Martha Siwak – St. Louis Luxury Real Estate Agent

World-Class Expertise Backed by Sotheby’s International Realty

Martha Siwak is a distinguished St. Louis luxury real estate agent with The Wells + Michael Collective at Dielmann Sotheby’s International Realty, specializing in Clayton, Ladue, Frontenac, Town & Country, and the Central Corridor. With over 25 years of high-level sales experience and a refined background working at Sotheby’s Auction House in New York City, Martha delivers a world-class standard of service, discretion, and market expertise that consistently exceeds client expectations.

From Sotheby’s Auction House to St. Louis Luxury Homes

Her early career in Sotheby’s jewelry department immersed her in the world of rare art, fine jewelry, and luxury assets while serving high-profile, ultra-high-net-worth clients. This unique foundation translates seamlessly into today’s St. Louis luxury housing market, where Martha represents multimillion-dollar estates, architecturally significant homes, and new construction properties with precision, confidentiality, and a global perspective.

Local Knowledge of St. Louis’ Most Prestigious Neighborhoods

Raised in both Clayton and Ladue, Martha possesses intimate neighborhood knowledge of St. Louis’ most prestigious real estate markets, including Ladue School District homes, Town & Country luxury estates, Clayton condos, and Frontenac gated communities. Having also lived in New York City, Boston, and Chicago, she brings an understanding of metropolitan buyer expectations, relocation needs, and investment strategies, paired with a deep appreciation for the timeless appeal of St. Louis luxury homes.

Entrepreneurial Background and Client-Centered Service

Beyond real estate, Martha is an accomplished entrepreneur, leading two successful manufacturing start-ups for over 14 years. Her commitment to client satisfaction, integrity, and excellence in service has been the cornerstone of her success across every industry. Martha blends her passion for architecture, interior design, and home staging strategies with a concierge-level real estate approach, ensuring that every buyer and seller receives a personalized, seamless, and results-driven experience.

Dedicated to Families, Relocations, and Luxury Sellers

A proud mother of two young adult daughters, Martha embraces life with the same adventurous spirit she brings to her professional career. Whether advising first-time luxury buyers, guiding corporate relocations and out-of-state families moving to St. Louis, or representing sellers of multimillion-dollar properties, Martha is dedicated to delivering record-breaking results while protecting her clients’ privacy, investments, and lifestyle goals.

Backed by The Wells + Michael Collective and Sotheby’s International Realty

Backed by the global reach of Sotheby’s International Realty and the elite performance of The Wells + Michael Collective—St. Louis’ #1 luxury real estate team—Martha Siwak is a trusted partner for those seeking to buy or sell in the most exclusive neighborhoods of St. Louis and beyond.