4400 Island Ave - Photo 1
View all 23 photos
1 / 23
Just Listed

$6,500,000

4400 Island Ave, Austin, TX 78731

Island At Mount Bonnell Shores

Bedrooms5
Bathrooms6
Sq Ft8,626
Acres1.60
Year Built1996

About This Property

Situated within The Island, one of Austin’s most coveted gated communities on Lake Austin, this exceptional waterfront estate offers a rare combination of privacy, acreage, and direct lake access. Set on 1.6 acres along a serene canal, the property includes a spacious main residence and a separate one-bedroom guest house, creating an ideal setting for both everyday living and hosting family and friends. Designed for effortless entertaining, the main home features an open floor plan that connects expansive living spaces with the outdoors. Large windows frame peaceful water views, while the covered patio with a fireplace provides a year-round gathering space overlooking the property’s lush surroundings. Five bedrooms, four full bathrooms, and two half bathrooms offer flexibility and comfort across the thoughtfully designed residence. Outdoor amenities elevate the Lake Austin lifestyle, with a private dock featuring two boat slips for easy access to boating, paddleboarding, and waterfront recreation. Combining the security and prestige of The Island with generous acreage, guest accommodations, and coveted waterfront access, this property presents a rare opportunity to experience one of Austin’s most desirable lakefront settings. Tax and assessed values are estimates for illustration purposes only. All figures should be independently verified.

Property Details

Property TypeSingle Family
MLS #9276221
Days on Market1
Lot Size1.60 acres
HOA Fee$3,000 / Annually
Listed7/1/2026
Last Updated7/1/2026

Location

County
Travis
School District
Austin ISD
MLS Area
1B

Size

Lot Description
Trees-Large (Over 40 Ft), Waterfall
$/Acre
$4,059,963

Improvements

Garage Spaces
3
Fence
None
Exterior Features
Balcony, Boat Lift, Boat Slip, Boat Dock - Private, Private Yard
Heating
Central, Natural Gas
Cooling
Central Air
Appliances
Built-In Oven(s), Dishwasher, Disposal, Gas Cooktop, Double Oven, Refrigerator, Stainless Steel Appliance(s)
Flooring
Stone
Fireplaces
Living Room, Outside
Fireplace Count
2
Windows
Window Treatments
Construction Materials
Masonry – All Sides
Foundation
Slab
Roof
Tile
Direction Faces
East
Pool Features
None
Patio / Porch
Covered, Patio
View
Hill Country, Lake, River
Waterfront
Yes
Community Features
Gated
Covered Spaces
3
Parking Features
Attached, Garage

Location

You Might Also Like

Listing provided by Eric Moreland · Moreland Properties · (512) 480-0844

The information being provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. All information provided is deemed reliable but is not guaranteed and should be independently verified.

$6,500,000