Foundation repair · Cedar Park, Texas
Foundation Repair in Cedar Park, TX
Limestone a few inches down, no very high clay in our sample, and generous watering rules.
Cedar Park has some of the steadiest ground around Round Rock. Of 25 points we checked in the USDA soil survey, not one landed on soil with a very high shrink-swell reading. So if a Cedar Park house is cracking, the usual "it's the clay" answer may not be the whole story, and that's worth knowing before anyone quotes a repair.
- Free inspection
- No obligation
- Town-by-town soil data
- Referral service, disclosed
- Call (737) 259-7007
What have you noticed?
Here's what Cedar Park's soil, homes, rules and water look like in the public records, and what each means for a foundation.
Cedar Park's Side of I-35
Cedar Park sits on the west side of the old fault line that splits the Round Rock area. On the state geologic map, 48% of our points fall on the Edwards and Comanche Peak limestones and 44% on the Fredericksburg Group, the older rock that a 2007 University of Texas study places on the west side of the Balcones Fault Zone.
The soil on that rock is thin. In our USDA sample, 76% of the points read low or moderate on the shrink-swell scale and none read very high. The main soils:
- Eckrant, 64%. A very stony clay with limestone 8 to 11 inches down in every Eckrant map unit we read in Cedar Park. In our Cedar Park sample it reads 4.4, which the USDA calls moderate.
- Fairlie, 12%. The exception. Fairlie is a clay formed from Austin chalk that reads 7.5, in the high band, and runs about 46 inches deep before it reaches soft rock. A house on Fairlie has much more soil under it than one on Eckrant.
- Georgetown soil and Doss, 8% each. Georgetown soil has a stony top reading 2.5 over a 70% clay layer reading 8.5. Doss is a silty clay over soft rock about 17 inches down.
- Brackett, 4%, reads low, and one more point landed on a mapped quarry pit.
The USDA rates anything over 9 as very high and anything under 3 as low. For most of Cedar Park, that means a slab sitting on a few inches of moderate soil over rock.
What does that mean when a Cedar Park house moves? With so little soil to swell and shrink, other causes deserve a close look: water collecting along the slab, a plumbing leak, a big tree near the house, or a lot that sits on Fairlie or Georgetown soil instead of Eckrant. Our Round Rock soil guide shows how to look up your own lot.
What Cedar Park Homes Are Built On
Cedar Park counts 29,220 homes, and most are young. The median home was built in 2004. The 2000s were the busiest decade, with 34.2% of homes, followed by the 2010s at 28.5% and the 1990s at 22.5%. All told, 86.5% went up in 1990 or later, and just 1% predate 1960.
Young houses still move. The Texas engineering guidelines also point out that foundations are generally built with some differences in height across the surface, so a first floor survey of a newer house needs care: a low corner may have been built that way. If yours is a slab, it may be post-tensioned, with steel cables tightened inside the concrete. Many newer Texas slabs are. Whether yours is, and what's under the floor, is something a foundation inspection can settle.
- 2004Median year Cedar Park homes were built
- 1.0%Built before 1960
- 86.5%Built in 1990 or later
Source: US Census Bureau, American Community Survey 5-year estimates, 2023.
Permits and Rules in Cedar Park
We couldn't open Cedar Park's own permit pages, so this comes from the city's text as indexed online. Confirm it with the city before work starts.
- A permit for changes to an existing structure. The city's guidance says permits cover physical alterations to existing structures, that its lists are not complete, and that it's best to call before work begins.
- Applications online. Permits go through MGO Connect, and every contractor has to register with the city.
- A penalty for skipping it. The city code sets the penalty for starting work without a permit equal to the permit fee.
None of the pages we could read named foundation repair or listed its fee, so ask the city's permit office directly. Texas engineering law also matters here: it doesn't exempt the design of a repair to a house slab on expansive soil, unless the work meets the residential code as the city applies it. Our permits guide compares the towns.
Watering Rules in Cedar Park
Cedar Park's drought code leaves a lot of room for foundation watering, as long as you use the right method.
- Stages 1 to 3: outdoor watering is banned from 10 a.m. to 7 p.m., except with a hand-held hose that has a shut-off nozzle, or a bucket. But soaker hoses and drip irrigation are exempt from the weekly schedule and can run at any time of day.
- Stage 4: soaker hoses, drip lines and hand watering are limited to 5 to 8 a.m. and 8 to 11 p.m. on your watering day.
- Stage 5 and the emergency stage: lawn watering stops, but a hand-held hose, soaker hose or drip line can still be used for trees, foundations and vegetable gardens.
Check the city's current stage before you set up a routine. On thin soil over rock, what helps is steady moisture, not more of it; the Texas guidelines warn against excessive watering. For how and when to water, read our foundation watering guide.
Cedar Park and the Edwards Aquifer
Most of Cedar Park sits on the Edwards Aquifer contributing zone. On the Texas Commission on Environmental Quality's map, 64% of our points fell there, 24% on the recharge zone and 12% outside every zone.
On the contributing zone, the state rules apply only to work that disturbs at least five acres, far beyond a repair on one house. The recharge zone is different: the rules cover digging there and leave out routine upkeep of an existing building, and we haven't found a TCEQ answer on where repair piers fall. If your house is on the recharge part of Cedar Park, ask TCEQ's Austin office at 512-339-2929 before digging starts. Our Edwards Aquifer guide has the details.
Foundation Repair Services in Cedar Park
- Foundation inspection to find the real cause on ground that barely moves
- Foundation crack repair for cracks that may be cosmetic
- Slab foundation repair for a slab that has dropped, on rock or on deeper soil
- House leveling when a whole floor has drifted
- Pier and beam repair for raised houses with a crawl space
Cedar Park Foundation Repair Questions
There's hardly any clay under Cedar Park. Why is my house cracking?
Most of Cedar Park has only inches of soil over limestone, so look at other causes too: water pooling along the slab, a leak, or a big tree. About 12% of our sample was Fairlie clay, which runs about 46 inches deep and reads in the high band, so your lot may not be typical.
Can I run a soaker hose on my foundation during a drought in Cedar Park?
Through Stage 3, yes, at any time of day. In Stage 4 it's limited to early morning and evening on your watering day. Even in Stage 5, the city still allows a soaker hose for foundations.
Does Cedar Park require a permit for foundation repair?
The city requires permits for changes to existing structures, but the pages we could read didn't name foundation repair or its fee. Call the city's permit office before work starts.
Nearby Towns We Serve
Near Cedar Park, we also serve Leander, Brushy Creek, Liberty Hill, Georgetown and Round Rock.
Brushy Creek makes a useful comparison. It has almost as little very high clay as Cedar Park, but 48% of its sample is Georgetown soil with a 70% clay layer under a stony top. See all service areas.
Get a Free Foundation Inspection in Cedar Park
On ground this steady, a measured look is the quickest way to find out what's really going on. Send us a few lines about what you've seen and your ZIP code, and a foundation repair professional who works in Cedar Park can come out. The visit is free.
What have you noticed?