If signs describe how a planet operates, houses describe where in life it shows up. A Venus in Leo will love and create regardless of house - but Venus in Leo in the 10th house pushes that romantic, creative energy into career and public image, while Venus in Leo in the 4th turns it inward toward home and family.
This guide walks through all twelve houses, what they cover, the lazy-but-useful shorthand for each, and what to watch for when interpreting your own chart.
Signs are how a planet behaves. Houses are where it shows up.
- โHouses are areas of life. Signs are the flavor. Planets are the actor.
- โHouse 1 = self, House 7 = partners, House 10 = career
- โEmpty houses are not bad - they just mean less intensity in that domain
How houses are calculated
The houses rotate with the Earth, so they depend on your birth time and location. The Ascendant (your Rising sign) marks the cusp of the 1st house. The other eleven cusps spread around the wheel from there. House systems (Placidus, Whole Sign, Koch, etc.) calculate the in-between cusps differently - but the 1st, 4th, 7th, and 10th are always the same: they are the angles formed by horizon and meridian.
Astrolas defaults to Placidus, which is the most common Western house system. You can switch systems in your settings.
The four angular houses (1, 4, 7, 10)
These are the strongest houses. A planet here is loud and structural to your life.
1st house - self, body, appearance. How you walk into a room. Your physical body. Your default vibe. Planets here are part of your "presence."
4th house - home, family, roots. Where you came from. The home you actually build. Your inner private base. Often shows the parent who shaped your emotional core.
7th house - partnerships, marriage, open enemies. Not just romance - any committed one-on-one relationship. Business partners, clients, therapists. The kind of person you keep attracting is described here.
10th house - career, public image, authority. What you become known for. The role you play in society. Career arc and reputation. The parent who shaped how you handle status.
The four succedent houses (2, 5, 8, 11)
These are about resources and values - what you hold, build, and exchange.
2nd house - money, possessions, values. What you own. What you consider yours. Earning style. Self-worth (literally: what you are worth, to yourself).
5th house - creativity, romance, children, fun. Self-expression for joy. Dating (not marriage - that's the 7th). Kids. Hobbies. The chart's playground.
8th house - shared resources, sex, transformation, death. The deep one. Joint finances (debt, inheritance, taxes). Intimacy that changes you. Crisis. Therapy. What you are afraid of and how you transform through it.
11th house - friends, groups, future, hopes. Your social network. The communities you belong to. Long-term goals. The collective you contribute to.
The four cadent houses (3, 6, 9, 12)
These are about processing, learning, refining.
3rd house - communication, siblings, short trips, learning. Daily mind. How you speak. Texting. Brothers and sisters. Local environment.
6th house - work routine, health, service, daily tasks. The day-to-day grind. Job (versus career, which is 10th). Diet. Exercise. The small repeated decisions that compound into health.
9th house - higher learning, travel, beliefs, publishing. University. Long journeys. Worldview. Religion. Foreign cultures. Where you expand your mind.
12th house - solitude, hidden things, surrender, the unconscious. The most private house. Dreams. Hospitals. Prisons. Meditation. What you cannot see in yourself. Karma.
How to read houses in your own chart
- Find your Ascendant - this marks the 1st house cusp. Every chart starts here.
- Note which planets sit in angular houses (1, 4, 7, 10). These are your loudest planets regardless of sign.
- Pay attention to a house with two or more planets (a stellium) - that area of life is wildly emphasized.
- Empty houses are not empty of life - they are just quieter and described by the sign on the cusp plus its ruling planet.
Look at Beyoncรฉ's chart for a clear example of a packed 10th house (Mars + Mercury + Sun + Jupiter in Virgo). Compare it to Steve Jobs' chart where 12th house energy dominates and the public arc came through a more hidden, archetypal channel.
- โFind which house has the most planets - that is where life concentrates for you
- โNote empty houses with care - empty does not mean meaningless, just less intense
- โPay attention to the sign on each house cusp - that flavors how the house behaves
Reading an empty house through its ruler
Most charts have three to five houses with no planets in them. That is normal, since ten planets cannot fill twelve houses evenly. To read one, use two steps:
- Look at the sign on the cusp. If the 7th house begins in Taurus, partnerships run in a Taurus way: slow to start, loyal, attached to comfort and consistency.
- Find the ruler of that sign and see where it lives. Taurus is ruled by Venus. If Venus sits in the 10th house, your partnerships are tied up with career, public life, or someone you meet through work.
That ruler chain is how traditional astrologers read the whole chart, not just the crowded houses. It also explains why two people with an empty 7th house can have very different relationship stories.
Why house systems disagree
Placidus, Koch, and other quadrant systems divide space by time, so the size of each house varies. Near the equator the houses come out fairly even. At higher latitudes, say Oslo or Anchorage, some houses stretch across 50 degrees or more while others shrink to 15. When a house is so large that it holds an entire sign without that sign touching either cusp, the sign is called intercepted.
Whole Sign houses take the opposite approach: the rising sign is the whole 1st house, the next sign is the 2nd, and so on. No interceptions, every house exactly 30 degrees. It is the older method and many Hellenistic-style readers prefer it.
If a planet sits within a few degrees of a cusp, check it in both systems. A planet that moves from the 9th to the 10th house between systems is worth a closer look, because the question "is this career or belief?" is a real question for that person.
Derived houses
Houses can also be turned. If the 7th house is your partner, then counting the 7th as their 1st gives you a chart for them: the 8th house (2nd from the 7th) is your partner's money, the 10th house (4th from the 7th) is your partner's family. Astrologers use this to answer questions about other people in your life without casting their chart. It is a technique to use carefully, but it explains why the 8th house covers inheritance and joint money.
Common mistakes with houses
- Treating the 6th as career. The 6th is the daily job and its routines. Career direction, reputation, and status belong to the 10th.
- Reading the 12th as purely negative. It also covers rest, retreat, spiritual practice, and work done behind the scenes.
- Ignoring time accuracy. A birth time that is 20 minutes off can shift every cusp by about 5 degrees, enough to move a planet into the next house.
What to do next
Open your own chart and read down the planet list. For each planet, note the sign and the house. Then ask: does the life area of that house match where the planet's energy actually shows up in my life? That is the start of reading your chart well, instead of just collecting symbols.
Next read: synastry explained - because reading two charts together is the natural next step.