The twelve astrological houses organize the natal chart into fields of life. A planet in a house is interpreted through that house’s topics, alongside the planet’s inherent symbolism and sign placement. Mars in the first house therefore raises different questions than Mars in the tenth, even if Mars occupies the same zodiac sign in both charts.
What houses represent
The first house is linked with personal presence; the second with resources; the third with communication and nearby environments; the fourth with family and foundations; the fifth with pleasure and creativity; and the sixth with work routines and care. The seventh concerns partnership, eighth shared resources and vulnerability, ninth learning and worldview, tenth public direction, eleventh groups and hopes, and twelfth withdrawal and hidden processes.
How to read a planet in a house
Identify the house and its ruler, note whether the planet is angular, succedent or cadent, and read aspects to the house ruler and relevant angles. One occupied house may be emphasized, yet empty houses are not absent from life. An empty seventh house, for example, does not imply an absence of relationships; the sign on its cusp and its ruler remain interpretable.
Why house placement may change
Different house systems divide the chart differently. In Placidus, equal or whole-sign houses, the same planet may fall into a different numbered house, especially near a cusp. A correct birth time and explicit choice of system are essential before drawing detailed conclusions.
Continue exploring
For the wider context, return to Astrology Houses. Related topic pages in this section expand these ideas with placement-specific interpretations.