If they pass a strict grandfather rule where any sale loses their right to STR, the buyer may still face problems (which is also a part of their due diligence, but I would be honest upfront).

I was under the impression that this regulation only applied to Cleveland homes.

Quick summary: A Phase I ESA gives you the "Innocent Landowner Defense" protection under federal Superfund regulations.

One that has strict STR permitting with exceptions for owner occupants would be a bonus.

If you can't get the residents out that are not paying, then nothing will help.I would hire an attorney that deals strictly with evictions and start issuing eviction notices to anyone who has broken the laws of their lease.

And in condos, you can't differentiate so much with the other units in terms of amenities you offer.3) Regulations: first zoning need to allow STR, then the second step (if condo), is the HOA.

Whether you're a new investor or looking to scale your portfolio, qualifying for traditional loans can be a challenge—especially if your personal income doesn’t meet the strict requirements.That’s where Debt Service Coverage Ratio (DSCR) loans come in as a game-changing solution for real estate investors, providing an easier way to finance properties based on the property's cash flow rather than your personal income.What is a DSCR Loan in Real Estate Investing?

Affordable housing is not something that they have any say in, as it is regulated by the particular state.  

Alternatively, rent regulated tenants can also file a rent reduction complaint with DHCR.

@Anibal Mijangos - Rental arbitrage is a great business wherever you can find below-market rental units and favorable STR regulations in strong Airbnb markets.