A common question in astrology is, Who is the Lord of the 7th House? The 7th house stands for marriage, relationships, and partnerships. The ruling planet of the zodiac sign is the 7th house, which becomes its Lord. This planet affects love life, harmony, and business ties. For example, if Libra is in the 7th house, Venus is the ruler. Choosing the right 7th house ruler is like buying the right property....