I have a few rental 30 products.  

Was just setting up a LOC with an investment lender when things with the pandemic put a halt to the product that was being offered.

Get in tune with your buyers and get searching for product (properties).  

Then refi out of the FHA, lowering your mortgage payment.Last thing to consider is a non-FHA low-down payment product.

But, one thing they won't result in is lots of what people often refer to as "affordable" housing - these projects are still expensive to build, and they still need market per sf rent rates in excess of current market product to make financial sense. 

Purchase price: $15,250,000 Cash invested: $60,000 184 unit, stabilized Class B assetValue add focused on amenities and interiors What made you interested in investing in this type of deal?

I wouldn't personally use a HELOC for long term debt, I would use it as an acquisition (bridge financing) tool and then refinance once stabilized to get better and longer terms. 

If you head over to the Loans, Mortgages, Credit line forums here in Bigger Pockets, you will likely get a lot of help in various products available.

If the house is stabilized on one side, you might get cracks in the other side soon after.

Coincidentally its the least productive property of my portfolio.