Slab foundation building in Vallejo CA - a level base your house can stand on
Holding plans for a new house or addition and unsure what the slab needs? We start with the ground so the floor stays flat.

What does it take to build a slab foundation in Vallejo?
Slab foundation building in Vallejo, CA means pouring the concrete floor your house sits on directly on prepared ground, so the walls go up on a flat, solid base. Most of the time from dig-out to a slab ready for framing goes into the ground work and the cure, not the pour itself.
You're probably holding plans for a new house, an addition or a backyard unit, and wondering what the concrete will run and how long it holds up the framing. The price moves with what the soil needs before we pour, the slab design your engineer calls for, the size and thickness of the slab, and how easily trucks and a pump can reach the spot. The schedule turns on the city's plan review, the weather and the curing wait before framers can load the slab, and if the plans call for deeper concrete footings under bearing walls, those go in with the pour. I'll walk your lot and lay all of it out in writing at the estimate.
How we handle slab foundation building
A house slab starts with the ground under it, so before I price anything I want your engineer's design and soils report in hand, and we talk through whether a conventional slab or a post-tensioned one fits your lot. On the job, our crew digs out to firm subgrade, the soil the slab actually rests on, and packs the base in layers instead of raking loose dirt level, because a base that settles takes the slab down with it. We set the forms, check that water will run away from the house rather than toward it, and place the rebar, the steel that holds concrete together when the ground shifts, or the cables if the design is post-tensioned. We pour early in the day so midday heat doesn't leave a weak, dusty top, finish the surface flat for flooring, and keep it curing, which is the slow hardening that gives concrete its strength. That cure is why we plan framing and deliveries with you ahead of time instead of letting a stack of lumber land on a slab that isn't ready. If the budget gets tight, the base is the last thing I'd trim, because nobody sees it once the concrete is down but it decides whether the floor stays put. We learned that on the farm with barn floors, and the ones poured on packed ground are the ones still standing.
Why Vallejo homeowners call Precision Vallejo Concrete for slab foundations
The owner walks every job
I come out to look at every slab job, write the estimate myself and stay on site running our crew while the work gets done. You get the same person answering your questions from the first visit through the pour.
Licensed and insured in California
Licensed and insured, and you're welcome to ask about both at the estimate. A slab is the base the whole house rests on, so it should go to a crew that answers for its work.
Permits checked with Vallejo first
Each city handles permits its own way, so we check with Vallejo's building division before we start, and when your job needs a permit we can take care of the paperwork and plan our work around the city's inspections. That keeps you from pouring first and finding out later the city wanted something different.
In business since 2017
We've been in business since 2017, based in Vallejo and working in the cities around it across Solano County and Contra Costa County. Most of our calls come from homeowners, along with property owners planning walls, lots and foundations, so engineer's plans are ordinary reading for us.
On a foundation, the ground and the design count for more than anything you'll see on the surface. When you're ready, have your address, any plans and your HOA approval handy, then request an estimate, call (707) 310-8309 or email contact@concretevallejo.com. Your satisfaction, guaranteed.
Get a written estimate for your slab foundation
We reply to every request within one business day, and the estimate is free, done on site and comes with no pressure and no obligation. Once you send this, we'll set a time for me to walk your lot and look over your plans and soils report. I'll explain what I see and put it all in writing.
Slab and foundation work
Questions before you book slab foundation work
What is the best way to build a slab foundation on soil that shrinks and swells?
Deal with the soil first, because a house slab is fairly light and ground that swells and shrinks can lift it and crack it. Caltrans engineering guidance says that where the soil pushes up harder than the slab weighs down, the first fix to look at is digging that soil out and replacing it with backfill, or treating it chemically. The Post-Tensioning Institute, a trade group, calls post-tensioned slabs, which are squeezed tight with steel cables after the pour, a cost-efficient choice for homes on shrink-swell ground, and says they crack less and keep cracks tight so water and insects stay out of the flooring. It's worth asking your engineer whether that design suits your lot.
How much does it cost to build a slab foundation in Vallejo?
There's no set price, because a house slab's cost turns on your soil, the slab type your engineer designs, its size and thickness, and how much ground has to come out before we pour. On less expansive soils, the Post-Tensioning Institute says a post-tensioned slab can stay one even thickness, and any extra material it uses is offset by lower labor and equipment costs. Truck and pump access at your lot matters too, and I'll put the full figure in writing after I walk it.
How soon can I walk on a new concrete slab foundation?
You can usually walk on a new slab within 48 hours, though it takes about a month to fully cure. One cost guide suggests waiting a week before heavier loads go on it to be safe, so we plan the framing crew's start and the lumber delivery with you around that wait.
Does a contractor need a license to pour a house slab in California?
Yes, California requires a license from the state licensing board for anyone building or altering a structure when the project needs a building permit, uses hired workers or costs $1,000 or more in labor and materials, and a house slab easily clears that last mark. The board's concrete contractor classification covers forming, pouring, placing and finishing concrete, which is exactly the work a slab takes, so ask for the license before you sign.
How long does plan review take for a new slab foundation in Vallejo?
Many simple projects in Vallejo get reviewed at the counter while you're there, and others can take up to three weeks. You apply by filling out the permit application, paying the plan check fees and turning in your plans, and if your home is in a development run by a homeowner's association, the city wants plans the association has already approved. We build that review time into the schedule before we set a pour date.
How do I find out if my lot is in an earthquake hazard zone?
Look up your address on the state's EQ Zapp map, which shows whether a property sits in a mapped earthquake hazard zone or whether the area hasn't been evaluated yet. The state sends those maps to cities and counties to control construction, and a city can be stricter than state law, so share what you find with your engineer before the slab design is final.
Related concrete work
- Foundation installation
If your plans show stem walls, a crawlspace or a raised floor instead of a slab on the ground, this is the foundation work that carries the house.
- Concrete parking lot building
When a new building needs paving for cars, deliveries or customers, a poured concrete lot gives it a hard surface that handles heavy traffic and sheds water.
