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The 4th house in astrology

The 4th house sits at the bottom of the chart, usually beginning at the IC, the degree of the zodiac crossing the meridian below the horizon at your birth. Astrologers read it as your roots: home, family, your background and the private self you show only to the people closest to you.

Rules: Home, family, roots and private life
Natural sign: ♋︎ Cancer
Natural ruler: The Moon
House type: Angular
Element of its sign: Water
Opposite house: 10th house
Place in the chart: Below the horizon, western half
Sun here at birth (Placidus): Born in the last third of the time from sunset to solar midnight

What the 4th house rules

This house covers home in every sense: the place you live, the household you grew up in, family history and the land or property you hold. Traditional astrologers also gave it the end of life and the final outcome of matters, since it is the foundation everything rests on. One parent belongs here as well. Older texts usually gave the 4th to the father and the 10th to the mother, while many modern astrologers give the 4th to the parent who nurtured you more; practice varies. Planets here describe what you need to feel at home and how family patterns shaped you. It is the most private of the four angles.

Natural sign and ruler

The 4th house matches Cancer and its ruler, the Moon, in the natural zodiac. Both are about nurture, memory and shelter. In your own chart the sign on the IC and its ruler tell you more about your home life than Cancer does, especially if a planet sits close to the cusp.

An angular house

Angular houses (the 1st, 4th, 7th and 10th) begin at the four angles of the chart: the Ascendant, the IC, the Descendant and the Midheaven. Astrologers read them as the strongest and most visible houses, where planets act openly. As an angular house, it is one of the four pillars of the chart, quiet in public but strong in private life.

Planets in the 4th house

The Moon here is at home in both senses, and astrologers read a strong attachment to family and a need for a settled base. Saturn can point to early responsibility at home or a serious family atmosphere, Jupiter to a large or generous household. Uranus here is often read as frequent moves or an unusual home life. Venus likes a beautiful living space, and the Sun may make home and family central to identity.

Your 4th house sign by rising sign

The sign on your 4th house cusp depends on your rising sign. In Whole Sign and Equal houses it is always the sign three signs after your rising sign, as in this table. In Placidus and other quadrant systems it is often the same sign, but it can differ, especially for births far from the equator.

Sign on the 4th house cusp for each rising sign (Whole Sign and Equal houses)
Rising sign	4th house sign	4th house ruler
♈︎ Aries rising	♋︎ Cancer	The Moon
♉︎ Taurus rising	♌︎ Leo	The Sun
♊︎ Gemini rising	♍︎ Virgo	Mercury
♋︎ Cancer rising	♎︎ Libra	Venus
♌︎ Leo rising	♏︎ Scorpio	Mars (modern: Pluto)
♍︎ Virgo rising	♐︎ Sagittarius	Jupiter
♎︎ Libra rising	♑︎ Capricorn	Saturn
♏︎ Scorpio rising	♒︎ Aquarius	Saturn (modern: Uranus)
♐︎ Sagittarius rising	♓︎ Pisces	Jupiter (modern: Neptune)
♑︎ Capricorn rising	♈︎ Aries	Mars
♒︎ Aquarius rising	♉︎ Taurus	Venus
♓︎ Pisces rising	♊︎ Gemini	Mercury

How big is the 4th house?

In Whole Sign and Equal houses every house spans exactly 30°. In Placidus, the system most software uses, house sizes change with your birth time and grow more uneven the further you were born from the equator. In New York the 4th house ranges from 21° to 37°; in London from 17° to 40°. When a house is wider than a sign, it can hold a whole sign that touches neither cusp, an intercepted sign, which some astrologers read as a theme that takes longer to express.

Size of the 4th house in Placidus houses over one full turn of the sky
Birthplace	Smallest	Largest	Share of birth times with an intercepted sign
Quito (0°N)	28°	33°	2%
Cairo (30°N)	23°	35°	5%
New York (40.7°N)	21°	37°	8%
London (51.5°N)	17°	40°	11%
Stockholm (59.3°N)	13°	44°	16%
Sydney (33.9°S)	22°	35°	6%

Calculated with the same house engine as our birth chart calculator, checked against the Swiss Ephemeris, sampling every half degree of sidereal time.

How to find your 4th house

You need your birth date, exact time and place. Enter them in the birth chart calculator and look at the house list: it shows the sign on the 4th house cusp and any planets inside it. Then find the planet that rules that sign and see which house it sits in. That planet, the 4th house ruler, is where astrologers say 4th house matters lead you.

Questions

What does the 4th house represent in astrology?

The 4th house represents home, family, roots, ancestry and private life. In most house systems it begins at the IC, the lowest point of the chart. Astrologers also link it with one of the parents, with property and with the end of matters, the foundation everything else rests on.

What is the IC in astrology?

The IC, short for Imum Coeli, is the point of the ecliptic directly opposite the Midheaven. In Placidus, Porphyry and most quadrant systems it is the cusp of the 4th house. It is read as your roots and inner foundation, the most private of the four angles.

Which planet rules the 4th house?

In the natural zodiac the 4th house is paired with Cancer, so its natural ruler is the Moon. In your own chart, the ruler of your 4th house is the planet that rules the sign on its cusp, and astrologers read where that planet sits to see where 4th house matters lead.

The other houses

All twelve houses in astrology