STRs in their current form are simply big hotels, and legislation has been slow to catch up because in their original form they were more conducive to residence (someone crashing on your couch for $39/night).  

However, if new tax legislation is passed, it could extend or change these rules, so keep an eye on any updates. 

Local Legislation: Do you keep a close eye on local regulations, especially around zoning and short-term rentals?

The new legislation makes it illegal for cities to make 400 sqft granny flats illegal.

Further legislation continues to impact residential RE investments.  

Assembly Bill 1771, also known as the California Housing Speculation Act, aims to change real estate tax policy to discourage investors from quickly reselling properties like single-family homes.Under the proposed bill, an additional 25% tax would be imposed on the gain from the sale of a qualified asset (including homes) within three years of the previous sale.The tax reduction is dependent on the number of years passed since the initial purchase of the qualified asset, ranging from a 20% reduction for sales occurring between 3.01 to 4 years to a 100% reduction for sales occurring more than seven years after the initial purchase.The revenues generated by this tax increase would be deposited into the Speculation Recapture Community Reinvestment Fund, which aims to support affordable housing, local governments, schools, and infrastructure projects.The bill is introduced by Assembly Member Ward, and the proposed tax changes would take effect from January 1, 2023.Assembly Member Ward argues that short-term investors in the market, including fix and flip investors, contribute to rising housing prices, limiting opportunities for Californians to purchase homes.While the bill may discourage short-term speculative transactions, it is worth noting that California's tax laws still provide certain advantages for investors, including unlimited tax write-offs and depreciation benefits.The bill is subject to legislative approval, and Assembly Member Ward will speak publicly about the bill at the San Diego County Administration Center on a specified date.Please note that this is a simplified summary of the bill and its potential impact on fix and flip investors.

I strongly believe that legislation should be introduced to prohibit property wholesaling and also prevent double closings unless it can be demonstrated that the property's value has been substantially improved.  

Also:"The issue of how much you can charge as a late rent penalty depends on local and state legislation.

But modern tech and legislation is coming back hard against it so these kids and spammers need to focus more on smaller lists and better personal connections.It's basically become a way of saying how much work you are doing when you aren't accomplishing anything other than making people angry.

Research and understand local legislation in your market regarding STRs, FIRST.2.