Choose your Grant Island experience.
Start with the stay or start with the adventure. Get information on cottage-style island stays, or jump straight to the boats, ATVs, Jet Skis, and gear rentals that make Brantingham Lake your Adirondack basecamp.
Choose your path
Cottage Stays or Adventure Rentals. Choose Your Path.
Grant Island is a boat-in private island vacation experience on Brantingham Lake in the Adirondacks. Start with cottage-style island stays, tiny-cabin options, waterfront glamping, and houseboat stays, or choose the adventure rental path for boats, Jet Skis, ATVs, UTVs, kayaks, SUPs, canoes, and more.
Cottage Stay Inquiry
For guests who want private island vacation details before choosing the right Grant Island stay setup.
- Private island vacation information
- Cottage-style stays, tiny cabins, glamping, and houseboat options
- A simple inquiry path before booking
Vehicle & Boat Rentals
For visitors who want to reserve the gear, watercraft, and trail-ready rentals that make the trip more fun.
- Boats, Jet Skis, ATVs, UTVs, and more
- Reserve rentals and experiences online
- Online booking and rental details
Why guests love Grant Island
A lake getaway that feels like an adventure before you unpack.
A private island vacation should feel memorable from the first click. Unlike standard Adirondack cabins or lake cabin rentals, Grant Island combines cottage-style stays, tiny cabins, lake access, adventure rentals, and a simple two-path planning flow.
Waterfront escape
Brantingham Lake views, docks, water access, and fresh-air downtime.
Unique island stays
Choose the kind of stay that matches your group and trip style.
On-site adventure
Boats, trail rentals, lake gear, and experiences help shape the trip.
Clear next step
Choose the cottage inquiry path or the vehicle rental path without extra steps.
How the island works
Boat-in arrival, island orientation, then the lake is yours to enjoy.
Guests arrive at the mainland parking area, are met by the Grant Island team, and are brought to the island by boat. After getting situated, guests receive orientation for island transportation and planning.
Arrival is part of the experience
The transition from mainland to island helps the trip feel different immediately.
Clear trip direction
Use the cottage inquiry path for stay questions, or the vehicle rental path for boats, ATVs, Jet Skis, and gear.
Two clear paths
Start a cottage inquiry or go directly to vehicle and boat rentals.
Brantingham Lake
Our location
A boat-in private island vacation in the Adirondacks.
Grant Island sits on Brantingham Lake in the Adirondacks. It is a quiet public lake with limited public access, giving guests a private-island basecamp with a calm residential-lake feel rather than a public beach or resort-style experience.
How it works
How your Grant Island trip works.
Choose your path, get the details you need, and arrive ready for a boat-in private island getaway in the Adirondacks.
Choose your path
Start with cottage stay details or adventure rental options.
Get details or book
Use the inquiry page or online rental booking path.
Arrive and enjoy
The Grant Island team helps with island arrival, orientation, and the next step.
Quick questions
Common things people ask before booking.
Is this a real private island rental?
Is Brantingham Lake private?
How do we get to Grant Island?
Do we need our own boat?
Can we rent boats, ATVs, Jet Skis, or gear?
Is Grant Island dog-friendly?
Is this more like a cabin, cottage, or vacation rental?
What is the best next step?
Ready for the island?
Plan the stay or rent the gear.
Choose the cottage inquiry path for a private island vacation, or explore vehicle and boat rentals for your Adirondack lake adventure.