100 Nautical Cir, Round Rock, TX 78681 Property Records

Williamson County property record for 100 Nautical Cir, Round Rock, TX 78681

Property Summary

Property Type	Single Family Home
Details	4.5 ba · 4,775 sqft · built 2015
Lot Size	0.41 acres (17,860 sqft)
Owner	2 Individual Names on File
Last Sale	$605,400 (Dec 2019)
Tax Bill	$24,384 (2025)
Deeds & Mortgages	Sep 2021 Transfer Oct 2020 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`R-16-4066-000E-0017`

Property Details

APN / Parcel Number

Primary APN	`R-16-4066-000E-0017`
Alternative APNs	`R533325` `347045`

Interior

Full Baths	4.5 Baths
Half Baths	1 Half Bath
Stories	2 Stories
Building Area	4,775 sqft Living Area
1st Floor Area	3,357 sqft
2nd Floor Area	1,418 sqft
Flooring	Carpet
Interior Walls	Wallboard/Drywall
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2015
Effective Year Built	Effective 2015
Roof Material	Other
Lot Area	17,860 sqft (0.41 acres)
Garage Area	480 sqft
Parking Spaces	3 Parking Spaces
Porch	Open Porch
Porch Area	694 sqft
Outdoor Kitchen / BBQ	Outdoor Kitchen / BBQ

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Account Number	R164066000E0017
Street Address	100 NAUTICAL CIR
City	ROUND ROCK
State	TX
Zip	78681-2519
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	S10763 - HIGHLAND HORIZON PH 3, BLOCK E, LOT 17, ACRES 0.41
Legal Subdivision	HIGHLAND HORIZON PH 3
Legal Block	E
Legal Lot Number	17
Jurisdiction	WILLIAMSON TX
Township / Civil Division	ROUND ROCK-GEORGETOWN
Census Block Group	3
Census Block	3001
Census Tract	20503

Owner

100 Nautical Cir is owned and occupied by two individuals who acquired it in July 2021.

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	2 Individual Names on File
Mailing Address	100 NAUTICAL CIR, ROUND ROCK, TX 78681-2519
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Sep 13, 2021	Transfer on Death Deed, Transfer
Oct 1, 2020	Deed of Trust, Mortgage · Conventional Mortgage CMG MORTGAGE INC
Dec 6, 2019	Vendor's Lien, Transfer · Conventional Mortgage CMG MORTGAGE INC
Jul 16, 2019	Vendor's Lien, Transfer · Conventional Mortgage ONEWEST BANK FSB

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 6, 2019 · Amount on File
Deed Sale	Dec 6, 2019 · Amount on File
Prior Sale	Jul 16, 2019 · Amount on File
Deed Document Number	2019117758
Last Transfer Date	Jul 19, 2021
Transfer Doc	0000139062
Record Updated	Oct 29, 2026

September 2021: Transfer on Death Deed, Transfer

Document Type	Transfer on Death Deed
Jurisdiction	WILLIAMSON TX
Recording Date	Sep 13, 2021
Property Address	100 NAUTICAL CIR, ROUND ROCK, TX 78681-2519
Document Number	0000139062
Map Reference	DOC 201405277
Instrument Date	Jun 19, 2021
Instrument	2021139062
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	100 NAUTICAL CIR, ROUND ROCK, TX 78681-2519

October 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	WILLIAMSON TX
Property Address	100 NAUTICAL CIR, ROUND ROCK, TX 78681-2519
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	TEXAS NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000119225
Date	Oct 1, 2020
Instrument	2020119225

Lender

Name	CMG MORTGAGE INC
Type	Mortgage Company
Address	SAN RAMON, CA 94583

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	180 Months
Due	Oct 1, 2035

December 2019: Vendor's Lien, Transfer

Document Type	Vendor's Lien
Jurisdiction	WILLIAMSON TX
Recording Date	Dec 6, 2019
Property Address	100 NAUTICAL CIR, ROUND ROCK, TX 78681-2519
Document Number	0000117758
Map Reference	DOC 2014095277
Instrument Date	Dec 4, 2019
Instrument	2019117758
Transaction Type	Transfer
Record Updated	Dec 6, 2021

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	100 NAUTICAL CIR, ROUND ROCK, TX 78681-2519

Mortgage

Document Number	0000117759
Date	Dec 6, 2019
Instrument	2019117759

Lender

Name	CMG MORTGAGE INC
Type	Mortgage Company
Special Notes	Seller Financed

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jan 1, 2050

July 2019: Vendor's Lien, Transfer

Document Type	Vendor's Lien
Jurisdiction	WILLIAMSON TX
Recording Date	Jul 16, 2019
Property Address	100 NAUTICAL CIR, ROUND ROCK, TX 78681-2519
Document Number	0000064326
Map Reference	DOC 2014095277
Instrument Date	Jul 12, 2019
Instrument	2019064326
Transaction Type	Transfer
Record Updated	Dec 6, 2021

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	100 NAUTICAL CIR, ROUND ROCK, TX 78681-2519

Mortgage

Document Number	0000064327
Date	Jul 16, 2019
Instrument	2019064327

Lender

Name	ONEWEST BANK FSB
Type	Bank
Special Notes	Seller Financed

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Aug 1, 2049

Tax Assessment & Valuation

The 2025 property tax bill for 100 Nautical Cir was $24,384 with a homeowner's exemption, up 8.4% from the year before.

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

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$24,384.00 (+8.44%) Homeowner's exemption	$1,350,741 Land $184,000 Building $1,166,741	$1,350,741 Land $184,000 Building $1,166,741
2024	$22,487.00 (-2.46%)
2023	$23,054.00 (-1.89%) Homeowner's exemption	$1,210,158 Land $190,000 Building $1,020,158	$1,210,158 Land $190,000 Building $1,020,158
2022	$23,498.00

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

Flood

FEMA maps place 100 Nautical Cir in Zone X, an area of minimal flood risk, though there have been 56 flood claims nearby since 1981.

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
Nearby Flood Claims	56 (1981–2010)
Most Recent Claim	Sep 2010 · rainfall accumulation

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

Wildfire risk around 100 Nautical Cir is low, with a 0.04% annual chance of wildfire.

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

Wildfire Risk	Low lower than 62% of the US · lower than 87% of Texas
Wildfire Likelihood	0.04% annual chance
Exposure	None beyond ember reach

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

Internet Providers

Source: FCC Broadband Data Collection, based on 388 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · Fixed Wireless in parts of the area	5,000 / 5,000
Spectrum Cable	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: Western Broadband.

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