900 Mammoth Ct, Round Rock, TX 78681 Property Records

Williamson County property record for 900 Mammoth Ct, Round Rock, TX 78681

Property Summary

Property Type	Single Family Home
Details	2 ba · 1,682 sqft · built 2000
Lot Size	0.163 acres (7,119 sqft)
Owner	2 Company Names on File
Tax Bill	$6,814 (2025)
Deeds & Mortgages	Jun 2022 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`R-16-5014-000C-0087`

Property Details

APN / Parcel Number

Primary APN	`R-16-5014-000C-0087`
Alternative APNs	`R393808` `212212`

Interior

Full Baths	2 Baths
Stories	1 Story
Building Area	1,682 sqft Living Area
1st Floor Area	1,682 sqft
Flooring	Carpet
Interior Walls	Wallboard/Drywall
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2000
Effective Year Built	Effective 2000
Exterior Material	Stone
Roof Type	Hip
Lot Area	7,119 sqft (0.163 acres)
Garage Area	399 sqft
Parking Spaces	1 Parking Space
Porch	Open Porch
Porch Area	135 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Heating Fuel	Gas
Sewer	Connected

Location & Zoning

Account Number	R165014000C0087
Street Address	900 MAMMOTH CT
City	ROUND ROCK
State	TX
Zip	78681-1113
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	SF2
Legal Description	S7285 - PRESERVE AT STONE OAK PH 1 SEC 4, BLOCK C, LOT 87
Legal Subdivision	PRESERVE AT STONE OAK PH 1 SEC 4
Legal Phase	1
Legal Block	C
Legal Lot Number	87
Jurisdiction	WILLIAMSON TX
Township / Civil Division	ROUND ROCK-GEORGETOWN
Census Block Group	2
Census Block	2000
Census Tract	20608

Owner

900 Mammoth Ct is owned by a company that acquired it in August 2024.

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

Owner of Record	2 Company Names on File
Mailing Address	2524 RIFLEMAN CV, LEANDER, TX 78641-3492
Owner Type	Company
Vesting	Limited Liability Partnership

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

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 6, 2024
Deed Sale	Aug 6, 2024
Prior Sale	Jun 20, 2022 · Amount on File
Deed Document Number	202462693
Record Updated	Oct 29, 2026

June 2022: Vendor's Lien, Transfer

Document Type	Vendor's Lien
Jurisdiction	WILLIAMSON TX
Recording Date	Jun 20, 2022
Property Address	900 MAMMOTH CT, ROUND ROCK, TX 78681-1113
Document Number	0000074826
Map Reference	CAB S SL 7-9
Instrument Date	Jun 16, 2022
Instrument	2022074826
Transaction Type	Transfer
Record Updated	Jul 1, 2022
Title Company	AUSTIN TITLE COMPANY

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2524 RIFLEMAN CV, LEANDER, TX 78641-3492

Mortgage

Document Number	0000074827
Date	Jun 20, 2022
Instrument	2022074827

Lender

Name	BETTER MORTGAGE CORPORATION
Type	Mortgage Company
Special Notes	Seller Financed

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jul 1, 2052

Tax Assessment & Valuation

The 2025 property tax bill for 900 Mammoth Ct was $6,814, up 5.2% from the year before.

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

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$6,814.00 (+5.24%)	$313,831 Land $81,000 Building $232,831	$313,831 Land $81,000 Building $232,831
2024	$6,475.00 (+4.82%)
2023	$6,177.00 (+113.52%) Homeowner's exemption Senior Citizen's exemption	$352,208 Land $86,000 Building $266,208	$352,208 Land $86,000 Building $266,208
2022	$2,893.00

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

Flood

FEMA maps place 900 Mammoth Ct in Zone X, an area of minimal flood risk.

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	1 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

Wildfire risk around 900 Mammoth Ct is low, with a 0.01% annual chance of wildfire.

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

Wildfire Risk	Low lower than 80% of the US · lower than 94% of Texas
Wildfire Likelihood	0.01% annual chance
Exposure	Indirect within ember reach

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 ROUND ROCK serves 130,662 people · EPA ID TX2460003
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, 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 536 locations within half a mile, as of December 31, 2025

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

May also be available: SOS Communications, VTX Communications, Western Broadband.