Foundation repair, concrete repair and crawl space repair in Ontario, CA
Ontario has about 51,760 households and 31,016 detached single family homes, and Foundation, concrete and crawl space repair is what we are called out for here. The crew comes from our Lake Elsinore office, about 35 minutes away.
Let's take the first step toward solid ground.
A local specialist will evaluate your foundation, walk you through the findings, and send a clear estimate. No cost, no pressure.
Lake Elsinore office
445 Birch St
Lake Elsinore, CA 92530
Phone
(877) 360-9227Hours
Monday to Friday, 7:00 AM to 6:30 PM
Getting to you
About 35 minutes from the office, 29 miles.
About Ontario
What Ontario looks like from the truck
Ontario lies inside San Bernardino County in California. Census figures put the town at about 176,326 residents and 51,760 households. The town runs 56 percent owner occupied, with 31,016 detached single family homes in the mix.
Work here is served from the Lake Elsinore office, about 35 minutes away at 29 miles. San Bernardino County carries 516,095 detached single family homes in total, 62 percent owner occupied. This town accounts for about 7 percent of the county's housing. The county around it counts about 2,187,816 residents across 738,535 housing units. Half the housing predates 1979, and the 1980s were the busiest building years at 11,419 homes. A median home value of $513,000 and a median household income of $78,070 is what the American Community Survey records. The split is 28,810 owner occupied to 22,950 rented. Roughly 54 percent of the housing here, 28,171 homes, went up before 1980, when footing drains and grade separations were not what they are now.
Population and housing figures: American Community Survey, by way of the Signature Media market data set.
What we fix
Foundation problems we see in Ontario
Sticking Doors and Windows
Ground under Ontario is mapped sand, with a low shrink swell rating. Soil like that tends to compress rather than swell, which is why what we find here is usually settlement rather than heave.
What this looks likeCracked Bricks
The pre 1980 stock in Ontario runs to 28,171 homes, which is where we most often find drainage that was never engineered.
What this looks likeRaised Foundation Settlement
The typical Ontario house dates to 1979, so the ground under it has been carrying the house, and taking in irrigation and storm water, ever since.
What this looks likeLocal conditions
Ontario's soil, weather and housing
- Precipitation a year
- 9.4 in
Based on NOAA 1991 to 2020 climate normals for Riverside Municipal Airport, about 11 miles away.
The soil this town is built on
Soil mapping within Ontario returns Delhi at about 60 percent of the survey, with Tujunga alongside it. By texture that survey runs 100 percent sand. The weighted linear extensibility figure, which is how much the soil changes volume between wet and dry, sits at 1.5 percent, a low shrink swell rating.
The housing stock
Most of what we walk into here was built in the 1980s, 11,419 homes, around a median build year of 1979. The 28,171 homes finished before 1980 are the ones where drainage was rarely engineered and backfill was rarely compacted. 22 percent of the housing here, 11,193 units, sits in buildings of five or more, so a fair share of local work is on shared structures rather than single family homes. Of the owner occupied homes, 73 percent carry a mortgage.
Soil survey: USDA NRCS Soil Data Access (SSURGO), sdmdataaccess.nrcs.usda.gov. Climate: NOAA U.S. Climate Normals 1991 to 2020, RIVERSIDE MUNI AP (USW00003171), retrieved October 18, 2026.
Around Ontario: American Career College Ontario Campus, Bellevue Memorial Park, Cucamonga-Guasti Regional Park, De Anza Park and iFLY Indoor Skydiving - Ontario are all inside the city limits. They sit between 29 and 33 miles from our Lake Elsinore office.
ZIP codes inside Ontario: 91710, 91730, 91761, 91762, 91763, 91764, 91786, 92337.
Services available
Foundation repair near you in Ontario
Foundation Repair in Ontario
Helical piers, push piers, crack repair, and the diagnosis that decides between them.
Concrete Repair in Ontario
Lifting, leveling and crack repair for driveways, patios, walkways and pool decks.
Crawl Space Repair in Ontario
Structural repair under a raised foundation: posts, pads, beams and sagging floors.
One visit covers all of it: floor elevation measurements, clear findings, a written estimate.
Google reviews
What California customers say
I am so grateful I contacted this company. Jim met with us today and he was on time, professional, funny, thorough, and extremely trustworthy.
We had such a great experience with everyone at Dalinghaus and they did such professional work! We have a cabin with a raised CMU block foundation that had one large crack and several smaller cracks. Dalinghaus installed 2 helical piers, 10 ft. deep, to stabilize the foundation corner with the large crack and used a carbon fiber foundation wrap on all the cracks. We are very pleased with the results.
An amazing group of committed sales and supporting staff. They performed exactly as they advised on how the process was to go. Each and every member gave 100% towards repairing our foundation and making sure we were satisified . My compliments to Tom Bartholomew (Sales) and the Team that stood behind him..
The crew
Some of the crew members who work on jobs like yours
The same company schedules the evaluation, runs the install, and answers a warranty call later.
Lake Elsinore office
Where the crew comes from
Work here is dispatched from our Lake Elsinore office, 29 miles away, about 35 minutes. You will find it at 445 Birch St, Lake Elsinore, CA 92530.
- 445 Birch St, Lake Elsinore, CA 92530
- (877) 360-9227
- Monday to Friday, 7:00 AM to 6:30 PM
What Ontario homeowners ask
Don't see your question here? Our team is happy to help. Reach out anytime.
Ontario is worked out of our Lake Elsinore, CA office. It is 29 miles from the middle of town, about 35 minutes on the road. The office is at 445 Birch St, Lake Elsinore, CA 92530.
Get a free evaluation. We will come and look.
A Dalinghaus specialist evaluates your foundation in Ontario, takes floor elevation measurements, walks you through what they found, and sends a clear itemized repair estimate. No pressure.
Care and expertise from a team that's been doing this since 2011.
Dalinghaus Foundation Repair is locally owned and operated, with crews dedicated exclusively to foundation, concrete, and crawl space work across California, Arizona, and Nevada.
Foundation repair, concrete leveling, and crawl space repair are our entire focus. Not a sideline.
More than 2,000 projects on the clay and desert soils of California, Arizona, and Nevada since 2011.
CSLB License #983851 in California, ROC #330307 in Arizona, and License #0089738 in Nevada. Look us up with the state before we ever set foot on your property.
Warranty terms come in writing with every proposal, and the terms that apply to your job are stated in that job's paperwork. Ask your project specialist during the free evaluation.
Take the first step toward a healthy home.
A straightforward path from free evaluation to completed repairs.
Schedule your free evaluation.
A local specialist visits your home, evaluates the foundation, and answers your questions on site. No cost, no obligation.
Receive an estimate based on your needs.
We provide a clear, written estimate with a scope of work tailored to your home's specific issues.
Get your repairs.
Our crews complete the work on schedule, with the findings and scope in writing from the first visit.
More than 1,000 Google reviews across our offices, averaging 4.9 stars.
A 4.9-star average across Google, with verified reviews from the homeowners we work for.
Start with a free evaluation.
Share a few details and a local specialist will follow up as soon as possible to set your evaluation.
- A local foundation specialist on site
- A complete walk-through of the findings
- A clear written estimate at no cost
- No obligation, no pressure