A condominium plan is filed by the Declarant prior to the construction of the project and consists of a description or survey map of the project in sufficient detail to identify the common areas and each unit. Civil Code §1351(e).

Condo plans are used with condominium developments, not planned developments. PUDs use a tract which provides a two-dimensional description of individual ownership. Condominiums, on the other hand, require a three dimensional description of the condominium's air space (see example).