Open House Co., Ltd. is principally engaged in detached business, brokerage business and other businesses. The Company operates in four segments. The Detached Houses segment engages in construction of detached houses and sale of subdivision land. The Condominium segment engages in development and sale of new apartments. The Revenue Real Estate segment acquires, operates and sells profitable real estate. The Others segment engages in residential related loan business, financial services business, real estate market analysis, sales of real estate.