A once-in-a-lifetime opportunity to own a private island paradise in the heart of Ontario's cottage country on Loughborough Lake, South Frontenac.
A private 7-acre retreat surrounded by open water, Crown land, and tranquility. Horseshoe Island is a truly exceptional private island nestled on one of South Frontenac's most beautiful lakes in Ontario, Canada. Surrounded by pristine waters and untouched Canadian Shield landscape, this turnkey retreat offers the ultimate in privacy, natural beauty, and lakeside living.
Whether you envision a family legacy property, a private getaway, or an exclusive retreat — Horseshoe Island delivers an experience that simply cannot be replicated on the mainland.
Two Properties. One Seamless Island Experience.For those seeking ultimate privacy, convenience, and natural beauty, what could be more perfect than the rare combination of a private island with a private mainland boathouse and garage, on a premier lake in a UNESCO-designated region.
Loughborough Lake, less than half an hour north of historic Kingston, is one of the Frontenac Region's premier lakes, known for its natural beauty, established cottage community, and impressive 24-kilometre length with a varied shoreline.
Your experience begins on the mainland at a sought-after location by the Battersea public launch. A four-car garage with attached boathouse provides secure storage for vehicles, boats, and lake gear, making island living simple and well organized.
From the boathouse, a short and scenic boat ride leads to the heart of the offering: your private 7-acre island, surrounded by untouched Crown land and uninhabited islets, offering exceptional privacy and a setting reminiscent of a provincial park.
The main cottage features a sunlit great room with vaulted ceilings and a beautiful stone fireplace. The screened-in porch offers a dining/living area with expansive lake views, while multiple deck and patio conversation areas make outdoor living effortless and inviting.
The island comfortably accommodates over 15 guests, making it ideal for extended family gatherings, corporate retreats, or quiet getaways. Sleeping quarters in the main cottage include a loft bedroom, three additional large bedrooms, and a spacious primary suite, two well-appointed hilltop guest cabins, and a private bunkie.
The two beautifully-appointed separate hilltop guest cabins feature all the amenities needed for a comfortable stay. Both have large suites, plus easy access to both indoor and outdoor facilities.
The island retreat also features a separate hideaway bunkie located at the tip of the island, complete with its own lookout balcony, dock, firepit, and wide-open views, accessible by foot or paddle.
Private islands, Crown land, and protected shoreline help preserve Loughborough Lake's natural beauty and traditional cottage-country feel, while excellent fishing, swimming, paddling, and boating make it an enduring lake destination.
Lovingly maintained since the 1930s and held by only its second set of owners, the property also includes two outbuildings with endless possibilities for workshops or creative use.
Together, the mainland access point and private island create a rare, well-balanced offering -- easy to reach, quietly self-sufficient, and deeply connected to the landscape.
The mainland boathouse is your seamless connection between everyday life and island paradise. This well-maintained facility provides secure boat storage, a private dock, and ample parking — making every trip to Horseshoe Island effortless.
With direct lake access and room for multiple watercraft, the boathouse ensures you’re always just a short, scenic boat ride away from your private retreat. It’s the perfect launchpad for island living.
Inquire About the Property →Horseshoe Island is a rare offering that must be experienced in person. We invite serious buyers and interested parties to arrange a private viewing and discover the magic of this extraordinary property firsthand.
Our team will coordinate a personalized tour of the island, its buildings, and the mainland boathouse at a time that suits you.
Book a Viewing →