Slab foundation repair in Sugar Land

Slabs in a master-planned city

Sugar Land went from 24,529 residents in 1990 to 111,026 in 2020, much of it through master-planned communities such as First Colony, begun in 1977. Sugar Land's residential permit page, written for new homes, requires post-tension slab designs to be signed and sealed by a professional engineer. In a post-tensioned slab, steel cables cast inside the concrete are stretched and anchored once it has hardened. In a 2010 STRUCTURE magazine article, engineer Bryan Allred wrote that post-tensioned slabs had become common for homes on expansive clay across the Southwest.

Find out what kind of slab you have

A post-tensioned slab changes the rules for anyone drilling into it. Concrete Network warns against cutting or coring one without locating the tendons first, because a severed tendon is difficult to repair. That goes for plumbers, flooring crews and anyone bolting something to the floor, as well as for foundation contractors. Concrete Network adds that many post-tensioned slabs are stamped to alert owners and contractors. Ask your builder, look for the stamp, and tell every contractor before work starts.

How slabs get repaired

The Texas Section ASCE guidelines for residential foundations list underpinning, grouting or mudjacking, crack injection, tendon stressing, and partial demolition and rebuilding as the slab repair methods. In practice:

• Piers under the perimeter beam or interior beams support and lift the low side. This Old House puts them at $1,000 to $3,000 each. See piers and leveling.
• Slab jacking fills a void under a sunken section, at $550 to $1,300 in the same guide. It doesn't change how the clay behaves.
• Tendon stressing applies only to post-tensioned slabs, and the guidelines say it fits when tests show tendon forces below what was specified. It comes after any lifting and crack injection.
• Crack injection restores stiffness across slab cracks. See crack repair.

Leaks and trees come first

On Lake Charles clay, which the USDA rates as very slowly permeable, a leaking drain line can keep one part of the soil wet for a long time while a big oak dries out another. Angi's tree guide notes that roots go looking for water, including at leaking pipes. A plan that lifts the slab without dealing with the leak or the tree is treating the result instead of the cause. The ASCE guidelines' most detailed investigation level includes plumbing tests and a tree survey. See trees and foundations.

The permit

Sugar Land's homeowner permit brochure lists foundation repairs among the work that needs a permit, and lets homeowners pull permits themselves. Missouri City lists foundation repair of any kind as permitted work. Sugar Land Permits: 281-275-2270. Details for all four cities are on the permits page.

What to ask before work starts

• Is my slab post-tensioned, and how will you locate tendons before drilling?
• How many piers, where, and who designed the layout?
• Has anyone tested the plumbing under the slab?
• Do you pull the permit, and is the fee in the price?
• Will floor elevations be measured before and after?

Sources for this page

• Wikipedia: Sugar Land, Texas
• City of Sugar Land: Residential building permits (new construction, additions, remodels)
• STRUCTURE magazine: General Considerations for Post-Tensioned Slabs on Ground (Bryan Allred, January 2010)
• Concrete Network: Post-tensioning basics
• Texas Section, American Society of Civil Engineers: Guidelines for the Evaluation and Repair of Residential Foundations, Version 3 (adopted April 1, 2022)
• This Old House: How much does foundation repair cost? (Stephanie Minasian-Koncewicz, updated March 6, 2026)
• USDA NRCS Official Soil Series Description: Lake Charles series (revised 03/2016)
• Angi: Can tree roots cause foundation damage? (Jouviane Alexandre, updated August 4, 2026)
• City of Sugar Land: Permits homeowner brochure
• City of Missouri City: Types of construction that require a permit and city inspection

Checked October 7, 2026. Rules, prices and contact details change; confirm with the source before acting.