Foundations & Slabs
Solid concrete foundations and slab work for residential and commercial projects in The Ottawa Valley.
Concrete Foundations Built Right
A strong foundation is the most important part of any building project. COA Concrete and Construction pours residential and commercial foundations that meet local building codes and are built to perform in Ottawa Valley conditions — through freeze-thaw cycles, soil shifts, and heavy loads.
Whether you're building a new home, adding a garage, or putting up a commercial shop, we handle every stage of the foundation process — from excavation and forming to pouring and finishing. We work with your builder, engineer, or directly with you to make sure the job is done right.
What We Handle
- Residential home foundations
- Garage and shop slabs
- Commercial building foundations
- Basement floors and crawl spaces
- Equipment pads and machine bases
- Grade beams and footings
Why It Matters
Foundation problems are expensive to fix after the fact. Investing in quality concrete work from the start saves money and prevents headaches down the road. Our crew takes the time to get the prep, forming, and pour right — so your structure sits on a base that will hold up for decades.
Need a Foundation Quote?
Tell us about your project and we'll put together a clear, detailed estimate.
Get a QuoteOr call 613-639-9954Our Process
Site Assessment
We visit your property, review plans, assess soil conditions, and confirm the scope of work before providing a detailed quote.
Excavation & Forming
We dig to the required depth, install footings, and build precision forms. Every measurement is checked against your plans and local code requirements.
Pour & Finishing
Concrete is poured, vibrated to eliminate air pockets, and finished to spec. We manage the timing and crew to ensure a consistent, high-quality result.
Curing & Cleanup
We protect the fresh concrete during the critical curing period, strip forms on schedule, and leave the site clean and ready for the next phase of your build.
What Affects the Cost
Foundation pricing depends on several factors specific to your project. The size and depth of the foundation, the type of soil on your lot, and whether you need a full basement, crawl space, or slab-on-grade all play a role. Reinforcement requirements, waterproofing, and site access conditions also affect the final number.
In the Ottawa Valley, soil conditions can vary significantly even within the same neighbourhood. Rocky sites near the Canadian Shield may require additional excavation work, while properties closer to the river may need extra drainage considerations. We account for all of this in our estimates so there are no surprises.
We provide free, detailed quotes for every foundation project. Once we understand the scope, you'll get a clear breakdown of costs before any work begins — no hidden fees, no vague allowances.
Get a Free QuoteFrom Our Blog
5 Signs Your Concrete Foundation Needs Repair
Learn the warning signs that your concrete foundation may need professional repair. Ottawa Valley homeowners — here is what to watch for before small cracks become big problems.
Read Article →Preparing Your Property for a New Foundation
Planning a new foundation in the Ottawa Valley? Learn what site preparation involves, how to prepare your property, and what to expect during the excavation and pour process.
Read Article →Frequently Asked Questions
Most residential foundations take 2–5 days depending on size and complexity. We'll give you a clear timeline before work begins so you know exactly what to expect.