If B chooses not to live in a property left to A and B as tenants in common, can he demand an accounting?

In a tenancy in common, each co-tenant has an ownership interest in the property, which allows them to occupy and use the property. However, just because one co-tenant, in this case B, chooses not to live in the property does not necessarily entitle him to demand an accounting from the other co-tenant, A.

An accounting is typically sought when one co-tenant alleges that the other is wrongfully benefiting from the property to the detriment of the other co-tenant. In situations where there is no allegation of wrongdoing—such as mismanagement of the property, failure to share costs, or expenditures made by one party that were not shared—there isn't a sufficient basis for B to claim an accounting merely because he is not living there.

Additionally, if A is managing the property appropriately and there are no profits being withheld, B's choice to live elsewhere does not in itself suggest that A is unjustly enriched or improperly handling the property. Thus, the correct understanding is that B generally cannot demand an accounting solely based on his decision to not occupy the property.