Co Rd 123, Round Rock, TX Property Records

Williamson County property records for 38 addresses on Co Rd 123, Round Rock, TX · Last verified August 2026

Co Rd 123 Highlights

Properties 38
Median Sale Price $300,000
Deeds and Mortgages on File 27
Median Price per Sqft $179
Owner Occupied 66%
Median Annual Tax Bill $5,006
Median Year Built 1985
Median Ownership Tenure 11 years

Properties on Co Rd 123

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

3730 Co Rd 123

5,151 sqft · built 2005 · 1.12 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,3492025 —Apr 2025 1 Name on Record AssessorUpdated Oct 2025

3742 Co Rd 123

9,000 sqft · built 2002 · 2.13 acres

Last Sale Tax Bill Prior Sale Owner Records
$14,7892024 2 Names on Record AssessorUpdated Apr 2026
Last Sale Tax Bill Prior Sale Owner Records
1 Name on Record Owner Occupied AssessorUpdated Sep 2023

3754 Co Rd 123

5,000 sqft · built 2004 · 2.06 acres

Last Sale Tax Bill Prior Sale Owner Records
—May 2013 $9,4312025 —Jun 2012 1 Name on Record AssessorUpdated Oct 2025

3766 Co Rd 123

5,000 sqft · built 2004 · 1.96 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jul 2001 $8,2692025 1 Name on Record AssessorUpdated Oct 2025

3778 Co Rd 123

6,000 sqft · built 2000 · 2 acres

Last Sale Tax Bill Prior Sale Owner Records
$12,0722025 —Apr 2025 1 Name on Record AssessorUpdated Oct 2025

3800 Co Rd 123

7,250 sqft · built 1999 · 2.1 acres

Last Sale Tax Bill Prior Sale Owner Records
—Aug 2012 $10,9312025 —Sep 2009 1 Name on Record Assessor + 1 DocumentUpdated Oct 2025

3890 Co Rd 123

2.5 ba · 1,696 sqft · built 1984 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,5012025 2 Names on Record Owner Occupied AssessorUpdated May 2026

4000 Co Rd 123

2,094 sqft · built 2003 · 9.68 acres

Last Sale Tax Bill Prior Sale Owner Records
—Apr 2024 $13,2502024 1 Name on Record AssessorUpdated Aug 2026

4021 Co Rd 123

31.5 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 2017 $1082025 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

4201 Co Rd 123

3 ba · 2,543 sqft · built 1978 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
—Dec 2021 $7,0282025 1 Name on Record Assessor + 1 DocumentUpdated Oct 2025

4209 Co Rd 123

3 ba · 2,892 sqft · built 1975 · 0.869 acres

Last Sale Tax Bill Prior Sale Owner Records
$3,7282025 1 Name on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

4221 Co Rd 123

2 ba · 1,750 sqft · built 2007 · 3.79 acres

Last Sale Tax Bill Prior Sale Owner Records
$370,000Jun 2008 $5,0062024 —Apr 2008 2 Names on Record Owner Occupied Assessor + 4 DocumentsUpdated Aug 2026

4225 Co Rd 123

6 ba · 7,844 sqft · built 2021 · 17.9 acres

Last Sale Tax Bill Prior Sale Owner Records
—Dec 2021 $34,6412024 —Jul 2013 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

4227 Co Rd 123

5 ba · 5,981 sqft · built 2015 · 0.88 acres

Last Sale Tax Bill Prior Sale Owner Records
—Dec 2016 $22,6172025 2 Names on Record Owner Occupied AssessorUpdated Oct 2025

4229 Co Rd 123

1 bd · 4 ba · 5,497 sqft · built 2014 · 0.866 acres

Last Sale Tax Bill Prior Sale Owner Records
$300,000Jan 2016 $20,0052025 —Jun 2015 2 Names on Record Owner Occupied AssessorUpdated Aug 2026

4231 Co Rd 123

2 ba · 5,061 sqft · built 1984 · 1.75 acres

Last Sale Tax Bill Prior Sale Owner Records
—Dec 2012 $4,3862025 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

4233 Co Rd 123

5,635 sqft · built 2023 · 9.56 acres

Last Sale Tax Bill Prior Sale Owner Records
—Dec 2024 $12,8602025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

