A condominium unit is where you live. This is your home. Legally, the unit is the portion of the condominium corporation that is owned by the owner (as opposed to being jointly owned by all owners). In condominiums, determining the boundaries of the unit, the repairs and maintenance of the unit, and the insurance on a unit can all be complicated since the unit is physically attached to the rest of the building. These divisions are laid out in the corporation’s Declaration.