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#1 Austin Board of Realtors Team 2024#1 Austin Board of Realtors Team 2024Loading
Verified property facts
21105 Santa Carlo 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 Carlo 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 Carlo Ave is $1,215. 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 ($9,900) on a 30-year fixed mortgage at approximately 6.75%, the estimated monthly payment for 21105 Santa Carlo Ave is around $358 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.
25+ years advising buyers and sellers in this community
Listing timeline with current price, original ask, and market time.
Excellent spot to build on a quiet cul de sac. Very nice new construction is being built just a few houses down. There is a house next door to this lot and evidence of potential utilities already in place in the cul de sac a couple of lots down. No time limit as to when to build, or no restrictions on who to build with, and you can enjoy the amenities while designing and building your new dream home. Enjoy life by the lake - a small lakeside community with access to Lake Travis, a playground, pool, tennis, and more! The property is approx. 1 mile to Emerald boat ramp, which is private for LVPOA members. Survey available and buyer to verify all build requirements, utilities, floodplain, and restrictions.
Property Type
Land
Lot Size
0.22 acres
HOA
$200/mo
Listed by Realty Texas 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% ($10K)
$49,500
Luxury property intelligence
A sourced read on Highland Lake Estates Sec 31 pricing, timing, and property scale. No automated valuation claim.
List price
$49,500
Price per sqft
Not available
Vs. Highland Lake Estates Sec 31 median
Not available
Days on market
769 days
Original to current
$10.4K reduction
$59.9K 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 $49,500, 21105 Santa Carlo Ave is in the Highland Lake Estates Sec 31 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 Carlo Ave is part of a managed community with HOA dues of $200 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.
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