Unbuilt lots in those areas usually have issues that kept them unbuilt.
Now if you’re talking about a teardown, that’s different.
Honestly I would drop the idea of developing something unless you are well financed and willing and able to devote 20+ hours a week to it.
I know two incidents personally in San Diego where amateur housing development was a financial disaster.
In general, in business, the successful founders learned their industry as employees of prior successes first. True in my case and industry and many others.
