How much does a house cost?

I’m running my players through the Lost Mines of Phandelver starter campaign and the fighter character with an aversion to low standard living arrangements is interested in buying a local home that she could be comfortable in on their downtime. I have searched through the Player’s Handbook and DM Guide and I cannot find anything about what kind of price range a simple house would cost. The closest I have found are some of the ships players could buy.

Am I missing something and one of the books has a starting point? Or is there perhaps something in the greater D&D materials I could use as a base guide?