I'm looking for a new lender for this HELOC product and I see this as the only solution if I'm going to keep my low-rate, first position mortgage intact.

Thx Bruce, Sorry, not sure how the 2% interest rate idea snuck in there.

If you give them $1M and you collect $100k in interest, that interest is taxed at ordinary income rates.

Do you have a general idea of the interest rate on the HELOC either for your primary house of investment properties that you could get?

The higher your credit, the better rate you will receive on your loan.

High volume discounts are available to everyone, irrelevant of deal type, with me.  

I just sold a duplex for $520,000 in four days, even though the current income is $1800/month and the market rate is only $3,000/month.

Generally there are three categories of multifamily investment properties – which will greatly determine your loan options.These three categories are based on the number of units at the property.2-4 Units: While these are “multifamily” properties in the sense that there are “multiple units” – you will generally have very similar options for financing to traditional residential loans on single family rentals – think the traditional 30-year fixed rate conventional option or DSCR Loans – and the coveted 20% down payment option too.

My only challenge would be the occupancy rate.

Here's a bit more in detail about how rates are calculated for DSCR loans:1.