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*The Angi rating for Structural Engineering companies in Gillespie, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Structural Engineering needs.

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Last update on April 14, 2026

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Avatar for American Custom Homes
American Custom Homes
5.0(
3
)

Serving Gillespie, IL and surrounding areas

In business since 2000

Emergency services offered

Credit card accepted

"I would like to start off with precise, warm welcome and highly responsible of what they are doing. They really know what they are doing and from start from start to end it has been a great project with new experiences and great craftsmanship. Thanks again guys and i hope to have more work for you soon...
"
Stone Travertine
12x6 Travertine hand cut
Complete Steamer
Recommended by100%of homeowners
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Structural Engineering questions, answered by experts

The depth of any foundation style depends on your climate and how deep the frost line is, as building code requires that the footers of a foundation—which are built into a monolithic slab—sit at least a foot below the frost line. At the southern tip of Florida, for example, a monolithic slab foundation would only need to sit 12 inches under the soil at the widest parts. On some parts of the Canadian border, the frost line is 100 inches, which would mean a minimum of 112 inches, which is prohibitively deep for a monolithic slab.

Yes, unresolved damage can decrease property integrity and market value.

Structural engineers can perform various inspections on different structures in your home. These inspections usually include a report detailing the engineer’s findings and recommendations for repairs so you can determine your next course of action for repairs, replacements, or new builds. Some of the most common structural engineering reports include:

  • Full home inspection: $350–$1,000

  • Foundation: $300–$800

  • Load-bearing walls: $300–$1,000

  • Roof: $150–$600

  • Chimney: $200–$500

Provides expert analysis, ensuring safety and compliance with building codes.

Their expertise in identifying potential problems early and implementing durable solutions safeguards your home’s integrity.

The Gillespie, IL homeowners’ guide to structural engineering services

From average costs to expert advice, get all the answers you need to get your job done.

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