4400 Island Ave, Austin TX 78731
MLS #244367668 · Moreland Properties · Eric Moreland
About this home
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.
Property details
- Property type
- Residential · SingleFamilyResidence
- Status
- Active
- Year built
- 1996
- Full baths
- 4
- Half baths
- 2
- Lot size
- 1.601
- Subdivision
- Island At Mount Bonnell Shores
- MLS area
- 1B
- MLS #
- 244367668
Features
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
Exterior features
- Balcony
- Boat Lift
- Boat Slip
- Boat Dock - Private
- Private Yard
Additional details
- Parking
- Attached, Garage
- Garage spaces
- 3
- Roof
- Tile
- Foundation
- Slab
- HOA
- $3,000 / annually
- Annual tax
- $114,303
Location
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Schools
Assigned schools per the MLS.
- School district
- Austin ISD
- Elementary
- Highland Park
- Middle
- Lamar (Austin ISD)
- High
- McCallum
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Getting around
- Downtown Austin
- 4.8 mi
- Austin-Bergstrom Airport
- 11.3 mi
Straight-line distance, not drive time.
Market insights
Compared with 214 active homes in ZIP 78731 · HomeLocating listings
At $6,250,000, this home is priced 468% above the $1,099,999.5 median across 214 active homes in ZIP 78731.
Estimated monthly payment
Home price
$6,250,000
Down payment
20% ($1,250,000)
Loan details
30-yr fixed, 6.50%
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Estimate only, not a lending offer or MLS data. Taxes, insurance, and HOA figures are estimated (see ⓘ above for detail); contact a lender to confirm your exact rate and payment.
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Listing courtesy of Moreland Properties · Eric Moreland
Listing data last updated Oct 2, 2026, 11:46 PM
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