Harris County property record for 643 Aldersgate Ct, Katy, TX 77450
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 3,511 sqft · built 1974 |
| Lot Size | 0.251 acres (10,920 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $261,300 (Aug 2012) |
| Tax Bill | $6,168 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 105-662-000-0025 |
| Primary APN | 105-662-000-0025 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Plumbing Fixtures | 13 Plumbing Fixtures |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 3,511 sqft Living Area |
| 1st Floor Area | 2,187 sqft |
| Game Room | Game Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1974 |
|---|---|
| Effective Year Built | Effective 1974 |
| Architectural Style | Traditional |
| Exterior Material | Brick |
| Construction Type | Frame |
| Foundation Type | Slab (Mat/Raft) |
| Lot Area | 10,920 sqft (0.251 acres) |
| View / Lot | Neighborhood |
| Garage Area | 483 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Enclosed Porch |
| Porch Area | 483 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 1056620000025 |
|---|---|
| Street Address | 643 ALDERSGATE CT |
| City | KATY |
| State | TX |
| Zip | 77450-2201 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LT 25 BLK 3 NOTTINGHAM COUNTRY SEC 1 R/P |
| Legal Subdivision | NOTTINGHAM COUNTRY SEC 1 R/P |
| Legal Block | 3 |
| Legal Lot Number | 25 |
| Jurisdiction | HARRIS TX |
| Township / Civil Division | HOUSTON |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 454600 |
Source: Harris County records, as of September 29, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 643 ALDERSGATE CT, KATY, TX 77450-2201 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 16, 2012 · Amount on Record |
| Deed Sale | Aug 16, 2012 · Amount on Record |
| Deed Document Number | 2012373116 |
| Deed Book / Page | 035-42 / 0084 |
| Record Updated | Oct 29, 2026 |
Source: Harris County assessment roll, as of September 29, 2026
| Type | Name |
|---|---|
| State | Texas |
| County | Harris County |
| Unified School District | Katy Independent School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $392,283 (+1.52%) Land $107,898 Building $284,385 | $392,283 (+1.52%) Land $107,898 Building $284,385 | |
| 2025 | $6,168.00 (+20.09%) Homeowner's exemption | $386,426 (+2.31%) Land $107,898 Building $278,528 | $386,426 (+2.31%) Land $107,898 Building $278,528 |
| 2024 | $5,136.00 (+11.05%) | ||
| 2023 | $377,686 Land $107,898 Building $269,788 | $377,686 Land $107,898 Building $269,788 | |
| 2022 | $4,625.00 (-10.59%) | ||
| 2020 | $5,173.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective May 17, 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 |
| Flood Insurance Cost | Premium on Record median of 80 policies |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 80 in force |
| Nearby Flood Claims | 12 (2009–2021) |
| Claims Outside the SFHA | 12 of 12 |
| Most Recent Claim | May 2021 · rainfall accumulation |
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 | MASON CREEK UTILITY DISTRICT serves 8,900 people · EPA ID TX1010379 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Mar 2024 |
| Lead | 2 ppb (2023–2025) action level 15 ppb |
| 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.
Source: FCC Broadband Data Collection, based on 394 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 1,000 / 75 |
| T-Mobile Fixed Wireless | 100 / 20 |
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