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equal house system

Within Western Astrology there are several house systems used by astrologers. Personally I use the equal house system, my teacher uses it, the Faculty of Astrology uses it. But most of all it resonates with me. I will explain you a little bit more about the equal house, whole sign and placidus house systems.

Equal House System this is my preferred system

What it is:

  • The Ascendant always marks the start of the 1st house
  • Then, each house is exactly 30° after that, regardless of sign boundaries
  • So if your Ascendant is at 20° Virgo, your 2nd house starts at 20° Libra, and so on

Where it comes from:

  • It’s an ancient system, used in Hellenistic astrology alongside Whole Sign
  • Was revived in medieval and Renaissance astrology
  • Still popular in psychological, esoteric, and Vedic approaches today

Why it makes sense:

  • It keeps the Ascendant personal, anchoring it to your true rising degree
  • It acknowledges that your identity (1st house) is not the whole zodiac sign, but a unique slice of it
  • You still get to experience multiple signs within one house (like Pisces–Aries in 7th), which can feel more true in real life

For me this fits my experience. I can feel the mix of signs in a house, while not oversimplifying personality or relationships. I also like that it’s not too abstract or rule-heavy.

Whole Sign Houses: currently trendy, especially in traditional astrology

What it is:

  • The sign of your Ascendant becomes the whole 1st house, no matter the degree
  • So if your Ascendant is 20° Virgo, the entire sign of Virgo is the 1st house, Libra the 2nd, and so on

Where it comes from:

  • This is the oldest house system, used in Hellenistic astrology (~2nd century BCE)
  • Was forgotten in the West for a long time, but revived in the 1990s–2000s by traditional astrologers

Why some people like it:

  • It simplifies charts, making prediction (e.g. annual profections, transits) more direct
  • Clear boundaries: one sign per house
  • Easier to use for timing techniques like Zodiacal Releasing, Solar Returns, etc.

Critiques (from my POV):

  • It feels too black-and-white, suddenly your entire 7th house is just Pisces, not Pisces and Aries
  • Ascendant degree is lost as the anchor which to me feels less personal
  • Can make people obsess about literal 3D questions (“will I have 7 kids?”), because it emphasizes traditional meanings like marriage, children, death, etc.

It feels too general or flattened. I would say the experience of life is more nuanced.

Placidus: the most commonly used modern system

What it is:

  • A time-based system that divides houses by how long it takes signs to rise over the horizon
  • House cusps are irregular (not 30° each), and in far northern/southern latitudes, houses can get distorted

Where it comes from:

  • Developed in the 17th century by Placidus de Titis (Italian monk and mathematician)
  • Became the default in modern Western astrology, especially psychological astrology

Why some people like it:

  • Brings nuance to internal dynamics and timing
  • Feels more psychological, suited to therapy and introspective work
  • The Midheaven (MC) is used as the actual 10th house cusp (vs Whole Sign / equal where MC can fall in a different house)

Critiques (from my POV):

  • Can get mathematically messy, especially in high latitudes (e.g. Scandinavia, Alaska)
  • Some houses get huge and others get tiny which can be hard to interpret
  • Feels too abstract or confusing if you want to feel the real energy of signs flowing

For me it is a little too much. I like clarity, symbolism that works viscerally, and a system that aligns with lived reality.

Why Equal house system makes intuitive sense for me:

  • I experience life as flowing, not stuck in one sign per house
  • I feel the energy of sign transitions in each area (e.g., relationships that move from Pisces to Aries – dreamy to assertive)
  • I want a house system that is logical but intuitive, symbolic but grounded
  • I honor the Ascendant as the truest beginning of your life story, not just “a sign”
share your thoughts down below ★