You may wanna get that checked out. 

I am trying to decide whether or not I should go through a traditional bank (JPM), a morgage broker, or try and find a credit union.

What made you interested in investing in this type of deal?

Why risk $50k on a "maybe 5%" return when you can get 4.3% on a CD? 

Anybody will charge you whatever you like if they know you're not familiar with crawl spaces, which is completely understandable. 

Congratulations on this investment @Michelle Nguyen ! 

This is for vacant land located in Tampa, Fl.

Seems like this is mostly for tear out which is the easy part.

These are the keywords that stand out to me in your question:sources, websites, best deals, systems, step by step, factors.You are focused on all of the wrong things.

@Carl TrubLots of legal and tax implications - you should look at having them put the home in a living trust.I am not an attorney but there are ways to make it so your cost basis is today's value versus a lower value such as if you buy it at a low cost.