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Seabrook, Texas
Inside Seabrook's city limits, shrink-swell clay limits houses without basements on 13% of mapped land. A shallow water table limits basements on 15%.
That clay share is below Harris County's 25%. FEMA's flood data list 523 flood losses since 2016 in ZIP code 77586 overlapping the city. Of its 6,436 homes, 29% were built before 1980; the median dates from 1992.
Data as of October 13, 2026 · sources · in Harris 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 Seabrook
Foundation repair in Seabrook: shrink-swell clay limits slab homes on 13% of Seabrook's mapped land.
About 3,700 of Seabrook's 6,436 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 Seabrook city limits
| Expansive clay (limits slab homes) | 13.1% |
| High water table (limits basements) | 14.6% |
| Septic fields very limited | 19.8% |
| Clay swell (LEP, by area) | 7.5% |
| High-swell land (LEP 6%+) | 13.1% |
| Urban land, not rated | 3.6% |
| Mapped soil | 13,318 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Verland | 7% | n/a |
| Texla | 3% | n/a |
| Aris | 3% | n/a |
| Edna | 2% | n/a |
| Atasco | 1% | n/a |
| Ijam | 1% | n/a |
What the numbers mean here
With shrink-swell clay on 13% and a shallow water table on 15% of the land, the soil survey points to neither problem across most of Seabrook; conditions still vary lot by lot.
Drought in Harris County
82.9% of Harris 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 Seabrook. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 77586 | 100% | 523 | $20.8 million |
Homes in Seabrook
| Housing units | 6,436 |
| Median year built | 1992 |
| Built before 1980 | 29% |
| Built 2000 or later | 37% |
| Owner-occupied | 66% |
| Median value, owner-occupied | $350,000 |
| Single-family detached | 58% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Shoreacres | 2 mi | 68% | 39% |
| El Lago | 3 mi | 47% | 41% |
| Taylor Lake Village | 4 mi | 41% | 41% |
| Clear Lake Shores | 4 mi | 16% | 57% |
| Kemah | 5 mi | 20% | 93% |
| Morgan's Point | 5 mi | 36% | 23% |
| La Porte | 6 mi | 74% | 39% |
| Nassau Bay | 7 mi | 31% | 30% |
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