Foundation block wall installation in Torrance CA - a wall built to keep water out
Planning a new foundation and worried about soil and water pressing on the wall? We build, seal and backfill block walls that hold.
- Licensed and insured.
- Free estimates at your property.
- We reply within 1 business day.
What goes into building a block foundation wall?
Foundation block wall installation in Torrance means building a concrete block wall below ground to hold back the soil around your house, sealing its outside face against water, and putting the soil back once the wall is ready to take the load.
Most people who call about this are adding a basement or crawlspace, putting an addition on a new foundation, or building a wall that has to keep the dirt where it is. The price mostly follows how much wall we build, how much soil it holds back and which water barrier your site needs, and the schedule mostly turns on the permit steps and on when the floor framing goes on above it. I give you a written estimate with the scope spelled out, so you see your own numbers before anything is decided. If you've got an existing wall that's cracked or leaning, that's foundation repair, which is a different conversation.
How we build and seal a foundation block wall
Below ground, keeping water out is the whole job, so before anything else I look at how your site drains, because that decides whether the wall gets a coating or a sheet membrane. Then we dig out, set the footing and lay the block, with steel and grout where the soil load calls for it. The outside face gets parging, a smooth cement base coat, before any dampproofing goes on, since bare block is too rough and porous to seal well. The drainage goes in at the footing, and we brace the wall or wait for the floor framing before the soil goes back against it, because a new wall with nothing holding the top is just a lever.
Once the dig is closed, that side of the house is usually a mess of fresh soil, so it's a sensible time to plan what goes on top. We can lay a new walkway along the finished wall, or build the base and counters for outdoor kitchen masonry on the patio side while the crew and materials are already here.
Short walls for a crawlspace
These suit a house or addition that sits a few courses up over a crawlspace, where the soil against the wall is shallow. Less soil means less pressure, so this is usually the simpler and less costly of the two.
Deeper walls for a basement or slope
These suit a basement, a below-grade room or a lot where the ground sits high on one side. More soil pressing on the wall changes how it's built and makes the drainage and the water barrier matter a lot more.
Building foundation block walls in Torrance
Torrance takes plan reviews and permit submittals electronically now, with no paper plans accepted, and it wants an approved Zoning Screening before a permit application goes in. Whether your wall needs a permit is something we confirm with the city's building and safety office for your address. If it does, the screening comes first, we handle the application from there, and we tell you what we learn before any work starts.
We're based in Torrance and work in many of the cities around it, and a lot of houses here sit on tight lots with a fence or a neighbor's driveway a few feet from the dig. So we plan where the soil goes before the first shovel, and we look at where your downspouts and the next yard over send water. We see the same tight lots on jobs in Redondo Beach and Lomita.
Why Torrance homeowners call AJ Torrance Concrete and Masonry for foundation walls
I look at your site myself
I come out to see the job before you get a number, and most of that visit goes to where the water on your lot ends up. I spent years at a masonry supply yard hearing how block jobs went after the trucks left, so I know which shortcuts come back to bite.
Our own crew, with a lead mason
Our own crew builds the wall with a lead mason running the site, and I stop by to check on it as it goes up. We've worked this way since 2013, and it means the person who quoted your wall actually sees it built.
Licensed and insured for this work
We're licensed and insured. The state contractor board's masonry classification covers laying block for load-bearing walls, so ask anyone bidding on yours which license they carry.
We check the expansive soil zone
Torrance keeps footing details for an Expansive Soil Study Zone among its building standards, so I find out whether your lot falls inside it before we plan the footing. Soil that swells when it's wet pushes back on a wall, and that's worth knowing before the first block goes down.
If you're planning a wall below ground, request an estimate or call (424) 318-3093 and I'll come take a look.
Request a quoteGet a written estimate for your foundation block wall
We reply within 1 business day to set a time for me to come out. The estimate is free, done at your property and obligation-free, and you get it in writing with the scope spelled out. Satisfaction guaranteed.
What happens after you call about a foundation wall in Torrance?
Call or send a request
Call (424) 318-3093 or use the form, and we get back to you to set a time for me to come out. Tell us what the wall is for and whether you've seen water on the lot.
I walk the site with you
I look at the dig, the drainage and how much soil the wall will hold back, then send a written estimate with the scope spelled out. That way the price you see is for the wall your site actually needs, not a guess.
Permits first, then the build
If you hire us, we take care of any permit steps with the city or county office that covers your address. Then our crew builds, seals and backfills the wall.
I check it before we finish
I look the wall over before we call it done. I'd rather catch something while the barrier is still showing than after it's under soil.
Frequently asked questions
How much does it cost to build a foundation block wall in Torrance?
The cost comes down to the size of the wall, how much soil it holds back and how it gets sealed, so a fair number comes from a site visit. A sheet membrane usually costs more than a coating, steel adds to a wall that needs it, and a tight side yard where we dig by hand takes longer than open ground. Your written estimate lists each of those for your wall.
Does a concrete block foundation wall need rebar?
Not always. Block foundation walls can be built without steel, but steel may be required when the wall holds back a large amount of soil. I size that up on the site visit, because how much backfill presses on your wall shapes how we build it.
Should I dampproof or waterproof my block foundation wall?
Dampproof when the soil around the wall drains freely, and waterproof when water can collect and push against the wall from outside. Codes usually draw the line in the same place, and dampproofing works where water drains through gravel backfill into a drain below. If you're torn, a sheet membrane depends less on workmanship than a coating and usually holds up better if the wall moves a little, since a coating is only as good as whoever held the brush, which explains a few basements I've been called to look at.
What causes water to come through a block foundation wall?
Usually it's water sitting in the soil against the wall with nowhere to go, pushing on a barrier that wasn't built for that much. A layer of gravel against the wall lets water drop to the footing, where a perforated drain pipe carries it away from the house. That drain matters as much as whatever goes on the block.
What is the best backfill for a new foundation wall?
Free-draining granular material, like gravel or sandy fill, with no expansive clay or debris mixed in. We keep heavy equipment back from the wall and place and compact the backfill in layers, so no single pass loads up fresh block.
Who is allowed to build a foundation wall in California?
A licensed contractor, in most cases, because the state's exemption for unlicensed small jobs only applies when the work needs no permit and the person doing it employs no one. Anyone showing up with a crew doesn't fit that exemption, so ask for the license before anything else.
Other masonry work around a new foundation
Walkway construction
Once a foundation wall is backfilled, the ground beside the house needs a surface again, and a walkway gives you a solid path instead of loose soil tracking indoors.
Outdoor kitchen masonry
If the new foundation sits beside a patio or yard you want to cook in, a block or stone kitchen base built by the same crew keeps the masonry consistent.
Torrance, CA
Book a site visit for your foundation wall
Have your address, what the wall is for and anything you've noticed about water or soil on the lot ready, and we can plan the visit around it.