STEMMONS Multi-Family - Version 4.51 STEMMONS Multi-Family was designed by real-estate professionals, and combines a powerful accounting engine with a complete property management system. It's perfect for apartments, condominiums, multi-family complexes, or portfolios of single-family or duplex properties. STEMMONS Multi-Family quickly automates your properties, managing tenants, vendors, employees & maintenance, balancing your checkbooks, and much more. Accurate, dependable accounting keeps your books in top shape, provides a secure audit trail and generates high-quality, flexible financial and management reports.