
Escape to this striking one owner, single level, custom built waterfront estate located in Travis County. This well appointed home is peacefully situated on 6+ acres. Breathtaking views overlook deep water Lake Travis, as well as vistas of tranquil spaces studded with oak trees. The 15+ acre community park and marina are located next to and below this estate, offering undeveloped neighboring land for your enjoyment at this once in a lifetime restful residential resort. The Hill Country Ranch architecture has been constructed with the finest in design and materials. The covered front porch allows one to enjoy wooded landscapes and wildlife. The spacious family room is adorned with a floor to ceiling fireplace, wet bar, wood-beamed ceiling, and access outdoors. The open floor has a nearby gourmet kitchen featuring top of the line appliances, 2 islands, butler’s pantry, wine refrigerator, and more for the avid cook. There is a lovely primary suite with fireplace, verandah access, soaking tub, separate shower, and 2 walk in closets. A second primary suite and 2 additional en-suite bedrooms are located on the opposite side of the home. There is a handsome library with built in bookshelves and fireplace, and an office with built ins. Ease of indoor/outdoor living and entertaining! The rear yard includes a verandah of approx. 1,600 square feet, outdoor kitchen, sparkling pool and spa, and expansive grounds. Other features include pecan cabinetry and built ins, cherry wood millwork, Italian limestone, quartz, Saltillo tile, granite, mesquite flooring, custom tiles, triple-zoned HVAC, security system, well insulated construction, metal roof, and huge garage with storage room. The estate has access to a community water supply, private well, and access to Lake Travis water. There is a community tennis and pickleball court, a gazebo and barbecue area, and marina with 18 slips. Lake Travis ISD. A boat slip is available for separate negotiation. A must see estate!
Property Type
Residential
Year Built
2004
Lot Size
6.37 acres
$/Sq Ft
$787
HOA
$3100/mo
Garage
10 spaces
Pool
Yes
Listed by Compass RE Texas, LLC
Verified property facts
19586 Sandcastle DR is listed at $3,995,000 with 4 bedrooms, 4 full, 1 half bathrooms, 5,074 square feet, 6.37-acre lot. This places it above the 78669 median of $875,000.
19586 Sandcastle DR is zoned for Lake Travis ISD with assigned schools: West Cypress Hills (8/10) (elementary), Lake Travis (8/10) (middle), Lake Travis (8/10) (high). School assignments should be verified directly with the district.
19586 Sandcastle DR is a Residential built in 2004 featuring 4 bedrooms, 4 full, 1 half bathrooms, 5,074 square feet, 6.37-acre lot.
19586 Sandcastle DR is presented by the Keenan Group at Compass Real Estate, the #1 Austin Board of Realtors Team (2024) with 1,000+ career transactions and $1B+ in career volume across Austin's luxury market.
The most recent annual property tax for 19586 Sandcastle DR is $40,885. 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.
#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
Features
Appliances
Flooring
Features
Construction
Lot Features
Fencing
Foundation
Patio / Porch
Parking
Waterfront
Listed 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 |
|---|---|---|---|---|
2025-22.1% | — | $2,848,496 | — | — |
2024-3.4% | — | $3,657,524 | $991,350 | $2,099,735 |
2023+87.1% | — | $3,785,758 | $991,350 | $2,666,174 |
2022 | — | $2,022,900 | $991,350 | $2,794,408 |

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. Ratings from GreatSchools.org.
20% ($799K)
$3,995,000
Luxury property intelligence
A sourced read on Coves On Lake Travis Ph 1 Sec pricing, timing, and property scale. No automated valuation claim.
List price
$3,995,000
Price per sqft
$787/sqft
Vs. Coves On Lake Travis Ph 1 Sec median
Not available
Days on market
1,024 days
Original to current
$505K reduction
$4.5M original
Active inventory context
Ask for current inventory
Source: MLS Grid / Unlock MLS and Keenan Group review as of Jun 15, 2026.
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#1 ABOR Team 2024 with $1B+ career sales volume
With 20% down ($799,000) on a 30-year fixed mortgage at approximately 6.75%, the estimated monthly payment for 19586 Sandcastle DR is around $24,136 including principal, interest, and estimated taxes. Actual payment varies by rate, down payment, insurance, and HOA fees.
At $3,995,000, 19586 Sandcastle DR is in the Coves On Lake Travis Ph 1 Sec market where there are currently 258 active listings in 78669. The Keenan Group has completed 9 transactions in 78669 as part of 1,000+ career sales totaling $1B+ across Austin.
19586 Sandcastle DR includes verified waterfront access: Lake Front,Waterfront. Buyers should confirm shoreline, dock rights, and floodplain status during due diligence.
19586 Sandcastle DR sits on a 6.37-acre lot, providing substantial outdoor living space. Properties of this scale in Austin's luxury market typically feature pool areas, outdoor kitchens, and mature landscaping. Confirm specific amenities with the listing agent.
19586 Sandcastle DR is part of a managed community with HOA dues of $3,100 annually. HOA-managed communities in Austin's luxury market typically provide amenities such as common areas, security, and exterior maintenance. Verify current dues and rules with the HOA directly.
Answers use visible listing facts, school context, and neighborhood data available on this page. Verify time-sensitive details before making decisions.
Car-Dependent
N/A
N/A
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.
8 events on record
Current Price
$3,995,000
Timeline data compiled from MLS records and public records. Information deemed reliable but not guaranteed.
| Year | Taxes | Total Assessment | Land | Additions |
|---|---|---|---|---|
2025-22.1% | — | $2,848,496 | — | — |
2024-3.4% | — | $3,657,524 | $991,350 | $2,099,735 |
2023+87.1% | — | $3,785,758 | $991,350 | $2,666,174 |
2022 | — | $2,022,900 | $991,350 | $2,794,408 |
Timeline merges MLS activity (when permitted) with public records. Some details may be restricted to registered VOW clients.
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