ONROERENDE AND VAST STAAT by Law Professor Dutch. Immovable and fast estate, that is, land or real estate. The phrase is used in Dutch wills, deeds, and antenuptial contracts of the early colonial period in New York. See Spraker v. Van Alstyne, 18 Wend. (N. Y.) 208. Related Posts:LANDEDREAL ESTATE AGENTMORGENHABENDUMHERITAGEEFFECTS