If it is a 4 person LLC that the member with over 21% ownership may qualify to be the only PG. 

I believe I can qualify for the HELOC on my own, saving my wife with additional debt ( when used) on her credit.Is there anything to think about if I apply to the HELOC solo?

You could possibly explore a bridge loan up to 75% LTV if your credit doesn't qualify for 75% 30 year loans.

Investment Info:Single-family residence other investment.

Right now we have it split based on the square footage of our residences. 

Another option would be to use the Section 121 exclusion for your personal residence.

That's missing the forest for the trees, but you do need to manage cash flow because if you're buying conventional you'll come across DTI issues soon and if you're buying nonQM it needs to be 1:1 ratio at minimum to be qualified without unfavorable terms. 

Hello everyone im a newby, this is my second investment property.I’m using a heloc from my primary residence to buy an investment property for $145k and I’ll use my own cash for the $15k in renovations.

Quote from @Donald Hatter: Pros:- Builders have many homes to sell at one time so it is easier to negotiate a better deal than with a home owner in the same neighborhood who is trying to sell their primary residence - Buyers bust out of deals all the time and builders don't like holding completed homes- Lower maintenance which leads to easier property management expenses.  

There are a ton of qualified broker and lenders out there that can offer this product but be sure to receive the proper education when iyb comes to structuring the deal correctly.