Tenancy-in-common ownership represents the most widespread form of common ownership of real property in the United States. Such ownership under the default rules also represents the most unstable ownership of real property in this country. Thousands of tenancy-in-common property owners, including members of many poor and minority families, have lost their commonly-owned property due to court-ordered, forced partition sales as well as much of their real estate wealth associated with such ownership as a result of such sales.This Article reviews and analyzes the Uniform Partition of Heirs Property Act (UPHPA), a uniform act that represents the most significant reform to partition law in modern times. I served as the Reporter, the person charged with principal responsibility for drafting a uniform act promulgated by the National Conference of Commissioners on Uniform State Laws, for the UPHPA. The Article summarizes those aspects of partition law that have resulted in thousands of property owners losing millions of acres of property and the real estate wealth associated with such property. The Article also provides an analysis of key sections of the UPHPA, and this analysis makes clear that the UPHPA represents a very comprehensive and innovative reform to what heretofore had long been perceived to be the intractable problem of tenancy-in-common land loss. To this end, the Council of State Governments selected the UPHPA as one of thirty-five newly enacted statutes or uniform acts for inclusion in its 2013 Suggested State Legislation publication (from hundreds of submissions by state officials from across the country) to encourage states to consider it as a model. The UPHPA has been enacted into law in four states, it was introduced for consideration in four other jurisdictions in 2014, and a number of states are on the cusp of introducing it for consideration in 2015.