As a real estate agent, you know that a referral from a happy client is the ideal source of new business. You don't have to work nearly as hard on selling yourself to this new client as the referrer has already done a lot of that for you. The trouble is, a lot of agents leave referral business up to chance rather than building a strategy to drive referrals. You don't have to be one of them. Start implementing these 5 tips and see a boost in that valuable referral business.