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#1 Austin Board of Realtors Team 2024#1 Austin Board of Realtors Team 2024Loading
Verified property facts
21107 Santa Monica 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.
21107 Santa Monica 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 21107 Santa Monica Ave is $4,088. 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 ($80,000) on a 30-year fixed mortgage at approximately 6.75%, the estimated monthly payment for 21107 Santa Monica Ave is around $2,416 including principal, interest, and estimated taxes. Actual payment varies by rate, down payment, insurance, and HOA fees.
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Best Match
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The property at 21107 Santa Monica Ave, Lago Vista, TX 78645, is a 1.26-acre lot in the sought-after Highland Lake Estates neighborhood, offering potential for two custom homes or two duplexes per lot. Architectural plans are included, making it ideal for developers or investors. Key Features of Lago Vista: Recreation: Nestled on the north shore of Lake Travis, Lago Vista offers outdoor activities like boating, fishing, hiking, and golfing. Community Amenities: Parks, cultural events, and a welcoming community. Lake Access: Close to: Arkansas Bend Park (5 miles) with boat ramps and docks. Gloster Bend Recreation Area (6 miles), ideal for water activities. Development Potential: This lot is approved for two luxury homes or two duplexes per subdivided lot, with permits and plans ready for turnover: Custom Design Features: Plans for three-story homes, including: Boat garages and three-car garages, catering to lake lifestyle needs. Floodplain Consideration: While part of the lot is in a floodplain, all designs meet local regulations, ensuring safety and compliance. Proximity to Boating Facilities: Located near Lake Travis, this property provides easy access to boat ramps for seamless lake enjoyment. Investment Highlights: This turnkey development opportunity blends modern luxury with lakeside convenience. With architectural plans included, buyers can move forward immediately and maximize the property's potential
Property Type
Land
Lot Size
1.26 acres
HOA
$240/mo
Listed by Key Realty Austin
Property Details
Features
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% ($80K)
$400,000
Luxury property intelligence
A sourced read on Highland Lake Estates Sec 30 pricing, timing, and property scale. No automated valuation claim.
List price
$400,000
Price per sqft
Not available
Vs. Highland Lake Estates Sec 30 median
Not available
Days on market
531 days
Original to current
No verified reduction
$350K original
Active inventory context
Ask for current inventory
Source: MLS Grid / Unlock MLS and Keenan Group review as of May 7, 2026.
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#1 ABOR Team 2024 with $1B+ career sales volume
At $400,000, 21107 Santa Monica 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.
21107 Santa Monica 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 21107 Santa Monica Ave
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