Generally speaking, per the NYC Zoning regulations, a R4B is limited to a maximum of 2-family homes.

I keep telling my fellow US investors how spoiled the are every time they start complaining about something (taxes, fees, regulations, rent, compliance, etc.) in the USA market ;-) Try making it in Europe and you'll need to toughen up by bringing along more time, patience and expect less yield.

Depending on the purpse of the BPO and regulations in your state, you can just call a broker that you like and have them give you a BPO. 

We have seen a general drop an overall short term rentals mainly due to regulation.

Purpose of the Leasing Management Program The primary purpose of the Leasing Management Program is to regulate and monitor leasing activities within the community. 

San Diego is expensive to Purchase, maintenance and cap ex is expensive, property tax at purchase is expensive in terms of dollars (average SFH prop tax at purchase is ~$1k/month in San Diego), new retail (MLS) purchases are negative cash flow when allocating properly for expenses, it is tenant friendly in terms of regulations but this is largely due to the big advantages LL have due to crazy low vacancy rates.  

Understand the demand, seasonal trends, local regulations, and competition in the area.

In other words, these sources claim that you can't buy a property solely for investment purposes (like renting it out) without living in it yourself.Is anyone familiar with this law or regulation?

Trump did the same thing.At least, there's some regulation with the high yield debt (regulated by the SEC).

For older demographics, consider the availability of medical centers, entertainment, and restaurants.Buildings/Permits: Assess the city's growth compared to previous years.Determine if the city can accommodate future supply.Government Regulations: Examine the city's efforts and the type of businesses they are targeting.