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405 Barrett LN
Austin, TX, 78733
$4,500,000
8 Beds
9 Baths
7,536 SqFt
1.58 Acres
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Open House Oct 26, 2025
02:00 – 04:00
This rare offering in Rob Roy on the Lake spans over 7,500 square feet across two thoughtfully designed structures, creating a true multi-generational estate with limitless flexibility. Built to adapt to evolving lifestyles, the property can offer three independent living quarters while maintaining a unified sense of luxury.

The 5,800-square-foot main residence features elegant formal living and dining rooms, a chef’s kitchen with breakfast room overlooking a serene courtyard, and a grand family room that flows effortlessly to the backyard retreat. A negative-edge pool, multiple covered terraces, and panoramic Hill Country views set the stage for unforgettable entertaining and fun. The owner’s suite and dedicated office are located on the main level, while the upstairs level can function as its own private four bedroom retreat, with three full bathrooms, a large kitchen, dining and living space as well as a beautiful covered terrace to take in the hill country views.

The 2025-built single-story guest house offers 3 bedrooms, 2.5 baths, a 2-car garage, and sleek contemporary interiors all in 1700 sq ft. With expansion potential beneath the structure, this space is equally suited for extended family, guests, or long-term rental income.

Together, these homes create an estate that is as versatile as it is beautiful. Whether designed for large families, multi-generational living, or investment potential, the property offers unmatched possibilities.

Situated in the prestigious Eanes ISD and feeding to Forest Trail Elementary, West Ridge Middle, and Westlake High School, this estate also boasts an incredibly low 1.6% tax rate and just a $1,000 annual HOA fee—making it one of Westlake’s best-kept secrets.

Property Details

Price:
$4,500,000
MLS #:
3162024
Status:
Active
Beds:
8
Baths:
9
Address:
405 Barrett LN
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
Rob Roy On Lake Sec 02
City:
Austin
Listed Date:
Oct 23, 2025
State:
TX
Finished Sq Ft:
7,536
ZIP:
78733
Lot Size:
68,786 sqft / 1.58 acres (approx)
Year Built:
2003
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Schools

School District:
Eanes ISD
Elementary School:
Forest Trail
Middle School:
West Ridge
High School:
Westlake

Interior

Appliances
Built- In Electric Range, Built- In Gas Range, Cooktop, Dishwasher, Disposal, Dryer, E N E R G Y S T A R Qualified Appliances, E N E R G Y S T A R Qualified Dishwasher, E N E R G Y S T A R Qualified Dryer, E N E R G Y S T A R Qualified Refrigerator, Exhaust Fan, Gas Cooktop, Microwave, Double Oven, Refrigerator, Washer/ Dryer
Bathrooms
8 Full Bathrooms, 2 Half Bathrooms
Cooling
Ceiling Fan(s), Central Air
Fireplaces Total
1
Flooring
Carpet, Marble, Wood
Heating
Central, Fireplace(s)

Exterior

Community Features
See Remarks
Exterior Features
Balcony, Barbecue, Dog Run, Exterior Steps, Gas Grill, Gutters Full, Lighting, Outdoor Grill, Private Entrance, Private Yard, See Remarks
Other Structures
Guest House
Parking Features
Additional Parking, Door- Multi, Driveway, Garage
Roof
Tile

Financial

HOA Fee
$750
HOA Frequency
Annually
HOA Includes
Common Area Maintenance
HOA Name
Rob Roy on the Lake Section Two Owners

Map

Community

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405 Barrett LN
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