landed_estate
1. [ noun ] extensive landed property (especially in the country) retained by the owner for his own use
Synonyms: acres estate land demesne
Examples:

"the family owned a large estate on Long Island"

Related terms: real_property plantation barony countryseat smallholding leasehold latifundium seigneury Crown_land manor hacienda homestead entail fief glebe freehold
Similar spelling:   landed_gentry