Greetings,I am a new investor in South Carolina and I am looking to use the equity on my primary residence as Capital to fund my investments such as flipping or rehabbing or even short-term rental properties. It's no...

The suggestion of transferring the property to an Corp sounds like it wouldn't help in this situation.A lender will not give the ability for an officer of a corporation where he/she has no profit interest to take capital for lending purposes.If there is no mortgage, your brother can consider doing a cash-out refinance.

Most of these loans are also only 6-12 months before you have to sell or refinance.

If you were going to sell...then you would be getting your money back anyway and you wouldn't have enough time to justify paying those refinance fees.  

I am stuck because should I fully renovate my house now and re finance and pull the equity out or just do a heloc and remodel and re finance the residence down the road?

I've bought two 4 unit buildings using conventional financing, and used conventional to refinance a seller note on another 4 unit.Are you using a local bank?

Get about 10% or better interest rate.That encourages them to pay it off earlier or refinance the note.

Borrow against your 401k, ask friends/family to borrow the money, get a HELOC/refinance your home, and look into seller financing (rare these days). 

The longer I were planning to hold it, the more likely I would be to do the refinance.

Once you are the owner, you can choose to refinance or obtain a HELOC.