Western astrology methods

Derived Houses

Derived Houses explains transparent house counting from a named person or topic. Inclusive counting 7 → 8 → 9 assigns the topic to the radical 9th house.

Term
Derived Houses

Editorially reviewed: · Reviewed by OpenFate · Editorial Methodology

Overview

Derived or turned houses rotate house counting from a clearly named reference person or topic, so the reference point and counting direction must remain explicit. The page separates calculation from interpretation and keeps this worked result conditional: inclusive counting 7 → 8 → 9 assigns the topic to the radical 9th house. Verification follows this declared method: For a partner’s finances, start from the seventh house and count its second as the radical eighth, showing every step rather than relabeling the chart silently.

At a glance

Topic
Derived Houses
Method family
Derived Houses · traditional and specialist methods
Case inputs
question concerns a spouse’s sibling; spouse starts at the 7th house; sibling is the 3rd from that house
Measured finding
inclusive counting 7 → 8 → 9 assigns the topic to the radical 9th house
School frame
Derived Houses · traditional procedural method
OpenFate tools
Derived Houses · knowledge reference only

Definition and exact scope

derived or turned houses rotate house counting from a clearly named reference person or topic, so the reference point and counting direction must remain explicit

Calculation or decision rule

for a partner’s finances, start from the seventh house and count its second as the radical eighth, showing every step rather than relabeling the chart silently

Worked case and illustrative near miss

question concerns a spouse’s sibling; spouse starts at the 7th house; sibling is the 3rd from that house. inclusive counting 7 → 8 → 9 assigns the topic to the radical 9th house.

Illustrative near miss: Adding 7 + 3 and choosing the 10th house skips inclusive derived-house counting.

School and variant boundary

Tables and procedures differ by author, era, translation, and sect; the selected authority must remain visible.

Product, safety, and verification boundary

OpenFate presents Derived Houses as a sourced knowledge method and does not claim a dedicated calculator or generated reading for it. Verification retains failed measurements and uncertainty, then revises interpretation rather than the receipt. Derived Houses cannot diagnose a person, remove consent, or guarantee an event.

Sources and editorial basis

  1. NCGR-PAA Level II Curriculum
    Level II PDF p. 4, line 115, “Derived Houses”.A professional curriculum naming sign classifications, five levels of rulership, reception, dispositors, sect, minor aspects, declination, antiscia, fixed stars, lots, and time-lord systems.
  2. William Lilly: Christian Astrology, Books I and II
    Book II house-question examples and turned-house judgments; pp. 179–191.A public scan of a seventeenth-century primary text used to verify Lilly-era terminology, tables, and worked rules without presenting that historical system as universal.
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