#1 Austin Board of Realtors Team 2024#1 Austin Board of Realtors Team 2024This property has sold on August 31, 2022. Looking for something similar? Contact us or browse available homes.
503 Heron DR
Austin, TX, 78734
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$1,250,000
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Custom designed by Marley Porter "Living Architecture" Romantic, Private, Naturally Lighted Modern Open-Floorpan and backs to the Balcones Canyonlands Preserve. You feel like you are in a treehouse when looking out the back of this home!NO HOA's Custom built by Kerry Martin "Enertech Builders" If you are looking for a modern well built with privacy, this home is worth your time to tour. If you are a wildlife and bird-watcher this home is surrounded by a perpetual preserve. Quiet low traffic street in Cardinal Hills 3, birds everywhere!
Property Type
Residential
Year Built
2022
Lot Size
0.40 acres
$/Sq Ft
$428
Garage
2 spaces
Listed by Marotz Realty Partners
Property Details
Features
Appliances
Flooring
Features
Construction
Lot Features
Foundation
Patio / Porch
Parking
Verified property facts
503 Heron DR is listed at $1,250,000 with 4 bedrooms, 4 full bathrooms, 2,919 square feet, 0.40-acre lot. This places it above the ZIP 78734 single-family closed-sale median price of $640,000 (ZIP 78734 geography · single-family closed sales · median sale price · trailing 12 months as of Sep 4, 2026).
503 Heron DR is zoned for Lake Travis ISD with assigned schools: Lake Travis (5/10) (elementary), Hudson Bend (7/10) (middle), Lake Travis (8/10) (high). School assignments should be verified directly with the district.
503 Heron DR is a Residential built in 2022 featuring 4 bedrooms, 4 full bathrooms, 2,919 square feet, 0.40-acre lot.
503 Heron DR is listed by Marotz Realty Partners. Keenan Group at Compass presents this IDX listing and provides the accompanying market analysis using MLS Grid / Unlock MLS data reviewed as of Apr 25, 2026.
The most recent annual property tax for 503 Heron DR is $12,697. 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.
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1 record on file
Every recorded listing, sale, and lease at 503 Heron DR, whoever represented it.
Prices shown are list prices. Closed sale prices are available to registered clients in accordance with ACTRIS rules.
Listing timeline 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 |
|---|---|---|---|---|
2025-13.6% | — | $976,179 | — | — |
2024+65.2% | — | $1,130,050 | $184,000 | $802,428 |
2023+968.8% | — | $684,062 | $320,000 | $810,050 |
2021 | — | $64,000 | $80,000 | — |
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% ($250K)
Adjustable assumption - not a lending recommendation.
$1,250,000
Luxury property intelligence
A sourced read on Cardinal Hills Unit 03 pricing, timing, and property scale. No automated valuation claim.
List price
$1,250,000
Price per sqft
$428/sqft
Vs. Neighborhood guide reference price
Not available
Days on market
Not available
Original to current
No verified reduction
$1.3M original
Active inventory context
Ask for current inventory
Source: MLS Grid / Unlock MLS and Keenan Group review as of Apr 25, 2026.
Request Private Market AnalysisZIP-level neighborhoods, schools, lifestyle, and Austin market context
District guide, nearby schools, and homes by attendance area
Private Austin CMA, TCAD context, and pricing strategy
Pricing, prep, launch timing, and Compass marketing strategy
#1 ABOR Team 2024 with $1B+ career sales volume
This page does not assume a mortgage rate or publish a monthly payment for 503 Heron DR. A property-specific estimate requires a current lender rate, chosen down payment, taxes, insurance, and any verified association dues.
As of Apr 25, 2026, 503 Heron DR is offered at $1,250,000. The current MLS snapshot shows 174 active listings in 78734. Keenan Group has completed 16 verified transactions in 78734 within its 1,000+ completed transactions and $1B+ career volume across Austin.
503 Heron DR was built in 2022, making it 4 years old with relatively recent construction.
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
Somewhat Bikeable
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.
7 events on record
Current Price
$1,250,000
Timeline data compiled from MLS records and public records. Information deemed reliable but not guaranteed.
| Year | Taxes | Total Assessment | Land | Additions |
|---|---|---|---|---|
2025-13.6% | — | $976,179 | — | — |
2024+65.2% | — | $1,130,050 | $184,000 | $802,428 |
2023+968.8% | — | $684,062 | $320,000 | $810,050 |
2021 | — | $64,000 | $80,000 | — |
Timeline merges MLS activity (when permitted) with public records. Some details may be restricted to registered VOW clients.
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