David Koster

Executive Vice President | Licensed Real Estate Broker David is a seasoned real-estate executive with more than 20 years of industry experience, including 16 years as a licensed Real Estate Broker. He founded and led a brokerage that closed over $1.5 billion in sales before its acquisition by Sotheby’s International Realty in 2020, where he now serves as an Executive Vice President. Career Highlights Brokerage Leadership: Managed and mentored a team of 150 sales agents for nearly a [...]

Executive Vice President | Licensed Real Estate Broker David is a seasoned real-estate executive with more than 20 years of industry experience, including 16 years as a licensed Real Estate Broker. He founded and led a brokerage that closed over $1.5 billion in sales before its acquisition by Sotheby’s International Realty in 2020, where he now serves as an Executive Vice President. Career Highlights Brokerage Leadership: Managed and mentored a team of 150 sales agents for nearly a decade, handling daily inquiries, resolving conflicts, negotiating complex transactions, and maintaining rigorous ethical standards. Record Transaction Volume: Responsible for $1.5 billion in cumulative sales, a performance that attracted acquisition by a global luxury brand. Luxury Development Expertise: Directed the successful development of a 20,000 sq ft luxury townhome project, overseeing every phase from concept to completion. Advisory & Consulting: Provides developers with comprehensive market analyses, go-to-market strategies, and full-scope marketing campaigns; advises commercial investors on due-diligence, market positioning, and pro-forma modeling. Pre-Construction Specialist: More than two decades of niche expertise in acquiring, marketing, and brokering pre-construction condominium residences. Digital Innovation: Founded PenthouseLife.com, the leading online marketplace dedicated exclusively to penthouse properties. Credentials & Designations B.B.A. in Information Systems Licensed Real Estate Broker & REALTOR® (DBPR) Accredited Buyer’s Representative (ABR®) Real Estate Negotiation Expert (RENE) Resort & Second-Home Property Specialist (RSPS) Master Brokers Forum member (South Florida chapter) Recognition David’s production record and commitment to professional integrity have earned him membership in South Florida’s prestigious Master Brokers Forum and coverage in leading media, including Miami Agent Magazine (“Who’s Who”), the South Florida Business Journal (“People on the Move”), The Real Deal, Aventura Magazine, Haven Lifestyles, and the duPont Registry. David pairs deep market knowledge with strategic vision, delivering exceptional results for clients, agents, and investors across the luxury real-estate spectrum.