Building on clay ground and worried the foundation will move? We start with your soil, then plan and pour a slab that suits it.
Slab foundation building in Vacaville means pouring a concrete slab right onto prepared ground to carry your house, with no basement or crawl space underneath, and most of what decides how that slab holds up happens before the concrete truck ever shows up.
If you're building a new house, an addition or a shop, the slab is the first thing that goes in and the last thing you can change, so it's worth getting the plan right. The price moves with the size and shape of the slab, how much digging and base work the ground needs, and which slab type suits your soil, while the schedule mostly turns on the city's review of the plans, the weather and how wet the ground is when we're ready to dig. I'll walk the lot with you and put your own numbers in a written estimate, with each part of the work on its own line.
I come out myself to look at your lot and write the estimate, and I'm on site running the job once we start. Our own crew does the digging, forming and pouring, so the person who told you how the base would go is the one watching it go in.
I learned this work on summer crews all through school, pulling forms and finishing next to people who'd done it for decades, and started this business here in Vacaville in 2013. Builders and property owners call us for slabs and footings, not just driveways and patios.
We're licensed and insured. On a foundation that matters more than on most jobs, because the work is part of a permitted build and you want the company doing it covered while our crew and equipment are on your property.
I'd rather slow down and explain your slab before anything gets poured than have you sign something you don't follow, and I'll answer the same question twice. When you're ready to talk about your lot, call (707) 514-3389 or send the request form.
Call (707) 514-3389 or send the form, and we'll reply within one business day, with no pressure and no obligation. I'll set a time to come out, walk the lot and look at the ground, then send you a written estimate with the work spelled out line by line. Have the property address handy, plus any lot or soil paperwork you already have.
In Vacaville, the city's Building Division reviews and inspects all new construction and improvements to existing structures inside city limits, so a new slab foundation goes through it. During plan check the city looks at the foundation plan and the structural calculations, and its plan check page lists Seismic Design Category D, an earthquake design category, among its design criteria and notes flood zone areas, with Public Works as the office to contact about those. When a job needs a permit, we handle the application and set up the inspections with the city, and I check your address with them instead of guessing. Before you sign with anyone, ask who is preparing the foundation plan and calculations for that review.
One private soil data site reports that 51% of Solano County's soil area is high shrink-swell clay, which is a county-wide share and not a reading for your lot. It fits what we see digging in Vacaville and the cities around it, like Fairfield and Davis, where ground that's hard and cracked in late summer turns sticky after the rains, and it's why the slab type talk comes first on our jobs. We're based in Vacaville, and if your city isn't named on the site, call and ask.
I can't give you an honest number until I've seen the lot, because the ground under it and the slab type matter as much as the size. Your written estimate breaks out each part, from digging and base work to the steel, the moisture layer and the pour, so you can see where the money goes and what changes if a choice changes.
Start with the soil, because the ground decides the slab type and the slab type shapes the rest of the plan. From there the foundation plan and calculations go through the city review described above, and our crew starts on the ground once the plans are set.
Expansive clay swells when it takes on water and shrinks as it dries, and that back and forth can lift and drop a foundation unevenly. That's why soil type belongs in your first talk with any builder, and on that kind of soil the post-tensioning industry's trade group presents post-tensioned slabs as a cost-efficient, high-performance answer to shrink-swell problems. Ask whether that slab type suits your lot, and I'll tell you what I think once I've seen yours.
One building research training course lists limited access to utilities, moisture and radon issues, and insulation challenges as drawbacks of slab-on-grade foundations. Lines set in or under the slab are harder to reach later, so weigh those trade-offs against other foundation types before you commit.
Guidance on slab moisture calls for a properly installed vapor retarder below the slab and gravel below it as a capillary break, a layer that keeps ground water from wicking up into the concrete. Those layers are the part I check most closely before a pour, as I said above.
Yes, almost always. California requires a license from the Contractors State License Board for anyone who builds a structure when the project needs a building permit, uses any additional workers, or totals $1,000 or more in labor and materials. A new house slab goes through the city's review, so it falls under that rule.
