Austin, TX 78731 4400 Island Ave

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Presented By: Moreland Properties;
  • MLS# 9276221
  • 07/01/2026
  • Request Tour
  • Request Info
  • Beds • 5
  • Full/Half Baths • 4 / 2
  • SQFT • 8,626
  • Garage • 3

Home Details

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.
Presented By: Moreland Properties;

Interior Features for 4400 Island Ave

Bedrooms

Main Level Bedrooms1
Total Bedrooms5

Bathrooms

Half Baths2
Total Baths6

Other Interior Features

LivingAreaSourcePublic Records
Fireplace FeaturesLiving Room, Outside
FlooringStone
Interior AmenitiesBookcases, 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, Prima
Total Fireplaces2
Window FeaturesWindow Treatments

General for 4400 Island Ave

AccessibilityNone
AppliancesBuilt-In Oven(s), Dishwasher, Disposal, Gas Cooktop, Double Oven, Refrigerator, Stainless Steel Appliance(s)
Assoc Fee Paid PerAnnually
Association Fee IncludesCommon Area Maintenance
Association NameIsland at Mt. Bonnell
Body of WaterLake Austin
CityAustin
Community FeaturesGated
Construction MaterialsMasonry – All Sides
CoolingCentral Air
CountyTravis
DirectionsBalcones to Mt Bonnell to Island at Mount Bonnell neighborhood gate. Home is on Island Avenue near the exit gate.
DisclosuresNone
Elementary SchoolHighland Park
Energy EfficientNone
Facing DirectionEast
Full Baths4
Garage Spaces3
Green SustainabilityNone
HOAYes
HOA Fee$3000
HeatingCentral, Natural Gas
High SchoolMcCallum
LevelsTwo
Living Area8626
Lot Size Square Feet69739.56
MLS Area1B
Middle/Junior High SchoolLamar (Austin ISD)
New ConstructionNo
Other StructuresNone
Patio/Porch FeaturesCovered, Patio
Pool FeaturesNone
Property ConditionResale
Property SubtypeSingle Family Residence
Property TypeResidential
RoofTile
Security FeaturesSmoke Detector(s)
SewerPublic Sewer
Spa FeaturesNone
Standard StatusActive
StatusActive
Subdivision NameIsland At Mount Bonnell Shores
Tax Annual Amount114303.92
Tax Assessed Value5585378
Tax Year2026
UtilitiesElectricity Available, Natural Gas Available, Underground Utilities
ViewHill Country, Lake, River
Waterfront FeaturesCanal Front, Lake Front
Year Built1996
Year Built SourcePublic Records

Exterior for 4400 Island Ave

Covered Spaces3
Exterior AmenitiesBalcony, Boat Lift, Boat Slip, Boat Dock - Private, Private Yard
FencingNone
Foundation DetailsSlab
Horse Amenities None
Horse Y/NNo
Lot FeaturesTrees-Large (Over 40 Ft), Waterfall
Lot Size Acres1.601
Parking FeaturesAttached, Garage
Total Parking6
Water SourcePublic
Waterfront Y/NYes

Additional Details

Price History

Schools

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

Dathon Aragon

Broker
Price $6,500,000
MLS#9276221
List Date 07/01/2026
Property Type Single Family
Phone 866.277.6005
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