Newly completed, The Onyx is among the most significant residential offerings ever brought to market in Westlake Hills. Defined by rare elevation, sweeping downtown Austin views, and exceptional execution, this architectural estate delivers scale, presence, and privacy at a level few homes achieve. A secure, gated, and privately walled arrival sets the tone for the residence. Spanning approximately 11,000 square feet on nearly an acre, the home was built by Paradisa Homes with an uncompromising focus on proportion, durability, and enduring quality. Walls of glass frame the living environment throughout, including a custom Fleetwood Edge sliding system—the largest of its kind—opening to uninterrupted city and Hill Country views. Interior volumes are striking, with ceilings reaching up to 18 feet and light moving intentionally throughout the day. The kitchen is anchored by a 12-foot Milano marble island with Gaggenau appliances, complemented by a fully equipped catering kitchen with Thermador appliances and a glass-enclosed wine vault with approximately 600-bottle capacity. An entire level is dedicated to the owner’s suite, featuring a private lounge, office, dual walk-in closets, safe room, and a spa-like bath with soaking tub, oversized rain shower, and floor-to-ceiling glass framing downtown views. Additional amenities include a private theater, fitness studio with steam shower, library, full bar opening to the pool, elevator, and a fourth-floor Sky Parlor designed for indoor-outdoor entertaining. Outdoor living includes a resort-style pool and spa, cabana with swim-up bar, outdoor kitchen, pool bath, and expansive lawns. A detached guest house offers a kitchen, living space, and en-suite bedroom. Garage parking accommodates 6–12 vehicles with lift capability. Located in Eanes ISD and minutes from downtown Austin.
Single-familyProperty Type
2025Year Built
0.89 acresLot Size
$1,457Price/Sq.Ft.
6 car garageParking
Listed by Bridget Ramey• Kuper Sotheby's Int'l Realty
Perched near the top of Westlake Hills with big downtown views this . 89 acre lot is the perfect pad to build your forever home. The property is in the ETJ so there are far fewer restrictions with trees and what you can build. The lot feels extremely secluded with tons of trees ensuring great privacy. This is a fantastic opportunity to create your dream home within minutes of downtown Austin.
Unlock MLS #2335674
Dec 4, 2020
Contingent
—
Oct 30, 2020
Listed
$1,600,000
$147/sq ft
Unlock MLS #6787165
May 8, 2007
Delisted
—
Jul 10, 2006
Listed
*
Year
Property tax
Land + Additions
Assessment*
2026
$174,439 (+19.0%)
$1,204,004 + $8,828,976
$10,032,980
2025
$146,589 (+59.6%)
$1,204,004 + $8,828,976
$10,032,980
2024
$91,842 (+48.7%)
$1,150,000 + $5,096,439
$6,246,439
2023
$61,775 (+141.0%)
$1,150,000 + $3,169,168
$4,319,168
2022
$25,631 (+50.5%)
$1,150,000 + $491,337
$1,641,337
2021
$17,028 (+15.4%)
$646,875 + $361,896
$1,008,771
2020
$14,756 (+9.8%)
2019
$13,434 (+5.4%)
2018
$12,748 (+10.0%)
2017
$11,588 (+10.0%)
2016
$10,535 (+17.6%)
2014
$8,958 (+7.4%)
2013
$8,344 (−2.8%)
2012
$8,587 (+44.0%)
2011
$5,962 (+12.2%)
2010
$5,315
2009
$5,315
Public record
Public record
Permits
Beds
4
Baths
6
Stories
3
Lot width
—
Lot depth
—
Lot size
0.89 Acres
Year renovated
—
Finished Sq. Ft.
9,640
Unfinished Sq. Ft.
—
Total Sq. Ft.
9,640
Year built
2022
Style
Single Family Residential
County
Travis County
APN
121137
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jun 11, 2026.
Dec 10, 2024 • Final
Residential
Construct a new single-family home with an on-site sewage facility.
New construction
Feb 2, 2024 • Final
Electrical
Install a new electrical service for a new residential building.
Electrical
New construction
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
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