Cal. Civil Code § 2929 : Lien — California Civil Code — Obligations — Mortgage — Mortgages In General — Doing act impairing mortgagee's security prohibited Date: 14 Sep 2016 TEXT PDF Current through the 2016 Legislative Session No person whose interest is subject to the lien of a mortgage may do any act which will substantially impair the mortgagee's security. Ca. Civ. Code § 2929