Contractor of Choice for Condominiums, Townhomes, Apartments, Co-ops and their Managers. BEI Exterior Maintenance brings integrity, knowledge and skill to every client relationship it earns. Accreditations and Memberships: GAF Master Elite Roofing Contractor, Owens Corning Prefered Roofing Contractor, Builders Association of Minnesota, Community Association Institute, Minnesota Multi Housing Association, CIC Midwest, Builders Association of the Twin Cities. Minnesota License # BC241131