Big Barndoor Island: History, Life, and Homes on Winnipesaukee

# Big Barndoor Island: A Lake Winnipesaukee Gem with a Story Worth Knowing

If you have ever stood on the Wolfeboro town docks and gazed out across the sparkling water, you have almost certainly looked at Big Barndoor Island without realizing it. Sitting roughly two miles from Wolfeboro Harbor, it is one of the most recognizable island silhouettes on the southeastern end of Lake Winnipesaukee. Wooded, private, and quietly magnetic, Big Barndoor has a history that stretches from 18th-century town lines to grazing cattle to a tight-knit community of around 60 families who call it their summer home.

Before we go further, a quick note on names: there are actually two Barndoor islands on Lake Winnipesaukee. Big Barndoor Island is the main event, an 88-acre island in Alton, New Hampshire. Little Barndoor Island is a smaller, separate island of about 6 acres nearby. When people casually say "Barndoor Island," they almost always mean the larger one, and that is the island this post is all about.

Officially Alton, Visually Wolfeboro

Here is a quirky geographic fact that surprises a lot of visitors. Big Barndoor Island carries an Alton, New Hampshire address, even though it looks and feels like a Wolfeboro island. The explanation goes back to 1799, just three years after Alton was incorporated, when Barndoor Island was officially annexed to Alton. Historical maps from that era were not always consistent about exactly where the town line ran, and one old atlas reportedly drew the Wolfeboro/Alton boundary straight through the middle of Little Barndoor Island.

So the island has always occupied a kind of in-between identity: officially Alton, geographically just off Wolfeboro Bay, and culturally tied to both towns. For visitors and renters, the practical takeaway is that Wolfeboro Harbor is your best jumping-off point, with the island sitting about a five-minute boat ride away, depending on your vessel and the conditions.

Before There Were Cottages, There Were Cows

This is the part of the story that makes Big Barndoor genuinely memorable. Before the island had summer cottages, it had cattle.

The island's community sources confirm that Big Barndoor was once used as summer grazing land, with livestock ferried over by boat to take advantage of the island's open pasture and fresh growth. The most detailed chapter of that story centers on Ralph Carpenter, who owned the entire island during the 1940s and 1950s. Carpenter, then director of New Hampshire Fish and Game, kept cows on Big Barndoor to supply fresh milk. He built a large barn on the south side of the island, and local accounts add a wonderful texture to that detail: the barn is said to have been constructed using timber harvested right on the island itself.

When the island was later subdivided and developed, the old barn was sold and renovated into a summer home. It still stands today in modified residential form, a quiet architectural footnote to the island's agricultural past.

As for the name itself, no definitive origin has been confirmed. One piece of colorful local lore holds that from a certain angle on the water, Big and Little Barndoor appear to frame the view of a large barn door on the mainland behind them, giving the islands their name. Whether that explanation is history or storytelling, it fits the spirit of the place.

Island Life Today

Big Barndoor is the tenth-largest non-bridged island on Lake Winnipesaukee, and today it is home to approximately 60 families who return season after season. The island has no bridge. Access is entirely by boat, which is a significant part of its appeal. That short ride from Wolfeboro creates just enough separation from the mainland to make every arrival feel like a small adventure.

The shoreline is mostly rocky, with sandy swimming areas on select properties. Many homes enjoy southwestern and western exposure, which translates to long evening light and some of the finest sunset views on the lake. Mountain silhouettes frame the horizon, and the open water stretching toward Alton Bay adds to the sense of space.

Private docks, deep-water access, and quiet wooded lots are the hallmarks of island living here. Some properties have interior walking trails, though these are private, island-community amenities rather than public paths. Big Barndoor is not a park or a public beach island, so visitors who want to appreciate it up close are best served by booking a stay at a listed property or simply cruising by on the water.

Properties for Sale on Big Barndoor Island

Opportunities to own on Big Barndoor are genuinely rare. The island is small, the community is established, and turnover is slow. When properties do come to market, they tend to generate serious interest. Here is a look at what is currently listed and recently offered.

116 Big Barndoor IslandUnder Contract

• Price: $1,435,000
• Beds: 2 | Baths: 1
• Square feet: 850
• Acreage: 0.73 acres
• Year built: 2023
• Waterfront: Lake Winnipesaukee

This custom-built timber frame home is one of the newest structures on the island, designed from the ground up to capture panoramic lake and mountain views. The craftsmanship reflects a thoughtful approach to island living, blending natural materials with modern comfort in a package that feels both rooted and refined.

