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Keenan Group#1 Austin Board of Realtors Team 2024

$8,490,000

5.93 acresLot

4323 Mt Bonnell Rd, Austin, TX 78731

Austin·MLS# 1967428·349 days on market

— bed, — bath on 5.93 acres in Austin. Austin, TX 78731. $8,490,000. Austin ISD.

About This Home

Perched atop one of the most iconic elevations in Central Austin, The Ridge at Mount Bonnell presents a rare opportunity to craft a world-class estate on nearly six acres of private, blufftop land. With panoramic views over Lake Austin and a front-row seat to the Pennybacker Bridge, this one-of-a-kind homesite offers a setting that’s as awe-inspiring as it is exclusive.

Located within minutes of Austin’s best shopping, dining, and entertainment—yet wrapped in natural serenity—4323 Mount Bonnell Road invites you to build a home that is both a personal retreat and a bold architectural statement. Included in the offering are conceptual plans by globally acclaimed architect Tom Kundig, whose work is celebrated for its seamless integration with the land. His vision here imagines a sculptural modern residence that disappears into the cliffside while maximizing light, privacy, and views.

This is more than a homesite—it’s a legacy property in one of Austin’s most historically significant and sought-after locations. Whether you realize the Kundig vision or bring your own design team, the result will be something truly singular: a custom home at the apex of Austin, surrounded by nature, overlooking the water, and unlike anything else on the market.

There are many beautiful spots in Austin. There is only one Mount Bonnell.

Property Type
Land
Lot Size
5.93 acres

Listing information last updated March 16, 2026.

Listed by Kuper Sotheby's Int'l Realty

MLS# 1967428 • Active

IDX inquiries: Keenan Group at Compass · (512) 415-7653

Highlights

Generous 5.93-acre lot
Private
Many Trees
There are many beautiful spots in Austin
There is only one Mount Bonnell.

Facts & Features

Exterior & Lot

Lot Features

  • Private
  • Many Trees
  • Views
Lot Size
5.93 Acres
Financial
Original List Price
$8,490,000
Utilities
Water Source
Well
Sewer
Public Sewer

Transaction History

1 record on file

Every recorded listing, sale, and lease at 4323 Mt Bonnell Rd, whoever represented it.

  1. ActiveListed 2025
    Current price: $8,490,000Original list: $8,490,000MLS 1967428

Prices shown are list prices. Closed sale prices are available to registered clients in accordance with ACTRIS rules.

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Price & Listing History

Listing timeline with current price, original ask, and market time.

View Timeline
Current list
$8,490,000
Original list
$8,490,000
Price movement
No verified reduction
Listed / DOM
Nov 20, 2025 · 349 days

Tax Record

Public record data from county appraisal records. Market value can differ from assessed value.

Assessed Value
$525
Assessment Year
2025
Parcel ID
000000123406
$1.5M
$525
$1,500,000
2021
$525
-100.0% from prev
2025
YearTaxesTotal AssessmentLandAdditions
2025-100.0%
—$525——
2021
—$1,500,000$1,500,000—
5-Year Change-100.0%

Virtual Tour

Virtual tour of 4323 Mt Bonnell Rd
Map showing 4323 Mt Bonnell Rd
4323 Mt Bonnell Rd
Directions

Zoned Schools

Austin ISD →

1 High School1 Middle School1 Elementary School

Zoned assignments come from the property school fields available to us. District context schools are shown only when an assigned tier is missing. Contact the school district directly to verify current boundaries and enrollment eligibility.

Principal & interest
$46,287

Excluded from this estimate: property taxes, home insurance, and HOA dues. Each requires verified amount, cadence or unit, source, and as-of details.

Illustrative down payment

20% ($1.7M)

Adjustable assumption - not a lending recommendation.

Home price

$8,490,000

Loan: $6.8M

Loan details

Mortgage rate%
Payoff: ~2056
Rate source: Freddie Mac 30-year fixed average (PMMS via FRED), as of 2026-10-29
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Luxury property intelligence

Keenan Market Position

A sourced read on Austin pricing, timing, and property scale. No automated valuation claim.

List price

$8,490,000

Price per sqft

Not available

Vs. Neighborhood guide reference price

Not available

Days on market

349 days

Original to current

No verified reduction

$8.5M original

Active inventory context

Ask for current inventory

Source: MLS Grid / Unlock MLS and Keenan Group review as of Oct 15, 2026.

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Frequently Asked Questions

How much is 4323 Mt Bonnell Rd?

4323 Mt Bonnell Rd is listed at $8,490,000 with 0 bedrooms, 5.93-acre lot. This places it above the ZIP 78731 single-family closed-sale median price of $1,228,625 (ZIP 78731 geography · single-family closed sales · median sale price · trailing 12 months as of Nov 3, 2026).

What school district is 4323 Mt Bonnell Rd in?

4323 Mt Bonnell Rd is zoned for Austin ISD with assigned schools: Highland Park (elementary), Lamar (Austin ISD) (middle), McCallum (high). School assignments should be verified directly with the district.

What are the property taxes for 4323 Mt Bonnell Rd?

The most recent annual property tax for 4323 Mt Bonnell Rd is $10. Texas has no state income tax, so property taxes are a primary revenue source. Rates vary by jurisdiction and exemptions. Verify current amounts with the county appraisal district.

How should a buyer estimate the monthly payment for 4323 Mt Bonnell Rd?

This page does not assume a mortgage rate or publish a monthly payment for 4323 Mt Bonnell Rd. A property-specific estimate requires a current lender rate, chosen down payment, taxes, insurance, and any verified association dues.

How does 4323 Mt Bonnell Rd compare with other homes in Austin?

As of Oct 15, 2026, 4323 Mt Bonnell Rd is offered at $8,490,000. The current MLS snapshot shows 54 active listings in 78731. Keenan Group has completed 92 verified transactions in 78731 within its 1,000+ completed transactions and $1B+ career volume across Austin.

Answers use visible listing facts, school context, and neighborhood data available on this page. Verify time-sensitive details before making decisions.

Why Choose the #1 Austin Board Team for Austin

#1 ABoR Team 20241,000+ Career SalesCompass Luxury Collection Specialist

#1 Austin Board of Realtors Team. 1,000+ homes sold and $1B+ in career sales over 25+ years in Austin.

25+ years advising buyers and sellers in this community

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Listing courtesy of Unlock MLS as distributed by MLS GRID. Information deemed reliable but not guaranteed. Neither the listing broker nor Compass RE Texas, LLC shall be responsible for any typographical errors, misinformation, or misprints.

IDX information is provided exclusively for consumers' 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 is deemed reliable but is not guaranteed by MLS GRID. Use of MLS GRID data may be subject to an end user license agreement prescribed by the applicable MLS, as amended from time to time.

Based on information submitted to MLS GRID as of 10/15/2026, 1:07:08 PM. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

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Keenan Luxury Market Index figures and Keenan Group sales counts are published under CC BY 4.0 and may be reused with attribution to Keenan Group at Compass. Methodology and citation format: thekeenangroup.com/the-source/keenan-luxury-market-index-methodology.

Last updated: 10/15/2026, 1:07:08 PM

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