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16935 Union Cavern, San Antonio, TX 78247 Property Records

Bexar County property record for 16935 Union Cavern, San Antonio, TX 78247

Property Summary

Property TypeSingle Family Home
Details4 bd · 2.5 ba · 2,334 sqft · built 2003
Lot Size0.154 acres (6,709 sqft)
Owner2 Individual Names on File
Last Sale$175,100 (Aug 2016)
Tax Bill$4,427 (2025)
Deeds & MortgagesSep 2022 Mortgage
Flood ZoneZone X (minimal risk)
APN17790-023-0040

Property Details

APN / Parcel Number

Primary APN17790-023-0040
Alternative APN
  • 677039

Interior

Bedrooms4 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Total Rooms6 Rooms
Stories2 Stories
Building Area2,334 sqft Living Area
Gross Area3,040 sqft
1st Floor Area957 sqft
2nd Floor Area1,377 sqft

Exterior

Year BuiltBuilt 2003
Effective Year BuiltEffective 2003
Architectural StyleContemporary
Exterior MaterialOther
Foundation TypeSlab (Mat/Raft)
Roof MaterialAsphalt
Lot Area6,709 sqft (0.154 acres)
Garage TypeAttached
Garage Area418 sqft
Parking Spaces2 Parking Spaces
PorchOpen Porch
Porch Area105 sqft
Deck Area288 sqft

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemForced Air with A/C

Location & Zoning

Street Address16935 UNION CAVERN
CitySAN ANTONIO
StateTX
Zip78247-6215
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionNCB 17790 BLK 23 LOT 4 GREEN MOUNTAIN RD SUBD UT-3
Legal SubdivisionRD SUB
Legal Block23
Legal Lot Number4
JurisdictionBEXAR TX
Township / Civil DivisionSAN ANTONIO NORTHEAST
Census Block Group1
Census Block1006
Census Tract121812

Owner

16935 Union Cavern is owned and occupied by two individuals who bought it in August 2016.

Source: Bexar County records, as of May 26, 2026

Owner of Record2 Individual Names on File
Mailing Address16935 UNION CAVERN, SAN ANTONIO, TX 78247-6215
OccupancyOwner Occupied
Owner TypeIndividual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleAug 16, 2016 · Amount on File
Deed SaleAug 16, 2016 · Amount on File
Prior SaleDec 15, 2011 · Amount on File
Deed Document Number2016159503
Deed Book / Page18030 / 1830
Prior Transfer DateAug 1, 2016
Prior Transfer Doc0000159503
Record UpdatedOct 29, 2026

September 2022: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionBEXAR TX
Property Address16935 UNION CAVERN, SAN ANTONIO, TX 78247-6215
Transaction TypeMortgage
Record UpdatedOct 5, 2022

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0000227796
DateSep 20, 2022
Instrument20220227796
Lender
NameNATIONSTAR MORTGAGE LLC
TypeMortgage Company
AddressCOPPELL, TX 75019
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term361 Months
DueOct 1, 2052

Tax Assessment & Valuation

The 2025 property tax bill for 16935 Union Cavern was $4,427 with a homeowner's exemption, down 8.6% from the year before.

Source: Bexar County assessment roll, as of May 26, 2026

Property Jurisdictions

TypeName
StateTexas
CountyBexar County
MunicipalitySan Antonio City
Unified School DistrictNorth East Independent School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$4,427.00 (-8.55%) Homeowner's exemption$284,390 Land $58,440 Building $225,950$284,390 Land $58,440 Building $225,950
2024$4,841.00
2023Homeowner's exemption$292,130 Land $53,140 Building $238,990$292,130 Land $53,140 Building $238,990
2022$5,037.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

FEMA maps place 16935 Union Cavern in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1987.

Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 6 (20% premium discount)
Nearby Flood Policies2 in force
Nearby Flood Claims1 (1987)
Most Recent ClaimJul 1987 · rainfall accumulation

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

Wildfire risk around 16935 Union Cavern is low, with a 0.01% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskLow
lower than 80% of the US · lower than 94% of Texas
Wildfire Likelihood0.01% annual chance
ExposureNone
beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemSAN ANTONIO WATER SYSTEM
serves 2,643,729 people · EPA ID TX0150018
Water SourcePurchased surface water from several systems
Last State InspectionAug 2023
Lead2 ppb (2022–2024)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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.

Internet Providers

Source: FCC Broadband Data Collection, based on 650 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Google Fiber
Fiber		8,000 / 8,000
Spectrum
Cable		1,000 / 1,000
Verizon
Fixed Wireless		300 / 20
AT&T
Fixed Wireless · DSL · Fiber in parts of the area		100 / 20
T-Mobile
Fixed Wireless		100 / 20

May also be available: Guadalupe Valley Electric Cooperative.

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