A foundation in Dubuque has to handle three things most contractors underestimate: Iowa frost depth (42″), Driftless loess soil that varies block-to-block, and bluff-lot grade changes that put lateral load on walls. We pour residential and light-commercial foundations, footings, and slabs across the Tri-State with mix designs and reinforcement engineered for what is actually in the ground.
What we pour
- Footings for new construction (continuous, spread, and pad footings)
- Frost walls and full-basement walls (poured-in-place and ICF)
- Slab-on-grade for garages, additions, outbuildings, shops
- Monolithic thickened-edge slabs (turn-down footing + slab in one pour)
- Garage and shop floors with control-joint plans
- Tie-ins to existing foundations (additions, porches, bump-outs)
- Crawl-space pours and rat slabs
- Foundation waterproofing and drain tile coordinated with the pour
Spec sheet
| Item | Residential | Light Commercial |
|---|---|---|
| Footing | 16–20″ wide × 8–10″ thick | Engineered per loads |
| Footing depth | 42″ below finished grade (IA frost) | 42″ minimum |
| Wall mix | 3,500–4,000 PSI air-entrained | 4,500–5,000 PSI |
| Wall reinforcement | #4 horizontal 16″ OC + #5 vertical 24″ OC | Engineered grid |
| Slab thickness | 4″ residential / 5–6″ garage | 6–8″ |
| Slab reinforcement | Fiber-mesh or 6×6 #10 WWF | #4 rebar grid 16″ OC |
| Vapor barrier | 10-mil under all interior slabs | 15-mil + sealed seams |
Real Dubuque pricing (2026)
| Scope | Range |
|---|---|
| 24×24 garage slab (turn-down edge) | $7,500 – $13,000 |
| Residential basement wall (poured) | $90 – $160 per linear ft |
| Addition footings + frost wall | $5,000 – $14,000 |
| ICF foundation (full basement) | $25 – $40 per face sq ft of wall |
| Slab-on-grade (per sq ft) | $8 – $18 |
Excavation, drain tile, dampproofing, and backfill are quoted as line items so you can compare scopes apples-to-apples.
Bluff lots, loess soils, and what changes
A foundation in Asbury or the West End is not the same job as one in flatter Cascade or Farley. Loess soil (wind-blown silt) covers a lot of Dubuque County and behaves badly when it gets wet. We over-excavate, replace with engineered fill where needed, compact to 95% Proctor, and verify before pouring. On steeper lots, lateral pressure on basement walls is the hidden problem; we adjust rebar spacing and add waterproofing + a positive drain tile path to daylight whenever the grade allows.
Frost depth and why 42″ is non-negotiable
Iowa code calls for footings below the frost line. The local frost depth around Dubuque is 42″ from finished grade. Going shallower (even 36″) is how you get heaving cracks 5 years later. We never cheat depth. Inspectors don’t either.
Quality Concrete Built Tough
Footings are inspected by the local AHJ before any concrete is placed. We schedule the inspection, meet the inspector on site, and do not bury anything until the green sticker is on the wall.
Related services
Ready for a quote?
Call (563) 932-4102 or request a free written estimate. We coordinate with your builder, architect, or engineer; bring drawings if you have them.