As I understand it, the one house, since it is an abandoned one, is a liability(at the moment) that is decreasing in value. I recommend turning it into an asset, throwing some money into it and trying to rent it or increase its selling value. Since you already have invested, having an asset that is less susceptible to inflation is what I would prefer. I am highly against all in's (in most cases😉) diversification is a high priority, but please let me know where you disagree or agree with me.