This villa later left the hands of the Kaga family and its ownership changed several times, once being used as a members-only restaurant, but becoming older year after year at the end of the bubble economy a construction firm bought it as part of a plan to have it demolished and build condominiums in a bid to raise land prices around the area.
山荘は後に加賀家の手を離れ、様々な所有者の手に移り一時は会員制レストランなどに再利用されるが年々老朽化が進み、バブル経済末期には建設業者が買収し、一帯を更地に地上げするマンション開発計画を立てた。