Residential Foundations | Kairos Foundation Group

Illustration of a modern home with a soil cutaway showing helical piles installed beneath the foundation

Helical pile foundation system, illustrated

What residential foundation and site work does Kairos coordinate?

Helical pile installation

Kairos's lead method for residential lots. A compact excavator-mounted drive head installs helical piles with a smaller footprint than a large drilling rig — well suited to tight hillside driveways, mature trees, and finished landscaping close to the build.

Drilled piers and caissons

Where soil conditions or load call for it, we plan drilled pier and caisson foundations instead — carrying the home's weight past reactive surface soils into stable bearing strata.

Custom hillside & waterfront foundations

Lake Austin estates, Hill Country slopes, and other difficult lots get a foundation plan built around the actual grade, access, and soil report — not a standard pad foundation adapted after the fact.

Site evaluation before design is fixed

We evaluate the lot's soil, slope, and access constraints before your architect locks the foundation plan, so the design and the ground it sits on get decided together.

Foundation underpinning & retrofit stabilization

For an existing home with settling, cracking, or a foundation that's moved, we plan underpinning and retrofit stabilization scoped to the specific cause, not a blanket pier replacement.

Slope & retaining wall stabilization

Cut-and-fill hillside lots and retaining structures get evaluated and stabilized as part of the same foundation plan, not treated as a separate problem after the home is built.

Ongoing foundation monitoring & maintenance

After the work is complete, we can coordinate periodic monitoring so movement gets caught and addressed early, before it becomes a structural issue.

Mini excavator with a helical pile drive head boring a pile beside a brick house

Helical piles, sized for a residential lot

A compact rig, not a drilling tower.

Helical piles go in with a mini excavator fitted with an auger-style drive head — not the large drilling rigs used on commercial sites. On a residential lot that means less staging space, less disruption to landscaping and hardscape, and access through a standard driveway or side yard that a full-size drilling rig can't use.

Central Texas ground

What's actually under your lot, and why it matters.

Most residential foundation problems in this region trace back to one of three ground conditions. A site evaluation is how we find out which one applies to your lot before the foundation plan is set — not after.

Expansive clay — Central Texas clay swells when wet and shrinks when dry, and that seasonal movement is the most common cause of residential foundation cracking and heaving in the Austin area. A shallow slab or spread footing sits directly on soil that can look stable when it's dry and move significantly once it isn't.
Cut-and-fill hillside lots — grading a slope for a home means cutting soil away on one side and filling it in on the other. The fill side hasn't been compacted or engineered the way undisturbed native soil has, so a foundation spanning both sides of a cut-and-fill line needs piles or piers deep enough to reach consistent bearing on either side.
Karst-influenced rock near the Balcones Escarpment — West Austin, the Hill Country, and the escarpment corridor sit over limestone that can carry voids, fractures, and rock depth that varies across a single lot. A boring or two isn't always enough to know what a pile or pier will actually hit, which is part of why evaluation happens before the foundation plan, not after.

How Kairos works

One point of contact, from evaluation through delivery.

Kairos plans and coordinates your residential foundation work. We don't own drilling equipment or field crews — we evaluate your site, build the foundation plan, and connect you with the right specialist from a network of 400+ vetted specialty contractors across Central Texas, backed by 20+ years of combined foundation and construction experience. You deal with one team throughout, from the first site visit to the final delivered foundation.

Site evaluation and foundation plan before you commit to a method
Matched to the right specialty contractor for your specific ground conditions, not a default crew
One point of contact for scheduling, questions, and coordination through final delivery

Board-formed concrete entry with a walnut front door on a finished custom home

What it's for

A foundation the rest of the home can rely on.

Finish work, hardscape, and landscaping all depend on what's underneath them staying put. Planning the foundation around your lot's actual soil and grade — instead of a standard spec adjusted after the fact — is what keeps the rest of the project from having to compensate for it later.

FAQ

Residential foundations, answered directly.

What is helical pile installation, and why does Kairos use it as the lead method for residential foundations?

Helical piles are steel shafts with helix plates that get screwed into the ground with a hydraulic drive head, rather than drilled and filled with concrete. For residential lots, that means a compact excavator can do the work instead of a large drilling rig — which matters on a hillside driveway, a tight side yard, or a lot with mature trees and finished landscaping close to the foundation line. It's Kairos's lead method for residential work, though drilled piers or caissons are the right call on some sites, which is part of what a site evaluation is for.

How do you evaluate a hillside or waterfront lot before the foundation design is finalized?

We review the site's grading, access, and soil or geotechnical report — and help coordinate one where none exists yet — before your architect locks the foundation plan. On a hillside or Lake Austin waterfront lot, that means understanding where cut meets fill, how close bedrock or karst voids sit to the surface, and how equipment will actually reach the build pad. Foundation and design decisions get made together, not one after the other.

My existing home has foundation cracks or has started settling. Can Kairos help, or only new construction?

Both. Underpinning and retrofit stabilization for existing homes is one of our core services, alongside new construction. We evaluate what's actually causing the movement — expansive clay, an undersized original foundation, drainage, a cut-and-fill lot settling unevenly — before recommending a fix, rather than defaulting to a standard pier replacement.

What does “expansive clay” actually mean for my foundation, and how does that change the approach?

Central Texas clay swells when it absorbs water and shrinks as it dries out, and that seasonal movement is the most common cause of residential foundation cracking and heaving in the Austin area. A shallow slab or spread footing sits directly on that moving soil. Helical piles and drilled piers instead carry the home's load down past the reactive clay layer into stable bearing soil or rock, so the foundation isn't riding the seasonal swings.

If Kairos doesn't own the drilling equipment, who actually performs the work?

As prime contractor, Kairos holds the contract, plans the foundation work, evaluates your site, and stays your single point of contact from first evaluation through final delivery — while subcontracting the drilling and installation itself to a specialty contractor from our network of 400+ vetted partners across Central Texas, matched to what your specific site needs. You're not coordinating separate contractors yourself; we do that, and you deal with one team throughout.

Do you work on Lake Austin, West Lake Hills, and other specific Hill Country communities, or just “Austin” generally?

Yes — residential foundation work across the Austin metro and Texas Hill Country, including Lake Austin, West Lake Hills, Bee Cave, Lakeway, Dripping Springs, Spicewood, and the wider Hill Country and Central Texas area. Ground conditions vary block to block in this region, which is part of why every job starts with a site-specific evaluation rather than a standard spec.

Get started

Have a hillside, waterfront, or difficult lot?

Send us your site details, plans, or a survey and we'll evaluate what your ground actually needs before the foundation plan is set.

Request a site evaluation

Foundation planning for hillside, waterfront, and hard-to-build residential lots.