3505 Shellcastle Ln, Round Rock, TX 78681 Property Records

Williamson County property record for 3505 Shellcastle Ln, Round Rock, TX 78681

Property Summary

Property Type	Single Family Home
Details	2 ba · 2,031 sqft · built 2007
Lot Size	0.16 acres (6,983 sqft)
Owner	2 Individual Names on File
Tax Bill	$4,152 (2025)
Deeds & Mortgages	Dec 2018 Sale
Flood Zone	Zone X (minimal risk)
APN	`R-16-5693-000F-0007`

Property Details

APN / Parcel Number

Primary APN	`R-16-5693-000F-0007`
Alternative APNs	`R460784` `260989`

Interior

Full Baths	2 Baths
Stories	1 Story
Building Area	2,031 sqft Living Area
1st Floor Area	2,031 sqft
Interior Walls	Wallboard/Drywall
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2007
Effective Year Built	Effective 2008
Exterior Material	Brick Veneer
Foundation Type	Slab (Mat/Raft)
Roof Type	Gable
Lot Area	6,983 sqft
Garage Area	441 sqft
Parking Spaces	2 Parking Spaces
Porch	Open Porch
Porch Area	163 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Account Number	R460784
Street Address	3505 SHELLCASTLE LN
City	ROUND ROCK
State	TX
Zip	78681-1143
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	S8720 - VILLAGE AT MAYFIELD RANCH PH 3, BLOCK F, LOT 7
Legal Subdivision	VILLAGE AT MAYFIELD RANCH
Legal Phase	3
Legal Block	F
Legal Lot Number	7
Jurisdiction	WILLIAMSON TX
Township / Civil Division	ROUND ROCK-GEORGETOWN
Census Block Group	2
Census Block	2006
Census Tract	20608

Owner

Source: Williamson County records · APN R-16-5693-000F-0007

Assessment roll updated August 1, 2025 · Last verified October 2025

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on File
Mailing Address	3505 SHELLCASTLE LN, ROUND ROCK, TX 78681-1143
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Dec 05, 2018
Deed Sale	Dec 05, 2018
Prior Sale	Mar 25, 2008
Deed Document Number	2018106952
Record Updated	Jun 08, 2026

December 2018: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	WILLIAMSON TX
Recording Date	Dec 05, 2018
Property Address	3505 SHELLCASTLE LN, ROUND ROCK, TX 78681-1143
Document Number	0000106952
Instrument Date	Dec 05, 2018
Instrument	106952
Transaction Type	Transfer
Record Updated	Dec 20, 2018
Title Company	INDEPENDENCE TITLE

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Married Couple
Address	3505 SHELLCASTLE LN ROUND ROCK TX 786811143, ROUND ROCK, TX 78681-1143

Tax Assessment & Valuation

Source: Williamson County records · Assessment roll updated August 1, 2025 · Last verified October 2025

Property Jurisdictions

Type	Name
State	Texas
County	Williamson County
Municipality	Round Rock City
Unified School District	Round Rock Independent School District (PK - 12)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$4,152.00 (+3.85%) Homeowner's exemption Senior Citizen's exemption	$484,690 (+4.9%) Land $120,000 Building $364,690	$484,690 (+4.9%) Land $120,000 Building $364,690
2023	$3,998.00 (-28.48%) Homeowner's exemption Senior Citizen's exemption	$462,038 Land $136,000 Building $326,038	$462,038 Land $136,000 Building $326,038
2022	$5,590.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of October 5, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	1 in force

Wildfire

Wildfire Risk	Low lower than 80% of the US · lower than 94% of Texas
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
T-Mobile USA Fixed Wireless	100 / 20

May also be available: AT&T, Electronic Corporate Pages, SOS Communications, Valley Telephone Cooperative, Inc. (TX).

Based on FCC filings for 731 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	CITY OF ROUND ROCK serves 130,662 people
Water Source	Surface water
Last State Inspection	Sep 2023
Lead	5 ppb (2021–2023) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.