about Frederick Wallenmaier

Frederick Wallenmaier is one of the Hamptons’ most trusted and innovative real estate advisors. Beloved by his clients for his tenacity, ingenuity, and relentless pursuit of their dream deals, Frederick is known for creating novel opportunities in the Hamptons’ unique high-end markets. His nearly $200 million sales record is a testament to his team’s virtuosity on both the buying and selling sides. Frederick’s devotion to his clients, innate ability to discover unexpected opportunities, and talent for building tailored marketing strategies are evident in his vast network of relationships. Frederick joins OFFICIAL from one of the Hamptons’ top-producing teams.

From closing on a one-of-a-kind home in the heart of Sag Harbor Village at 48 Howard Street before it hit the market, to negotiating the sale of a home in the Georgica Estate section of East Hampton at 35 Baiting Hollow for $6 million, Frederick’s remarkable transactions highlight his persistence, ability to act swiftly, leverage his relationships, and negotiate effectively. His knack for discovering off-market opportunities for his clients, his depth of expertise on the ins and outs of the complexities of the local markets, and his reputation for white-glove service make him a top agent, one whose long-term relationships with clients create extensive referral chains. Before he discovered his passion for real estate, Frederick spent years in the luxury hospitality industry, where he learned the paramount importance of relationship building and white-glove service, know-how that allows him to give clients a truly personalized experience, making him a trusted partner for both buyers and sellers. 

Thrilled by the opportunity to offer his extensive client network OFFICIAL’s array of concierge services and next-level marketing techniques, Frederick joins the firm’s growing Hamptons team as one of the region’s acclaimed advisors, with a history of working with C-Class executives, prominent finance attorneys, and celebrities, and his historic sales covered in Hamptons media outlets like 27 East and Daily Front Row. 

Raised on Long Island, Frederick is a longtime Hamptons denizen with a passion for its culture, community and restaurant scene. He is a lover of architecture and supports Southampton’s Parrish Art Museum, the Animal Rescue Fund and other local charities.