NEW YORK, NY--(Marketwired - Mar 30, 2015) - Integra Realty Resources (IRR) and National Bureau of Property Administration (NBPA) today announced a partnership to provide commercial property tax appeal services to their respective clients nationwide.�Through the partnership, IRR's clients will gain streamlined access to an established leader in commercial real estate (CRE) tax appeal services, and NBPA's clients will be able to more efficiently access the CRE market research, appraisal, and consulting services which IRR offers through its 65 offices across the nation.