4 Windmill Hill rd - Knollwood Estate 29,927 SF Specialty Building Offered at $9,999,000 in Dublin, NH 03444

Knollwood is a once-in-a-century opportunity to acquire one of New England’s most storied private estates—a property with extraordinary commercial potential for the right visionary operator. Built in 1900 by Franklin MacVeagh, U.S. Secretary of the Treasury, and later acquired by Ernest Henderson, founder of Sheraton Hotels, Knollwood has had only two owners in its 124-year history. From 1910 to 1913, President William Howard Taft used it as his occasional Summer White House, hosting summits & gatherings that helped shape the nation. In the same era, Mark Twain spent weeks here reading Huckleberry Finn to guests in its grand rooms.
Perched high on a ridge of Mount Monadnock, the property offers sweeping 40-mile views across 100+ acres of rolling lawns, forests, orchards, and a boutique vineyard. The Georgian-style, museum-like residence offers 14,500+ sq. ft., 13 bedrooms, 9.5 baths, a 26-seat dining room, multiple parlors, a library, terraces, and a spectacular 120-person ballroom with a built-in stage—purpose-built for large gatherings, receptions, retreats, and events. Additional structures include a 3-garage with apartment above and a historic 3-stall barn.
Current Zoning:
Knollwood is presently zoned Residential. However, its scale, layout, and legacy infrastructure present a unique pathway for buyers seeking to pursue a boutique hospitality venture, subject to town approvals and special exception (Seller and Seller's agent make no warranties or guarentees). Potential concepts include:
• Luxury country inn or boutique hotel
• High-end wellness or spa retreat (similar to Miraval, Twin Farms, or Auberge Resorts Collection)
• Wedding & events venue
• Corporate or university retreat center
• Leadership institute or writers’ residency
• Culinary/agritourism destination with vineyard expansion
Buyers are advised to perform due diligence with the town regarding potential use cases.
Location:
Only 2 hours from Boston and 13 miles from the Keene Dillant-Hopkins Airport, which accommodates private jets. The region attracts visitors for hiking, arts, fall foliage, skiing, golfing, and the internationally renowned MacDowell artist colony—making Knollwood a compelling year-round destination.
Knollwood is listed on the U.S. National Register of Historic Places, offering a strategic brand advantage for hospitality operators seeking a flagship New England property with global narrative appeal.
This is more than real estate; it is a rare platform for a visionary developer or operator to create a legacy destination with heritage branding, unmatched scenery, and deep cultural significance.