4400 Island Ave
Austin, TX, 78731
$6,500,000
5 Beds
5 Baths
8,526 SqFt
1.6 Acres
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MLS #9276221 image #0
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.
Listing Provided Courtesy of Moreland Properties

Property Details

Price:
$6,500,000
MLS #:
9276221
Status:
Active
Beds:
5
Baths:
5
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
Island At Mount Bonnell Shores
Listed Date:
Jul 1, 2026
Finished Sq Ft:
8,526
Lot Size:
69,740 sqft / 1.60 acres (approx)
Year Built:
1996
WaterfrontLakefrontCanalfrontIsland At Mount Bonnell ShoresAustin IsdHighland ParkLamar (austin Isd)MccallumLake Austin

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Schools

School District:
Austin ISD
Elementary School:
Highland Park
Middle School:
Lamar (Austin ISD)
High School:
McCallum

Interior

Appliances
Built-In Oven(s), Dishwasher, Disposal, Gas Cooktop, Double Oven, Refrigerator, Stainless Steel Appliance(s)
Bathrooms
4 Full Bathrooms, 2 Half Bathrooms
Cooling
Central Air
Fireplaces Total
2
Flooring
Stone
Heating
Central, Natural Gas
Interior Features
Bookcases, Breakfast Bar, Built-in Features, High Ceilings, Stone Counters, Crown Molding, Double Vanity, Entrance Foyer, French Doors, Interior Steps, Kitchen Island, Multiple Dining Areas, Multiple Living Areas, Pantry, Primary Bedroom on Main, Soaking Tub, Study/Home Office, Walk-In Closet(s), Wet Bar
Levels
Two
Main Level Bedrooms
1

Exterior

Accessibility Features
None
Attached Garage YN
1
Community Features
Gated
Covered Spaces
3
Direction Faces
East
Exterior Features
Balcony, Boat Lift, Boat Slip, Boat Dock – Private, Private Yard
Fencing
None
Garage Spaces
3
Lot Features
Trees-Large (Over 40 Ft), Waterfall
Other Structures
None
Parking Features
Attached, Garage
Patio And Porch Features
Covered, Patio
Roof
Tile
Spa Features
None
View
Hill Country, Lake, River
Waterfront Features
Canal Front, Lake Front
Window Features
Window Treatments

Financial

HOA Fee
$3,000
HOA Fee Frequency
Annually
HOA Includes
Common Area Maintenance
HOA Name
Island at Mt. Bonnell
Taxes
$114,304

Map

Community

Subdivisions in Austin

Market Summary

Current real estate data for Single Family in Austin as of Aug 04, 2026
3,914
Single Family Listed
89
Avg DOM
373
Avg $ / SqFt
$976,902
Avg List Price

Property Summary

    Located in the Island At Mount Bonnell Shores subdivision, 4400 Island Ave Austin TX is a Single Family for sale in Austin, TX, 78731. It is listed for $6,500,000 and features 5 beds, 5 baths, and has approximately 8,526 square feet of living space, and was originally constructed in 1996. The current price per square foot is $762. The average price per square foot for Single Family listings in Austin is $373. The average listing price for Single Family in Austin is $976,902. To schedule a showing of MLS#9276221 at 4400 Island Ave in Austin, TX, contact your Stripe Realty agent at 512-439-2122.

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