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East band · Lewisville, Texas

Foundation Repair in Lewisville, TX

River-valley ground that reads like the clay bands, homes from every decade since the 1970s, and the lake office in town.

Lewisville doesn't sit neatly on any of Denton County's three bands. Most of our land sample points there, 12 of 20, fell on river deposits instead. You might expect river ground to be sandy and forgiving, but the soil survey says otherwise: 16 of those 20 land points came up high or very high for shrink and swell.

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So if your Lewisville house has a new crack or a door that drags, the ground is a fair suspect. Below, foundation repair in Lewisville piece by piece: the valley's soils, the town's homes, the city's rules and the lake, each with what it means for you.

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The Ground Under Lewisville

On the state geologic map, 28% of our 25 points landed on river alluvium and 20% on terrace deposits. Another 28% fell on the Eagle Ford shale of the east band, 4% on the Woodbine and 20% on open water.

The USDA soil survey shows a mix, with no single soil in charge. Of the 20 land points, 16 read high or very high (80%), and 5 of those very high (25%). The soils that turned up most:

  • Crockett fine sandy loam, 3 points. About 6 inches of sandy loam over a layer that's close to half clay and reads 7.5, high, on the USDA scale. A yard on Crockett can look sandy while the clay sits just below.
  • Frio silty clay, 2 points. A river-bottom soil whose map unit is named "occasionally flooded." It reads 8.3 in its top 22 inches.
  • Ovan clay, 2 points. Also a flooded-bottom soil. It's close to half clay and reads 7.5 from the surface down to 5 feet or more.
  • Ferris clay, 2 points. The east band's shale clay, reading 17 down to dense bedrock about 43 inches below the surface.

Single points of Trinity, Branyon and Heiden clay read very high too. Of the other four land points, two are Justin sandy loam and one Aquilla loamy sand, which read lower. The last is a gravel pit, with no reading.

What does it mean for your house? Treat Lewisville's ground like the clay bands around it, not like sand. The USDA says a soil rated moderate or higher can damage buildings as it shrinks and swells, and most of Lewisville's read well above moderate. Because the soils change from one point to the next, your own lot is worth looking up. The steps are in our soil and rock guide.

Soil under Lewisville, by share of the town Share of Lewisville covered by each mapped soil series, from a 25-point sample of the USDA soil survey (land points only). Crockett, reads 7.5 below the surface: 15% of the town, peak linear extensibility 7.5 (high); Ferris, reads 17: 10% of the town, peak linear extensibility 17 (very high); Frio, reads 8.3: 10% of the town, peak linear extensibility 8.3 (high); Ovan, reads 7.5: 10% of the town, peak linear extensibility 7.5 (high); Justin, reads 4.5 below the surface: 10% of the town, peak linear extensibility 4.5 (moderate); Branyon, reads 13: 5% of the town, peak linear extensibility 13 (very high); Trinity, reads 13: 5% of the town, peak linear extensibility 13 (very high); Heiden, reads 12.2: 5% of the town, peak linear extensibility 12.2 (very high); Burleson, reads 8: 5% of the town, peak linear extensibility 8 (high); Navo, reads 7.5: 5% of the town, peak linear extensibility 7.5 (high); Wilson, reads 7.5: 5% of the town, peak linear extensibility 7.5 (high); Altoga, reads 7.1: 5% of the town, peak linear extensibility 7.1 (high); Aquilla, reads 1.5: 5% of the town, peak linear extensibility 1.5 (low); Pits (not rated): 5% of the town. The soil under Lewisville 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 Crockett, reads 7.5 below the surface 15% Ferris, reads 17 10% Frio, reads 8.3 10% Ovan, reads 7.5 10% Justin, reads 4.5 below the surface 10% Branyon, reads 13 5% Trinity, reads 13 5% Heiden, reads 12.2 5% Burleson, reads 8 5% Navo, reads 7.5 5% Wilson, reads 7.5 5% Altoga, reads 7.1 5% Aquilla, reads 1.5 5% Pits (not rated) 5% Source: USDA NRCS soil survey (SSURGO), 20 land points of a 25-point sample across Lewisville (5 on open water left out), retrieved 2026-10-17.

