Foundation Repair in Schertz and Cibolo, Texas

Where the ground changes in Schertz and Cibolo

Schertz is one of the few cities in Texas that sits in three counties: Guadalupe, Bexar and Comal. Cibolo is almost entirely in Guadalupe County with a sliver in Bexar, on the north bank of Cibolo Creek. Nearly all of both cities is on the Blackland Prairie, the same Houston Black and Heiden clay that runs from Seguin up to the east side of New Braunfels. It is black, sticky when wet, cracks into plates when dry, and moves a slab with every swing.

The exception is the north end. Up FM 3009 past Northcliffe toward Garden Ridge, and along the Comal County line, the clay thins over limestone and the ground gets more calcareous and stable. A house in Scenic Hills near I-35 and a house in Northcliffe three miles north can behave differently, and the one in Northcliffe is usually the calmer of the two.

Cibolo Creek itself cuts through both cities and brings its own soil. The terraces along the creek, through Schertz's older core near Main Street and FM 78, and down through Cibolo toward FM 1103, carry alluvial clay and gravel that can be loose and inconsistent. Older homes near the creek sometimes have settlement that has nothing to do with drought and everything to do with what was under the slab when it was poured.

Cibolo: from 3,000 people to 32,000 in twenty years

Cibolo had about 3,000 residents in 2000 and over 32,000 by 2020. Almost every one of those new homes is a production slab poured on former cotton and sorghum ground along FM 1103, FM 78 and the new arterials toward I-10. Steele Creek, Buffalo Crossing, Saddle Creek Ranch, Mesa at Turning Stone and the neighborhoods around Steele High School are the result.

Slabs poured on clay that was farmed for a century go through an adjustment period of roughly five to fifteen years. The soil under the middle of the house dries out slowly to a steady level because rain no longer reaches it. The perimeter keeps cycling with the weather. The edges drop relative to the center, and the first signs are stair-step cracks in the brick over the patio door, a back bedroom door that sticks from July to October, and hairline cracks at the top corners of windows on the side of the house facing the drainage easement.

The 2005 to 2012 phases in Cibolo are in the thick of that window now, and the 2015 to 2020 phases are entering it. Builder structural warranties in Texas commonly run ten years, so for a lot of Cibolo homes the clock is a factor. Get an elevation survey before the warranty ends, not after.

Schertz: Northcliffe, Scenic Hills, Crossvine and the older core

Schertz has a wider spread of housing ages than Cibolo. The core near Main Street and FM 78 dates to the railroad town of the early 1900s and has pier and beam houses and 1950s and 60s slabs. Scenic Hills, off I-35 between Schertz and Live Oak, is 1980s and 90s ranch-style brick on slabs that have been through thirty-plus drought cycles. Northcliffe, the golf course community at the north end along I-35 and FM 3009, is 1970s through 1990s, and benefits from the shallower soil up there. The Crossvine, off FM 1518 on the south side toward Randolph, is 2010s and 2020s master-planned construction on deep clay.

The thirty-year-old slabs in Scenic Hills and the FM 3009 corridor are the ones most likely to have been repaired before. Prior piers are not a problem if there is paperwork and a transferable warranty. Prior piers with no paperwork, and fresh paint on one side of the brick, deserve a careful elevation survey before purchase.

Randolph Air Force Base means Schertz and Cibolo have a steady flow of military families buying and selling on short timelines, often with VA financing. VA appraisers routinely call for an engineer's letter when they see foundation cracking, and that can stall a closing by weeks. Sellers who know their slab has moved are better off getting the engineer's report and, if needed, the repair done with a transferable warranty before listing.

Repairs that fit this ground

On the Blackland clay through most of Schertz and Cibolo, pressed concrete piers are the standard, typically refusing between ten and sixteen feet. Steel piers are specified on heavy two-story homes, which Crossvine and Steele Creek have plenty of, and where an engineer wants bearing below the full depth of seasonal moisture change. Pier counts of eight to fifteen for a partial perimeter repair are typical, with full-perimeter jobs on larger homes running higher.

Drainage work is a bigger part of the job here than in New Braunfels proper because the lots are flat. Backyards in Cibolo subdivisions often fall only a few inches to a drainage easement at the back fence, and a few seasons of mulch and landscaping can reverse that fall toward the house. Regrading, downspout extensions and, where needed, a French drain along the wet side protect the pier investment.

On the north end near Garden Ridge and in Northcliffe, piers often hit limestone refusal at four to eight feet, jobs go faster, and the typical problem is a fill pocket under one corner rather than clay movement around the whole house.