Foundation Repair Cost in Denver, CO

What each Denver foundation repair costs

† Mudjacking / slab leveling: Sources disagree widely (>3x): polyurethane foam spot-lifts run well under $1,500, while full slab mudjacking with structural fill runs $4,500–$9,000. Range widened to cover both.

The longest dry run in a decade of Denver maps

Half or more of Denver County has been in severe drought or worse on 98 of the last 522 weekly drought maps, 12th of 33 metros on this index, and 49 of those weeks reached extreme drought. The longest run began in February 2026 and reached 36 straight weeks by October 2026. No earlier stretch in the record ran as long, and 2021, the worst full year, had 20 severe weeks in all.

Clay that dries this deeply pulls back from foundation walls and shrinks beneath slabs. The early signs are gaps between soil and wall, new drywall cracks over doors, and floors that have dropped a little at the edges. The bigger risk comes later. When wet weather returns, the same ground takes water back and swells, and heave follows.

Claystone below the soil survey

Expansive bedrock, the Pierre Shale and other claystone layers, underlies parts of the Denver area. Soil surveys don't reach it. NRCS places 14% of Denver County's soil in its very-limited shrink-swell class and 31% in the somewhat-limited class, 19th of 33, and its most widespread high-shrink series are Racas, Denver and Englewood. Those ratings cover only the top few feet, across 64,380 rated acres, for a house without a basement.

Where swelling bedrock sits within reach of a foundation, it can lift a house no matter what the surface rating says. Treat the county figure as the minimum exposure, not the whole picture.

Basement floors that rise

If your house has a basement, heave often shows in the floor before the walls. A slab poured on swelling ground lifts in the middle or along one side, interior walls resting on it get pushed up, and doors on the floor above start to bind. Cracks in a heaved slab are often widest at the top of the rise.

That pattern changes how to read the table. Mudjacking / slab leveling ($600–$9,000) raises concrete that has sunk; it can't lower concrete that has risen, and lifting the rest of a floor to match a heaved section is rarely the right fix. Piers have a related limit: a pier set in claystone that swells can be pushed up too, so ask the engineer how deep the proposed piers go relative to the zone that moves. When piers are the plan, the per-pier row ($1,000–$3,000) and the full underpinning row ($4,500–$30,000) apply.

Steady moisture as the first spend

The least expensive way to limit claystone movement is to keep moisture around the house as even as possible, so the ground doesn't swing between very dry and very wet. That means roof water carried well away from the walls, soil graded to fall away from the house, and no irrigation pooling against the foundation. Drainage correction runs $2,800–$12,000 here, and on a house that has already moved, it is often worth doing before structural work so the repair isn't fighting the same water.

How Denver policies treat soil that swells

A standard homeowners policy lists soil expansion and contraction among its earth-movement exclusions, next to settling, and it treats gradual wear as maintenance. Heave from swelling claystone fits that language squarely, so a policy will rarely pay for it. Coverage comes into play only when a sudden covered event caused the damage, for example a burst pipe that floods and washes out the soil under a slab. Read your policy's exact wording before you count on anything.

Denver prices next to Colorado Springs

This page applies a 1.00 labor factor built from statewide Colorado construction wages, $1,568 a week in 2025 Q2. Colorado Springs works out to 0.95 from its own metro wages, so the same job prices a little lower there: $4,800 at the middle of its table against $5,000 here. The real spread between two Denver bids comes from scope, though: how many piers, how deep, and whether drainage is included.

Denver heave and drought questions

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