Harris County property record for 18 William Ave, Baytown, TX 77520
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,688 sqft · built 1954 |
| Lot Size | 0.393 acres (17,136 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $24,288 (Apr 2014) |
| Tax Bill | $4,911 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 074-143-010-0008 |
| Primary APN | 074-143-010-0008 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Plumbing Fixtures | 7 Plumbing Fixtures |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,688 sqft Living Area |
| 1st Floor Area | 1,688 sqft |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1954 |
| Architectural Style | Traditional |
| Exterior Material | Brick Veneer |
| Construction Type | Brick |
| Foundation Type | Slab (Mat/Raft) |
| Lot Area | 17,136 sqft (0.393 acres) |
| View / Lot | Neighborhood |
| Garage Area | 400 sqft |
| Parking Spaces | 3 Parking Spaces |
| Porch | Open Frame Porch |
| Porch Area | 712 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 0741430100008 |
|---|---|
| Street Address | 18 WILLIAM AVE |
| City | BAYTOWN |
| State | TX |
| Zip | 77520-2730 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LT 8 & W 1/2 OF LT 9 BLK 10 WOODLAWN |
| Legal Subdivision | WOODLAWN |
| Legal Block | 10 |
| Legal Lot Number | 8,9 |
| Jurisdiction | HARRIS TX |
| Township / Civil Division | BAYTOWN |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 254300 |
18 William Ave is owned and occupied by two individuals who bought it in April 2014.
Source: Harris County records, as of September 29, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 18 WILLIAM AVE, BAYTOWN, TX 77520-2730 |
| 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.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 2, 2014 · Amount on File |
| Deed Sale | Apr 2, 2014 · Amount on File |
| Prior Sale | Mar 18, 2009 |
| Deed Document Number | 2014133106 |
| Deed Book / Page | 091-03 / 1307 |
| Prior Transfer Date | Apr 1, 2014 |
| Prior Transfer Doc | 0000133106 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 18 William Ave was $4,911, up 324.5% from the year before.
Source: Harris County assessment roll, as of September 29, 2026
| Type | Name |
|---|---|
| State | Texas |
| Municipality | Baytown City |
| County | Harris County |
| Unified School District | Goose Creek Consolidated Independent School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $194,065 (+2.09%) Land $78,145 Building $115,920 | $194,065 (+2.09%) Land $78,145 Building $115,920 | |
| 2025 | $4,911.00 (+324.46%) | $190,091 Land $78,145 Building $111,946 | $190,091 Land $78,145 Building $111,946 |
| 2024 | $1,157.00 | ||
| 2023 | $197,226 Land $34,607 Building $162,619 | $197,226 Land $34,607 Building $162,619 | |
| 2022 | $1,055.00 | ||
| 2020 | $662.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 18 William Ave in Zone X, an area of minimal flood risk, though there have been 8 flood claims nearby since 1981.
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 File median of 14 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 14 in force |
| Nearby Flood Claims | 8 (1981–2019) |
| Claims Outside the SFHA | 8 of 8 |
| Most Recent Claim | Sep 2019 · Tropical Storm Imelda |
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.
The area around 18 William Ave has no burnable land within ember reach, so its wildfire risk is not rated.
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 | CITY OF BAYTOWN serves 86,004 people · EPA ID TX1010003 |
|---|---|
| Water Source | Purchased surface water from BAYTOWN AREA WATER AUTHORITY |
| Last State Inspection | Jul 2025 |
| 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 | 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 629 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| Lyte Fiber Fiber | 2,500 / 2,500 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: T-Mobile.
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