What are foundation conditions like in Mustang, Oklahoma?

Reviewed by Preston · Updated 2026-11-11

In short: Mustang ties Blanchard for the least high shrink-swell soil in the Oklahoma City area, about 1% ¹. Most of the city sits on moderately deep or shallow soils over Permian red-bed shale and sandstone, such as Kingfisher, Nash, Binger and Ironmound ¹. Moderate clay, shallow weathered rock and runoff on slopes are the conditions to plan around, not heavy clay swell.

How much of Mustang has expansive soil?

Mustang covers about 12 square miles ², mostly in the Canadian County soil survey ¹. No meaningful share of the city is poorly drained ¹.

Which Mustang soils matter most for houses?

• Kingfisher, about 26% of the city, is well drained, formed from Permian red-bed silty shale, with a subsoil of 27 to 42 percent clay and weathered siltstone, shale and sandstone 20 to 40 inches down ³.
• Nash is moderately deep and well drained, formed from Permian sandstone on ridges and side slopes ⁴.
• Binger is moderately deep and well drained, formed in weakly cemented Permian sandstone on gently to moderately sloping uplands ⁵.
• Ironmound is shallow and well drained, formed from sandstone or sandstone interbedded with siltstone or shale, on crests and side slopes of low hills ⁶.

What else should Mustang homeowners know?

The Oklahoma Geological Survey has described El Reno–Mustang as one of the state's main seismic areas ⁷. See induced seismicity in Oklahoma and earthquakes, claims and the law. On these soils, movement is more often linked to runoff and erosion, fill or leaks than to strong clay swell.

Which soils cover Mustang?

Looking for a foundation company near Mustang?

Companies that serve Mustang can appear on the company map in the Homeowner Hub. Paid listings there are marked Sponsored; the library and the AI guide don't rank or recommend any of them.

Buying or selling a house in Mustang? Realtors who serve the area can be on the same map, also marked Sponsored, and for realtors covers the seller disclosure form, inspections and the sale timeline. Seeing cracks at home? Start with for homeowners.

How were these numbers measured?

We overlaid the city's current limits from the Census Bureau ² on the USDA soil survey's map units ¹ and added up the area of each soil. Where a map unit is a mix of soils, its area was split by the percentages the survey lists for its major soils, so the shares above leave out minor inclusions and do not add to 100%. A soil counts as high, moderate or low shrink-swell by the linear extensibility of its most expansive layer, the survey's measure of how much a soil changes length between wet and dry (6% or more is rated high). Water table, bedrock and flooding come from the survey's map-unit summaries: the shallowest water table in any month, the shallowest bedrock, and the most common flooding frequency. Bedrock here includes soft, weathered sandstone and shale that a pier can push through, so it is not the depth where piers stop. These are mapped averages for the whole city, not a test of any one lot. Fill, grading and the soil actually under a house can differ, which is why a site visit or soil boring still decides a repair.

Related

• OKC metro soils
• Western Permian red beds
• Shrink-swell and the active zone
• Compare Oklahoma cities