I have a secure job with an income that would allow me to purchase land/property and make regular monthly repayments.  

It's a unique property for the area with lake access but also on a busy road.

These properties are being offered as a portfolio or on an individual basis, allowing an investor to startegically acquire select assets or gain economics of scale with a portfolio purchase.All assets in the portfolio are uniquely positioned for interior unit upgrades to significantly increase rents and generate high returns.They have undergone 5.7m and 4.7m in recent capital improvements, respectively.

After this time, the owner would have obtained enough equity to refinance and repay the investor.Would appreciate people's thoughts?

All that said, it could make sense for your C-Corp to invest its profits into real estate, however that's typically a unique scenario and beside the norm.

I own two properties, both covered under the same mortgage, but both have unique tax ID numbers.

Obviously this throws everything off and homeowner was completely unaware of this.From the little I have learned, this seems to happen when homeowner get a modification, Hud comes in pays the back payments and then has a sort of silent 2nd mortgage that needs to be re-payed when ever they sale in future.

Look at every house as a unique deal.

How are you planning to repay your investors? 

Excluding your taxes and insurance, there are two things that determine your monthly payment for a given dollar amount borrowed:  Interest rate and length of time to repay the loan.In your current situation, assuming that your interest rate does not change at all, you are simply stretching out the mortgage payments for a new 30 year term.