Address
4400 Island Ave, Austin, TX
Price
$ 6,500,000
Property Attributes
- MLS#9276221
- TypeSingle Family
- Listing Status Active
- CountyTRAVIS
- CityAustin
- Area1B
- NeighborhoodIsland At Mount Bonnell Shores
- Zip78731
- StyleSingle Family Residence
- Year Built1996
- Taxes$ 114303
- Price$ 6,500,000
- Bedrooms5
- Full Bathrooms4
- Half Bathrooms2
- Sqr Footage7219
- Lot Size1.601 Acres
Data Source:
Austin Board of REALTORS® (ABOR) as distributed by MLS GRID
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.
| Elementary School | Middle School | High School |
|---|---|---|
| Highland Park Elementary School | Lamar (Austin ISD) Middle School | McCallum High School |
| Price History | |
|---|---|
| 7/1/2026 | Listed $6,500,000 |
General Features
| Living Area | 7219 |
|---|---|
| Sewer | Public Sewer |
| Heating | Central,Natural Gas |
| Cooling | Central Air |
| Utilities | Electricity Available,Natural Gas Available,Underground Utilities |
| Roof | Tile |
| Appliances | Built-In Oven(s),Dishwasher,Disposal,Gas Cooktop,Double Oven,Refrigerator,Stainless Steel Appliance(s) |
| HOA Fee | 3000 |
| Garage Spaces | 3 |
| Association Fee Includes | Common Area Maintenance |
| Patio/Porch Features | Covered,Patio |
| Pool Features | None |
| Security Features | Smoke Detector(s) |
| Construction Materials | Masonry – All Sides |
| Year Built | 1996 |
| View | Hill Country,Lake,River |
| Levels | Two |
| Property Subtype | Single Family Residence |
| Tax Year | 2026 |
| Waterfront Features | Canal Front,Lake Front |
| Community Features | Gated |
| Accessibility | None |
| Assoc Fee Paid Per | Annually |
| County | Travis |
| New Construction | No |
| Property Type | Residential |
| HOA | Yes |
| Energy Efficient | None |
| Subdivision Name | Island At Mount Bonnell Shores |
| Facing Direction | East |
| Green Sustainability | None |
| Other Structures | None |
| Full Baths | 4 |
| Status | Active |
| Directions | Balcones to Mt Bonnell to Island at Mount Bonnell neighborhood gate. Home is on Island Avenue near the exit gate. |
| High School | McCallum |
| City | Austin |
| Body of Water | Lake Austin |
| Disclosures | None |
| Association Name | Island at Mt. Bonnell |
| MLS Area | 1B |
| Lot Size Square Feet | 69739.56 |
| Spa Features | None |
| Elementary School | Highland Park |
| Tax Annual Amount | 114303.92 |
| Middle/Junior High School | Lamar (Austin ISD) |
| Property Condition | Resale |
| Standard Status | Active |
| Year Built Source | Public Records |
| Tax Assessed Value | 5585378 |
Interior Features
| Interior Amenities | 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,Prima |
|---|---|
| Flooring | Stone |
| Total Fireplaces | 2 |
| Fireplace Features | Living Room,Outside |
| Window Features | Window Treatments |
| Half Baths | 2 |
| Total Bedrooms | 5 |
| Main Level Bedrooms | 1 |
| LivingAreaSource | Public Records |
| Total Baths | 6 |
Exterior Features
| Exterior Amenities | Balcony,Boat Lift,Boat Slip,Boat Dock - Private,Private Yard |
|---|---|
| Fencing | None |
| Parking Features | Attached,Garage |
| Lot Features | Trees-Large (Over 40 Ft),Waterfall |
| Water Source | Public |
| Total Parking | 6 |
| Foundation Details | Slab |
| Lot Size Acres | 1.601 |
| Waterfront Y/N | Yes |
| Covered Spaces | 3 |
| Horse Y/N | No |
| Horse Amenities | None |
Amenities
- Foreclosure
- Views
- Short Sale
- New Construction
- Adult 55+
- Lease To Own
- No HOA Fees
- Furnished
- Primary On Main
- Air Conditioning
- Seller Finance
- Green
- Fixer Upper
- Horse
- Golf
- Fireplace
- Deck
- Garage
- Basement
- Pool
Property vs Single Family Average in 78731
Price
Taxes
Year Built
Visits
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All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data relating
All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data relating
