Boulder Bridge Farm

A Historic Gentleman’s Farm on Lake Minnetonka’s Smithtown Bay

A Place Where the Land Still Remembers

There is a place along the southern curve of Smithtown Bay where history is not archived behind glass — but alive in the stones, the shoreline, and the whisper of trees leaning toward the water. This is Boulder Bridge Farm, located in Shorewood, Minnesota, nestled within the Minnetonka School District and proudly bearing an Excelsior address — 55331.

A Beginning: Rose Farm and the Vision of Edmund Longyear

The story begins in 1906, when Edmund J. Longyear — the celebrated mining entrepreneur whose explorations helped shape America's Iron Range — founded a gentleman’s farm he called Rose Farm. Like many estates of the time, it was a place of beauty and purpose, operated for pleasure rather than profit. On its rolling grounds, Longyear built a commanding 10,000-square-foot Dutch Colonial home with two wings, situated along the tranquil shores of South Upper Lake Minnetonka. The George F. Cook Construction company built the home for approximately $18,000 at the time according to George F. Cook III. A new barn was also raised, establishing the agricultural heart of the estate. The setting offered a perfect blend of open prairie, orchards, and lakefront — a private world within reach of the growing Twin Cities.

The Dayton Era: Growth and Stewardship

In 1926, George Nelson Dayton and Grace Dayton, seeking a summer retreat for themselves and their five young sons, purchased Rose Farm. Over time, they expanded the property from its original 90 acres to nearly 800 acres, weaving together farmland, woodlands, shoreline, and private trails. It was George Dayton who renamed the estate Boulder Bridge Farm — honoring the stone arch bridge on the property and capturing the enduring nature of the place.

Boulder Bridge Farm became a model of stewardship and refined agricultural living. The Belgian draft horses, Tennessee Walkers, and prize-winning Guernsey dairy cattle were cared for in immaculate stables and barns. The farm’s operation reflected the Dayton family's hallmark values of excellence, discipline, and quiet grace. Farmhands, dressed in crisp white uniforms, milked cows by hand, maintained immaculate grounds, and bottled fresh milk that was ferried daily to the Dayton Tea Room atop the family’s iconic department store in Minneapolis.

Saturday mornings brought a ritual of horseback rides around the estate, with Tennessee Walkers saddled and ready at the appointed hour. Sundays, however, were kept sacred. No chores disturbed the day — a reflection of the family's deep faith and respect for rest.

The Transition: From Private Estate to Private Community

By the mid-20th century, as Minnesota changed, so too did Boulder Bridge Farm. In 1976, real estate developer Thomas Wartman purchased approximately 90 acres of the estate. With careful planning, the land was thoughtfully transformed into the Boulder Bridge neighborhood — preserving much of the estate’s original spirit.

Today, Boulder Bridge features 44 luxury homes woven into 20 acres of common land. Residents enjoy amenities that honor the estate’s heritage, including a private sand beach, tennis courts, playgrounds, and direct access to Lake Minnetonka’s timeless waters. Dockage opportunities maintain the tradition of lake life that has defined the property for over a century.

Living Legacy: Boulder Bridge Today

Walk the neighborhood paths today and you can still feel the heartbeat of Boulder Bridge Farm. The original stone bridge endures, weathered but strong, arching quietly over a stream that once nourished pastures and orchards. The land’s gentle contours, the shade of century-old oaks, and the distant sparkle of Minnetonka’s waters remain unchanged.

Boulder Bridge is not just a place to live — it is a place to belong. A place where legacy, landscape, and lifestyle meet in quiet harmony.

Discover Access, Legacy, and Lifestyle on Lake Minnetonka

At Lake Minnetonka Real Estate, we honor properties like Boulder Bridge Farm — places where history lives on not through monuments, but through the care of those who come after. We do not just offer homes. We offer access: to lake life, to legacy, and to a deeper sense of belonging.

If you are considering buying or selling a property like Boulder Bridge Farm — whether on the market or quietly off — we invite you to begin a relationship with us. Much of Lake Minnetonka’s most significant real estate trades privately. Discretion, timing, and trusted relationships make all the difference.  When you are ready, we are here.