#1 Austin Board of Realtors Team 2024#1 Austin Board of Realtors Team 2024This property has sold on August 30, 2011. Looking for something similar? Contact us or browse available homes.
3901 Island Knoll Dr
Austin, TX, 78746
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One of a kind Lake Austin Waterfront! 1.423 Acres/survey. Private, gated, flat building site with view of the water. Nestled in quiet cove on Lake Austin. Boat dock with lift, one slip. Open, "football-field sized" green lake front yard. Massive oak trees provide gorgeous park like setting. Plans by Ryan Street ready for permitting. Topographic/tree survey available! No city taxes! City water and sewer. Bridge Point Elementry. FEMA - Unknown Restrictions: Yes
Property Type
Land
Lot Size
1.42 acres
Verified property facts
3901 Island Knoll Dr is listed at $2,672,000 with 1.42-acre lot. This places it above the ZIP 78746 single-family closed-sale median price of $2,100,000 (ZIP 78746 geography · single-family closed sales · median sale price · trailing 12 months as of Sep 4, 2026).
This page does not assume a mortgage rate or publish a monthly payment for 3901 Island Knoll Dr. A property-specific estimate requires a current lender rate, chosen down payment, taxes, insurance, and any verified association dues.
As of Mar 26, 2026, 3901 Island Knoll Dr is offered at $2,672,000. The current MLS snapshot shows 83 active listings in 78746. Keenan Group has completed 19 verified transactions in 78746 within its 1,000+ completed transactions and $1B+ career volume across Austin. See Keenan Group's Westlake Hills guide for current neighborhood analysis.
Answers use visible listing facts, school context, and neighborhood data available on this page. Verify time-sensitive details before making decisions.
#1 Austin Board of Realtors Team. Over 1,000 successful transactions with high-end expertise.
25+ years advising buyers and sellers in this community
Property Details
6 records on file
Every recorded listing, sale, and lease at 3901 Island Knoll Dr, whoever represented it.
Prices shown are list prices. Closed sale prices are available to registered clients in accordance with ACTRIS rules.
Listing timeline with current price, original ask, and market time.
Public record data from county appraisal records. Market value can differ from assessed value.
| Year | Taxes | Total Assessment | Land | Additions |
|---|---|---|---|---|
2025-24.5% | — | $8,926,156 | — | — |
2024-2.5% | — | $11,825,617 | $1,508,001 | — |
2023+29.4% | — | $12,128,671 | $1,508,001 | — |
2022 | — | $9,370,080 | $1,508,001 | — |
District context schools are shown because address-level assigned school fields are not available for this property. Contact the school district directly to verify current boundaries and enrollment eligibility. Ratings from GreatSchools.org.
20% ($534K)
Adjustable assumption - not a lending recommendation.
$2,672,000
Luxury property intelligence
A sourced read on Westlake Hills pricing, timing, and property scale. No automated valuation claim.
List price
$2,672,000
Price per sqft
Not available
Vs. Neighborhood guide reference price
+13.7%
$2.4M · Westlake Hills neighborhood guide · reference price
Days on market
Not available
Original to current
$277K reduction
$2.9M original
Active inventory context
17 listings
Price Position in Westlake Hills
Listed 14% above the Westlake Hills neighborhood guide reference price. Westlake Hills neighborhood guide · reference price.
Source: Public records and Keenan Group review as of Mar 26, 2026.
Request Private Market AnalysisLifestyle, schools, market context, and homes in Westlake Hills
Active listings and buyer search context in Westlake Hills
ZIP-level neighborhoods, schools, lifestyle, and Austin market context
District guide, nearby schools, and homes by attendance area
Private Austin CMA, TCAD context, and pricing strategy
Pricing, prep, launch timing, and Compass marketing strategy
#1 ABOR Team 2024 with $1B+ career sales volume
Westlake Hills is one of Austin's established neighborhoods in the 78746 area. The Keenan Group has specialized in Westlake Hills real estate for 25+ years with 1,000+ career transactions. Contact (512) 415-7653 for current market conditions and available homes.
Source: Keenan Group at Compass Real Estate, #1 Austin Board of Realtors Team (2024)
Car-Dependent
Minimal Transit
Somewhat Bikeable
Walk Score measures walkability based on distance to amenities. Transit Score measures public transportation access. Bike Score measures bikeability based on bike infrastructure and terrain.
5 events on record
Current Price
$2,672,000
Timeline data compiled from MLS records and public records. Information deemed reliable but not guaranteed.
| Year | Taxes | Total Assessment | Land | Additions |
|---|---|---|---|---|
2025-24.5% | — | $8,926,156 | — | — |
2024-2.5% | — | $11,825,617 | $1,508,001 | — |
2023+29.4% | — | $12,128,671 | $1,508,001 | — |
2022 | — | $9,370,080 | $1,508,001 | — |
Timeline merges MLS activity (when permitted) with public records. Some details may be restricted to registered VOW clients.
Comparable homes that recently closed in this area
Neighborhood guide and local insights
Westlake Hills is an incorporated city in Austin's 78746 ZIP code, five minutes west of downtown via Bee Caves Road. Eanes ISD - ranked #1 in Texas by Niche 2026 - draws most buyers. Median home price $2.4M, with estates from $1.2M updates to $10M+ hilltop compounds. Roughly 1,000 total homes sit on wooded lots averaging half an acre to two acres, spread across the hills south of the Colorado River. Lost Creek, Davenport Ranch, The Oaks, and Bee Caves Woods each have a different character - from 1970s ranches on established lots to new-build Hill Country Contemporary estates with 20-foot ceilings and limestone facades. The housing stock is in a generational transition. Original 1970s-80s ranch homes sell as teardowns at $1-2M for land alone, replaced by $3-8M contemporary builds. At any given time, 25-30 homes are actively listed. Inventory is tight, and a meaningful share of deals happen off-market through agent networks. What defines daily life here: morning coffee at Swedish Hill, school drop-off at Eanes Elementary or Bridge Point, a trail run at Wild Basin Preserve, and dinner at Sway or Las Palomas without crossing MoPac. This is a quiet neighborhood built around schools and outdoor access, not nightlife or walkable retail. The people who live here chose it for exactly that trade-off.
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Recent sales for market context
