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The twelve houses

Signs describe how, planets describe what, houses describe where. New to houses? Start below the cards.

Angular houses

The four pillars that begin at the angles: self, home, partners and career.

Succedent houses

The houses that follow the angles: what you build up, keep and share.

Cadent houses

The houses that fall away from the angles: learning, adjusting and preparing.

What the houses are

A birth chart is a map of the sky from one place at one moment. The planets and signs tell you what was up there; the houses tell you where it was in relation to you, standing on the ground. Because the Earth turns once a day, the whole zodiac appears to rise in the east, climb overhead and set in the west every 24 hours. The houses divide that daily turning into twelve sections, and each section is linked to an area of life: money, home, partners, work and so on.

Two lines anchor the wheel. The horizon runs from the Ascendant (ASC), the point of the zodiac rising in the east, to the Descendant (DSC), the point setting in the west. The meridian runs from the Midheaven (MC), the point culminating overhead, to the IC (Imum Coeli, "bottom of the sky"), the point directly below. These four points are called the angles. On a chart wheel the Ascendant is drawn on the left, so the top of the wheel is the sky overhead and the bottom is the sky beneath your feet.

The houses are numbered counterclockwise from the Ascendant. The 1st house begins at the Ascendant and runs below the eastern horizon; the 4th begins around the IC; the 7th begins at the Descendant; the 10th begins around the MC. So houses 1 to 6 sit below the horizon and houses 7 to 12 above it. A planet that has just risen is in the 12th house, not the 1st, because the sky moves clockwise through the houses over the day.

The twelve houses run counterclockwise from the Ascendant, the rising point on the left.

ASC
AscendantRising degree on the eastern horizon; the 1st house begins here.
IC
Imum CoeliThe lowest point of the chart; the 4th house begins here.
DSC
DescendantSetting degree on the western horizon; the 7th house begins here.
MC
MidheavenThe highest point of the chart; the 10th house begins here.

Select any number on the wheel to open that house.

Houses, signs and planets

Beginners often mix up houses and signs, because both come in twelves. They measure different things. The signs divide the path of the Sun through the year; the houses divide the turning of the sky through the day. Your Sun sign depends on your birthday. Your houses depend on your birth time and place, which is why two people born on the same day can have very different house placements.

  • The planet is what: a need or drive, such as Venus for love and value or Mars for action.
  • The sign is how: the style that drive takes, such as Taurus for slow and sensual or Gemini for quick and curious.
  • The house is where: the area of life it plays out in, such as the 2nd house of money and possessions or the 7th house of partners.

Put together, Venus in Taurus in the 7th house becomes a sentence: a love of steady, sensual comfort (Venus in Taurus) that shows up most in committed partnerships (7th house). Each house also has a natural sign, the sign with the same number, such as Aries for the 1st and Libra for the 7th. That is a useful teaching correspondence because the themes overlap, but it is not how your chart works. Your own houses are coloured by the signs actually on their cusps.

Angular, succedent and cadent houses

The twelve houses fall into three groups of four, according to their position relative to the angles. This grouping is called angularity. It is separate from the cardinal, fixed and mutable modalities of the signs, although the pattern is similar.

  • Angular

    Begin at the four angles. The pillars of life: self, home, partners and career. Planets here tend to be prominent and active.

  • Succedent

    Follow the angles. About what you build up and keep: resources, creations, shared assets and support networks.

  • Cadent

    Fall away from the angles. About learning, adjusting and preparing: study, routines, travel and retreat.

Hellenistic astrologers called angular houses kentra, "pivots", and cadent houses apoklimata, "declines". They saw planets in angular houses as the most effective and planets in cadent houses as less visible. Modern astrologers keep the idea of prominence but rarely treat cadent planets as weak: a planet in the 3rd or the 9th can be central to a writer or a teacher. Use angularity to ask how visible a planet is, not how good it is.

The twelve houses at a glance

To read any house in your own chart, use the same four steps: find the sign on its cusp, find the planet that rules that sign, see where that ruler sits, and read any planets inside the house. Each house page below walks through the method with a worked example.

House systems

Astrologers agree on the four angles but not on how to divide the space between them. The method is called a house system, and the most common ones fall into two families.

SystemHow it worksGood to know
Whole signThe rising sign is the whole 1st house, the next sign the whole 2nd, and so on. Every house is exactly one sign.The oldest system in use, simple and works at any latitude. The default on stars.guide. The MC can fall in the 9th, 10th or 11th house.
EqualTwelve 30° houses measured from the Ascendant degree.Works at any latitude; the MC floats as in whole sign.
PlacidusStarts each angular house at an angle and divides the space between by time.The most common modern default. Houses vary in size and cannot be calculated near the poles.
Koch and PorphyryOther quadrant methods that also start at the angles but divide the space differently.Usually agree with Placidus on the angles; may differ on intermediate cusps.

Most planets land in the same house whatever system you use. The differences show up near house boundaries: a planet a few degrees before the Ascendant is in the 1st house by whole sign but in the 12th by Placidus. When that happens, read both and see which description fits. Far from the equator, quadrant systems can produce very uneven houses, which is one reason many astrologers now prefer whole-sign or Equal houses.

Why your birth time matters

The Ascendant moves through the whole zodiac in a day, about one degree every four minutes, and a new sign rises roughly every two hours. That makes the houses the most time-sensitive part of a chart. A birth time off by 15 minutes usually shifts the Ascendant by a few degrees; an hour can change the rising sign and move every planet one house over.

  • Check the record. A birth certificate or hospital record is best. Family memories are often rounded to the nearest hour.
  • Look at the edges. If a planet or the Ascendant sits within a few degrees of a sign or house boundary, treat that placement as uncertain.
  • No time at all? Use a solar chart, which puts your Sun sign on the 1st house, or a chart set for noon. The signs and aspects stay useful; the houses become symbolic rather than exact.
  • Rectification is the practice of estimating a birth time from known life events. It can help, but it is an informed estimate, not a measurement.