Williamson County property record for 3640 Rosalina Loop, Round Rock, TX 78665
| Property Type | Single Family Home |
|---|---|
| Details | 2 ba · 2,022 sqft · built 2010 |
| Lot Size | 0.194 acres (8,448 sqft) |
| Owner | Company Name on File |
| Tax Bill | $8,462 (2025) |
| Deeds & Mortgages | Apr 2019 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | R-16-4911-00OO-0030 |
| Primary APN | R-16-4911-00OO-0030 |
|---|---|
| Alternative APNs |
|
| Full Baths | 2 Baths |
|---|---|
| Stories | 1 Story |
| Building Area | 2,022 sqft Living Area |
| 1st Floor Area | 2,022 sqft |
| Flooring | Tile |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 2010 |
|---|---|
| Effective Year Built | Effective 2010 |
| Exterior Material | Brick Veneer |
| Roof Type | Hip |
| Lot Area | 8,448 sqft (0.194 acres) |
| Garage Area | 462 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 296 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Account Number | R16491100OO0030 |
|---|---|
| Street Address | 3640 ROSALINA LOOP |
| City | ROUND ROCK |
| State | TX |
| Zip | 78665-5681 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S9437 - PALOMA LAKE SEC 18, BLOCK OO, LOT 30 |
| Legal Subdivision | PALOMA LAKE SEC 18 |
| Legal Block | OO |
| Legal Lot Number | 30 |
| Jurisdiction | WILLIAMSON TX |
| Township / Civil Division | TAYLOR |
| Census Block Group | 3 |
| Census Block | 3017 |
| Census Tract | 20818 |
3640 Rosalina Loop is owned by a company that acquired it in April 2019.
Source: Williamson County records, as of September 11, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 7501 BLUE BEACH CV, AUSTIN, TX 78759-6466 |
| Owner Type | Company |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Apr 29, 2019 |
| Deed Sale | Apr 29, 2019 |
| Prior Sale | Aug 31, 2016 · Amount on File |
| Deed Document Number | 201935369 |
| Prior Transfer Date | Aug 26, 2016 |
| Prior Transfer Doc | 0000081107 |
| Record Updated | Oct 29, 2026 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | WILLIAMSON TX |
| Recording Date | Apr 29, 2019 |
| Property Address | 3640 ROSALINA LOOP, ROUND ROCK, TX 78665-5681 |
| Document Number | 0000035369 |
| Instrument Date | Apr 26, 2019 |
| Instrument | 35369 |
| Transaction Type | Transfer |
| Record Updated | May 13, 2019 |
| Title Company | AUSTIN TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 7501 BLUE BEACH CV AUSTIN TX 787596466, AUSTIN, TX 78759-6466 |
The 2025 property tax bill for 3640 Rosalina Loop was $8,462, up 5.3% from the year before.
Source: Williamson County assessment roll, as of September 11, 2026
| Type | Name |
|---|---|
| State | Texas |
| County | Williamson County |
| Unified School District | Round Rock Independent School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $8,462.00 (+5.29%) | $382,255 Land $81,500 Building $300,755 | $382,255 Land $81,500 Building $300,755 |
| 2024 | $8,037.00 (-7.71%) | ||
| 2023 | $8,708.00 (-18.54%) | $432,420 Land $86,000 Building $346,420 | $432,420 Land $86,000 Building $346,420 |
| 2022 | $10,690.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3640 Rosalina Loop 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 | 9 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 risk around 3640 Rosalina Loop is low, with a 0.03% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 66% of the US · lower than 90% of Texas |
|---|---|
| Wildfire Likelihood | 0.03% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | PALOMA LAKE MUD 2 serves 2,265 people · EPA ID TX2460165 |
|---|---|
| Water Source | Purchased surface water from CITY OF ROUND ROCK |
| Last State Inspection | Oct 2025 |
| Lead | Under 1 ppb (2024–2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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.
Source: FCC Broadband Data Collection, based on 430 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 |
May also be available: SOS Communications, VTX Communications.
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