The other option is to provide me: signed bylaws and all amendments thereto, a list of the current stockholders and their respective stock ownership, a list of directors and officers of the corporation.

Flip or BRRR using hard money seems like solid options.

Another option you can invest is through self-directed Roth IRA.

I have tacked on the difference to her March rent with no other option besides paying in full. 

Loan assumption isn't an option here.

I'm currently weighing my options between using cash from my HELOC or getting a private money loan for the purchase and rehab of a property.

My options are:Sell: Maximize down payment in NC, reduce debt.HELOC+Rent: Keep NJ property as an investment, rent for potential $3,300/month.I'm interested in long-term wealth building.

multiple purchase options: MLS, off market, auctions, FSBO, short sales, etc.  

Some of the more eco-friendly options can put out significantly less...

Here are the details:Assumable loan balance: $750k at 2.75%List price: $950kDownpayment needed: $200k to cover the differenceMy initial plan to make this deal work included a few options:Getting a loan for the $200k difference.Bringing in a partner.Asking for seller financing.However, when I discussed these options with my agent, I hit a few roadblocks:Second Mortgage: My agent said no bank would provide a second position loan for the $200k.Seller Financing: He mentioned that 99% of sellers would reject this, though we're asking anyway.Agent's Advice: He suggested I just get a conventional loan and put 5% down for the full $950k, but I feel this defeats the purpose of leveraging the assumable loan.Given these challenges, I’m trying to figure out the best way to raise the $200k.