Adjuster Tip: If there is an RCBAP in effect on the building in which the unit is located, the RCBAP is always primary. Building improvements are insured under the RCBAP, even if at the unit owner's expense. In order for such improvements to be insured under the unit owner's Dwelling Form policy, it must be confirmed and documented that there is no RCBAP in effect for the building in which the unit is located.