Is it permissible for the household and relatives to eat from the votive sacrifice made upon moving into a new house and buying a new car, and is it a condition that the sacrifice be made at the house or is it permissible anywhere?

Suspending a vow with an "if God wills" clause is considered a contingent vow. Scholars have differed regarding its ruling: the majority opinion is that such a vow is not binding when an exception is made, whereas the Maliki school holds that it is obligatory to fulfill it. Your vow is specific, and you may choose to fulfill it or not, based on the opinion of the majority, while it is permissible to eat from the slaughtered animal and distribute it. Slaughtering an animal is permissible as an act of gratitude to God, but it is forbidden if done to repel jinn or the evil eye.