Rent by the room or setting up a SFR to function as a MF are a couple options that will increase your income, allowing for cash flow after refi in the pricier areas. 

He said landlords do not serve any useful function in society. 

It would mean any house built before 2006 would not have any water coverage unless you spend 10k+ replacing perfectly functional piping.

Also ,if we want to objectively looking at how good this particular rental sector is , just look at stock performance for SFR REIT such as INVH and AMH (they have the largest market cap rate), their stock has returned to pre-covid level ( haven't checked their distribution though).

This sounds like a fictitious example.The cities with the largest long term rent increases in absolute and relative terms (i.e., $ per year and % per year) are those with the strongest rent board regulations.  

I am 22 years old working as a marketing and sales representative for one of the worlds largest power tool manufacturers.

Hmm, maybe local appraisal district is better than I give them credit for.In the past 7 years of me owning the property their valuation always has been a function of how full the property is.That is, on the face-to-face meeting, not on the standard forms they send to everyone.

Yet, I would say the Air Force base north of town has the largest financial impact. 

On the inspection, there were electrical issues, garage roof is close to needing replacement, 5 years on the house roof, appliances are old, including one furnace and water heater, no water softener, windows are old, old chimney, garage doors need repair, baths/kitchens are outdated, but still functional, could use better sloping for the drive/yard, and this list isn't all inclusive. 

On the inspection, there were electrical issues, garage roof is close to needing replacement, 5 years on the house roof, appliances are old, including one furnace and water heater, no water softener, windows are old, old chimney, garage doors need repair, baths/kitchens are outdated, but still functional, could use better sloping for the drive/yard, and this list isn't all inclusive.