Read the passage and answer the questions

I live in the house near the sea. It is an old house, about 20 years old, and it is not very large. There are two bedrooms upstairs but not bathroom. The bathroom is downstairs next to the kitchen and there is a living room where there is a lovely old fireplace. There is a garden in front of the house. The garden goes down to the beach and in spring and summer there are flowers everywhere. I live alone with my dog, Boxer but we have many visitors. Many of my friends work in the city, so they often stay with me because they want to relax.

How old is the house?