My party has recently murdered the 2 wealthiest people in this capital. Both had huge mansions. Incidentally they were both undead so they got a reward.

Not both houses, just the smaller one. Generally the liege Lord doesn't allow people to claim his fiefs as spoils for killing nobility.

Okay, hear me out.

The opposite of a murder hobo is a young couple starting a family.

Homicidal Homeowner