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1603 Saint Williams Loop, Round Rock, TX 78681 Property Records

Williamson County property record for 1603 Saint Williams Loop, Round Rock, TX 78681 · Last verified August 2026

Property Summary

Property TypeSingle Family Home
Details2.5 ba · 1,858 sqft · built 1978
Lot Size0.314 acres (13,698 sqft)
OwnerIndividual Name on File
Last Sale$165,000 (Feb 2013)
Tax Bill$8,216 (2025)
Deeds & MortgagesFeb 2022 Transfer
Flood ZoneZone AE (high risk)
APNR-16-5190-000F-0019

Property Details

APN / Parcel Number

Primary APNR-16-5190-000F-0019
Alternative APNs
  • R072289
  • 127547

Interior

Full Baths2.5 Baths
Half Baths1 Half Bath
Stories2 Stories
Building Area1,858 sqft Living Area
1st Floor Area1,278 sqft
2nd Floor Area580 sqft
FlooringCarpet
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1978
Effective Year BuiltEffective 1987
Exterior MaterialStone
Roof TypeGable
Lot Area13,698 sqft (0.314 acres)
Garage Area460 sqft
Parking Spaces2 Parking Spaces
PorchOpen Porch
Porch Area328 sqft
Deck Area90 sqft

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemCentral
Heating FuelGas
SewerConnected

Location & Zoning

Account NumberR165190000F0019
Street Address1603 SAINT WILLIAMS LOOP
CityROUND ROCK
StateTX
Zip78681-5615
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionROUND ROCK WEST SEC 6A, BLOCK F, LOT 19
Legal SubdivisionROUND ROCK WEST SEC 6A
Legal BlockF
Legal Lot Number19
JurisdictionWILLIAMSON TX
Township / Civil DivisionROUND ROCK-GEORGETOWN
Census Block Group1
Census Block1001
Census Tract20503

Owner

Source: Williamson County records · APN R-16-5190-000F-0019

Assessment roll updated September 15, 2025 · Last verified August 2026

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

Owner of RecordIndividual Name on File
Mailing Address1603 SAINT WILLIAMS LOOP, ROUND ROCK, TX 78681-5615
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesVerified Name on Deed
Last SaleFeb 04, 2013 · Amount on Record
Deed SaleFeb 04, 2013 · Amount on Record
Prior SaleAug 16, 2005 · Amount on Record
Deed Document Number201310164
Last Transfer DateFeb 04, 2022
Transfer Doc0000016624
Record UpdatedSep 20, 2026

February 2022: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionWILLIAMSON TX
Recording DateFeb 08, 2022
Property Address1603 SAINT WILLIAMS LOOP, ROUND ROCK, TX 78681-5615
Document Number0000016624
Map ReferenceCAB C SL 281
Instrument DateFeb 04, 2022
Instrument2022016624
Transaction TypeTransfer
Record UpdatedFeb 18, 2022

Transaction

Tax$0.00
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name
Address127 QUINCE ST, 127, HEREFORD, TX 79045-3723

Transferred To (Grantee/Buyer)

NameVerified Name
Address1603 SAINT WILLIAMS LOOP, ROUND ROCK, TX 78681-5615

Tax Assessment & Valuation

Source: Williamson County records · Assessment roll updated September 15, 2025 · Last verified August 2026

Property Jurisdictions

TypeName
StateTexas
CountyWilliamson County
MunicipalityRound Rock City
Unified School DistrictRound 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.

YearTax BillAssessed ValueAssessed Market Value
2025$8,216.00$455,469 (+10.35%) Land $115,500 Building $339,969$455,469 (+10.35%) Land $115,500 Building $339,969
2024$8,216.00 (+13.5%)
2023$7,239.00 (-26.8%)$412,736 Land $110,000 Building $302,736$412,736 Land $110,000 Building $302,736
2022$9,890.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Williamson County (48491C), updated October 5, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 484910205031, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone AE
Special Flood Hazard AreaYes
Flood HazardHigh
100-Year FloodplainYes
1% annual chance
FloodwayNo
Base Flood ElevationVaries along the reach; see FIRM
Flood Insurance RequirementRequired (federally backed mortgages)
Flood Insurance CostPremium on Record
median of 26 individual NFIP policies nearby
Nearby Flood Policies26 in force
Nearby Flood Claims20 (1981–2011)
Claims Outside the SFHA3 of 20
Most Recent ClaimSep 2011, other causes
Claims By Storm
  • Severe Thunderstorms, Dec 1991 · 2 claims

Wildfire

Wildfire RiskLow
above 4% of the US · above 2% of Texas
Wildfire LikelihoodAbout 1 in 9,091 per year
ExposureDirect
burnable vegetation at the parcel

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, availability as of December 31, 2025 · Published October 2026 · based on 194 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
AT&TFiber5,000 / 5,000
SpectrumCable1,000 / 50
VerizonFixed Wireless300 / 20
StarlinkSatellite (low-earth orbit)280 / 30

May also be available at this address: SOS Communications. Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G and 4G LTE

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