Foundation installation in Helena MT - a solid base set below the frost line
Building a new home and not sure what it should sit on? We help you choose a slab, crawl space or basement, then pour it.
- Licensed and insured.
- Free in-person estimates.
- Replies within 1 business day.
What should your new house sit on?
Foundation installation in Helena means building the concrete base your home sits on. That can be a slab poured on the ground, a crawl space that lifts the house up, or a basement with deeper digging and full walls.
If you're building a new home or an addition, the foundation is the part you'll never look at again and the part everything else depends on, so it's worth getting the choice right before anyone digs. The price moves with the type you pick, the size, how much digging and hauling your lot needs, concrete delivery, permits and whatever the site itself throws at us. The schedule mostly turns on the weather and how fast the permit comes through. A slab is the plainest of the three, and we cover it on its own on our slab foundation building page. Your own figure comes from the estimate, once I've walked your lot.
How do you know which foundation your build needs?
Rooms planned below ground
If your plans show a family room, bedrooms or storage under the main floor, you're looking at a basement, and those walls have to hold back water as well as dirt. Once the dirt is backfilled against them, fixing a leak means digging them out again, so that decision belongs at the start.
A lot that slopes away
A slope changes how much digging the house needs and which way water will run once it's built. Leave it to dig day and you end up paying for surprises, so we look at the grade before we price anything.
Water that sits after rain
Puddles that hang around where the house will go tell us the water has nowhere to drain there. A foundation built without a plan for that water usually ends up with damp walls or a wet crawl space, so drainage goes into the plan before the dig.
How we handle foundation installation
Before anything gets dug, we sit down with your plans and weigh a slab, a crawl space and a basement against the way you'll use the house, because each one suits a different home. If you'll have rooms below ground, we go over how those walls will keep water out while it's still easy to change. Then we lay out the house on the ground, dig below the frost line, which is the depth the ground freezes to in winter, set forms for the footings and walls, and tie in rebar, the steel that keeps the concrete from pulling apart if it cracks. We pour, strip the forms, treat the walls and backfill once the concrete can take the load. I'd rather spend an extra day on the dig and the base than on anything you can see, because nobody looks at the ground under a house again, and it's the first thing that shows when it was rushed.
Builders often have us pour concrete footings on their own, the wide base under the walls, when they're adding onto a house or framing on a tight schedule. On commercial or larger properties, the same crew can take on concrete parking lot building, so the building and the lot get planned together.
Slab on grade
A slab skips the deep digging and the foundation walls, so it usually suits a single-level home where you don't need anything under the floor. The catch is there's no space down there for pipes or ducts later, so those get planned before the pour.
Crawl space
A crawl space raises the house off the ground and leaves a short space under the floor you can get into for repairs. It suits homeowners who want that access without taking on a full basement.
Basement
A basement takes the deepest digging and full walls, and it gives you real rooms or storage under the house. It suits a family that needs the space and is ready to put money into keeping water out of it.
Get a foundation estimate after I walk your lot
We'll reply within one business day to set a time. I come out myself, walk the site, hear what you have in mind and write up a free estimate, and you're under no obligation to go ahead.
- Based in
- Helena, MT 59601
- Hours
- Mon–Fri: 7 AM–10 PM, Sat–Sun: 6 AM–11 PM
What happens after you call us about a foundation in Helena?
Here's how a foundation job runs from your first call to the cleanup, and who you'll be dealing with along the way.
Call or send the form
Call (406) 324-9341 or use the form with a few lines about your build. We set a time for me to come out to the lot.
I walk the site with you
I look at the grade, where the water runs and how you plan to use the house, and we talk through slab, crawl space or basement. The estimate spells out the foundation type, the digging and the work it covers, so you can see where the money goes before you decide.
We handle permits and timing
If you go ahead, we sort out the permit side and plan the pour around the weather. That way the cold doesn't catch the job half done.
My crew digs, pours, cleans up
My crew and I do the dig, the forms and the pour ourselves, then clean up the site when we're done. You're left with a finished foundation ready for the framers.
