$6,500,000
 $34,893 est/mo Sourced by Back At You

4400 Island Ave,Austin, TX 78731

Austin, TX 78731

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Description

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.

Details

MLS #9276221
Listing TypeFor Sale
StyleHouse
HOA Dues$3,000
Sub-TypeResale
StatusActive
Year1996
Days On Site60
Listing Provided ByMoreland Properties | Eric Moreland

Features

Bed(s)5
Bath(s) 6 Total
SQ Feet7,219
Garage3
Story(s)2
Acreage1.60
Water FrontYes
Property ViewHill Country, Lake, River

Interior

Interior FeaturesBookcases, Breakfast Bar, Built-in Features, Ceiling-High, Stone Counters, Crown Molding, Double Vanity, Entrance Foyer, 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
CoolingCentral Air
HeatingCentral, Natural Gas
AppliancesBuilt-In Oven(s), Dishwasher, Disposal, Gas Cooktop, Double Oven, Refrigerator, Stainless Steel Appliance(s)
Fireplace FeaturesLiving Room, Outside
Fireplaces Total2
Window FeaturesWindow Treatments
FlooringStone

Exterior

Exterior FeaturesBalcony, Boat Lift, Boat Slip, Boat Dock - Private, Private Yard
RoofTile
Foundation DetailsSlab
Lot FeaturesTrees-Large (Over 40 Ft), Waterfall
Patio And Porch FeaturesCovered, Patio
FencingNone
Construction MaterialsMasonry – All Sides
Security FeaturesSmoke Detector(s)

Parking

Parking FeaturesAttached, Garage
Garage Spaces3

Utilities

UtilitiesElectricity Available, Natural Gas Available, Underground Utilities
SewerPublic Sewer

Other

List AorAustin Board Of Realtors

Taxes

Property114303

Area Information

StateTX
CountyTravis
CityAustin
Zip Code78731
Area1B
Community NameIsland At Mount Bonnell Shores
School DistrictAustin ISD
Elementary SchoolHighland Park
High SchoolMcCallum
Listing VS Median (in Island At Mount Bonnell Shores)
Price:
$6,500,000
low | high
Med:
$6,700,000
46.923076923077% of Average
sqft:
7,219
low | high
Med:
7,753
42.609779747888% of Average
$ / sqft:
$900
low | high
Med:
$867
53.757867765833% of Average
On site:
60
low | high
Med:
287
20.905923344948% of Average
Sourced by Back At You

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 Listings courtesy of Austin Board of REALTORS® MLS as distributed by MLS GRID.

Based on information submitted to the MLS GRID as of August 30, 2026 at 1:08:57 PM PDT All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

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Learn More About This Property

StateTX
CountyTravis
CityAustin
Zip Code78731
Area1B
Community NameIsland At Mount Bonnell Shores
School DistrictAustin ISD
Elementary SchoolHighland Park
High SchoolMcCallum
Listing VS Median (in Island At Mount Bonnell Shores)
Price:
$6,500,000
low | high
Med:
$6,700,000
46.923076923077% of Average
sqft:
7,219
low | high
Med:
7,753
42.609779747888% of Average
$ / sqft:
$900
low | high
Med:
$867
53.757867765833% of Average
On site:
60
low | high
Med:
287
20.905923344948% of Average
Sourced by Back At You
Listing Updated: August 14, 2026 at 9:52:18 AM PDT
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