The conditional of hay (there is/there are) is habría (there would be), eg en mi ciudad ideal habría una piscina (in my ideal town, there would be a swimming pool).
English Teacher Claire on MSN

Master English conditionals in 15 minutes

English conditionals don’t have to be confusing. In this lesson, we clearly explain the zero, first, second, and third ...
The conditional tense is used to say what might happen under certain conditions. It is called the conditional tense because it is dependent on a certain condition, eg you can only fulfil one thing on ...