For example, this might have suppressed interes rates and benefited mortgage borrowers.

New York also comes to mind as pricing was suppressed for a bit and then as of late it has begun to rise which is getting exaggerated as investors re-enter the market in select areas.This phenom in my opinion is important to keep in the back of your mind as the public may act in an unorthodox manner to some thinking.

FEESApplication Fee (to cover administrative costs)... common in most markets.Move-In Fee (to cover administrative costs)... common in some markets, but not seen in others.Pet Fee (for the privilege of keeping a pet)Guest Fee (a per diem fee for the privilege of allowing a guest to stay past the customary guest period)Notice Service Fee (cost of serving/posting/mailing legal notices related to rental agreement violations)NonSufficient Funds Fee (cost of trying to process an NSF check)Rent Late Fee (violation fee)Utilities Late Fee (violation fee)Unauthorized Pet Fee (violation fee)Unauthorized Occupant Fee (violation fee)Unauthorized Parking Fee (violation fee)Unauthorized Modification Fee (violation fee) - modifying the structure of the property without written consent, includes changing out light fixtures and plumbing fixtures.Unauthorized Installation Fee (violation fee) - includes installation of  telecommunications equipment on the property without written consent.Smoking Fee (violation fee)Smoke/CO Alarm Tampering Fee (violation fee)Fire Suppression Equipment Tampering Fee (violation fee)Door Lock/Window Lock Tampering Fee (violation fee)Garbage Fee (violation fee for cleaning up and disposing of excess garbage)HERE ARE SOME OTHER IDEAS:Property Damage - charge as it occurs or as it is discovered.Special Services - charge as they are provided.

I think a sex offender is less likely to reoffend in their own neighborhood where they are more likely to be recognized and caught, but people don't want to live near them and it could scare off good tenants and suppress resale value. 

Those countries do not pay for fire suppression systems or sufficient fire alarms and security for old, public buildings and they burn down every day like Notra Dame Cathedral in France.

FHA buyers have an almost wholly untapped potential with creative options and was one of the most suppressed avenues the previous two years for acquiring properties.

As soon as rates rise, or more importantly, as soon as the government can no longer "suppress" the rising inflation.

During due diligence I found that in order to make it a 5 unit again, I'd have to file multiple use variances and install automatic fire suppression ( sprinkler systems).

It's almost as if my ad is being suppressed and I'm saying this because for $9.99 a week I'm getting 12x....yes, 1200% more traffic for the same units on Zillow. 

All of the work to suppress noise will be done through the basement by removing sheetrock and then doing whatever is necessary to eliminate noise.