Masonry Contractor in Yorba Linda - Walls and Stonework Built for Sloped Yards
Keystone Corona Masonry and Concrete is a masonry contractor working in Yorba Linda, building and repairing block walls, retaining walls, brick and stone veneer, with new work matched to what's already on your house.

- Licensed and fully insured.
- Free estimates at your property.
- Expect a reply within 1 business day.
Services in Yorba Linda, CA
Retaining wall construction
Sloped backyards here often need a wall where the yard meets the hill. We build block retaining walls on solid footings with drainage behind them.
Concrete block walls
Many yards here are lined with block walls, and older runs crack or lean as footings settle. We repair the damaged sections or rebuild the run.
Stone veneer installation
Stone on entries and columns is common on houses here, and owners often want more of it. Our stone veneer installation matches what's already on the house.
Fireplace installation
Large backyards here suit an outdoor fireplace that anchors a patio. We build them in block with brick or stone faces chosen to match the house.
Outdoor kitchen masonry
Patios here often have room for a built-in grill. We build the block base and finish it in stone or brick, leaving openings for gas and power.
Tuckpointing
Brick planters and wall caps on older houses here lose mortar first. We cut out the worn joints and repoint them in mortar matched to the old color.
Yorba Linda, CA properties and local conditions
Much of Yorba Linda sits on slopes, and on a hillside yard the soil behind a wall keeps trying to move downhill, getting heavier when water soaks into it. That's why so many backyards here have retaining walls stepping down to a flat patio, and why the ones that fail usually lean at the top or bulge in the middle. When we build here, we size the footing for the slope, put gravel and a drain behind the block so water has a way out, and step the wall down with the grade instead of fighting it. On repairs I look at the drainage first, because a new wall with the same wet soil behind it ends up the same way.
A lot of the houses here have been standing for decades, and their original block walls, brick planters and wall caps are where the mortar wears out first. We match the block size, the face and the mortar color to what's there, so a repaired section doesn't stand out from the rest of the wall.
Working in Yorba Linda: permits, schedules and what sets the price
When a job here needs a permit, it comes from the city's Building Division, whose permit list covers fences and fireplaces along with new buildings and additions, so a taller block wall or a new fireplace often goes through that office. The city now books appointments in place of walk-in service for over-the-counter plan reviews and code consultations, so on a permit job the paperwork usually sets the pace more than the building does, and we get on the city's calendar early. We're licensed and fully insured, and when a job needs a permit we pull it, set up the inspections and meet the inspector on site, and if we're not sure what applies we ask the city before we start. The price moves with the wall's height and length, how deep the footing has to go and whether we're matching old block or stone, and I put all of it in a written estimate so you can see what the work includes.
We come up from Corona on the 91, and on the hill streets here the first question is often how to get block and concrete into the backyard, through a side gate, over a wall or by hand down a slope. Narrow side yards and steep driveways mean more carrying, which adds to the cost, so I look at access during the estimate instead of guessing. We do the same kind of hillside wall work over in Chino Hills.
A free written estimate for your Yorba Linda project
Send us your Yorba Linda project and we'll reply within one business day, by phone or by message, whichever way you reached us. I'll come out to your property, walk the job with you and give you a free written estimate, with no obligation to go ahead.
(951) 393-1203How a masonry job in Yorba Linda goes from your call to the finished wall
Call or send your details
Call (951) 393-1203 or use the form, and tell us what you're thinking of building or fixing and whether the yard slopes. We'll set a time for me to come out to your house.
I walk the job with you
I look at the ground, the existing walls and the way into the backyard, then write the estimate myself so you can see what the work includes before you decide anything. It helps if you're home, since height, finish and where the wall goes are easier to settle standing in the yard.
We handle permits and build
If the job needs a permit, we apply for it, and the city gives an online application that needs plan review 15 working days, with the same again for a resubmittal. Once it's issued, our crew does the work and I check it as it goes.
We walk the finished job
Before we pack up, I walk the finished job with you so you can see the joints, the caps and where the drainage comes out. We haul off the leftover block and soil and leave the yard swept.
Frequently asked questions
Do I need a permit to build a block wall in Yorba Linda?
A masonry or concrete wall over 3 feet tall generally needs a building permit, because the city's posted exemption list only lets one go without a permit up to that height. The height counts from the lowest finished grade beside the wall, the city's zoning height limits still apply, and even a short wall has to meet the building codes. On a sloped lot the low side can put a wall over the line, so I measure it during the estimate.
Does a retaining wall need a permit in Yorba Linda?
A retaining wall up to 4 feet tall, counting the footing, needs no permit on the city's list, unless it holds up extra weight such as a driveway or more slope above it, or the soil behind it is steeper than 2 to 1, about one foot up for every two feet back. Because the footing counts, a wall that shows only 3 feet or so above ground can still need a permit. Hillside yards here run into both of those often, so we check before we dig.
Does a new fireplace need a permit in Yorba Linda?
Plan on a permit, because fireplaces are on the list of work the city's Building Division issues permits for. We take care of it as part of the job, the same way we do for a wall that needs one, and the review time goes into the schedule I give you.
How do I apply for a building permit online in Yorba Linda?
The city takes online permit submittals only for set projects, such as heating and air units, electrical panel upgrades, EV chargers, gas and water re-piping, and like-for-like re-roofs. If your job isn't on that list, we work out how to apply when we take the permit on, so you don't have to.
How much does a block wall cost in Yorba Linda?
The price comes down to what the wall has to do, how big it is and what it's faced with. A plain block garden wall with a simple cap costs the least, while a taller retaining wall with more steel and grout, split-face block or stone veneer, or tearing out an old wall first all raise it. Your written estimate lists each part, so you can compare it with another bid line by line.
What causes block walls to crack on sloped yards in Yorba Linda?
Most cracks come from the ground moving under or behind the wall, usually because water collects behind it or the footing was too small for the slope. A stair-step crack along the mortar joints often means settling, while a wall leaning toward the low side usually means the soil behind it is pushing harder than the wall was built for. I can tell more once the old mortar comes out, and that decides whether we repair a section or rebuild.
About Yorba Linda, CA
Yorba Linda is mostly homes, from older tracts on the flatter ground to newer houses on bigger lots that climb into the hills. Many of those lots back onto the city's trails, which are built for horses as well as hikers and bikers, and yards along them often have long rear walls and gates that take more knocks than a typical side wall.
It's a quieter, more residential place than Chino, a short drive north, with less flat ground and more slope to work around. Most of what we do here comes back to that slope, setting walls that sit right on a hill and drain, and making repairs match a house that's been there a while.
Explore the services
Corona, CA
Start your Yorba Linda masonry project today
Call (951) 393-1203 or send your project details through the form, because a cracked joint or a loose cap is a smaller repair caught now than after water has worked in behind it.




