18010 Keystone Bluff, San Antonio, TX 78258 Property Records

Bexar County property record for 18010 Keystone Bluff, San Antonio, TX 78258

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.5 ba · 3,570 sqft · built 2000
Lot Size	0.242 acres (10,538 sqft)
Owner	2 Individual Names on File
Last Sale	$258,900 (Aug 2001)
Tax Bill	$7,297 (2025)
Deeds & Mortgages	Aug 2026 Line of Credit Mar 2023 Line of Credit + 3 more
Flood Zone	Zone X (minimal risk)
APN	`17617-007-0030`

Property Details

APN / Parcel Number

Primary APN	`17617-007-0030`
Alternative APN	`662920`

Interior

Bedrooms	4 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	3,570 sqft Living Area
Gross Area	3,970 sqft
1st Floor Area	1,625 sqft
2nd Floor Area	1,945 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2000
Effective Year Built	Effective 2000
Architectural Style	Contemporary
Exterior Material	Combination
Foundation Type	Slab (Mat/Raft)
Roof Material	Asphalt
Lot Area	10,538 sqft (0.242 acres)
Garage Type	Attached
Garage Area	400 sqft
Parking Spaces	2 Parking Spaces

Exterior Amenities

Porch	Open Porch
Porch Area	30 sqft
Deck Area	240 sqft
Patio Area	240 sqft

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Street Address	18010 KEYSTONE BLF
City	SAN ANTONIO
State	TX
Zip	78258-3436
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	NCB 17617 BLK 7 LOT 3 THE GLEN AT STONE OAK UT-1
Legal Subdivision	GLEN STONE OAK BL 17617 UN 1
Legal Block	7
Legal Lot Number	3
Jurisdiction	BEXAR TX
Township / Civil Division	SAN ANTONIO NORTH
Census Block Group	3
Census Block	3008
Census Tract	191819

Owner

18010 Keystone Bluff is owned and occupied by two individuals who bought it in August 2001.

Source: Bexar County records, as of August 31, 2026

Owner of Record	2 Individual Names on File
Mailing Address	18010 KEYSTONE BLF, SAN ANTONIO, TX 78258-3436
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.

Deeds, Mortgages & Sale History

Date	Document
Aug 20, 2026	Deed of Trust, Mortgage · Line of Credit UNION FEDERAL CREDIT UNION
Mar 7, 2023	Deed of Trust, Mortgage · Line of Credit RANDOLPH BROOKS FCU
Apr 24, 2019	Deed of Trust, Mortgage · Conventional Mortgage RANDOLPH BROOKS FCU
May 10, 2019	Deed of Trust, Mortgage · Stand-Alone Second Mortgage RANDOLPH BROOKS FCU
Apr 4, 2017	Deed of Trust, Mortgage · Line of Credit RANDOLPH BROOKS FCU

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 24, 2001 · Amount on File
Deed Sale	Aug 24, 2001 · Amount on File
Deed Book / Page	9028 / 1321
Prior Transfer Date	Aug 15, 2001
Prior Transfer Doc	9028001321
Record Updated	Oct 29, 2026

August 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BEXAR TX
Recording Date	Aug 20, 2026
Property Address	18010 KEYSTONE BLF, SAN ANTONIO, TX 78258-3436
Document Number	0000162854
Instrument Date	Aug 15, 2026
Instrument	2026162854
Transaction Type	Mortgage
Record Updated	Sep 9, 2026
Title Company	NONE LISTED ON DOCUMENT

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	18010 KEYSTONE BLF, SAN ANTONIO, TX 78258-3436

Mortgage

Document Number	0000162854,
Date	Aug 20, 2026
Instrument	2026162854

Lender

Name	UNION FEDERAL CREDIT UNION

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	180 Months
Due	Sep 1, 2041

Interest

Max Rate	-1%

March 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BEXAR TX
Property Address	18010 KEYSTONE BLF, SAN ANTONIO, TX 78258-3436
Transaction Type	Mortgage
Record Updated	Mar 20, 2023

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000038674
Date	Mar 7, 2023
Instrument	20230038674

Lender

Name	RANDOLPH BROOKS FCU
Type	Credit Union
Address	UNIVERSAL CITY, TX 78148

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	180 Months
Due	Mar 1, 2038

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

April 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BEXAR TX
Property Address	18010 KEYSTONE BLF, SAN ANTONIO, TX 78258-3436
Transaction Type	Mortgage
Record Updated	Feb 7, 2021
Title Company	PRESERVE TITLE CO LLC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000074355
Date	Apr 24, 2019
Instrument	20190074355

Lender

Name	RANDOLPH BROOKS FCU
Type	Credit Union
Address	UNIVERSAL CITY, TX 78148

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	181 Months
Due	May 1, 2034

May 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BEXAR TX
Property Address	18010 KEYSTONE BLF, SAN ANTONIO, TX 78258-3436
Transaction Type	Mortgage
Record Updated	Feb 7, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000087216
Date	May 10, 2019
Instrument	20190087216

Lender

Name	RANDOLPH BROOKS FCU
Type	Credit Union
Address	UNIVERSAL CITY, TX 78148

Agreement

Type	Stand-Alone Second Mortgage
Amount	Amount on Record
Term	181 Months
Due	Jun 1, 2034

April 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	BEXAR TX
Property Address	18010 KEYSTONE BLF, SAN ANTONIO, TX 78258-3436
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000062748
Date	Apr 4, 2017
Book Page	18439/2366
Instrument	20170062748

Lender

Name	RANDOLPH BROOKS FCU
Type	Credit Union
Address	UNIVERSAL CITY, TX 78148

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	180 Months
Due	Apr 1, 2032

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

Tax Assessment & Valuation

The 2025 property tax bill for 18010 Keystone Bluff was $7,297 with exemptions applied, down 9.8% from the year before.

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

Property Jurisdictions

Type	Name
State	Texas
County	Bexar County
Municipality	San Antonio City
Unified School District	North East Independent School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$7,297.00 (-9.81%) Homeowner's exemption Disabled Person's exemption Senior Citizen's exemption Veteran's exemption	$560,955 Land $96,420 Building $464,660	$561,080 Land $96,420 Building $464,660
2024	$8,091.00 (-5.25%)
2023	$8,539.00 (-8.01%) Homeowner's exemption Disabled Person's exemption Veteran's exemption	$529,640 Land $96,420 Building $433,220	$529,640 Land $96,420 Building $433,220
2022	$9,283.00

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

Flood

FEMA maps place 18010 Keystone Bluff in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective October 12, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Wildfire risk around 18010 Keystone Bluff 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.

Drinking Water

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

Violations Reported to EPA

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.

Internet Providers

Source: FCC Broadband Data Collection, based on 140 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Google Fiber Fiber	1,000 / 1,000
Spectrum Cable	1,000 / 35
Verizon Fixed Wireless	300 / 20

May also be available: AT&T.

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