Foundation installation in Castro Valley CA - a base built for the soil under your home
Planning a home or addition on a Castro Valley lot? We size the footings to your soil and pour a base that carries the house.

What goes into a new foundation in Castro Valley?
Foundation installation in Castro Valley means forming, pouring and finishing the concrete footings that carry the weight of your house, and at P&J Castro Valley Concrete Company we plan them around your lot and the load they'll hold.
Most calls about a foundation come from people planning a new home, an addition or a rebuild, and the first question is cost. The price moves with the soil under your lot, the size of the house, whether the lot sits in a state-mapped hazard zone and whether the design needs an engineer, while the schedule turns more on design and county review than on the pour itself. Your estimate spells out what's included, so you can see which of those apply to you. Castro Valley falls under the county for permits, and when your job needs one we handle the application and set up the inspections.
- Licensed and insured.
- Free on-site estimates.
- We respond within 1 business day.
Foundations, footings and site concrete
How we handle foundation installation
A foundation depends on the lot it sits on, so the first thing I ask for is the address and any past permit files, because that lets us line up the design, an engineer if the job calls for one, and the county review in the right order before anyone digs. On site, our crew lays out the footprint, digs the footings to the size on the plans and checks the subgrade, the soil the concrete will rest on, since soft or loose spots there are what let a foundation settle later. We set the rebar, the steel that holds the concrete together as it carries the load, build the forms and pour in the cooler part of the day so the top doesn't dry out too fast. Then the concrete cures, which means it sits and gains strength before anything heavy goes on it. All that digging and prep gets buried on day one, and it's the first place people look to save money. I'd rather spend it there than anywhere else, because nothing poured on top can fix a bad base.
A foundation is a set of concrete footings working together, and we also pour footings on their own for additions, porches and walls that need a solid base. On commercial or multi-unit properties the same site plan often calls for paved parking, so we take on concrete parking lot building too and keep both on one schedule.
Why Castro Valley property owners call P&J Castro Valley Concrete Company for foundations
I do your estimate myself
I come out to look at the lot and write the estimate, and our crew lead runs the work on site with our own crew. The plan you agree to with me is the plan the crew builds from.
In business since 2017
I spent years scheduling crews, pumps and concrete deliveries for a busy construction company, then learned the trade from the finishers and started this business in 2017. That's why the order of work on your foundation is set before anyone shows up.
Licensed and insured for concrete
We're licensed and insured. The state licensing board describes a concrete contractor as one who forms, pours, places and finishes concrete, which covers every step of a foundation, so it's worth asking anyone you hire how they're licensed for it.
County planning questions settled early
The Alameda County Planning Department oversees new development in Castro Valley and enforces the county's zoning rules. We check with the county early, so zoning questions are settled before the foundation design is drawn.
A foundation starts with the lot, so have your address and any past county permit files ready when you call (510) 264-7164 or send us your project.
Get a foundation estimate for your lot
Send the form and we'll reply within one business day to set up a visit. I'll walk your lot and give you a free on-site estimate that spells out what's included, with no obligation to book.
- Licensed and insured.
- Free on-site estimates.
- We respond within 1 business day.
What happens after you call about a foundation in Castro Valley?
Call or send the form
Call (510) 264-7164 or send the form with your address and any past permit files you have. We get back to you to set up a time for me to come out.
I walk the lot with you
I look at the site, ask how you'll use the building and check what the lot needs before a design is set. Your estimate lists what's included, so you can see where the money goes before you decide.
We schedule, permit and pour
Once you say yes, I put the job on the schedule, sort out any permit steps and set up the inspections. Our crew lead runs the work on site from the dig through cleanup.
Foundation installation questions
How much does a new foundation cost in Castro Valley?
The usual figure for the area comes from San Francisco, where foundation installation runs about $10,000 to $35,000 per job. That's the market's range across the bay, not our price, and where your job lands depends on the soil, the size of the house, any hazard-zone design work and whether an engineer is involved.
Do I need a county permit for a foundation in Castro Valley, and where do I apply?
Building permits in Castro Valley come from the Alameda County Building Department, so ask the county whether your job needs one, and know that digging and grading the site can fall under a separate county grading permit. Owners apply, upload plans and structural calculations, the engineering math behind a design, schedule inspections and check status through the Alameda County Permit Portal.
Does the soil on my lot change the foundation design?
Yes, because footings are sized to how much weight the soil can hold and the load the house puts on it, so the same house can need bigger footings on one lot than another. One soil data site counts 37% of Alameda County's soil area as expansive clay, the kind that swells when wet and shrinks when dry, though that's a county-wide figure and doesn't describe any single lot. If your lot is inside a state-mapped liquefaction zone, where wet soil can lose strength in a quake, or a landslide zone, the soil or slope has to be investigated and countermeasures built into the design, and the county has to use those zones when it permits the work.
Who can pour a foundation in California?
A licensed concrete contractor can, and a general building contractor can take on the concrete work if it holds the matching license class or hires a licensed specialty contractor for it. If a general contractor is running your build, ask which of those covers your foundation.
What is the best way to earthquake retrofit an older foundation?
Start with your home's type, because it decides whether a prescriptive plan or an engineered plan fits. A prescriptive plan is laid out in standard text and tables that a contractor can generally follow directly, but it only fits some building types and layouts, while an engineered plan from an engineer or architect takes more time and costs more.
How do I find old building permits for my house in Castro Valley?
You can ask Alameda County to let you review its historical building permit files, which collect all the building permits issued on the property. Requesting them early gives us a record of past permitted work on the home before design starts.
Work that often goes with foundation installation
Concrete footings
Additions, porch posts and garden walls each need footings sized for their own load, and we pour them as a separate job when that's all you need.
Concrete parking lot building
Building on a commercial or multi-unit property usually means parking too, and pouring the lot with the foundation work keeps the site plan in one crew's hands.
