Kevin Costner says his estranged wife Christine Baumgartner is refusing to pack her stuff & leave their home!

Kevin Costner's estranged wife Christine Baumgartner was spotted at their $145 million beachfront compound in Carpinteria, California Wednesday, amid news that he has taken legal steps to get her to leave the home in the wake of her divorce filing last month.

The Oscar-winning actor, 68, said that under the terms of their prenuptial agreement, Baumgartner, 49, had a 30-day period to move out of the house he owns following her May 1 divorce filing, Radar reported Tuesday after reviewing legal docs in the case. 

The Dances With Wolves actor-director told the court he believes that Baumgartner is remaining in the home to persuade him to give into 'various financial demands' she is making in the wake of the split. Costner said he has already provided Baumgartner with $1.45 million under the terms of the prenup, providing ample funds for her to procure a new place to live. 

Baumgartner, who shares three children with Costner - sons Cayden, 16, and Hayes, 14, and daughter Grace, 13 - appeared to have a passenger in the luxury vehicle while making the trek in the well-heeled coastal community. Amid the divorce and property dispute, the Yellowstone star has told the court that he would be amenable to further financial arrangements in an effort to get her to leave the home. 

Costner said in court docs that he's amenable to 'contribute as part of his child support obligations $30K per month for a rental house, and is willing to advance another $10K for her moving costs.' 

He said in court docs that he is the sole owner of the three family homes; and per the prenup they signed when they wed in 2004, Baumgartner agreed to leave the homes and take her possessions in the event of a divorce.