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Colleyville, Texas
Inside Colleyville's city limits, shrink-swell clay limits houses without basements on 27% of mapped land. A shallow water table limits basements on 14%, the 5th-highest of 35 cities in Tarrant County.
That clay share is below Tarrant County's 41%. FEMA's flood data list 7 flood losses since 2016 in ZIP code 76034 overlapping the city. Of its 9,403 homes, 16% were built before 1980; the median dates from 1994.
Data as of October 13, 2026 · sources · in Tarrant 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 Colleyville
Foundation repair in Colleyville: shrink-swell clay limits slab homes on 27% of Colleyville's mapped land.
About 8,900 of Colleyville's 9,403 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 Colleyville city limits
| Expansive clay (limits slab homes) | 27.5% |
| High water table (limits basements) | 13.9% |
| Septic fields very limited | 48.4% |
| Clay swell (LEP, by area) | 4.3% |
| High-swell land (LEP 6%+) | 28.8% |
| Urban land, not rated | 7.4% |
| Mapped soil | 8,463 acres |
What the numbers mean here
Clay swell averages a linear extensibility of 4.3% by land area here, and 29% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 27% of the mapped land.
Clay shrinks as it dries: 100% of Tarrant County is in drought on the latest map, and 27% of Colleyville's mapped land has shrink-swell clay.
Drought in Tarrant County
100% of Tarrant 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 Colleyville. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 76034 | 99% | 7 | $282,496 |
Homes in Colleyville
| Housing units | 9,403 |
| Median year built | 1994 |
| Built before 1980 | 16% |
| Built 2000 or later | 34% |
| Owner-occupied | 97% |
| Median value, owner-occupied | $784,900 |
| Single-family detached | 94% |
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