Concrete Foundations Colorado Springs

Concrete Foundations in Colorado Springs

If you need concrete foundation work in Colorado Springs, footings and stem walls for a detached garage, slab-on-grade for an addition, or full residential foundation, we pour to El Paso County code with proper frost-depth, rebar, and waterproofing. Coordinate with your framer, plumber, and inspector.

36" frost-depth code-compliant
3,500–4,000 PSI with rebar
Footings, stem walls, & slab-on-grade
Permit pull & inspection coordination

Get Free Quote Call (719) 555-0100

What we pour

We do three foundation types most often in Colorado Springs:

Footings + stem walls (most common)

Continuous reinforced footings (typically 8" × 16" minimum, deeper per soils report) at 36"+ below grade, then 8" thick reinforced stem walls up to grade or first-floor framing. Used for full basements, crawl spaces, additions, and detached garages.

Slab-on-grade

4" reinforced slab over compacted base, vapor barrier, and 4" gravel layer. Used for slab-foundation homes, garage floors, sheds, and ADUs. We thicken edges to 12–16" for perimeter bearing.

Thickened-edge / monolithic pours

For sheds, accessory structures, and some additions, a single monolithic pour with thickened perimeter eliminates separate footing pours. Faster and cheaper when the structural engineer approves it.

Standard inclusions

Permit application support and inspection coordination
Excavation to frost depth (36" minimum per El Paso County code)
Footing forms and #4 rebar continuous top and bottom
Stem wall forms (rented aluminum), #4 rebar at 16" OC each way
3,500–4,000 PSI mix appropriate to load and exposure
Anchor bolts set per IRC and as called out on plans
Exterior waterproofing membrane on basement walls below grade
Drain board and perforated drain tile where required
Strip, backfill prep, and final walk-through with framer

Code & soils, what's unique to Colorado Springs

El Paso County has adopted the 2018 IRC with local amendments. Three things that come up on every foundation project here:

36" frost depth. Footings must extend at least 36" below finished grade. Higher elevations (above 7,000 ft) and shaded slopes can require deeper.
Expansive soils. Pierre shale clay east of I-25 and pockets near Black Forest expand and contract with moisture by 2–4 inches seasonally. The soils engineer will call out remedies, overexcavation and replacement, void forms, post-tension slabs, or pier-and-grade-beam foundations.
Radon. Colorado is a Zone 1 (highest) radon state. Most new residential foundations require passive radon-resistant construction: sub-slab gravel, vent stack, and capped openings.

Foundation type comparison

Type	Best for	Pros	Cost relative
Footing + stem wall (crawl)	Most residential	Code-standard, accessible utilities	1.0×
Footing + full basement	Living space below	+sq ft, storm shelter	1.6–2.0×
Slab-on-grade	Garages, ADUs, shed	Fast, lower cost	0.6–0.7×
Pier & grade beam	Severe expansive soils	Isolates structure from heave	1.8–2.5×

Why choose us for foundation work

We coordinate with your team, not around them

Foundations sit at the intersection of architect, structural engineer, framer, plumber, and inspector. We've worked with most of the established builders in El Paso County and know which inspectors want what. Over 1,200+ projects we've passed first-try foundation inspection 94% of the time. That keeps your schedule.

Soils report aware, not soils report ignorant

We read the geotechnical report before we quote, we don't price a generic foundation and then upcharge when the engineer specs void forms or piers. Your quote reflects the actual scope from day one.

We don't pour and disappear

You'll have a final walk-through with the foreman, signed-off as-built dimensions, and our number for the duration of the build. If something doesn't line up for the framer or plumber at backfill, we come back same week.

Recent foundation projects

★★★★★

"Detached garage foundation, 24×30. Footing-to-stem in two weeks including inspections. Anchor bolts dead on plan, framer was thrilled."

Greg P.Black Forest · Detached garage foundation

★★★★★

"Addition footing. They flagged a discrepancy in the soils report before pouring, saved us a tear-out. Honest crew."

Linda S.Cordera · Addition foundation

★★★★★

"Slab on grade for our ADU. Vapor barrier, rebar grid, thickened edge, all per engineer. Passed inspection first try."

Marc J.Briargate · ADU slab

Foundation FAQs

What's the frost depth requirement for foundations in Colorado Springs?

El Paso County requires footings extend at least 36 inches below finished grade to reach below the frost line. Some pockets of the city, particularly higher elevations and shaded north-facing slopes, may require deeper footings as called out by the soils engineer or building inspector.

Do I need a soils report for my foundation?

For new construction, the El Paso County Building Department typically requires a soils report (geotechnical investigation) before permit. Areas with expansive Pierre shale clay, common east of I-25 and near Black Forest, often require deeper footings, void forms, or post-tension slabs based on the report's recommendations.

What concrete PSI do you use for foundations?

3,000 PSI minimum for residential footings and stem walls per IRC. We typically spec 3,500–4,000 PSI to add margin against early-age loading and Colorado's freeze-thaw cycles. Slab-on-grade gets 4,000 PSI with 5–7% entrained air.

How long does it take to pour a foundation?

For a typical residential addition or detached garage, footings to backfill ready takes about 2–3 weeks: 2 days excavation, 1 day footing form + rebar + inspection, 1 day pour, 3 days cure, 2 days stem wall form + rebar + inspection, 1 day pour, 7 days cure, 1 day strip and waterproof. Weather and inspection scheduling can extend.