Why Helena builders and homeowners call Helena Concrete for foundations
The owner writes your estimate
I come out to look at the job myself and write the estimate, and then I'm on site working it with a small crew. The person who told you how it would go is the one pouring your concrete.
Taught to slow down on prep
I grew up pouring concrete beside my dad around Helena and spent years on his crews, and he taught me to take my time on the groundwork. On a foundation that matters more than anywhere, because nothing gets fixed easily once a house is standing on it.
Five years running our own jobs
We've been in business since 2021, five years now. Builders call us for footings and foundations and homeowners call us for driveways, patios and garage floors, so we know the ground under a house and the concrete around it.
Licensed and insured for this work
We're licensed and insured. As of 2026, every construction contractor in Montana has to be licensed with the state Department of Labor & Industry, so it's fair to ask anyone bidding your foundation about it.
If you're planning a new build, the best time to talk foundations is before the plans are final. Reach us through the contact page and I'll come out to the lot.
Foundations, footings and permits in Helena
In Helena, the city's building official issues the permit to build, enlarge, alter, repair, move or tear down a building, and a new foundation is the start of building one, so plan on a permit. We find out which office covers your address and take care of the paperwork, which matters around here because Montana lets cities and counties run their own code programs, and places that don't fall under the state's Building Codes Program. The building official also decides when a design professional has to be involved, and the state's guidance generally calls for a Montana licensed design professional where moderate to severe snow or seismic loads need engineering, so we ask early whether your plans need that sign-off.
We're based in Helena and work across the city and the valley around it. On jobs in Helena Valley Southeast and Helena Valley Northwest, we start the same way, checking where water runs across the lot before we set a house on it and lining up the dig early so the pour isn't racing the cold.
Questions about foundations in Helena
How much does a new house foundation cost per square foot?
A professional concrete foundation installation across the US usually costs about $4 to $20 per square foot, going by national 2026 figures. Where your house lands in that range comes down to the type you choose and what your site needs, and the estimate gives you the figure for your lot.
What is the best way to choose between a slab, crawl space and basement?
Start with whether you want usable space under the floor, because that's the biggest difference between the three. If you lean toward a crawl space, ask how the plan handles drainage, ventilation and moisture control, since that space still needs all three. I'll walk through it with you on the lot.
How do I apply for a building permit in Helena, MT?
The City of Helena takes building permit applications through its Civic Access system, where you can also manage the permit and schedule inspections. When we're doing your foundation, we take care of the paperwork, so you usually won't need to log in yourself.
What is the difference between dampproofing and waterproofing a foundation?
Waterproofing stretches as the concrete moves and protects the space inside longer and against more water pressure, while dampproofing coatings generally don't stretch well when a wall moves or cracks. For a basement you plan to live in, waterproofing is the side I come down on.
How deep does a foundation need to be in Montana?
Montana's rule is that footings and foundations go below the frost line. On highly expansive or unstable soil, the footings and walls may need to be engineered and go deeper still, which adds design work. A 2004 national builder's guide also describes a frost protected shallow foundation, which uses insulation to keep the soil warmer and allows depths as shallow as 16 inches in almost all of the continental US, and it finds them best suited to slab homes on low to moderate slopes.
When should you start building a foundation in Helena?
Start early enough that the foundation is done and the house is closed in and heated before freezing weather, which is what a national builder's guide recommends. In Helena that means picking the start date by working back from the cold, so it pays to call while there's still room in the season.
Other concrete work that goes with a foundation
Concrete footings
Adding a room, a garage or a deck on posts can need footings poured on their own, sized for the load and set before the framing starts.
Concrete parking lot building
If your property needs room for customers, tenants or equipment, a poured concrete lot holds up to heavy traffic and can be planned with the building's site work.
Where we build foundations around Helena
Helena Concrete is based in Helena, MT, and pours foundations across the city and the valley around it. Four areas have their own pages here, including Helena Valley Southeast and Helena Valley West Central, and we work in the cities around them as well.
Book a walk-through of your building lot
Have the address, the foundation type you're leaning toward and a rough size in square feet ready when you call (406) 324-9341 or send the form, and we can get to the real questions on the first visit.