Centennial Shores in Island Park, Idaho is a gated cabin community tucked along the northwest shore of Island Park Reservoir. For buyers dreaming of a mountain getaway or a rental property in Fremont County, this small subdivision offers something most Eastern Idaho neighborhoods can’t: private, year-round access to a 7,000-acre reservoir surrounded by national forest. It’s a different kind of purchase than a house in Idaho Falls or Rexburg, and buyers should understand exactly what they’re getting before they make an offer.

In This Article

What Makes Centennial Shores Different

Centennial Shores isn’t a typical residential subdivision. It’s a private association of cabin owners governed by an HOA, and the community sits behind a gate on the reservoir’s northwest shore. Members get access to boat docks, boat launches, and two HOA-maintained parks for swimming, picnicking, and fishing. Because the roads stay open year-round, owners can reach their cabins in winter, though most properties function as seasonal retreats rather than full-time residences.

The setting is what sells it. Centennial Shores sits about 30 minutes southwest of Yellowstone National Park’s west entrance and roughly 20 minutes north of Harriman State Park. Henry’s Lake and the Henry’s Fork of the Snake River are both close by, and the surrounding national forest provides direct access to hiking and snowmobile trails right outside the gate.

Getting to Centennial Shores: Location and Access

Island Park sits in Fremont County, north of Rexburg and roughly 90 minutes from Idaho Falls, depending on the season and road conditions. Centennial Shores itself is reached by a private, gated road maintained by the HOA, which keeps it accessible even after heavy snowfall. That said, buyers relocating from a city should expect a genuinely rural commute. Grocery stores, hardware stores, and medical care are a drive away in Ashton or Rexburg.

For buyers who split time between a primary home in Idaho Falls and a cabin here, that drive is part of the appeal rather than a drawback. Those exploring the broader area first might want to start with our guide to living in Idaho Falls before deciding how a second home in Island Park fits into the picture.

Homes, Cabins, and Lots in Centennial Shores

Properties in Centennial Shores range from existing cabins to vacant lots ready for new construction. Because it’s a lakefront gated community, lot sizes tend to run larger than a typical Idaho Falls subdivision, often two acres or more, with several backing up to open ranch or forest land. Buyers looking to build should know the HOA reviews and approves every new construction project and driveway addition before work begins, and the CC&Rs prohibit sheds and other outbuildings.

Fire safety rules are strict here, too. Open burning is limited to approved fire pits that meet Fremont County’s specifications, and fireworks are banned throughout the subdivision. These rules exist because Centennial Shores sits inside forested, fire-prone terrain, so buyers should factor them into how they plan to use the property. For anyone comparing ground-up construction options across the region, it’s worth browsing new housing developments in Eastern Idaho to see how build timelines and rules differ from one community to the next.

Life on Island Park Reservoir: Amenities and Recreation

Island Park Reservoir spans roughly 11 square miles with about 64 miles of shoreline, and it draws anglers year-round. Rainbow trout, cutthroat trout, kokanee salmon, perch, and bluegill all live in these waters, and winter brings ice fishing near the dam. Summer months bring boating, kayaking on the Henry’s Fork, and swimming at the HOA parks.

A few things stand out about what ownership here actually includes:

  • Private boat docks and launch access for HOA members
  • Two community parks for swimming, picnics, and shoreline fishing
  • Direct access to national forest trails for hiking and snowmobiling
  • Proximity to Yellowstone, Harriman State Park, and Henry’s Lake
  • A year-round maintained road, even though most owners use their cabins seasonally

Many owners rent their cabins out when they aren’t using them. Fremont County requires a rental permit for short-term rentals, so buyers planning to generate income from the property should budget time to complete that paperwork before listing it.

How Centennial Shores Compares to Other Island Park Communities

Island Park has several cabin communities along its lakes and rivers, and each has its own character. Some sit closer to Henry’s Fork and cater more to fly fishing access, while others emphasize snowmobile trail access in winter. Centennial Shores stands out for its reservoir frontage and its private parks, which give owners guaranteed access to the water without relying on public boat ramps that can get crowded in July and August.

Buyers cross-shopping Island Park against other Eastern Idaho options should also weigh lifestyle differences. A cabin here means embracing a seasonal, recreation-first pace of life. A home closer to Idaho Falls or Rexburg offers year-round conveniences and a shorter commute to work, schools, and shopping. Both can make sense, but they solve different problems.

Who Centennial Shores Fits Best

Centennial Shores works well for buyers who want a dedicated vacation property near Yellowstone, anglers and boaters who want reservoir access without a long drive to a public launch, and investors interested in seasonal short-term rentals. It’s a tougher fit for buyers who want a full-time primary residence close to jobs, schools, or daily errands, since the nearest services sit a real drive away.

Financing can also look different for a recreational cabin than for a primary residence, so buyers should talk with a lender early about loan types and down payment requirements for second homes or investment properties in a rural, gated community like this one.

Frequently Asked Questions

Is Centennial Shores a good full-time residence?

Some owners do live there year-round since the HOA keeps the road open through winter, but most cabins function as seasonal retreats. Buyers planning to live there full-time should visit in winter first to see what daily life and commute times actually look like.

Can I rent out my cabin in Centennial Shores?

Many owners do rent their cabins, but Fremont County requires a rental permit before you can legally offer short-term stays. The HOA also has its own rules for renters, so review both sets of requirements before you buy if rental income is part of your plan.

Is Centennial Shores a gated community?

Yes. It’s a private, gated subdivision with HOA-controlled access, and the association also maintains two parks and shared boat launch facilities for members.

What HOA rules should I know before buying?

The HOA requires board approval for new construction and driveway additions, bans sheds and similar outbuildings, prohibits fireworks, and restricts open burning to code-compliant fire pits. Buyers should request a copy of the CC&Rs during due diligence.

Does Idaho’s non-disclosure rule affect buying in Centennial Shores?

It can. Idaho is a non-disclosure state, which changes how much sellers are required to volunteer about a property’s condition. Our Idaho non-disclosure state guide walks through what that means and why a thorough inspection matters, especially for older cabins.

Work With a Local Eastern Idaho Real Estate Expert

If you’re considering a cabin or lot in Centennial Shores, it helps to work with an agent who actually knows the area. Valorie Blanchard of Valorie’s List @ Idaho’s Real Estate is a lifelong Eastern Idaho resident, born in Rexburg and raised on a family farm that’s been in her family since the 1800s. She’s an Associate Broker and GRI Graduate with a decade of experience helping buyers and sellers throughout Idaho Falls, Rexburg, and the surrounding communities, backed by a strong digital marketing background and firsthand knowledge of the local market. Learn more about Valorie or reach out directly for current listings.

Is Centennial Shores in Island Park, Idaho Right for You?

Centennial Shores in Island Park, Idaho offers something rare in this region: gated, private access to a major reservoir surrounded by national forest and just a short drive from Yellowstone. It suits buyers looking for a recreational second home, a rental property, or an eventual retirement retreat more than it suits someone needing a quick commute to work. Understanding the HOA rules, the seasonal nature of the community, and the local rental requirements before you make an offer will help you decide whether this stretch of shoreline is the right fit for your next purchase.