Foundation Cost in Colorado (2026)

New-construction foundation pours in Colorado typically run $16,800–$42,400 for a full-house 2,000 sq ft new-construction foundation pour, with full basement pour as the dominant residential foundation type. Buried footings must clear the 36-inch design frost line. Colorado's combination of expansive bentonitic clay subsoil across the Front Range and Eastern Plains, F2 freeze-thaw exposure across the state, and 36-inch frost depth forces aggressive expansive-soil mitigation on every Colorado residential foundation pour — Front Range subdivisions in Aurora, Castle Rock, Highlands Ranch, and Parker routinely use caisson-drilled-pier foundations with structural floors instead of slab-on-grade, and Colorado statewide radon zone 1 designation forces sub-slab depressurization rough-in pipes through every residential basement and slab pour to enable post-construction radon mitigation system installation.

State Colorado
Cities Covered 21
Typical full-house 2,000 sq ft new-construction foundation pour $16,800 – $42,400
BLS construction-laborer wage $23.67/hr

Colorado climate, soil, seismic & hydrologic drivers

  • Frost-line trench depth: 36-inch design minimum for buried footings
  • Dominant residential foundation type: Full basement — dominant in Upper Midwest, Northeast, and Mid-Atlantic on freeze-thaw + radon-zone-1 sites
  • Expansive soil risk: Very high — bentonitic or Black Prairie clay subsoil drives caisson-pier or post-tension foundation requirement
  • Seismic design category (ASCE 7-22): SDC B — minor seismic risk, standard tie-down requirements
  • Hurricane wind tier: No hurricane wind-design exposure
  • Water table risk: Low — deep water table, no sump-pump rough-in required
  • Sulfate exposure (ACI 318): S2 — severe sulfate exposure, ASTM C150 Type II/V cement required
  • IECC climate zone: 5B-7
  • EPA radon zone: Zone 1 (highest) — passive sub-slab depressurization rough-in required on every basement and slab pour

Colorado licensing & permits

  • License status: No statewide license — municipal credentials only
  • License board: No statewide foundation license — Denver, Colorado Springs, Aurora issue municipal contractor credentials and require Class B General Contractor for residential foundation work (official site)
  • Permit: city or county building permit + soils report required for every residential foundation pour above 5% slope per Colorado Soil Disclosure Act; Front Range subdivisions routinely require post-tension foundation specifications instead of standard slab-on-grade due to bentonite-driven slab heave; Colorado state radon zone 1 mandates sub-slab depressurization rough-in

How foundation pour costs vary in Colorado

State-specific code or insurance rule: Colorado Soil Disclosure Act (CRS §6-6.5) imposes the most restrictive expansive-soil disclosure regime in the country — every Colorado residential property seller must provide a written disclosure of swelling soil risk to every buyer, and every Colorado new-construction foundation pour must include a Colorado Geological Survey-recognized soils report identifying expansive bentonitic clay subsoil risk, plus Colorado Front Range subdivisions routinely require post-tension cable foundation specifications, structural floor (rather than slab-on-grade), or piered foundations with caissons drilled to bedrock on every Aurora, Castle Rock, Highlands Ranch, and Parker residential foundation due to bentonite-driven slab heave on the Denver Basin.

Cities in Colorado

Compare foundation pour pricing for 21 cities across Colorado.

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