Christine Costner and Kevin Costner.Photo:Lester Cohen/Getty

Christine Costner, Kevin Costner

Lester Cohen/Getty

Costner, the document continues, “respectfully requests that Christine be ordered to vacate his separateproperty residenceforthwith and no later than July 13, 2023.”

Baumgartner has remained in the Santa Barbara compound, worth an estimated $145 million, since filing for divorce on May 1, despite a clause in her prenuptial agreement that he claims requires her to leave within 30 days. That deadline has since passed.

The exes share three children together — Cayden, 16, Hayes, 14, and Grace, 13 — who have lived in the Santa Barbara compound their whole lives. In order to set up a “suitable separate household,” for them, she has requested$248,000 per month in child support, a number Costner has rejected as “inflated.”

On May 2, a rep for Costner, 68,confirmedto PEOPLE that Baumgartner, 49, had filed for divorce after 18 years of marriage. She listed their date of separation as April 11 and cited “irreconcilable differences,” requesting joint custody of theirthree children.

Since then, the separated couple’s legal teams have traded sharply-worded legal filings, battling over many issues, including child support.

Under the terms of their prenuptial agreement, Baumgartner is entitled to just $1.4 million, a sum Costner claims he has paid.

“Christine can afford to move,” reads their reply. “She has at her disposal almost $1,500,000 in cash to find alternative housing. Multiple 4-bedroom, 4-bathroom lovely homes are presently available, located in close proximity to Kevin’s separate property residence… Kevin made multiple offers to assist her in relocating.”

Kevin Costner and Christine Baumgartner in 2014.Jon Kopaloff/FilmMagic

Kevin Costner and wife Christine Baumgartner arrive at the Academy Of Motion Picture Arts And Sciences' Governors Awards

Jon Kopaloff/FilmMagic

A source close to Costner recently toldPEOPLE, “This is all about Christine. Kevin has gone above and beyond in providing Christine the necessary means to find a suitable place for her to move."

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In a declaration directly from Costner, the new reply memorandum confirms he paid Baumgartner those amounts plus the $1 million due under their prenuptial agreement.

“I offered her the full use of household staff to assist in making the move, and I offered to pay her now the additional $200,000 I owe her under the PMA in cash, rather than as a down-payment towards her purchase of a home… I also told her that I would continue to pay 100% of the children’s expenses since she filed for divorce, and I have done so.”

He added that “there are multiple very nice homes in the Santa Barbara area advertised for six-week and more rentals throughAirbnb. She could have arranged for a month or two month or shorter term rental.”

Costner then detailed the effect this conflict has had on his upcoming screen project,Horizon: An American Saga, on which he serves as producer, director, writer and actor.

“Because I am not now comfortable sharing a residence with Christine, I very reluctantly changed my travel plans and delayed returning home,” said Costner, who allegedly went to his 160-acre ranch in Aspen, Colorado instead.

Kevin Costner and Christine Baumgartner with their three children.Albert L. Ortega / Contributor / Getty Images

Kevin Costner and Christine Baumgartner with their three children

Albert L. Ortega / Contributor / Getty Images

Costner also mentioned that because he isno longer involvedin the hit Paramount Network seriesYellowstone, the actor’s largest source of revenue, his “income going forward depends on timely completing and releasingHorizonfilms, starting withHorizon I.”

Attorneys for Baumgartner did not immediately respond to PEOPLE’s requests for comment.

Costner further claimed that he canceled one of Baumgartner’s credit cards because, throughout May and early June, she allegedly charged more than $100,000: “Christine began charging large sums on the credit cards payable to her divorce attorneys and forensic accountants. She gave me no advance warning each time she did so."

Costner and Baumgartner are due in court on July 5 for a case-management conference.

source: people.com