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5Bedrooms
6Bathrooms
7,219Reported sq ft
1996Year built
Single Family ResidenceProperty type
Asking price per sq ft
$866/sq ft$6,250,000 ÷ 7,219 reported sq ft
Reported lot size
1.601 acres
Reported association fee
$3,000 · Annually
Reported annual tax
$114,304 · tax year 2026
Since the source last modified this listing
3 daysModified Sep 28, 2026
AROUND THIS HOME
Reading public records for this address…
LIVING HERE · PUBLIC RECORDS AROUND THE HOME
Reading public records for this address…
THE HOME, IN THE LISTING AGENT’S WORDS
A closer look.
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.
THE DETAILS THAT SHAPE YOUR DAY
Reported property facts
Property type
Residential
Property subtype
Single Family Residence
Bedrooms
5
Bathrooms
6
Full bathrooms
4
Half bathrooms
2
Living area
7,219 sq ft
Lot acres
1.601
Year built
1996
Parking spaces
6
Garage spaces
3
Schools reported in the listing
High schoolMcCallum
Middle schoolLamar (Austin ISD)
DistrictAustin ISD
ElementaryHighland Park
Verify assignment with the relevant district for the exact address, program and school year. These source-reported names are not ratings or an enrollment guarantee.
Bookcases · 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
security+
Smoke Detector(s)
community+
Gated
utilities+
Electricity Available · Natural Gas Available · Underground Utilities
Check mapped flood zones and regional geology, then turn the findings into better questions before you buy. Each source describes a different part of the picture.
4400 Island Ave, Austin, TX, 78731
Uses the listing’s reported coordinates, which may be approximate.
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Based on information submitted to the MLS GRID as of Oct 2, 2026, 4:20 AM Central. 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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YOUR NEXT MOVE
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