Riehm Owensby Planners Architects Share: Architects & Architectural Illustrators/Planners Riehm Owensby Planners Architects P.O. Box 390747 Keauhou, HI 96739-0747 (808) 322-6115 (808) 322-3391 (fax) About Rep Info Map About We offer a full range of architectural and land planning services. Since 1990, the Firm has produced some of West Hawaii's most distinguished and award winning commercial and residential architecture. Whom to Contact Michael Riehm What's Nearby? Distance: 5 10 15 20 25 50 mi.