What Is Mello-Roos Tax?: Mello-Roos is a special property tax on real estate in Ladera Ranch (and other "newer" California cities) in addition to your normal property tax obligation. Basically it provides public financing through the sale of bonds for the purpose of financing public improvements and services (schools, parks, law enforcement, streets, water, sewage). The tax we pay is utilized to make payments of principal and interest on the bonds. What is the Total Tax Rate in Ladera Ranch including Mello Roos?: The (0 comments)