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Verified property facts
21105 Santa Rosa Ave is zoned for Lago Vista ISD with assigned schools: Lago Vista (6/10) (elementary), Lago Vista (6/10) (middle), Lago Vista (6/10) (high). School assignments should be verified directly with the district.
21105 Santa Rosa Ave 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 21105 Santa Rosa Ave is $1,079. 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.
With 20% down ($15,998) on a 30-year fixed mortgage at approximately 6.75%, the estimated monthly payment for 21105 Santa Rosa Ave is around $505 including principal, interest, and estimated taxes. Actual payment varies by rate, down payment, insurance, and HOA fees.
#1 Austin Board of Realtors Team. Over 1,000 successful transactions with high-end expertise.
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Best Match
Balanced against price, location, and layout so nearby lookalikes rise first. Similar properties in Highland Lake Estates Sec 30
Listing timeline with current price, original ask, and market time.
Welcome to your chance to own a spacious 0.28-acre lot in the sought-after Highland Lake Estates community of Lago Vista. This property is larger and deeper than many neighboring lots, giving you extra room for privacy, landscaping, and flexible home design. The lot is mostly level with a gentle slope, making it a great site to build.
Utilities are readily available with water and sewer lines nearby, AT&T service on site, and electricity provided by PEC. Community guidelines require a minimum 1,700 sq. ft. site-built home with a maximum height of 15 feet.
As part of the Lago Vista Property Owners Association, you’ll enjoy an impressive selection of amenities including lakefront parks, boat ramps, a clubhouse, fitness center, golf course, tennis courts, swimming pool, and more. Whether you love outdoor recreation, social activities, or simply relaxing by the water, this neighborhood has it all.
Located in the highly rated Lago Vista ISD, with elementary, middle, and high schools nearby, this homesite offers both convenience and value. Taxes are low and HOA dues are modest, making this an affordable way to enjoy hill country and lake living.
Just a short drive from Austin, this lot combines small-town charm with quick access to city amenities. Don’t miss this opportunity to create your dream home near Lake Travis in one of Central Texas’s most desirable communities.
Utility estimate is attached in MLS; buyers should obtain an updated estimate as costs may have changed. All information should be independently verified by the buyer.
Property Type
Land
Lot Size
0.28 acres
HOA
$240/mo
Listed by REKonnection, LLC
Property Details
Lot Features
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% ($16K)
$79,990
Luxury property intelligence
A sourced read on Highland Lake Estates Sec 30 pricing, timing, and property scale. No automated valuation claim.
List price
$79,990
Price per sqft
Not available
Vs. Highland Lake Estates Sec 30 median
Not available
Days on market
257 days
Original to current
$4K reduction
$84K original
Active inventory context
Ask for current inventory
Source: MLS Grid / Unlock MLS and Keenan Group review as of May 10, 2026.
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#1 ABOR Team 2024 with $1B+ career sales volume
At $79,990, 21105 Santa Rosa Ave is in the Highland Lake Estates Sec 30 market where there are currently 251 active listings in 78645. The Keenan Group has completed 6 transactions in 78645 as part of 1,000+ career sales totaling $1B+ across Austin.
21105 Santa Rosa Ave is part of a managed community with HOA dues of $240 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.
Active listings near 21105 Santa Rosa Ave
Recent sales for market context
