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4400 Island AveAustin, TX 78731

For Sale

$6,500,000

Smart Buyer Rebate $65,000

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.

Listed by Eric Moreland

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License #449345

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Moreland Properties

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(512) 480-0848

Last updated July 26, 2026

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Source: ACTRIS #9276221

Listing Facts

  • TypeSingle-family
  • NeighborhoodHighland Park West
  • Bedrooms5
  • Bathrooms6
  • Days on Prevu31
  • HOA/Maint. Fees$3,000/annual
  • Taxes$114,303.92/year
  • Size8,526 sqft
  • Price per sqft$762

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Air Conditioning
  • Parking
  • Swimming Pool

Location

Mortgage Calculator

Listing History

07/01/2026
Listed by Moreland Properties
$6,500,000

Property Details for 4400 Island Ave

Association

Amenities

  • Community Features: Gated

Fees

  • Association Fee: $3,000.00 Annually
  • Association Fee Includes: Common Area Maintenance

General

  • Association Name: Island At Mt. Bonnell

Exterior

Construction

  • Property Condition: Resale
  • Roof: Tile
  • Window Features: Window Treatments
  • Year Built: 1996
  • Construction Materials: Masonry – All Sides
  • Exterior Features: Balcony, Boat Lift, Boat Slip, Boat Dock - Private, Private Yard

Features

  • Direction Faces: East
  • Patio And Porch Features: Covered, Patio
  • View: Hill Country, Lake, River
  • Waterfront Features: Canal Front, Lake Front
  • Waterfront: Yes

Measurements

  • Lot Features: Trees-Large (Over 40 Ft), Waterfall
  • Lot Size Acres: 1.60
  • Lot Size Area: 1
  • Lot Size Square Feet: 69,739

Financial

Taxes

  • Parcel Number: 01290705100000
  • Tax Annual Amount: $114,303.92
  • Tax Assessed Value: $5,585,378.00
  • Tax Year: 2026

Interior

Features

  • Appliances: Built-In Oven(s), Dishwasher, Disposal, Gas Cooktop, Double Oven, Refrigerator, Stainless Steel Appliance(s)
  • Fireplace Features: Living Room, Outside
  • Fireplaces Total: 2
  • Flooring: Stone
  • 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

Measurements

  • Living Area: 8,526
  • Living Area Source: Public Records

Rooms

  • Bathrooms Full: 4
  • Bathrooms Half: 2
  • Bathrooms Total Integer: 6
  • Bedrooms Total: 5
  • Main Level Bedrooms: 1

Other

Location

  • Subdivision Name: Island At Mount Bonnell Shores
  • Tax Block: B
  • Tax Lot: 1-A
  • Water Body Name: Lake Austin

Parking

Parking

  • Attached Garage: Yes
  • Covered Spaces: 3
  • Garage Spaces: 3
  • Garage: Yes
  • Parking Features: Attached, Garage
  • Parking Total: 6

Schools

Elementary School

  • Elementary School: Highland Park
  • Elementary School District: Austin ISD

High School

  • High School: Mc Callum
  • High School District: Austin ISD

Middle or Junior School

  • Middle Or Junior School: Lamar (Austin ISD)
  • Middle Or Junior School District: Austin ISD

Utilities

Equipment

  • Cooling: Central Air
  • Heating: Central, Natural Gas
  • Sewer: Public Sewer
  • Utilities: Electricity Available, Natural Gas Available, Underground Utilities
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 5 bedrooms and 6 bathrooms in this single-family home at 4400 Island Ave.

What schools are nearby to 4400 Island Ave?

Nearby schools include the Highland Park Elementary School, Lamar (Austin ISD) Middle School, and Mc Callum High School.

Does this single-family home have parking?

Yes, there are 3 parking spaces available for 4400 Island Ave.

What are the annual taxes for 4400 Island Ave?

Annual taxes for this single-family home are estimated at $114,303.

How does 4400 Island Ave compare to other single-family homes in Highland Park West?

This single-family home is listed 47% above the average price for single-family homes in Highland Park West and has been on the market for 31 less days than the typical home in this area.

What building or home owners association is the single-family home part of?

This single-family home is part of the Island At Mt. Bonnell home owners association.

What is the square footage on this single-family home?

According to the MLS, this listing is 8,526 sqft.

4400 Island Ave is a 5-bedroom, 6-bath single-family home for sale in Austin TX 78731. On Prevu for 31 days at $6,500,000. This property features 8,526 square feet of living space, located in Highland Park West. The median listing price for single-family homes in this area is $1,397,000. Nearby schools include Highland Park Elementary School, Lamar (Austin ISD) Middle School, and Mc Callum High School. Additional amenities include private outdoor space, dishwasher, air conditioning, parking, and swimming pool. View other single-family home listings in Austin.

Based on information from ACTRIS and/or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by Prevu or the MLS. Information is provided exclusively for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.