I'd like to access this equity through a Home Equity Loan (HEL) and use it to make downpayment on another investment property purchase (12 unit bldg).I bought this 4-plex in my personal name with a conventional mortgage .

We are brand new to real estate investing and are not sure how to go about this deal.

You don't hear much about this anymore.   

This will give you both enough information to get started.https://www.epa.gov/mold/brief-guide-mold-moisture-and-your-...

The goal is to rent out the lots to people who own trailers. 

Are rentals a good idea in this area?

There are a few options out there, but not many. 

While this term might sound like a positive development, it is essentially a rebranding of the traditional "Price Reduction."

It impacts the outprice and comes down to your market data searching out areas to flip.

This is a simple solution and there a ton of these programs out there.