New Braunfels Foundation Experts puts homeowners who need slab foundation repair in New Braunfels, TX in touch with an independent local foundation company that can measure the slab, find out why it moved and lift what has dropped.
New Braunfels was one of the fastest-growing cities in the country from 2010 to 2020, and most of the houses built in that boom sit on concrete slabs. Where those slabs sit matters. New Braunfels sits on the Balcones Fault, where the Texas Hill Country meets rolling prairie land. West of the fault, many lots have shallow soil over limestone; to the east, houses sit on the deep, dark clay of the Blackland Prairie, which swells when wet and shrinks when dry.
Two Kinds of Ground, Two Kinds of Problems
On the prairie side of town, slab movement usually comes from the clay itself: soil that swells in a wet spring and shrinks in a dry August, moving the slab with it. On the Hill Country side, problems more often come from how a lot was built up, such as fill placed over rock, cut-and-fill on a slope or water that runs across limestone and collects against the house. A good inspection starts by figuring out which situation your house is in.
Warning Signs
- Doors that stick, swing on their own or stop latching
- Diagonal cracks from the corners of doors and windows
- Stair-step cracks in brick or stone veneer
- Tile cracking in a line, or a floor that slopes toward one corner
- Gaps at the top of the garage door or between trim and walls
How Slab Repair Is Done
- Elevation readings map the high and low areas of the slab.
- A plan sets the number, type and location of piers.
- Excavation beside the perimeter beam, plus access for any interior piers.
- Piers such as pressed concrete, steel or drilled bell-bottom go in.
- Lifting and shimming bring the slab back toward level.
- Backfill and final readings document the result.
On rocky Hill Country lots, pier depth can be limited by limestone close to the surface, which changes how piers are designed. Ask the contractor how rock on your lot affects their plan.
Water Under the Slab
A leaking drain line under the slab can swell the clay and push part of a house up. A plumbing leak test before repair is common, and another test after the lift catches any pipe stressed by the movement.
Before You Sign
- How many piers, what type, how deep, and where?
- Will I get before-and-after readings in writing?
- Is the slab post-tensioned, and how will you work around the cables?
- Does the City of New Braunfels require a permit, and who pulls it?
- What does the written warranty cover, and does it transfer?
Common questions
How much does slab repair cost in New Braunfels?
It depends mostly on the number of piers. Angi's cost guide lists about $1,000 to $3,000 per pier and an average repair near $4,530. Olshan reports an average of $2,451 for concrete foundation repair in its San Antonio region, and a 2026 roundup of contractor-reported jobs put the Austin average at $13,798. Get an itemized estimate after an inspection.
Does it matter which side of I-35 my house is on?
It can. The Balcones Fault runs through the city, and soils differ on each side: shallower soil over limestone toward the Hill Country, deeper clay toward the prairie. The inspector should look at your specific lot.
Can a new house in New Braunfels need foundation repair?
Yes. New lots can settle, especially where fill was placed, and clay moves regardless of a house's age. Check any builder warranty first.
Will my cracks close after the repair?
Some close partly as the slab is lifted. Most homeowners still patch and paint afterward.
Can I stay home during the work?
Usually. Expect noise, crews in the yard and possibly interior access for inside piers.
Is the inspection free?
Some companies charge for inspections and some do not, so ask. Sending a request here is free.