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230 Big Barndoor IslandActive

• Price: $1,470,000
• Beds: 3 | Baths: 2
• Square feet: 1,536
• Acreage: 0.79 acres
• Year built: 1970
• Waterfront: Lake Winnipesaukee

Known as Loon Squire, this beautifully renovated waterfront retreat blends classic lakeside character with thoughtful modern updates. It is move-in ready, which is a meaningful detail on a boat-access island where logistics matter. The renovation preserves the warm, unhurried feel of a true lake cottage while delivering the amenities today's buyers expect.

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348 Big Barndoor IslandActive

• Price: $1,599,000
• Beds: 4 | Baths: 3
• Square feet: 1,935
• Acreage: 0.77 acres
• Year built: 1981
• Waterfront: Lake Winnipesaukee

This furnished island property offers 180 feet of waterfront and a docking system built for serious boaters, with two U-shaped docks accommodating up to three boats. The combination of privacy, sweeping views, and all-day sun exposure makes it one of the most complete offerings the island has seen in recent memory.

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Big Barndoor Island (Land)Sold

• Sold for: $432,500 (listed at $499,000)
• Acreage: 0.76 acres
• Waterfront: Lake Winnipesaukee

For buyers who want to build their own island story from scratch, this deep-water lot offers a rare blank canvas on Big Barndoor. Deep-water access is a meaningful asset here, ideal for buyers who want to design a dock and home around their own boating habits.

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120 Big Barndoor IslandSold

• Sold for: $800,000 (listed at $895,000)
• Beds: 3 | Baths: 2
• Square feet: 1,064
• Acreage: 0.9 acres
• Year built: 1979
• Waterfront: Lake Winnipesaukee

One of the larger lots on the island at nearly an acre, this property sits on the southern shore and captures the spirit of classic island cottage living. Wolfeboro is just a short boat ride away, making it easy to pop over for dinner, ice cream, or a morning farmers market before retreating back to island quiet.

See Full Listing →

Planning a Visit: What to Know Before You Go

Big Barndoor is best appreciated from the water or as a guest of a private property. There are no public beaches, public docks, or public trails on the island, so please do not plan to land casually. That said, a slow cruise around the island's shoreline is a genuinely rewarding experience, especially in the evening when the western light is warm and the mountain views are at their most dramatic.

A great day trip from Wolfeboro might look something like this:

• Launch from Wolfeboro Harbor in the morning
• Cruise out to Big Barndoor for a slow loop around the island
• Swing past Little Barndoor and the Keniston Island area to the northeast
• Return to Wolfeboro for lunch, ice cream on the docks, or a walk through downtown

Note that the water between Wolfeboro and Barndoor can be busy in July and August. Use a current Lake Winnipesaukee chart or GPS, watch for markers, and give working boats and other watercraft plenty of space.

Frequently Asked Questions

Is Barndoor Island the same as Big Barndoor Island?

Usually, yes. When people casually say "Barndoor Island," they almost always mean Big Barndoor Island, the 88-acre island about two miles from Wolfeboro Harbor. There is also a separate Little Barndoor Island, commonly listed at 6 acres, which sits nearby. This post focuses on the larger island.

What town is Big Barndoor Island in?

Big Barndoor Island is officially part of Alton, New Hampshire, even though it sits just off Wolfeboro Bay and is clearly visible from downtown Wolfeboro. The island was annexed to Alton in 1799, just a few years after the town was incorporated, which explains the sometimes-surprising address.

Can you drive to Big Barndoor Island?

No. Big Barndoor has no bridge and no road access. The only way to reach the island is by boat. Some island residents mention crossing on foot over the ice in winter when conditions allow, but that is a local practice and not something visitors should plan around, since ice conditions vary significantly year to year.

Is Big Barndoor Island open to the public?

No. Big Barndoor is a private residential island. There are no public beaches, public docks, or public hiking trails. The best way to experience the island up close is to own or rent a property there, or to cruise around its shoreline by boat from the water.

Were there really cows on Big Barndoor Island?

Yes, and it is one of the best details in the island's history. Multiple sources confirm that Big Barndoor was used for summer cattle grazing. During the 1940s and 1950s, Ralph Carpenter, then director of New Hampshire Fish and Game, owned the entire island and kept cows there for fresh milk. The large barn he built on the south side of the island was later renovated into a summer residence and still stands today.

How much does property on Big Barndoor Island cost?

Island properties on Big Barndoor are rare and tend to command premium prices reflecting the privacy, views, and limited supply. Current active listings range from $499,000 for a waterfront lot to over $1.5 million for a fully furnished four-bedroom home with 180 feet of shoreline and multiple boat docks. Prices reflect both the waterfront setting and the unique appeal of true island living on Lake Winnipesaukee.

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