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Verified property facts
21307 Cardinal 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.
21307 Cardinal 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 21307 Cardinal Ave is $10,175. 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 ($35,000) on a 30-year fixed mortgage at approximately 6.75%, the estimated monthly payment for 21307 Cardinal Ave is around $1,756 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.
Flat, 0.6-acre waterfront lot on Lake Travis with year-round lake views and the potential to build a private boat dock right in your backyard. Situated on a deep, protected cove that opens directly to skiable Lake Travis, this lot gives you calm water in the cove and open water just beyond. Mature oak trees provide natural shade and character, and the flat terrain makes for a straightforward build. Full utilities are available at the street. As a Lago Vista POA member, you get access to a network of private waterfront parks, a marina, boat launch, fishing pier, community pool, and golf course. Short-term rentals are permitted, making this a strong investment opportunity as well. The adjoining lot is also available, offering the chance to combine parcels for a larger build site or added privacy. Located about 20 minutes from Cedar Park and 35 minutes from Austin, this is lakeside Hill Country living without the commute trade-off.
Property Type
Land
Lot Size
0.66 acres
HOA
$250/mo
Listed by Compass RE Texas, LLC
Property Details
Features
Lot Features
Fencing

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% ($35K)
$175,000
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List price
$175,000
Price per sqft
Not available
Vs. Emerald Bend Sec 01 median
Not available
Days on market
43 days
Original to current
No verified reduction
$175K 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 $175,000, 21307 Cardinal Ave is in the Emerald Bend Sec 01 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.
21307 Cardinal Ave includes verified waterfront access. Buyers should confirm shoreline, dock rights, and floodplain status during due diligence.
21307 Cardinal Ave is part of a managed community with HOA dues of $250 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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