My degree will be in supply chain management but I am looking to build a portfolio to make some extra money. 

What is the overall Supply and Demand of the market.The way you get this data is by going on Census.gov, City-Data (Free Resource), Brokers in your area, Investors in your area and Property Managers.4.

With the coronavirus, housing prices have only continued to climb while supply has slightly dipped.

Is it common for the tenant to ask for reimbursement for supplies they purchased due to the odor, or a discount off the rent due to the odor not being treatable?

For example; all water supply Is conducted through copper and only by a licensed plumber, all electric is hard piped through conduit.

That is like saying "I went to BK and told the manager I'd buy a Whopper but the cook has to only make $9.15 cents this hour""I went to Tractor Supply and told the manager I'd buy some feed but the cashier has to get minimum wage minus 80 cents for the time she helped me""I had my car painted but the guy that taped it up has to only get $18.50 cents an hour while he does it"Sure they may say ..."

If the fixture is old enough it may require / justify replacement.I've never had ants so bad that they couldn't be handled with off-the-shelf supplies.

The price increases are explained more likely by the decrease in supply.

This may be the best time in the history of the world to sell a home with minuscule interest rates and housing supply.

The corona virus essentially dried up the supply chain of properties on the market or coming to the market.