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Coppell, Texas
Inside Coppell's city limits, shrink-swell clay limits houses without basements on 58% of mapped land, higher than 64% of Texas cities. A shallow water table limits basements on 11%, the 3rd-highest of 24 cities in Dallas County.
That clay share is above Dallas County's 51%. FEMA's flood data list 5 flood losses since 2016 in ZIP code 75019 overlapping the city. Of its 16,028 homes, 7% were built before 1980; the median dates from 1994.
Data as of October 13, 2026 · sources · in Dallas 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 Coppell
Foundation repair in Coppell: shrink-swell clay limits slab homes on 58% of Coppell's mapped land, more than in 64% of Texas cities.
The city requires a permit for the work.
About 11,400 of Coppell's 16,028 homes are detached houses.
| City permit | Required. Coppell says a building permit is required for residential foundation repair. (City of Coppell, Building Inspections, read October 2, 2026) |
| Engineer | Coppell has the repair engineer submit a final report confirming the work was done as specified, in place of a site inspection for piers or mud-jacking. (City of Coppell, Building Inspections) |
| Contractor registration | Coppell says all contractors must be registered with the city and licensed as the state requires. (City of Coppell, Building Inspections) |
| Prices | Cost guide ranges compared |
Soil under Coppell city limits
| Expansive clay (limits slab homes) | 57.9% |
| High water table (limits basements) | 10.9% |
| Septic fields very limited | 83.5% |
| Clay swell (LEP, by area) | 7.6% |
| High-swell land (LEP 6%+) | 55.1% |
| Urban land, not rated | 1.7% |
| Mapped soil | 9,443 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Frio | 13% | n/a |
| Wilson | 11% | 88% |
| Burleson | 9% | 84% |
| Silawa | 9% | n/a |
| Houston Black | 8% | 91% |
| Trinity | 6% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 7.6% by land area here, and 55% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 58% of the mapped land.
Clay shrinks as it dries: 100% of Dallas County is in drought on the latest map, and 58% of Coppell's mapped land has shrink-swell clay.
USDA rates 84% of the land very limited for septic absorption fields.
Drought in Dallas County
100% of Dallas 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 Coppell. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 75019 | 95% | 5 | $317,579 |
Homes in Coppell
| Housing units | 16,028 |
| Median year built | 1994 |
| Built before 1980 | 7% |
| Built 2000 or later | 27% |
| Owner-occupied | 69% |
| Median value, owner-occupied | $560,500 |
| Single-family detached | 71% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Grapevine | 5 mi | 41% | 7% |
| Carrollton | 6 mi | 65% | 8% |
| Lewisville | 6 mi | 49% | 4% |
| Farmers Branch | 7 mi | 45% | 3% |
| Irving | 7 mi | 65% | 10% |
| Hebron | 8 mi | 66% | 0% |
| Flower Mound | 9 mi | 29% | 1% |
| Addison | 9 mi | 28% | under 1% |
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