Yes, mortgage leads do work, but it really depends on what market segment the leads have been generated from. The best subsection of the market for mortgage leads is the middle to upper middle class of the population. The reason is that these people have money, but they generally do not have enough money. So, these are the people who would prefer to buy their homes and cars on mortgages. If you generate your mortgage leads keeping this class of people in mind, you will sure get a very practicable list of leads.