All houses in the Vedic horoscope are divided into groups. The houses belonging to the same group affect each other.
Kendra (houses: 1, 4, 7, 10) – These houses are considered the main and the foundation of the horoscope. It is easier to overcome difficulties with a strong foundation. These houses are considered the houses of the god Vishnu. Therefore, it is preferable for benefic planets to be in these houses to strengthen the foundation.
Trikona (houses: 1, 5, 9) – The most auspicious houses, they are called the houses of Lakshmi. The goddess Lakshmi brings us only success and prosperity. Therefore, it would be very good if benefic planets are in these houses.
Dusthana (houses: 3, 6, 8, 12) – These are unfavorable houses, and their characteristics speak for themselves: diseases, enemies, death, loss. Although the third house's characteristics are not clearly associated with something negative, it is considered the least 'Dusthana' house.
Maraka (houses: 2, 7) – These houses are traditionally called the houses of death because they relate to everything that can shorten a person's life.
Upachaya (houses: 3, 6, 10, 11) – These are houses of growth. These houses are considered good for malefic planets because as the person matures, these houses gain a lot of strength. Even malefics like Saturn and Mars can soften their negative effects.