your properties, your management style, and the specific neighborhoods you're invested in, but hope this helps!