bungalow; one-story house
「平家」 has another reading with different meanings.
Heike family; Taira family
祖父母は平家に住んでいる。
My grandparents live in a one-story house.
平家は階段がなくて暮らしやすい。
A bungalow is easy to live in because there are no stairs.
退職後に平家を建てて田舎に移り住んだ。
After retiring, I built a bungalow and moved to the countryside.