My dad promised me a house—do I give up my apartment?

My dad inherited a house a few years back. He told me that he would give it to me. Since he said this I've kind of been banking on that happening. However, he's been kind of cagey about the whole thing and still hasn't put the house in my name.

I rent an apartment with my partner and we have to let them know if we're going to renew our lease or not in the next month or so. I don't want to renew the lease because I'm hoping that I'm going to be moving into the house this summer.

My dad keeps assuring me that it will happen by the summer. So now I'm kind of stuck. Do I renew my lease or not?