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Owner Contacts

$332,140

NAL Estimated Property Value

12121 Old Onyx, San Antonio, TX, 78245

Off Market

3 Beds

2 Bath

2,175 Sq Ft

Single Family Residence

$144.83 / sqft

Built in 2021

Property Lead Type:

Off-Market ListAbsentee Owner

Highlights

Interior

Bedrooms 3

Bathrooms Full 2

Garage Available

Heating Forced Air Unit

Cooling

AppliancesCooktop, Dishwasher, Oven, Range

FlooringWood, Laminate

Exterior

Lot Size5,625 sqft

Building Information

Year Built2021

Stories2

Roof Type109

Garage Spaces2

Land Information

APN04351-109-0050

Lot Number5

SubdivisionGrosenbacher Ranch

Land UseResidential

Legal DescriptionCB 4351A ( GROSENBACHER RANCH UT 4), BLOCK 9 LOT 5 2022-NEW PER PLAT 20002/272-274, FILED 01-15-2021

Census Tract172002

Assessed Land Value$52,030

Assessed Improvement Value$280,110

Assessment Year2025

About this property

NO CITY TAXES!! HOME LOCATION QUALIFIES FOR USDA NO DOWN PAYMENT FINANCING or ASK ABOUT LOW-INTEREST, ASSUMABLE VA LOAN FOR QUALIFIED BUYERS or 1% TEMPORARY RATE BUY-DOWN FOR FIRST YEAR IF USING OUR PREFERRED LENDER. Welcome to your stunning 3-bedroom, 2.5-bath home with 2,241 sq ft of modern living space, built in 2021 by D.R. Horton in the desirable Canyons at Amhurst. This two-story beauty features an open floor plan, high ceilings, and a spacious game room upstairs. The kitchen boasts gas cooking, a breakfast bar, and an eat-in area that flows into the generous family room. The primary suite includes a large walk-in closet, garden tub, and double vanity. Enjoy the outdoors with a covered patio, privacy fence, and sprinkler system. Located in the Northside ISD with easy access to major roads.

Investor Tools

$332,140

Estimated Property Value

$291,042Estimated Mortgage Balance

$41,098Estimated Equity

12% equity

Estimated Cap Rate

View Rate

Estimated ARV (After-Repair Value)

Calculate ARV

Rent-to-Value Ratio: 0.72%

Rent Estimate

$1,993 /month

Positive

Cash Flow Estimate:

$664 /month

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Financing Details

Estimated Taxes & Insurance

HOA Fees

Interest Rate Assumption

$521/month

$200/month

5.947%

Tax Information

Annual Taxes

Assessed Value

Assessment Year

Assessed Land

Assessed Improvement

Market Value

Tax Delinquent

$4,587

$332,140

2025

$52,030

$280,110

$332,140

Tax History

Year

Tax Paid

Assessed Value

2024

$4,587

$332,140

Mortgage Details

Lender

Loan Type

Loan Amount

Assumable

Position

Origination Date

Maturity Date

Dhi Mortgage Company Ltd

Unknown

$293,601

First

Nov 13, 2025

N/A

Equity Summary

Est. Mortgage Balance

Est. Equity

Equity %

LTV

Est. Monthly Payment

$291,042

$41,098

12%

88%

$1,761/mo

Rental Potential

Est. Monthly Rent

Est. Monthly Expenses

Est. Cash Flow

Gross Yield

$1,790/mo

$1,961/mo

$-171/mo

6.5%

Learn About the Market: Opportunity in San Antonio

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San Antonio

San Antonio balances deep Texas history with steady modern growth. Home to the Alamo and the River Walk, the city carries cultural gravity — but its economic foundation is anchored in military installations, healthcare networks, cybersecurity, and tourism.

Compared to many peer metros, San Antonio maintains a lower cost of living and more affordable housing, attracting both military families and long-term residents seeking stability. It’s a market defined less by flash and more by durability — steady expansion with strong community roots.

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