Planets in houses · Kendra
Mangal in the 4th house
Mars · Sukha Bhava
Mangal is the karaka (significator) of energy, courage, siblings and property. The 4th house, called Sukha Bhava, shows home, mother and happiness. When Mangal sits here, these matters take on its colour.
In the 4th house a malefic can disturb peace at home or with property, and asks one to build inner calm.
The 4th house is a kendra (angular house), a pillar of the chart, so a graha here shows its results openly and strongly.
The 4th house is opposite to where Mangal gets directional strength, so it loses some power here.
Mangal gives its best results here when it is exalted in Makara, in its own sign (Mesha and Vrishchika) or in a friendly sign, and when it is not combust.
Results are weaker if Mangal is debilitated in Karka, combust, or afflicted by malefics.
In transit (gochar)
When Mangal transits the 4th house counted from your Moon sign, the period traditionally needs more care.
A single placement is never read alone: sign, aspects, conjunctions, dasha and the whole chart change the outcome.