House overlays answer where
Planet-to-planet aspects show how two energies interact. House overlays answer a different question: where does this person land in my life? A planet in your 5th house may feel romantic or playful. A planet in your 10th house may activate ambition, reputation, or responsibility.
This is why the same planet can feel different in different charts. Someone's Venus may bring delight to one person and practical support to another, depending on which house it activates.
Personal planets are easiest to feel
Sun, Moon, Mercury, Venus, and Mars overlays are usually easier to notice in daily relationship life. The Sun may draw attention to the house it enters. The Moon may make that area emotionally sensitive. Venus may sweeten it. Mars may energize or irritate it. Mercury may create conversation around it.
Outer planet overlays can matter too, especially in close relationships, but they often work more slowly. They may describe transformation, awakening, idealization, or long-term change in a particular life area.
Birth time matters here
House overlays depend on accurate birth time and place. If the birth time is missing or guessed, the houses may shift. That can change whether someone's Moon lands in your 6th house or 7th house, which changes the reading significantly.
When time is uncertain, use house overlays as possible clues rather than fixed conclusions. Planet-to-planet aspects will often be more reliable than exact house placement.
Read overlays with consent and context
House overlays can feel intimate because they describe where another person affects your life. They should be read with care, not used to claim ownership over someone else's role in your chart.
The most useful reading asks: what part of life does this connection awaken, and how do we handle that area with respect? That keeps the house overlay grounded in lived experience instead of turning it into a label.
Related chart guides
Keep reading the pattern
Read your own chart
The clearest way to understand a pattern is to see where it appears in your own relationship chart.
Create a Compatibility Chart