4400 Island Ave, Austin, TX, 78731 - MLS# 9276221

$6,500,000

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Beds 5
Baths 6
Sqft 7,219
Acres 1.60
Property Type Home
Heating Central, Natural Gas
Parking Attached, Garage
Year Built 1996
Stories 2
Cooling Central Air
Days on Market 73
Garages 3.00

About 4400 Island Ave

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.

Location

Legal Description LOT 1-A BLK B ISLAND AT MT BONNELL SHORES THE AMENDED PLAT OF LOTS 1&2
Address 4400 Island Ave
County Travis
City Austin
Zip Code 78731
Subdivision Island At Mount Bonnell Shores
School District Austin ISD
MLS Area 1B

Size and Restrictions

Acres 1.60
Lot Description Trees Large Size, Waterfall
Horses Allowed No
$/Acre $4,059,963

Improvements

Parking Attached, Garage
Garage Spaces 3.00
Fence None
Exterior Features Boat Lift, Balcony, Boat Slip, Dock, Private Yard

Features

View Hills, Lake, River
Water Access Canal Front, Lake Front, Boat Ramp/Lift Access
Waterfront Lake Austin

Utilities

Water Public
Utilities Electricity Available, Natural Gas Available, Underground Utilities

Amenities

Area Amenities Gated

Beds and Baths

Bedrooms 5
Main Level Beds 1
Bathrooms 4 full / 2 half
Primary on Main Yes

Other Rooms

Kitchen Appliances Built-In Oven, Double Oven, Dishwasher, Gas Cooktop, Disposal, Refrigerator, Stainless Steel Appliance(s)
Laundry Facilities Main Level, Laundry Room

Heating and Cooling

Heating Central, Natural Gas
Air Conditioning Central Air
Fireplaces Living Room, Outside

Interior Features

Flooring Stone
Features Wet Bar, Breakfast Bar, Bookcases, Built-in Features, Crown Molding, Separate/Formal Dining Room, Double Vanity, Entrance Foyer, French Door(s)/Atrium Door(s), High Ceilings, Interior Steps, Kitchen Island, Multiple Living Areas, Multiple Dining Areas, Main Level Primary, Pantry, Stone Counters, Soaking Tub, Study, Walk-In Closet(s)
Disability None

Building Information

Square Feet 7,219
Year Built 1996
# of Stories 2
Building Faces East
Construction Masonry
Foundation Slab
Roof Tile

Property Features

Exterior Features Boat Lift, Balcony, Boat Slip, Dock, Private Yard

Garage and Parking

Garage Yes - 3 Spaces
Parking Attached, Garage

Financial

$/Sq Ft $900
$/Acre $4,059,963
Special Conditions DevelopmentRestriction,DeedRestrictions,BuildingRestrictions
Documents Available Survey
Disclosures None

Property Taxes

Appraisal District Travis
Estimated Taxes $100,000
Tax ID 01290705100000
Tax Year 2026

Homeowner Association

Has HOA Yes
HOA Name Island at Mt. Bonnell
HOA Fee $3,000 - Annually

Listing Details

OfficeMoreland Properties
Contact Info(512) 480-0848

Listing Map

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