4259 Co Rd 123

7 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jul 2026 $6,7962025 —Apr 2020 1 Name on Record Assessor + 3 DocumentsUpdated Jul 2026

4260 Co Rd 123

2 ba · 2,514 sqft · built 1977 · 1.88 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jan 2023 $8,1642025 —May 2019 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2025

4265 Co Rd 123

2 ba · 1,650 sqft · built 1991 · 7.71 acres

Last Sale Tax Bill Prior Sale Owner Records
—Nov 2024 $3,2222025 —Apr 2020 1 Name on Record Assessor + 2 DocumentsUpdated Aug 2026

4268 Co Rd 123

1 ba · 660 sqft · built 1988 · 0.45 acres

Last Sale Tax Bill Prior Sale Owner Records
—Feb 2016 $2,9852025 2 Names on Record AssessorUpdated Oct 2025

4271 Co Rd 123

2 ba · 1,764 sqft · built 1981 · 1.21 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,9392025 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

4277 Co Rd 123

1 ba · 1,484 sqft · built 1930 · 2 acres

Last Sale Tax Bill Prior Sale Owner Records
—Sep 1982 $3,8502025 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

4285 Co Rd 123

816 sqft · built 1929 · 279 acres

Last Sale Tax Bill Prior Sale Owner Records
—Feb 1997 $2,2002025 2 Names on Record Owner Occupied AssessorUpdated Oct 2025

4304 Co Rd 123

1 acres

Last Sale Tax Bill Prior Sale Owner Records
$100,000Nov 2018 $2,6652025 2 Names on Record Assessor + 2 DocumentsUpdated Jul 2026

4312 Co Rd 123

2 ba · 3,276 sqft · built 2024 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
—Mar 1991 $1,0002025 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

4320 Co Rd 123

3 ba · 1,836 sqft · built 1984 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,4432025 1 Name on Record Owner Occupied AssessorUpdated Oct 2025

4328 Co Rd 123

3 ba · 1,696 sqft · built 1984 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
—Aug 2005 $2,2812025 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Oct 2025

4336 Co Rd 123

2 ba · 1,876 sqft · built 1984 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
—May 2015 $4842025 2 Names on Record Owner Occupied AssessorUpdated Oct 2025

4344 Co Rd 123

2 ba · 1,742 sqft · built 1980 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jul 2019 $4,7152025 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Oct 2025

4345 Co Rd 123

2 ba · 1,340 sqft · built 1980 · 2 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 1996 $1,0172025 2 Names on Record Owner Occupied AssessorUpdated Oct 2025

4356 Co Rd 123

2,159 sqft · built 2021 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,2732025 1 Name on Record Owner Occupied AssessorUpdated May 2026

4357 Co Rd 123

2 ba · 2,520 sqft · built 1982 · 2.21 acres

Last Sale Tax Bill Prior Sale Owner Records
—Sep 1982 $2,1202025 2 Names on Record Owner Occupied AssessorUpdated Oct 2025

4360 Co Rd 123

3 ba · 4,477 sqft · built 1985 · 2 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 1999 $9,1822025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2025

4400 Co Rd 123

2 ba · 1,403 sqft · built 1978 · 0.989 acres

Last Sale Tax Bill Prior Sale Owner Records
$251,200Mar 2015 $5,1672025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

4408 Co Rd 123

2 ba · 1,764 sqft · built 1984 · 1 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 2005 $5,0952025 2 Names on Record Owner Occupied AssessorUpdated Oct 2025

4435 Co Rd 123

5 ba · 5,776 sqft · built 1985 · 40.9 acres

Last Sale Tax Bill Prior Sale Owner Records
—May 2023 $54,5162025 1 Name on Record Assessor + 2 DocumentsUpdated Oct 2025

Wildfire Risk on Co Rd 123

Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020

Wildfire RiskLow
this street's cells rank above 30% of the US · above 10% of Texas
Wildfire LikelihoodAbout 1 in 2,454 per year
ExposureDirect
11 of 16 cells directly exposed · 16 adjoin burnable vegetation

Property Records in Nearby Streets