Arp, Texas
Inside Arp's city limits, shrink-swell clay limits houses without basements on under 1% of mapped land. A shallow water table limits basements on 17%.
That clay share is close to Smith County's 3%. FEMA's flood data list no flood losses since 2016 in ZIP code 75750 overlapping the city. Of its 429 homes, 63% were built before 1980; the median dates from 1970.
Data as of October 13, 2026 · sources · in Smith 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 Arp
Foundation repair in Arp: shrink-swell clay limits slab homes on under 1% of Arp's mapped land.
About 300 of Arp's 429 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 Arp city limits
| Expansive clay (limits slab homes) | 0.5% |
| High water table (limits basements) | 16.9% |
| Septic fields very limited | 78.9% |
| Clay swell (LEP, by area) | 2.2% |
| High-swell land (LEP 6%+) | 0.5% |
| Mapped soil | 1,689 acres |
What the numbers mean here
On 17% of Arp's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 79% of the land very limited for septic absorption fields.
Drought in Smith County
100% of Smith 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 Arp. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 75750 | 100% | 0 | $0 |
Homes in Arp
| Housing units | 429 |
| Median year built | 1970 |
| Built before 1980 | 63% |
| Built 2000 or later | 24% |
| Owner-occupied | 81% |
| Median value, owner-occupied | $106,100 |
| Single-family detached | 78% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Overton | 6 mi | under 1% | 9% |
| Troup | 7 mi | 2% | 56% |
| New London | 8 mi | 4% | 7% |
| New Chapel Hill | 8 mi | 0% | 20% |
| Whitehouse | 10 mi | 5% | 24% |
| Henderson | 16 mi | 9% | 25% |
| Tyler | 16 mi | 1% | 10% |
| Kilgore | 16 mi | 3% | 37% |
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