1. Houses

Third House: the House of Communication (Meaning and Astrology)

Third House in Astrology

The 3rd house represents the exploration of one’s immediate environment through relationships with siblings and relatives, early educational experiences, short-distance travel, and daily communications. In a horoscope, it can describe the challenges or gifts related to personal expression, learning and mental activities, or sibling dynamics.

The 3rd house is one of four cadent houses of the birth chart (3rd, 6th, 9th, and 12th), houses which follow succedent houses. Traditionally, planets in cadent houses were considered to have less wattage or power than planets placed in angular or succedent houses. They can also be seen as more transitional, flexible, or mutable places where the energy of a planet is less fixed and more adaptable.

Key Concepts

In traditional astrology, The Moon has its “joy” (meaning that it functions especially well) in the 3rd house. Because the Moon moves so quickly and so frequently, it resonates with short-distance travel, thinking, and communicating. The intuitive quality of the Moon can be well balanced when placed in the house that has to do with logic, intellect, and communication.

  • List of 5 keywords:

    • Communication

    • Learning

    • Short distance travel

    • Siblings

    • Environment

What Does the 3rd House Rule?

The 3rd house is known as the House of Communication on the astrological chart. It describes the ways that one translates one’s inner mental landscape outwards through speaking, relating, conversing, writing, and all other forms of communicating. It can describe any positive or challenging dynamics related to siblings, close relatives, and early educational experiences. The zodiac sign on the 3rd house, as well as its ruling planet, can describe the style and manner that one uses to express themselves.


The 3rd house, and any planets residing there, can describe the early childhood environment and any sibling (or close relative) relationships that were formative to one’s upbringing. These can describe both challenging and positive experiences and the ways in which the early environment shaped one’s social conditioning and learned behaviors.


The sign on the 3rd house can describe one’s style of communication, and its ruling planet can signify what themes shaped early experiences of learning and social interaction. Planets here can color the way that one expresses themselves through language, relates to others socially, or shares their ideas with the broader world.


Planets in the 3rd house can describe one’s appetite for knowledge, what one is naturally curious about, or any challenges related to early childhood educational experiences. These can either manifest as delays to learning or needing an unconventional educational path or as a natural aptitude for language, social relationships, and learning new skills.

Transits in the Third House

Transits to the 3rd house can impact the ways that one seeks to express their ideas through writing, speaking, or broadcasting in a variety of media. In childhood, transits to the 3rd house can speak to mental and intellectual developments, the acquisition of communicative skills, and the ways that one’s early familial environment shapes the personality within the family unit.

Depending on the person’s time of birth and the planet involved, these transits can either be experienced as an expansion of communicative skills (through reading, writing, relating, and sharing ideas) or else as an influence of challenge and restriction to one’s mental processes, learning, or communicating. Internally, they can be experienced as an increased desire to share one’s ideas with others or as a period of reviewing and refining one’s ideas.

Planets in the Third House

Sun: The Sun in the 3rd house suggests that the locus of one’s central identity is constellated around the expression of one’s ideas through writing, speaking, dialoguing, and sharing with others. It can also suggest that bonds with siblings or close relatives (whether challenging or positive) are a significant building block of one’s identity.

Moon: Because the Moon rejoices in the 3rd house, the intuitive and sensitive qualities of the Moon are well balanced by the 3rd house’s concern with intellectual exchange and mental pursuits, as complex ideas and information can be easily and intuitively grasped. The inner feeling of basic emotional safety is linked to self-expression through writing, conversing, and sharing one’s ideas with others.

Mercury: The Mercurial need to communicate and absorb information is well placed in the 3rd house, where the ability to express and relay ideas are heightened. This placement lends a verbose and witty quality to the personality and a strong need to relate to others through dialogue and reflection. Writing, speaking, or teaching (especially in an early education environment) may feature as part of the career path.

Venus: Venus in the 3rd house imparts a natural curiosity and sense of social diplomacy to the personality and a need for social (and romantic) relationships and compatibility based on the discussion of ideas, intellectual exchange, and explorations of the mind and the world. Creativity can be expressed verbally or through writing, with an appreciation for intellectual artistry.

Mars: Mars in the 3rd house can suggest a passion for learning, acquiring new knowledge, and expressing one’s ideas through writing or speaking. The communication style can be straightforward, assertive, and, at times, aggressive. It can speak to childhood experiences colored by arguments with siblings or close relatives and the feeling of needing to defend oneself within the family unit.

Jupiter: Jupiter in the 3rd house of the natal chart suggests that one experiences abundance and a sense of personal life expansion through learning and sharing of ideas. A love of learning can be a lifelong passion that inspires many varied intellectual and mental pursuits, which can also present as a relentless search for more knowledge at the risk of missing the present moment.

Saturn: Saturn in the 3rd house can represent early childhood challenges around the expression of one’s thoughts, communications, or the feeling of confidence when expressing oneself. It can indicate the presence of restrictive authority figures who stifled the expression of self early on, but also the potential to find one’s own unique way of expressing one’s inner world through time.

Uranus: Uranus in the 3rd house suggests a unique and original mode of self-expression, unconventional ideas, and an interest in innovation and idealism. It points to a free-thinking, individualistic attitude that can sometimes be adversarial to others, leading to feelings of being misunderstood or alienated for one’s differences. It can also suggest an early childhood characterized by frequent moves, unexpected shakeups, or unpredictability.

Neptune: Neptune in the 3rd house can impart an imaginative and creative flair to one’s self-expression and a desire to communicate one’s thoughts and ideas through art, poetry, or spiritual pursuits. Communication of all kinds is an important medium to connect to the spiritual or creative areas of life, but the mind can also be prone to fogginess, confusion, or illusions.

Pluto: Pluto in the 3rd house suggests that there may be challenges in early childhood around communication or the expression of one’s truth and the subsequent need to discover and express this inner core. Life may provide many opportunities to discover the deepest recesses of the mind, to confront what lives beneath the surface of conscious awareness, and find healing through bringing the shadows to light.