Cal. Civil Code § 4100 : California Civil Code — General Provisions — General Provisions — Definitions — Common interest development Date: 14 Sep 2016 TEXT PDF Current through the 2016 Legislative Session "Common interest development" means any of the following: (a) A community apartment project. (b) A condominium project. (c) A planned development. (d) A stock cooperative. Ca. Civ. Code § 4100 Added by Stats 2012 ch 180 (AB 805),s 2, eff. 1/1/2013, op. 1/1/2014.