4509 Post Loop, Round Rock, TX 78681 Property Records

Williamson County property record for 4509 Post Loop, Round Rock, TX 78681

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 2,274 sqft · built 2021
Owner	Individual Name on File
Tax Bill	$10,897 (2025)
Deeds & Mortgages	Oct 2021 Sale Oct 2020 Loan Modification + 1 more
Flood Zone	Zone X (minimal risk)
APN	`R-20-5410-10BG-0100`

Property Details

APN / Parcel Number

Primary APN	`R-20-5410-10BG-0100`
Alternative APNs	`R595982` `420011`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Stories	1 Story
Building Area	2,274 sqft Living Area
1st Floor Area	2,274 sqft

Exterior

Year Built	Built 2021
Effective Year Built	Effective 2021
Exterior Material	Stone
Garage Area	441 sqft
Parking Spaces	2 Parking Spaces
Porch	Open Porch

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Account Number	R20541010BG0100
Street Address	4509 POST LOOP
City	ROUND ROCK
State	TX
Zip	78681-2092
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	S12327 - HIGHLANDS AT MAYFIELD RANCH SEC 10B, BLOCK G, LOT 100
Legal Subdivision	HIGHLANDS AT MAYFIELD RANCH SEC 10B
Legal Block	G
Legal Lot Number	100
Jurisdiction	WILLIAMSON TX
Township / Civil Division	ROUND ROCK-GEORGETOWN
Census Block Group	2
Census Block	2000
Census Tract	20609

Owner

Source: Williamson County records, as of September 11, 2026

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	Individual Name on File
Mailing Address	4509 POST LOOP, ROUND ROCK, TX 78681-2092
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Individual(s)

Deeds, Mortgages & Sale History

Date	Document
Oct 1, 2021	Special Warranty Deed, Subdivision Related Transfer TEXAS PREMIER TITLE
Oct 14, 2020	Loan Modification, Mortgage WELLS FARGO BK
Oct 14, 2020	Warranty Deed, Transfer NOT AVAILABLE

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 1, 2021
Deed Sale	Oct 1, 2021
Prior Sale	Oct 14, 2020
Deed Document Number	2021150920
Record Updated	Oct 29, 2026

October 2021: Special Warranty Deed, Subdivision Related Transfer

Document Type	Special Warranty Deed
Jurisdiction	WILLIAMSON TX
Recording Date	Oct 1, 2021
Property Address	4509 POST LOOP, ROUND ROCK, TX 78681-2092
Document Number	0000150920
Map Reference	DOC 2020060695
Instrument Date	Sep 28, 2021
Instrument	2021150920
Transaction Type	Subdivision Related Transfer
Record Updated	Oct 26, 2023
Title Company	TEXAS PREMIER TITLE

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4509 POST LOOP, ROUND ROCK, TX 78681-2092

October 2020: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	WILLIAMSON TX
Property Address	4509 HANNOVER WAY, ROUND ROCK, TX 78681
Document Number	0000126391
Instrument Date	Oct 14, 2020
Transaction Type	Mortgage
Record Updated	Nov 3, 2020
Title Company	OTHER

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	5601 DEMOCRACY DR PLANO TX 750243687, PLANO, TX 75024-3687

Mortgage

Document Number	0000126391
Date	Oct 14, 2020
Instrument	126391

Lender

Name	WELLS FARGO BK
Type	Bank
Address	1445 ROSS AVE, DALLAS, TX 75202-2711

Agreement

Amount	Amount on Record

October 2020: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	WILLIAMSON TX
Recording Date	Oct 14, 2020
Property Address	4509 HANNOVER WAY, ROUND ROCK, TX 78681
Document Number	0000126390
Instrument Date	Oct 7, 2020
Instrument	126390
Transaction Type	Transfer
Record Updated	Nov 3, 2020
Title Company	NOT AVAILABLE

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	5601 DEMOCRACY DR #300 PLANO TX 750243674, 300, PLANO, TX 75024-3674

Tax Assessment & Valuation

Source: Williamson County assessment roll, as of September 11, 2026

Property Jurisdictions

Type	Name
State	Texas
County	Williamson County
Unified School District	Georgetown Independent School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$10,897.00 (+3.95%)	$483,052 (-4.44%) Land $109,000 Building $374,052	$483,052 (-4.44%) Land $109,000 Building $374,052
2024	$10,483.00 (+0.99%)
2023	$10,380.00 (-22.84%)	$505,490 Land $115,000 Building $390,490	$505,490 Land $115,000 Building $390,490
2022	$13,453.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective October 5, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	2 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

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

Wildfire Risk	Moderate above 40% of the US · lower than 85% of Texas
Wildfire Likelihood	0.07% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CITY OF GEORGETOWN serves 191,639 people · EPA ID TX2460001
Water Source	Surface water
Last State Inspection	Jul 2025
Lead	5 ppb (2024–2026) action level 15 ppb

Violations Reported to EPA

Water Quality	Total trihalomethanes not recorded as resolved · Apr 2026
Treatment and Procedure	None last 10 years
Monitoring and Reporting	2 last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 512 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber	5,000 / 5,000
Spectrum Fiber	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
Western Broadband Fixed Wireless	200 / 40

May also be available: SOS Communications, VTX Communications.

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