Waller County property record for 2503 Big Basin Trl, Katy, TX 77493
| Property Type | Single Family Home |
|---|---|
| Details | 2,759 sqft · built 2022 |
| Lot Size | 0.278 acres (12,126 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $13,341 (2025) |
| Deeds & Mortgages | May 2025 Mortgage Apr 2023 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 422403-001-016-000 |
| Primary APN | 422403-001-016-000 |
|---|---|
| Alternative APNs |
|
| Stories | 2 Stories |
|---|---|
| Building Area | 2,759 sqft Living Area |
| 1st Floor Area | 1,826 sqft |
| Year Built | Built 2022 |
|---|---|
| Effective Year Built | Effective 2022 |
| Lot Area | 12,126 sqft (0.278 acres) |
| Lot Dimensions | 146 ft deep x 83 ft wide |
| Garage Area | 462 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 380 sqft |
| Street Address | 2503 BIG BASIN TRL |
|---|---|
| City | KATY |
| State | TX |
| Zip | 77493-5316 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S422403 CANE ISLAND 43 BLK 1 LOT 16 |
| Legal Subdivision | CANE ISLAND 43 |
| Legal Block | 1 |
| Legal Lot Number | 16 |
| Jurisdiction | WALLER TX |
| Township / Civil Division | BROOKSHIRE |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 680100 |
2503 Big Basin Trl is owned and occupied by two individuals.
Source: Waller County records, as of May 26, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 2503 BIG BASIN TRL, KATY, TX 77493-5316 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| May 19, 2025 | Deed of Trust, Mortgage · FHA Mortgage OUTAMATION INC |
| Apr 18, 2023 | Vendor's Lien, Subdivision Related Transfer · FHA Mortgage CORNERSTONE HOME LENDING |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WALLER TX |
| Property Address | 2503 BIG BASIN TRL, KATY, TX 77493-5316 |
| Transaction Type | Mortgage |
| Record Updated | Mar 20, 2026 |
| Name | Verified Name |
|---|---|
| Address | 2503 BIG BASIN TRL, KATY, TX 77493-5316 |
| Document Number | 0002505693 |
|---|---|
| Date | May 19, 2025 |
| Instrument | 2505693 |
| Name | OUTAMATION INC |
|---|---|
| Type | Non-Lending Institution |
| Address | POMPANO BEACH, FL 33067 |
| Type | FHA Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 480 Months |
| Due | May 1, 2065 |
| Document Type | Vendor's Lien |
|---|---|
| Jurisdiction | WALLER TX |
| Recording Date | Apr 18, 2023 |
| Property Address | 2503 BIG BASIN TRL, KATY, TX 77493-5316 |
| Document Number | 0002304356 |
| Map Reference | FILE 2208775 |
| Instrument Date | Apr 18, 2023 |
| Instrument | 2304356 |
| Transaction Type | Subdivision Related Transfer |
| Record Updated | Mar 20, 2026 |
| Title Company | PRIOR TITLE, PRIORITY TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 2503 BIG BASIN TRL, KATY, TX 77493-5316 |
| Document Number | 0002304357 |
|---|---|
| Date | Apr 18, 2023 |
| Instrument | 2304357 |
| Name | CORNERSTONE HOME LENDING |
|---|---|
| Type | Mortgage Company |
| Special Notes | Seller Financed |
| Type | FHA Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | May 1, 2053 |
The 2025 property tax bill for 2503 Big Basin Trl was $13,341 with a homeowner's exemption.
Source: Waller County assessment roll, as of May 26, 2026
| Type | Name |
|---|---|
| State | Texas |
| Municipality | Katy City |
| County | Waller County |
| Unified School District | Katy Independent School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $13,341.00 Homeowner's exemption | $524,890 Land $65,000 Building $459,890 | $524,890 Land $65,000 Building $459,890 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 2503 Big Basin Trl in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective May 26, 2025 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 785 policies |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 785 in force |
| Nearby Flood Claims | 55 (2016–2022) |
| Claims Outside the SFHA | 37 of 55 |
| Most Recent Claim | Sep 2022 · tidal / storm surge |
| Claims by Event |
|
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 2503 Big Basin Trl is moderate, ranking above 48% of the US, with a 0.09% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 48% of the US · lower than 77% of Texas |
|---|---|
| Wildfire Likelihood | 0.09% 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 | CITY OF KATY serves 25,253 people · EPA ID TX1010017 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Feb 2025 |
| Lead | 3 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 91 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Fidium Fiber Fiber | 2,000 / 2,000 |
| Xfinity Cable · Fiber in parts of the area | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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