Bexar County property record for 523 E Bonner Ave, San Antonio, TX 78214
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 805 sqft · built 1955 |
| Lot Size | 0.158 acres (6,900 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $274 (2025) |
| Deeds & Mortgages | Apr 2026 Line of Credit Sep 2021 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 11914-010-0220 |
| Primary APN | 11914-010-0220 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 805 sqft Living Area |
| Gross Area | 983 sqft |
| 1st Floor Area | 805 sqft |
| Utility Area | 24 sqft |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1991 |
| Architectural Style | Contemporary |
| Exterior Material | Asbestos |
| Roof Material | Asphalt |
| Lot Area | 6,900 sqft (0.158 acres) |
| Lot Dimensions | 115 ft deep x 60 ft wide |
| Garage Type | Carport |
| Garage Area | 186 sqft |
| Carport | Carport |
| Carport Area | 186 sqft |
| Porch | Open Porch |
|---|---|
| Porch Area | 24 sqft |
| Patio Area | 178 sqft |
| Shed | 1 Shed |
| Shed Area | 60 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | Floor/Wall Furnace |
| Street Address | 523 E BONNER AVE |
|---|---|
| City | SAN ANTONIO |
| State | TX |
| Zip | 78214-2533 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | NCB 11914 BLK 10 LOT 22 |
| Legal Subdivision | CONV A/S CODE |
| Legal Block | 10 |
| Legal Lot Number | 22 |
| Jurisdiction | BEXAR TX |
| Township / Civil Division | SAN ANTONIO CENTRAL |
| Census Block Group | 1 |
| Census Block | 1011 |
| Census Tract | 150900 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Mission Parkway listed 1975 · 94 contributing resources · NRIS 75001953 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
523 E Bonner Ave is owned and occupied by an individual.
Source: Bexar County records, as of May 26, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 523 E BONNER AVE, SAN ANTONIO, TX 78214-2533 |
| 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 |
|---|---|
| Apr 27, 2026 | Deed of Trust, Mortgage · Line of Credit FIRSTMARK CREDIT UNION |
| Sep 20, 2021 | Deed of Trust, Mortgage · Line of Credit FIRSTMARK CU |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BEXAR TX |
| Recording Date | Apr 27, 2026 |
| Property Address | 523 E BONNER AVE, SAN ANTONIO, TX 78214-2533 |
| Document Number | 0000077090 |
| Instrument Date | Apr 13, 2026 |
| Instrument | 202677090 |
| Transaction Type | Mortgage |
| Record Updated | Jul 12, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Name | Verified Name |
|---|---|
| Address | 523 E BONNER AVE, SAN ANTONIO, TX 78214-2533 |
| Investor | Possibly a Property Investor |
| Document Number | 0000077090, |
|---|---|
| Date | Apr 27, 2026 |
| Instrument | 202677090 |
| Name | FIRSTMARK CREDIT UNION |
|---|
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 60 Months |
| Due | May 1, 2031 |
| Rate | 6.11% |
|---|---|
| Max Rate | -1% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BEXAR TX |
| Property Address | 523 E BONNER AVE, SAN ANTONIO, TX 78214-2533 |
| Transaction Type | Mortgage |
| Record Updated | Sep 29, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0000260897 |
|---|---|
| Date | Sep 20, 2021 |
| Instrument | 20210260897 |
| Name | FIRSTMARK CU |
|---|---|
| Type | Credit Union |
| Address | SAN ANTONIO, TX 78270 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 49 Months |
| Due | Oct 4, 2025 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
The 2025 property tax bill for 523 E Bonner Ave was $274 with exemptions applied, up 15.6% from the year before.
Source: Bexar County assessment roll, as of May 26, 2026
| Type | Name |
|---|---|
| State | Texas |
| County | Bexar County |
| Municipality | San Antonio City |
| Unified School District | Harlandale Independent School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $274.00 (+15.61%) Homeowner's exemption Senior Citizen's exemption | $130,180 Land $46,300 Building $84,620 | $130,920 Land $46,300 Building $84,620 |
| 2024 | $237.00 (-8.14%) | ||
| 2023 | $258.00 (-35.82%) Homeowner's exemption Senior Citizen's exemption | $154,200 Land $55,960 Building $98,240 | $154,200 Land $55,960 Building $98,240 |
| 2022 | $402.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 523 E Bonner Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 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 |
| Community Rating System | Class 6 (20% premium discount) |
| 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 risk around 523 E Bonner Ave is low, with less than 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 99.1% of the US · lower than 99.3% of Texas |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 | SAN ANTONIO WATER SYSTEM serves 2,643,729 people · EPA ID TX0150018 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Aug 2023 |
| Lead | 2 ppb (2022–2024) 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 518 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Alamo Broadband Fixed Wireless | 450 / 100 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
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