6 Bedroom Narrow Lot Duplex House Plan If you’re looking for a duplex house plan that delivers two practical family homes without requiring an excessively wide block, our new 248DU 6 Bedroom Duplex Design is worth a closer look. This modern single-storey duplex combines two separate 3-bedroom residences within an overall building area of approximately 245.2 m² / 2,640 sq ft. With private garages, separate entries, generous living areas and outdoor alfresco spaces, the design