Prices for a house in the sun are at low prices and interest rates are still affordable. Foreign Nationals are trying to purchase real estate in Florida thanks to the economic downturn and the weak US Dollar. ... Brokers are the ones who help you find lending companies with the best mortgage rates. Brokers have a greater access into the best mortgage rate options posted by lending companies. This means that you get a wider selection of loan products and terms for you to decide which one has the best mortgage rate.