Slab foundation building in Covina CA - a slab built for the soil under your house
Planning a new house, addition or ADU on a slab? We start with your soil report and build a foundation that's prepped right underneath.
What goes into building a slab foundation in Covina?
Slab foundation building in Covina means pouring the concrete slab your house, addition or ADU sits on, resting right on prepared ground, so the building has a solid, level base to carry it.
Most people who call us about this are putting up something new and want to know two things first: what it costs and how long before the walls can go up. The price moves with the size and shape of the slab, what the soil report calls for and how much digging and grading the lot needs, and the schedule turns more on the soil report and the city's approvals than on the concrete work itself, so my written estimate lays out what's included for your lot. A foundation job almost always crosses the line where California requires a licensed contractor, which is any project that needs a building permit, uses extra workers or runs $1,000 or more in labor and materials, and we're licensed and fully insured. If you only need footings for a wall or a post, our concrete footings work is the better fit.
What happens when you call us about a new slab foundation?
Call or send us a message
Call (626) 412-8842 or use the form, tell us what you're building and where, and we'll get back to you to set up a visit. If you already have plans or a soil report, keep them handy.
I visit, measure and check
I come out myself, walk the lot, measure and check whether your address falls in the City of Covina or in LA County, because Covina Building & Safety only takes applications for addresses inside city limits, and West Covina and county addresses go elsewhere. Then you get a written estimate that spells out what's included.
We handle approvals and permits
For a new structure or added square footage, the city wants Planning Approval before the permit application goes in, and grading plans go in under their own permit, so the paperwork starts well before the pour. Once you say go, we apply as the licensed contractor and set up the inspections.
Our crew pours, I walk it
Covina allows construction work and equipment from 7 a.m. to 8 p.m. Monday through Saturday and none on Sundays or public holidays, so we plan the pour and the site work inside those hours. I'm on site with the crew while the work gets done, and when it's finished I walk the slab with you.
How we build a slab foundation, and the work around it
I read the soil report before anything else, because it decides whether a post-tensioned slab or a standard one makes sense for your lot. Then we lay out and set the forms, dig out the subgrade, which is the ground the slab sits on, and pack it firm instead of raking it level, since a base that's only raked settles with the dirt and takes the slab down with it. Steel goes in next, either rebar, the steel bars that hold the concrete together once it cracks, or post-tensioning tendons, steel cables pulled tight after the pour so the whole slab is squeezed. We check where the water will run so it drains away from the house, pour early in the day instead of in the midday heat that leaves a weak, dusty top, finish it and let it cure, the wait while the concrete gains strength before it takes a load. If the budget gets tight, the base is the last place I'll cut, because nobody sees it on day one and everybody sees it when it settles. When we pack up, the site's clean and the neighbors' driveways are clear.
Some jobs need more than a slab. When the building needs footings, stem walls or a full foundation planned as one piece, that's our foundation installation work, and we can do it alongside the slab. Small property owners who also need a lot paved by the same crew can look at our concrete parking lot building.
Get a written estimate for your slab foundation
We reply within 1 business day to set up a visit, and I come out to look at the lot myself. After that you get a free written estimate that spells out what's included. No pressure, no obligation.
Slab foundation questions from Covina owners
Does Covina require a soil report for a new foundation?
Yes, the city's building design criteria call for a foundation and soils investigation and report. Plan for it as one of the first steps, before the foundation design is final, because the slab gets designed around what the report finds.
What is the best way to choose between a post-tensioned slab and a standard slab?
Let the soil report decide, because the choice turns on how much the ground under your lot moves. One trade group calls post-tensioned slabs a cost-efficient answer for house foundations on shrink-swell soils, the kind that swell when wet and shrink when dry, since the squeeze in the slab resists the soil pulling at it. Whether your lot has that kind of soil is something only its soil report can tell you.
Will my new slab foundation crack?
Probably a little, yes, and I'd rather tell you that now than have it surprise you later. A concrete institute's design guide says crack-free and curl-free slabs aren't realistic even with the best design and proper construction, and that owners should be told some cracking and curling, the edges lifting slightly as the slab dries, is normal. At the estimate I'll tell you what to expect on your slab, and the prep and the steel are what keep those cracks tight.
How do I cut or drill into a post-tensioned slab safely later?
Have a qualified scanning contractor locate the tendons first, before anyone cuts or drills. Cutting a stressed tendon lets its force go all at once and can hurt people, so every later opening, for plumbing, a drain or an anchor bolt, gets planned around that scan. One company's guide notes that a standard reinforced slab is more forgiving of a hole in the wrong spot, which is worth weighing if you expect to remodel.
Can I pull the permit myself as an owner-builder in Covina?
Only if the property is your principal residence, according to the city's checklist, which follows current California law on owner-builder permits. Second homes and rentals don't qualify, so those owners hire a licensed contractor, and when we do the job, we apply for the permit as the contractor.
How much does a slab foundation cost in Covina?
The price comes down to your slab, your soil and your lot, so I give you a figure in writing after I've seen the site. Going post-tensioned or standard changes the steel and the labor, a lot that needs a lot of digging, fill or grading costs more to prep than one that's close to ready, and tight access where the truck can't reach the pour adds pumping. Call (626) 412-8842 and I'll come measure.
Other foundation and concrete work we do
Foundation installation
When your project needs footings, stem walls or a full foundation planned from the ground up, this covers the parts of the job a slab alone doesn't.
Concrete parking lot building
If you own a small rental or commercial property and the lot is cracked or holding water, we pour new parking lots with the same base prep.
Send us your address and soil report
Call (626) 412-8842 or send the form with your address and any soil report, because the approvals come before the pour and an early start keeps the rest of your build on track.