California Codes, Code of Civil Procedure - CCP, Part 2 — Of Civil Actions, Title 10 — Actions in Particular Cases, Chapter 10 — Good Faith Improver of Property Owned by Another, Section 871.1
as used in this chapter, “good faith improver” means:
(a) A person who makes an improvement to land in good faith and under the erroneous belief, because of a mistake of law or fact, that he is the owner of the land.
(b) A successor in interest of a person described in subdivision (a).
Notes
Defines a “good faith improver” as a person who improves land in good faith while mistakenly believing, because of a mistake of law or fact, that the person owns the land. The term also includes a successor in interest of a person who made such an improvement under that erroneous ownership belief.
Use as reference
Lexinter.net | California Code, Code of Civil Procedure - CCP § 871.1 | https://laws.lexinter.net/codes/california/code-of-civil-procedure/part-2/title-10/chapter-10/section-871-1