Abilene Foundation Guide: Clay Soil, Piers & Permits

Updated October 24, 2026. This guide is general information, not legal or engineering advice. Rules change, so confirm with the agency listed before you start work.

Quick reference

Topic	What to know	Source
County soils	Loamy reddish-brown surface over clayey subsoils that often contain lime	Handbook of Texas (Taylor County)
Abilene series	Established in Taylor County in 1915; 35 to 50% clay subsoil	USDA NRCS (Abilene)
Rowena series	Dry-season cracks 1 to 3 cm wide reaching 51 to 76 cm (20 to 30 in.) deep	USDA NRCS (Rowena)
Expansive soil	Wet soil can lift a building; dry soil can let it settle	TDLR technical bulletin
Climate	About 25.24 in. of precipitation a year; July highs average 96.4°F	NOAA 1991–2020 normals (via Wikipedia)
State license	No state license for general contractors or foundation repair	TDLR; Texas Sunset Advisory Commission
City permits	Building Inspections, City Hall, 555 Walnut St. (northeast entrance)	City of Abilene
Watering	Normal conservation, two days a week; midnight–10 a.m. and 6 p.m.–midnight (Oct. 2026)	City of Abilene
Before digging	Contact Texas811 at least two business days ahead	Texas811

What is the ground under Abilene made of?

The Handbook of Texas describes Taylor County as Rolling Plains prairie with loamy, reddish to brownish surface soils over clayey subsoils that often contain lime. The USDA's Abilene soil series was established in Taylor County in 1915. It's a deep, well-drained clay loam whose subsoil runs 35 to 50 percent clay, with lime beginning 10 to 28 inches down. The series description says Abilene soils don't have vertic properties, meaning they don't crack open the way the most active clays do. It also names neighbors that do, including Rowena.

The Rowena series is extensive across the same Rolling Plains and Rolling Limestone Prairie regions. When it dries, it opens cracks 1 to 3 centimeters wide that reach 51 to 76 centimeters (about 20 to 30 inches) deep, and USDA describes its linear extensibility as more than 6 centimeters in the top meter, which signals high shrink-swell. Which soil sits under your particular house can only be told from a soil map or a test, but clayey subsoil is the rule here, not the exception.

What does that clay do to a house?

The Texas Department of Licensing and Regulation sums it up in its technical bulletin on residential foundations over expansive soils: when soil moisture is high, the soil can lift a building, and when it drops, the soil can settle out from under it. The bulletin lists drainage, landscaping, watering and maintenance as factors in how a foundation performs, and says the ground should drain water away from the house on all sides.

How does Abilene's climate add to it?

Abilene sits at the dry western edge of the humid subtropical zone, with semiarid country just to the west. Under 1991 to 2020 normals at Abilene Regional Airport, the city averages 25.24 inches of precipitation a year, July highs average 96.4°F, and the record high is 113°F. Hot, dry spells pull moisture out of the clay along the edge of a house, and heavy storms put it back fast. That swing is what pushes and drops parts of a foundation.

Slab or crawl space: how do repairs differ?

Slab on grade: a dropped section is usually supported with piers under the beam and lifted. See slab foundation repair.
Pier and beam: the crawl space allows re-shimming, new supports and wood repair without breaking concrete. See crawl space repair.

Either way, ask for floor elevation readings and a clear explanation of the cause. A slab whose middle has heaved from a leak needs a different fix than one whose edge has sunk. Our foundation piers page covers the pier types and what to ask.

Can you water around the foundation?

Steady soil moisture can limit shrinking in a dry stretch, but overwatering can cause swelling. As of the city's October 13, 2026 update, Save Abilene Water lists normal conservation with two watering days: odd-numbered addresses on Thursday and Sunday, even-numbered addresses on Tuesday and Saturday, between midnight and 10 a.m. or 6 p.m. and midnight. The page links a stage chart with the full rules. Lake Fort Phantom Hill and Hubbard Creek Lake together were at 41 percent of capacity on that date, and rules tighten as lake levels fall, so check the current stage first.

Does Texas license foundation contractors?

No. TDLR licenses trades such as electricians and air conditioning contractors, but its regulated programs don't include general contractors or foundation repair. The Texas Residential Construction Commission, which registered home builders and remodelers, was abolished when its law expired on September 1, 2009, according to the Texas Sunset Advisory Commission. That leaves more of the checking to you.

What about permits in Abilene?

Inside the city, Building Inspections in Planning & Development Services handles permits from City Hall at 555 Walnut Street. The city's FAQ says permits are required for work such as altering or constructing buildings, that doing permitted work without a permit can lead to a citation, and that you can check whether a contractor is registered through MyGov. Ask whether your repair needs a permit. Merkel, Tye, Buffalo Gap and Anson have their own city or town governments, and rural homes fall under the county, so ask the contractor and the local office.

How should you compare bids?

Ask for the elevation readings and a drawing that shows each pier
Compare pier type, count and expected depth, not only the total
Read the warranty for length, transferability and exclusions
Ask what drainage and plumbing checks come with the repair
For a big job or conflicting bids, hire a licensed professional engineer, verifiable through the Texas Board of Professional Engineers and Land Surveyors
Confirm the contractor contacts Texas811 at least two business days before digging

Common questions

Is some foundation movement normal around Abilene?

Some movement is common on clay soils in this climate. Movement that keeps getting worse, or several warning signs at once, is worth having evaluated.

Do I need an engineer?

Not always. For a large repair, a disputed cause or a home sale, an independent engineer's report gives you a plan to compare bids against.

Does Abilene register contractors?

The City of Abilene lets you check registered contractors through its MyGov site, and requirements vary by trade. Texas has no state license for foundation repair.

Abilene foundation repair guide (2026)