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West band · Sanger, Texas

Foundation Repair in Sanger, TX

West-band clay with a few rocky spots, and some of the older homes in our study: what both mean for your foundation.

Sanger has one of the larger shares of older homes among the 33 towns we studied around Denton: 6.3% were built before 1960, the Census says. It also sits on some of the most active clay in the county, with 21 of our 25 points rated high or very high for shrink and swell. If you've found a crack in a Sanger house, both facts are worth weighing.

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Here's foundation repair in Sanger, from the rock and soil to the homes, with what each means for your house.

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The Ground Under Sanger

Sanger sits on the west band of Denton County, the Grand Prairie. On the state geologic map, 52% of our 25 points landed on the unit that holds the Pawpaw Formation, the Weno Limestone and the Denton Clay, and 32% on the Fort Worth Limestone and Duck Creek Formation. The rest fell on river alluvium and terrace deposits.

The USDA soil survey found more variety in Sanger than in most towns: 13 different soils across 25 points. Of those points, 21 read high or very high (84%), and 7 very high (28%). The soils that turned up most:

  • Ponder loam, 6 points. It formed from the shale of the Grayson Marl. It reads 4.5 on the USDA scale in its top 6 or 7 inches, then 7.5 down to 70 inches or more.
  • Sanger clay, 5 points. It reads 8.4 at the surface and 9.1 from about 7 inches down to about 3 feet, with no rock in the 80 inches the survey covers.
  • Frio clay loam, 3 points. A creek-bottom soil whose map unit is named "frequently flooded." It reads 6.6 in its top 18 inches.
  • Medlin-Sanger clay, 2 points. Half clay, reading 7.5 to 8.2.

Single points of Slidell and Branyon clay read very high too, at 10 and 13.

Sanger also has a few spots where rock comes close. One point each of Aledo, Somervell and Mingo sat on limestone bedrock about 12, 27 and 29 inches down. A house on one of those spots may need a very different repair from one on deep Sanger clay nearby.

On the USDA's scale, 9 or more is very high, and the USDA says a soil rated moderate or higher can damage buildings as it shrinks and swells. For most of Sanger, the question isn't whether the ground moves but how much. The free USDA lookup in our soil and rock guide can tell you which of these soils is under your house.

Soil under Sanger, by share of the town Share of Sanger covered by each mapped soil series, from a 25-point sample of the USDA soil survey. Ponder, reads 7.5 below the surface: 24% of the town, peak linear extensibility 7.5 (high); Sanger, reads 9.1: 20% of the town, peak linear extensibility 9.1 (very high); Frio, reads 6.6: 12% of the town, peak linear extensibility 6.6 (high); Medlin, reads 8.2: 8% of the town, peak linear extensibility 8.2 (high); Branyon, reads 13: 4% of the town, peak linear extensibility 13 (very high); Slidell, reads 10: 4% of the town, peak linear extensibility 10 (very high); Burleson, reads 8: 4% of the town, peak linear extensibility 8 (high); Mingo, reads 7.5: 4% of the town, peak linear extensibility 7.5 (high); Navo, reads 7.5 below the surface: 4% of the town, peak linear extensibility 7.5 (high); Bolar, reads 3: 4% of the town, peak linear extensibility 3 (moderate); Aledo, reads 2.8: 4% of the town, peak linear extensibility 2.8 (low); Energy, reads 1.5: 4% of the town, peak linear extensibility 1.5 (low); Somervell, reads 1.5: 4% of the town, peak linear extensibility 1.5 (low). The soil under Sanger Bar length is how much of the town each soil covers. Color is how much that soil shrinks and swells as it wets and dries. Low, under 3 Moderate, 3 to 6 High, 6 to 9 Very high, 9 or more Ponder, reads 7.5 below the surface 24% Sanger, reads 9.1 20% Frio, reads 6.6 12% Medlin, reads 8.2 8% Branyon, reads 13 4% Slidell, reads 10 4% Burleson, reads 8 4% Mingo, reads 7.5 4% Navo, reads 7.5 below the surface 4% Bolar, reads 3 4% Aledo, reads 2.8 4% Energy, reads 1.5 4% Somervell, reads 1.5 4% Source: USDA NRCS soil survey (SSURGO), 25-point sample across Sanger, retrieved 2026-10-17.

Sanger Homes by Decade

Sanger has 3,793 homes, and the median one was built in 2003, the Census says. The 2010s brought 30.1% of them and the 2000s 21.8%, with 4.0% since 2020. The 1980s added 17.8%, the 1990s 9.4% and the 1970s 8.3%.

At the older end, 6.3% of Sanger's homes date from before 1960, including 3.1% from before 1940. Of the 33 towns we studied, only Pilot Point, Denton and Justin have a larger pre-1960 share, and Shady Shores ties it.

Across Texas, raised floors on piers turn up more often in older houses than in newer ones. That's an industry pattern, not a rule, and the Census counts build years, not foundation types. But if your Sanger house is one of the older ones, it's worth checking whether it stands on piers over a crawl space. On clay that reads 8.4 at the surface, short piers near the top of the soil can move with it. Our pier and beam page explains what to look for.

  • 2003Median year Sanger homes were built
  • 6.3%Built before 1960
  • 65.3%Built in 1990 or later

Source: US Census Bureau, American Community Survey 5-year estimates, 2023.

Permits and Water Rules in Sanger

We couldn't find Sanger's foundation repair permit rule or its watering rules published online. Before work starts, ask the City of Sanger whether a repair needs a permit and an engineer's plan. Nearby Denton requires a permit for every foundation repair, with a plan sealed by a Texas registered engineer, and that's a fair standard to ask about.

For watering, the Texas engineers' guidelines favor soil moisture that stays near even on all sides of a house, and they caution against overwatering. Since Sanger's own rules aren't online, a call to the city before you lay out a soaker hose is the safe move.

Lake and Flood Notes for Sanger

FEMA's flood map reaches into the area. Of our 25 land points, 7 fell in the 1%-annual-chance floodplain. Our points are more than a mile apart and take in creek valleys, so that tells you nothing about any one street. Look up your own address on FEMA's Flood Map Service Center.

Foundation Repair Services in Sanger

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Sanger Foundation Repair Questions

Is Sanger clay named after the town?

The soil survey doesn't say, and we haven't found a source that does. What we can say is that Sanger clay is the most common soil in nearby Krum and the second most common in our Sanger sample.

What should the owner of a pre-1960 Sanger house check first?

Whether it's on a slab or piers. A raised floor over a crawl space has its own repairs, such as reshimming or replacing piers. A measured floor survey shows where it has moved.

Is there rock under Sanger?

At most of our points, no. Three points sat on limestone between about 12 and 29 inches down. Everywhere else we sampled, the survey's 80 inches end without reaching rock.

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Nearby Towns in the Same Band

Close by on the west band: Krum (96% of land points high or very high), about 9 miles away. Denton, about 11 miles away, sits on the edge of the west and middle bands. To the east, Aubrey and Pilot Point, on the middle band, came in at 16% and 28.6%. See all service areas.

Get a Free Foundation Inspection in Sanger

Active clay and an older house both make a measured look worthwhile. Tell us what you've noticed. A foundation repair company that works in Sanger can check the floors and explain the readings, at no cost and with nothing to sign.

Get a Free InspectionCall (940) 535-7201

What have you seen?

Free, and you're not committing to anything. Privacy policy

Rather talk? Call (940) 535-7201