The issue is, I'm not sure if my income will be enough to cover 2x the monthly mortgage payment that most loans require.

So what if the heloc amount is enough to cover 20% down on investment property and cover renovations.

In the case where those assets did not cover the costs for the line, would that lender also have a clawback clause that allows them to claw at other assets?

The above also doesn't cover the dozen times I asked via email and phone for more regular communication.

There may be requirements to cover the trash service depending on the town.My first commercial loan was 30% down, 20 year term (adjusting after the first 5 years). 

I have a buddy that has been doing flips for a few years and he now has investors approach him asking to get in on his flips so he lets them cover the down payment/entry fee's for 30% return on their money.

One important detail is that my brother currently lives with us, and we are open to having him stay with us if we do make a purchase as a renter to help cover our mortgage.I see our main options as the following:1) Buying an SFDU to live in, and "house hack" with my brother continuing to live with us and pay rent2) House hacking with MFDU.

Does he not cover that yet?

If the rent payment covers your mortgage and you have a good tenant, why would you get rid of them to take on the expense of unit turnover, because you will have to do one, and the 5% vacancy loss just to increase your rent $150 per month?

He had this ambitious flip lined up and decided to tap into a 0% business card deal to cover the rehab costs.