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Serving Ontario, CA and surrounding areas. (909) 738-1803
OT Ontario Masonry is your local masonry contractor in Ontario, CA, handling brick repair, retaining walls, and masonry restoration for homeowners across the city. We have been serving Ontario since 2020, and every project we take on is permitted, inspected, and built to hold up against the Inland Empire climate.
Ontario has a large stock of mid-century homes where original brick veneers and block walls are now 50 to 70 years old. Mortar joints from that era are failing across the city, letting water in and accelerating surface damage. Our masonry restoration service brings aging brick and stone back to a solid, watertight condition without replacing more material than necessary.
Ontario sits on clay-heavy soil that swells with winter rain and shrinks in summer heat - that cycle is a leading cause of foundation cracking in the area. We assess the underlying soil conditions before recommending a repair method, so we are fixing the cause, not just filling the visible crack.
Lots in older Ontario neighborhoods often have grade changes that need a properly engineered wall to hold soil in place. Block and concrete retaining walls we build are permitted through the city and designed to handle the soil movement common in Inland Empire clay conditions.
Ontario summers regularly push past 100 degrees, and that kind of heat - season after season - cracks mortar and spalls brick surfaces faster than in cooler climates. We match replacement brick to existing color and texture so the repair blends in rather than standing out.
Block wall fencing is common throughout Ontario on properties built in the 1960s and 1970s. Many of these walls are at or past their service life and show horizontal cracks from soil pressure. We rebuild sections or full walls to current city code, with permits and inspections included.
The brief but real wet season Ontario gets every winter pushes moisture into open mortar joints on chimneys, garden walls, and exterior brick. Tuckpointing removes the deteriorated mortar and packs in fresh material, closing the path water uses to get behind the surface and cause deeper damage.
Ontario sits in the heart of the Inland Empire, where the climate swings between very hot, dry summers and brief but intense winter rainstorms. That cycle is hard on masonry. Heat opens small cracks in mortar and brick during the dry months, and then winter rain finds those openings and drives moisture deep into the wall. The clay soils common across this part of San Bernardino County make things worse - they expand when wet and contract when dry, putting constant stress on foundations, retaining walls, and any block structure sitting close to the ground.
The city also has a wide range of housing ages. Near historic Euclid Avenue and the older downtown core, you find homes built in the 1920s through 1950s with original brick and block that has never been properly restored. Moving outward, mid-century ranch homes from the 1960s and 1970s make up a large portion of the stock, and many of these have original concrete driveways and block fences that are well past their expected service life. Newer subdivisions on the south and east sides are entering the 25-to-30-year range where exterior coatings and mortar joints start to need attention. Each of these building types needs a different approach - and a contractor who only knows one is going to miss what the other requires.
Our crew has been working in Ontario since 2020, pulling permits through the City of Ontario Building and Safety Division and working on properties across every part of the city. The City of Ontario Building and Safety Division requires permits for structural masonry work, and we handle the permit application and inspection coordination on every qualifying job - you do not have to manage that process yourself.
Ontario covers a lot of ground. The older neighborhoods near Euclid Avenue - listed on the National Register of Historic Places - have homes with original stucco and brick that needs careful matching. Properties near Ontario International Airport tend to be mid-century stock with concrete block fencing that has seen decades of heat and soil movement. The newer subdivisions off the 10 freeway near Ontario Mills have their own set of issues - mostly stucco cracking and paver settling. We work on all three, and we know which problems to look for on each type of property.
We also serve the surrounding communities regularly. If you are looking for masonry work in Montclair, just to the west, or in Rancho Cucamonga to the north, we cover those areas as well. Same crew, same standards.
Reach us by phone or through the contact form. We respond within 1 business day and will schedule an on-site visit at a time that works for you.
A crew member walks the property with you, identifies the problem and its cause, and gives you a written estimate on the spot. No obligation, no cost - and cost anxiety is addressed here, not buried in the invoice later.
Once you approve the scope, we pull any required permits from the City of Ontario and schedule the work. Most jobs are completed in one to three days. You do not need to be present for most exterior work.
When the work is done, we walk through the completed area with you and answer any questions. If something is not right, we fix it before we leave. You get copies of all permits and inspection records for your files.
We serve homeowners all across Ontario, CA. Call us to schedule a free on-site estimate, or fill out the form and we will get back to you within 1 business day. No pressure, no obligation.
(909) 738-1803Ontario is a city of about 185,000 people in San Bernardino County, roughly 35 miles east of downtown Los Angeles and at the center of one of the fastest-growing regions in California. The city has a recognizable historic core near Euclid Avenue - a grand tree-lined boulevard listed on the National Register of Historic Places - surrounded by older Craftsman bungalows and Spanish Colonial Revival homes from the 1920s through 1940s. Moving outward, the housing stock shifts to the mid-century ranch homes common in postwar Southern California, then to the stucco tract subdivisions that filled in the southern and eastern edges of the city through the 1990s and 2000s. The result is a city where the property types on one block can look and behave very differently from the next.
Ontario is also home to one of the largest inland logistics hubs in the country, built around Ontario International Airport, and well-known to Inland Empire residents as the home of Ontario Mills. The city is bordered by Montclair to the west - a smaller city with its own distinct housing stock - and by Chino to the south, where newer master-planned communities have their own masonry needs. We work across all of these communities and understand the local conditions that affect masonry in each one.
Build strong retaining walls that hold soil and prevent erosion.
Learn MoreBuild reliable block foundations engineered for lasting performance.
Learn MoreWhether your block wall is cracking, your brick needs repointing, or you need a retaining wall built right, OT Ontario Masonry is ready to help. We are local, licensed, and available across Ontario, CA.