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Gustine, Texas
Inside Gustine's city limits, shrink-swell clay limits houses without basements on 19% of mapped land, the 3rd-highest of 3 cities in Comanche County. A shallow water table limits basements on 5%, the 2nd-highest of 3 cities in Comanche County.
That clay share is below Comanche County's 30%. FEMA's flood data list no flood losses since 2016 in ZIP code 76455 overlapping the city. Of its 223 homes, 84% were built before 1980; the median dates from 1957.
Data as of October 13, 2026 · sources · in Comanche County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 1 overlapping ZIP
of homes built before 1980
Foundation repair in Gustine
Foundation repair in Gustine: shrink-swell clay limits slab homes on 19% of Gustine's mapped land.
About 200 of Gustine's 223 homes are detached houses.
| Who designs the repair | The ASCE Texas Section's repair guidelines say a Texas-licensed engineer should evaluate the foundation and design the repair (2022 guidelines) |
| Prices | Cost guide ranges compared |
Soil under Gustine city limits
| Expansive clay (limits slab homes) | 18.6% |
| High water table (limits basements) | 5.3% |
| Septic fields very limited | 69.0% |
| Clay swell (LEP, by area) | 4.9% |
| High-swell land (LEP 6%+) | 20.3% |
| Mapped soil | 585 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Purves | 20% | 40% |
| Pedernales | 18% | n/a |
| Menard | 18% | n/a |
| Bolar | 13% | n/a |
| Chaney | 8% | n/a |
| Demona | 5% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 4.9% by land area here, and 20% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 19% of the mapped land.
Clay shrinks as it dries: 100% of Comanche County is in drought on the latest map, and 19% of Gustine's mapped land has shrink-swell clay.
USDA rates 69% of the land very limited for septic absorption fields.
Drought in Comanche County
100% of Comanche County is in drought (D1 or worse) on the October 13, 2026 map. County detail.
Flood losses by ZIP code
FEMA flood records since 2016 in the ZIP codes that overlap Gustine. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 76455 | 100% | 0 | $0 |
Homes in Gustine
| Housing units | 223 |
| Median year built | 1957 |
| Built before 1980 | 84% |
| Built 2000 or later | 1% |
| Owner-occupied | 81% |
| Median value, owner-occupied | $86,900 |
| Single-family detached | 83% |
Nearby cities
Sources: USDA SSURGO (August 5, 2026) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · Census ACS 2020-2024. Methods · Data status