Foundation repair in Clear Lake

Foundation repair in Clear Lake is mostly slab work on houses built after 1963, the year Clear Lake City opened beside NASA's new space center. What sets the area apart is water, not sinking. Harvey dropped the heaviest rain in Harris County here, and Clear Creek, Armand Bayou and Horsepen Bayou all rose to record or near-record levels. Subsidence, by contrast, has slowed to a crawl according to the USGS. Clear Lake sits inside the City of Houston, so the city's building permit applies. This page covers each of those in turn; for other neighborhoods, see the Houston areas page.

Did Harvey's rain on Clear Creek damage foundations in Clear Lake?

Harvey hit this corner of the county harder than any other. The Harris County Flood Control District measured 47.4 inches in four days at Clear Creek and I-45, which is 95% of the Probable Maximum Precipitation. Ground that is soaked for days and then dries out can shrink and settle unevenly under a slab, so a Clear Lake house that took water in 2017, or stood in it, deserves a careful look even now.

In the Harris County part of the Armand Bayou watershed, 3,790 homes flooded, and along Clear Creek 5,480, with more upstream toward Friendswood. Horsepen Bayou, a tributary of Armand Bayou, set new records along its entire channel, above both Tropical Storm Allison and Hurricane Ike's surge. The Horsepen Creek gauge at Bay Area Boulevard logged 44.7 inches over the four days.

One detail matters for waterfront streets. HCFCD found that Clear Lake itself stayed on average 1 to 2 feet lower during Harvey than during Ike's storm surge in 2008. A lakefront house may have been tested harder by Ike, so mention both storms. Our guide to foundation settling explains what new cracks or sticking doors usually mean.

Is the ground under Clear Lake still sinking?

Only slightly, by the USGS's measurements. Satellite radar from 1996 to 1999 picked up about 0.4 to 0.8 inches of localized sinking near the Johnson Space Center and in the Sagemeadow subdivision east of Clear Creek. Over the same years the Clear Lake extensometer recorded 0.1 inch and the Johnson Space Center extensometer 0.4 inch.

The reason is policy. In 1992 the Harris-Galveston Subsidence District adopted a plan that limited groundwater pumping in its southeastern and central areas, and readings near the bay have stayed small since. Today the district's fastest readings, over 3 cm a year, come from around Katy and Fulshear on the far west side, not from the bay.

So in Clear Lake a cracked slab more often points to soil moisture swings, poor drainage or old flood soaking than to the land dropping. Foundation drainage covers the fixes that often come first.

What kind of foundations do Clear Lake houses sit on?

Most Clear Lake houses sit on concrete slabs poured directly on the old prairie. City of Houston planning records that before NASA's Manned Spacecraft Center was built in the early 1960s, the area was largely coastal prairie used for ranching. Clear Lake City was formally opened on September 15, 1963, and building has carried on since, with new homes still going up in its northern part.

That gives a wide spread of slab ages. The city counted 26,884 housing units in Super Neighborhood 81 in 2019, with a median housing value of $237,277, and about 54% of homes owner-occupied. On an older slab, the usual repair is a row of pressed piers under the sagging edge beam; foundation piers shows how they work, and slab foundation repair covers leveling and interior work.

Do you need a City of Houston permit for foundation repair in Clear Lake?

Yes, for most addresses. Clear Lake City was annexed into the City of Houston in 1977, and the city issues building permits for residential foundation repair, including shim-and-level jobs on block and base foundations. Neighboring Webster, Nassau Bay, Seabrook and League City are separate cities with their own building departments and rules, so confirm which one covers your street.

A Clear Lake mailing address is not proof the house is inside Houston's limits, so check with the city's permit office first. Nationally, This Old House puts permit fees at $75 to $150.

What should you tell a contractor before a Clear Lake quote?

Tell them the flood history first: whether water reached the house in Harvey, in Ike, or in both, and how long it stood. Add the year the house was built, any past repair paperwork, and whether you back onto a bayou, ditch or the lake. With that, a local foundation contractor can judge whether the slab moved once after a storm or is still moving.

An inspection usually comes first. Houston Press puts the average around $600, within a $300 to $1,000 range, and our foundation inspection page explains what you get for it. For the price of the repair itself, see the foundation repair cost guide. We'll arrange a visit and you get a written quote before any work starts.