Three Maryland statutes touch the house. They work at different times. Read each one on its own.
Maryland Family Law Article section 8-201 defines marital property as property acquired by one or both spouses during the marriage, however titled.
Section 8-208(a)(2) says the court is allowed to act on possession and use of the family home while the case is pending. The court is allowed to give one spouse sole possession and use, or to divide possession and use. Section 8-208(b) tells the court to weigh the best interests of any child, each spouse's interest in using the home, and any hardship. Section 8-208(c) allows the court to order either or both spouses to pay the mortgage, insurance, taxes, and similar expenses.
Section 8-205 comes later. After the court determines marital property and its value, it is allowed to transfer an interest in property, grant a monetary award, or both.
None of these sections says what changes on the day you file. This page states no rule on that. Ask your attorney, lender, or title company. Then work the checklist below.