Buying 2/3 of a house? USDA or other alternatives....

[Kristina Musselman]

My grandparents died a year or so ago and left their house to their three kids. They all own a third of the property, and it's fully paid off. They've been going back and forth on what to do with it because the upkeep costs and taxes are a bit too much for two of them. My grandparents intention for the property was to keep it in the family and would have been extremely disappointed knowing it was sold. 

My dad had approached my husband and I, whom have been considering going from renting to buying, and asked if we'd be interested in buying the 2/3 of the property that he doesn't own. It's a lot nicer and bigger than where we are at now as well as what we could afford if we had to buy alone. It would also be a great way to keep the property in the family, while taking the burden off of my aunts. It would just be my family living there, since my dad and mom have their own home.

My husband and I don't have much for a down payment as we were considering a USDA loan prior to this. So we'd like to get one if possible for this, we meet all the guidelines, I just am not sure if we could get one for just buying part of a property. Does anyone out there know if it's possible? 

Also, if it isn't, what kind of loans would be ones we could get?

thanks!