Allied Springfield Concrete Construction

Foundation installation in Springfield IL - the right base for the way you live

Planning a new home, addition or garage and unsure about a slab, crawl space or basement? We'll help you choose, then build it to stay put.

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A covered outdoor patio features a concrete floor, brick walls, a stone counter with grill, and cushioned seating.

What goes into a new foundation, and what sets the price?

Foundation installation in Springfield, IL, means building the base a house, addition or garage stands on, starting with footings, the wide concrete pads that spread the weight into the ground, and then walls that are poured or laid in block, finished as a slab, crawl space or basement.

Most people who call us are planning a new home, an addition or a bigger garage, and the first thing to settle is which type to build. That choice moves the price more than anything, because a crawl space means more digging and concrete than a slab foundation and a basement means the most of all. After that come the size of the footprint, how easily our equipment can reach the spot and what we find once digging starts. The schedule usually turns on the weather, since wet or frozen ground can hold up the dig, and on when the city's inspections fall. When I come out, I'll measure the site and go over each of those with you, so you know exactly what you'd be paying for before anything starts.

What our foundation installation work includes

Before we price anything, I go over the tradeoffs between a slab, a crawl space and a basement with you, because that choice decides what you'll live with for years. Once you've picked, we lay out the footprint, dig to the depth the design calls for and pack the subgrade, which is the ground the footings and slab rest on, so it doesn't settle later the way loose, raked-in dirt does. We set the forms and the rebar, the steel inside that holds the concrete together if it cracks, pour the footings and then pour the walls or lay them in block. On a basement, waterproofing and drainage are part of our plan from the start rather than something added at the end. We keep the new concrete damp and protected while it cures, which is the slow hardening that gives it its strength, then clean up and leave the site ready for framing. If the budget has to give somewhere, I'd rather trim the finish work than the base, because once the house is on top, nobody can fix what's underneath.

  • Slab on grade

    A slab suits single-story homes, garages and additions on fairly flat lots where you want the least digging. The pipes run under the concrete, though, so if you expect to change your plumbing, wiring or heating later, those repairs may mean breaking through the floor.

  • Crawl space

    A crawl space suits owners who want to reach plumbing and wiring from underneath without cutting concrete. It does need ventilation and moisture control, because a damp crawl space invites mold, mildew and rot in the framing.

  • Full basement

    A basement suits families who want storage, mechanical space or another living area below the house. It takes the most digging and concrete, and keeping water out is the part we plan hardest for.

Foundation installation in Springfield: what the city asks

Springfield's Building & Zoning Department takes permit applications, and the city requires a floodplain development permit for any development in a floodplain, new buildings included. We check what the city or village office asks for at your address and take care of the permit paperwork for our work when a permit applies. One duty falls to you as the owner, so I'll raise it early. The city's building permit application makes the applicant and the owner responsible for soil compaction and mine subsidence research, which looks at whether the ground could sink over old mines. If a garage is part of your plan, the city's garage notice also requires footings below the frost line for every attached garage and for detached garages over 900 square feet, and that changes how we lay out the footing work.

Winters here freeze the ground hard, so frost and drainage come up on every foundation we talk through, and we plan the same way on jobs in Chatham and Decatur. We're based in Springfield and work across the cities around it, so if yours isn't listed, please ask about your address.

Request a foundation estimate for your lot

We reply to every request within one business day, and I'll set a time to come out and look at your site myself. The estimate is free, done on site, and carries no obligation.

(217) 210-0810

Springfield foundation questions

How much does a new foundation cost in Springfield, IL?

A slab or crawl space foundation usually costs about $4 to $16 per square foot across the US, so treat that as a national guide rather than a Springfield price. Basements cost more than either, mainly because of the extra digging and concrete. I'll give you the figure for your own house at the estimate, once I've seen the lot and we've settled on a type.

Can a slab foundation crack from frost in central Illinois?

Yes, in cold climates a slab can crack from frost heave, which is the ground lifting as the soil freezes, unless it's built below the frost line or properly insulated at the edges. If you're leaning toward a slab, ask how the design protects it from frost, and I'll walk you through how we'd handle it on your lot.

How long does it take to build a basement foundation?

Basement construction usually takes about 2 to 4 weeks by national guides, and the digging depends on the weather. A wet spell or an early freeze can push the dig back, so leave some room in your building schedule before you book the framer.

What causes water to get into a basement, and how do I prevent it?

Soil pressure pushes water through cracks, joints and porous concrete, which makes water the main ongoing risk for any basement. Without proper waterproofing and drainage a basement can flood, so as mentioned above, we plan both before the digging starts.

Should I worry about old coal mines under my lot in Springfield?

It's worth a check, though ground sinking over old mines is uncommon. Some homes and built-up land in Illinois sit close to underground coal mines, and the state geological survey's ILMINES viewer lets you look up your property. The Illinois Department of Natural Resources answers questions at 217-782-0588, which helps with the mine research the city's application asks of you.

What do I need ready before getting a foundation estimate?

Have your property address, the foundation type you're leaning toward, the rough size of the building and whether the lot sits in a floodplain. If you aren't sure about the type or the floodplain yet, that's fine, and we'll work it out together when I come out. Call (217) 210-0810 or use the form above.

Plan your Springfield foundation with us

The choice between a slab, crawl space and basement is easiest to change before your plans are final, so call (217) 210-0810 or use the form while there's still room to adjust.

(217) 210-0810
(217) 210-0810Request an estimate