4400 Island Ave Austin, TX 78731 New

UPDATED: 07/02/2026 09:03 AM ON MARKET: 1 days on market

$6,500,000

5 Beds5 Baths8,626 SqFt

Key Details

Property Type Single Family Home

Sub Type Single Family Residence

Listing Status Active

Purchase Type For Sale

Square Footage 8,626 sqft

Price per Sqft $753

Subdivision Island At Mount Bonnell Shores

MLS Listing ID 9276221

Bedrooms 5

Full Baths 4

Half Baths 2

HOA Fees $3,000/ann

HOA Y/N Yes

Year Built 1996

Annual Tax Amount $114,303

Tax Year 2026

Lot Size 1.601 Acres

Acres 1.601

Property Sub-Type Single Family Residence

Source actris

Property 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.

Based on information from Unlock MLS (alternatively, from ACTRIS) for the period through 07/02/2026. Neither the Board nor ACTRIS guarantees or is in any way responsible for its accuracy. All data is provided “AS IS” and with all faults. Data maintained by the Board or ACTRIS may not reflect all real estate activity in the market.
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Data last updated: 07/02/2026 14:58