Lewisville Homes by Decade

Lewisville has 52,909 homes, the third most of the 33 towns we studied, and the median one was built in 1996, the Census says. Building has been steady for decades: 8.8% of homes date from the 1970s, 20.2% from the 1980s, 24.9% from the 1990s, 19.2% from the 2000s and 18.9% from the 2010s. Another 2.4% have gone up since 2020, and 2.7% are older than 1960.

That spread means Lewisville's homes range widely in age. HUD's rehab inspection guide says to read a crack against the age of the building. A half-inch crack in a new house may mean fast settling, but in a 50-year-old house it may mean very slow movement. The Post-Tensioning Institute dates its design method for house slabs on expansive soil to 1980, so homes on either side of that year may have been built quite differently.

  • 1996Median year Lewisville homes were built
  • 2.7%Built before 1960
  • 65.4%Built in 1990 or later

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

Permits and Rules in Lewisville

Lewisville lists foundation repair among its building permit types, and applications and payments go through its MGO Connect system. The city's 2024 fee schedule listed $50 for a residential foundation repair permit. We couldn't confirm from the city's pages whether it asks for an engineer's letter, so ask Building Services before work starts.

No state license exists for foundation repair companies in Texas; a bill to create one stalled in 2013. The permit, and an engineer's plan where the city wants one, are the checks built into the job.

Watering Rules in Lewisville

Lewisville buys its water from Dallas Water Utilities and follows conservation rules in line with Dallas's:

  • Two outdoor watering days a week, on assigned days, for lawns and landscaping.
  • May 1 to September 30: no automatic irrigation or hose-end sprinklers between 10 a.m. and 6 p.m.
  • Foundations in Stage 1: hand-watering and soaker hoses are allowed at any time, and the city says this includes foundations.
  • Stages 2 and 3: hand-watering and soaker hoses become restricted.

The stage can change with a dry month, so a look at the city's notice first is worth it. On soil that reads 7.5 to 17, even moisture is part of looking after the foundation. The Texas engineers' guidelines favor moisture that stays near even on all sides of a house, and they caution against overwatering. NOAA's Lewisville Dam station averages 36.48 inches of rain a year, with its driest month in August at 2.00 inches. Our watering guide covers how to go about it.

Lake and Flood Notes for Lewisville

The city shares its name with Lewisville Lake, and the Corps of Engineers runs the lake from its Lewisville Lake Project Office at 1801 North Mill Street. The lake was made when the Corps dammed the Elm Fork of the Trinity River, finishing in 1955. Its normal level is 522 feet.

Around the lake, the Corps holds a flowage easement on private land below the 537-foot contour, the right to flood it. Homes aren't allowed on easement land, and other structures need the District Engineer's approval. A deed can leave the easement out and it still applies. If your lot backs onto the lake, check your deed and ask the lake office.

FEMA's flood map reaches well into town too. Of our 20 land points, 7 fell in the 1%-annual-chance floodplain, the highest share of any launch town on this site. Our points are more than a mile apart and take in creek valleys and shoreline, so look up your own address on FEMA's Flood Map Service Center.

Foundation Repair Services in Lewisville

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Lewisville Foundation Repair Questions

Isn't river ground sandy?

Not in most of our Lewisville sample. The river-bottom soils there, such as Frio and Ovan, are clays that read high. Even Crockett, which starts out sandy, has a clay layer about 6 inches down.

Is a city permit part of a Lewisville repair?

Foundation repair is on the city's list of building permits, and its 2024 fee schedule listed $50. Ask Building Services whether your repair also needs an engineer's letter.

What if Lewisville moves to a later drought stage?

Then foundation watering gets tighter. In Stage 1 the city allows hand-watering and soaker hoses at any time, foundations included. In Stages 2 and 3, both are restricted, so check what the current stage allows.

See every common question

Nearby Towns in the Same Band

Lewisville sits between bands, so its neighbors differ. The Colony, about 5 miles east, is on the east band at 94.7% of land points high or very high. Highland Village, about 6 miles west, is on the middle band at 16.7%. Flower Mound, about 8 miles away, came in at 13.6%. See all service areas.

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High-reading clay in a river valley is easy to underestimate. Tell us what you've noticed. A foundation repair company that works in Lewisville can measure 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