§ 874.311.Title; Applicability

This section opens Chapter 10 by naming it and setting its scope. California adopted the Partition of Real Property Act to give tenants in common extra protection against a fast, undervalued forced sale — protection modeled on a national reform effort that grew out of concern for family-owned land passed down informally across generations, where heirs without a written agreement about the property could end up losing it to a single co-owner or an outside buyer pressing for a quick sale.

Notably, the statute itself doesn't gate its protections behind a separate definition of "heirs property." Instead, subdivision (b) applies this chapter automatically to any real property held in tenancy in common where the cotenants haven't agreed, in a record, on how partition should work. That's a broader trigger than the name suggests — it reaches inherited family property along with any other tenancy-in-common arrangement lacking a governing agreement, though inherited property without formal estate planning is exactly the situation the underlying reform was built around.

Subdivision (c) makes the chapter prospective only, applying to partition actions filed on or after January 1, 2023. Older actions, and any property where the cotenants have their own written understanding about partition, fall outside this chapter and back under the rest of Title 10.5's ordinary procedures.