This 19.58-acre Hill Country property offers a rare combination five minutes from downtown Boerne in Kendall County. With multiple wells and septics, water infrastructure throughout, new fencing, and a seasonal stretch of Menger Creek along the entire back boundary, the land is set up for immediate use. A newly built 1,100-square-foot modern casita with a fully climate-controlled garage anchors the property, providing comfortable living quarters while you design and build your main estate. Multiple accessory buildings, a cattle pen, and a working shoot support livestock operations under the current ag exemption. The property balances working ranch utility with hunting recreation and custom home development, all within minutes of Boerne's historic downtown. The tract sits on the rolling limestone terrain typical of the Edwards Plateau, with live oaks, native grasses, and a spring-fed creek system that attracts whitetail deer, axis deer, turkey, and dove. Water infrastructure is already in place, new perimeter fencing secures the boundaries, and the accessory buildings give you flexible space for equipment, livestock, or storage. The climate-controlled garage protects vehicles and tools year-round, and the modern casita offers immediate occupancy or guest quarters while you plan your main residence.
20.78 ac Ag Exempt tract with water well on West side of Boerne only 2.5 miles to town. Property offers a private pastoral setting supporting TX hill country views with seasonal Menger Creek traversing the east portion. Large Oaks, Cedar Elms and tall mixed hardwoods provide shade and cover for wildlife and livestock. This tract of land would make a great residential family compound or private estate and lies within the Boerne ISD. Private, no city taxes, Ag exempt, usable non restricted land within minutes of medical and grocery and less than 25 miles to downtown San Antonio is hard to come by this close to town.
LERA #1466699
Jan 1, 2021
Listing Removed
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Jun 29, 2020
Listed
$599,000
$539/sq ft
LERA #1466235
Dec 27, 2020
Listing Removed
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Jun 26, 2020
Listed
$599,000
$539/sq ft
LERA #1390266
Jun 17, 2020
Listing Removed
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Jun 4, 2020
Listing Removed
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Oct 25, 2019
Contingent
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Jun 11, 2019
Listed
$665,000
$599/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$9,468 (+198.5%)
$462,860 + $216,860
$679,720
2025
$3,172 (+449.1%)
2024
$578
Public record
Beds
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Baths
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Stories
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Lot width
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Lot depth
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Lot size
20.78 Acres
Year renovated
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Finished Sq. Ft.
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Unfinished Sq. Ft.
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Total Sq. Ft.
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Year built
1999
Style
Ranch
County
Kendall County
APN
000000013043
Parking Spaces
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Basement
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Accessible
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HOA Dues
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Garage
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Features
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Last updated by owner on Sep 18, 2026.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
4/10 Fire Factor
2% chance of being in a wildfire in next 30 years
7/10 Heat Factor
7 days above 103° expected this year, 22 days in 30 years
6/10 Wind Factor
62% chance of strong winds in next 30 years
1/10 Air Factor
0 unhealthy days expected this year, 0 days in 30 years
Provided by First Street
Historical weather
Boerne, TX • 78006
Average low and high temperatures (°F)
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47
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Sun exposure
In this area, properties receive around 9 hours in
June and 4.9 hours in December, which is comparable to the
U.S. average for solar exposure.
9 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 21 Thunder Valley Rd
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