Whether buying a house with a pre-marital loan belongs to the joint property of husband and wife depends on the specific situation. To be sure, the part jointly repaid after marriage and its corresponding value-added part belong to common property. If both parties contribute to buying a house before marriage, if it is registered in the names of two people, it belongs to the joint property of husband and wife. If it is registered in a person's name, it depends on the contribution. Also, buying a house with a loan before marriage and adding the other person's name after marriage also belong to the joint property of husband and wife. As for the division in divorce, it depends on the length of marriage, the degree of fault and whether there are children. Generally, the other party will be given a 20-50% share.

First, in understanding the premarital property should pay attention to the following aspects:

1, the key to judge whether it belongs to premarital property lies in the acquisition time of premarital property rights. If the property right is obtained before marriage, but the property is actually occupied after marriage, its nature belongs to pre-marital personal property;

2. The premarital property of one spouse shall not be converted into the joint property of the husband and wife due to the continuation of the marriage relationship. Unless otherwise agreed by the parties;

3. Personal property before marriage is naturally damaged, consumed or lost in the common life after marriage. If one party requests compensation with the joint property of husband and wife during divorce, it will not be supported;

Two, the following property belongs to the personal property before marriage:

1. Property owned by husband and wife before marriage, including personal labor income before marriage, inherited or donated property and other lawful income. It also includes real estate purchased for marriage before marriage;

2, demobilized soldiers brought back from the army medical expenses and production subsidies, and married couples living together for a short time, the demobilization fee and transfer fee;

3. Clothes, articles for daily use and professional articles used by husband and wife at the time of divorce. Of course, except valuables;

Legal basis: Article 1062 of the Civil Code of People's Republic of China (PRC), the following property acquired by husband and wife during the marriage relationship is the joint property of husband and wife: (1) wages, bonuses and labor remuneration; (2) Income from production, operation and investment; (3) Income from intellectual property rights; (4) Inherited or donated property, except as provided for in Item 3 of Article 1063 of this Law; (5) Other property that should be jointly owned. Husband and wife have equal rights to dispose of common property.