If San Diego does not pass anti STR regulations, you still have to worry about the state. 

Very anti-social behavior.

You cannot deny the family because of the lead paint either, that's considered discrimination (you're refusing them because they have a kid) and is against the anti-discrimination laws of the state.

New Jersey is an Anti-Eviction state.

The only way I’d change my mind if I started investing in D-class neighborhoods or possibly Chicago or similar cities that seem to be anti-landlord and have laws discouraging the use of security deposits.

@Ednilson Silva https://www.linkedin.com/pulse/nys-anti-speculation-law-another-robin-hood-bill-scott-wolfMy apologies for not including it in the initial post.

Due to money laundering and anti-terrorism laws Banks will require a personal visit to set up a business account.

The unit is one of the units we allow pets (we allow pets in units with its own yard charging extra deposit and pet rent - We are not anti animal, we are anti animal in units where having animals can negatively impact our other tenants and believe those with service animals should find animal appropriate units) because it has its own OK size yard (it is small by standards outside of areas like San Diego but decent size for a San Diego rental yard). 

Around 2 years ago the city council passed some anti STR regulations that mostly could only be overcome by living on the property. 

It generally depends on the neighborhood if you'll be granted the variance, some neighborhoods have become quite anti-development and others, if your request is reasonable, you're likely to get it.