Foundation repair
When a foundation wall shows stair-step cracks or a corner has dropped, we find what moved it, usually water or soft ground under the footing, before we patch anything.
Masonry contractor in Clayton, CA - Brick, block and stone that holds up
Mastercraft Antioch Masonry and Concrete is a masonry contractor based in Antioch, CA, and we work on homes in Clayton. We repair brick, chimneys and mortar joints, and we build walls, walkways and paver driveways.
In Clayton, Mastercraft Antioch Masonry and Concrete fixes what's cracking and builds what's missing. That covers chimney and fireplace repair, repointing worn mortar, retaining and block walls, walkways, paver driveways and outdoor kitchens. I come out to every job myself, so the person who looks at your wall is the one standing there when it gets built.
Brick, block and stone work around Clayton homes
Most calls start the same way. A homeowner sees a crack running through a block wall, a chimney dropping mortar, or a path that's heaved and started tripping people. Before I price anything, I want to know why it happened, because a crack is usually the wall telling you about water, a weak base or a footing that moved. Fix that first and the repair lasts.
We do the same work across the cities around Antioch, and Clayton sits right in that circle, with Concord next door. The same crew that builds a wall in one city builds it in the next, set on the same kind of footing and drained the same way. If you're not sure we cover your address, call and ask.
- Based in
- Antioch, CA 94509
- Hours
- Mon–Fri: 8 AM–11 PM, Sat–Sun: 7 AM–11 PM
Masonry services we do for Clayton homes
Chimney repair
For a chimney with loose bricks, missing mortar or a cracked crown, the concrete cap on top, we rebuild the damaged part so water stops getting inside.
Tuckpointing
When mortar joints have gone soft and sandy, we grind out the worn mortar and pack in new joints colored to match the rest of the wall.
Brick repair
Cracked, flaking or loose bricks get cut out and replaced one at a time, and we look for the reason they failed so the new ones don't follow.
Driveway pavers
A paver driveway makes sense when the old slab is cracked past saving, and because pavers sit on a packed base, one broken paver can be lifted and replaced.
Retaining wall construction
If a slope is creeping into your yard or an old wall is leaning, we build retaining walls with drainage behind them so water can't push them over.
Masonry restoration
For an older brick or stone face that's stained, worn or patched badly, we clean it, repair it and match the mortar so it reads as one wall again.
Fireplace installation
Adding a fireplace indoors or out means building the firebox, the lined box that takes the heat, and the flue properly, so we settle placement with you first.
Stone veneer installation
Stone veneer, thin stone set over a wall, can dress up a plain foundation, column or fireplace, as long as water has a way out from behind it.
Concrete block walls
Block walls work for privacy along a property line or around a yard, and we set them on a proper footing with steel and grout where the wall needs it.
Foundation block wall installation
For an addition, a garage or a crawl-space wall, we lay foundation block on a footing sized for the load, then fill and reinforce it before anything sits on top.
Outdoor kitchen masonry
An outdoor kitchen built from block, brick or stone gives you a counter and grill base that doesn't burn, which plenty of people around Clayton care about.
Walkway construction
When the path to your front door has heaved or cracked, we dig it out, pack a solid base and lay brick, stone or pavers that sit flat underfoot.
Brick wall installation
New garden walls, planters and walls along a drive get a real footing and small drain gaps at the base, so water gets out instead of cracking the brick.
Stone masonry
Natural stone suits steps, wall caps, fire pits and mortared or dry-laid walls, and we pick and fit each stone so the wall carries its weight evenly.
Brick pointing
If only a few joints are cracked or open, brick pointing fills them with fresh mortar, and that's often a smaller job than people expect when they call.
Get a free on-site estimate for your Clayton home
Send the form and we'll reply within one business day, and most of the time it's me getting back to you. I'll come out to your Clayton property, look at the job myself and give you a written estimate that spells out what we'll do and what we won't. There's no obligation and no pressure to book.
(925) 503-1025Working in Clayton and what shapes your job
Clayton is an incorporated city in Contra Costa County, and licensing for anyone doing masonry here comes from the state. The Contractors State License Board licenses and regulates contractors across California, Clayton included, so check that whoever you hire holds a state license before they start. We're licensed and insured.
When a job needs a permit, we pull it with the city or county and line up the inspections. If you're not sure whether yours does, we check with the right office before work starts. That step, plus getting materials delivered and letting mortar and concrete cure, usually sets the schedule more than the laying does.
What moves the price is mostly the size of the job, what it's built from and how hard it is to reach. A tall wall with drainage behind it, natural stone instead of block, old work that has to come out first, or a back yard we can only reach by wheelbarrow all add to it. My written estimate spells those out for your job, the same way it does from here out to Discovery Bay.
Why Clayton homeowners call our crew
I started out mixing mortar and hauling block on a small crew long before anyone let me lay a brick, and I opened this business in Antioch in 2023. I still come out to look at every job myself, and I'm on site with our crew when the work gets done, so nothing gets lost between the estimate and the wall.
I'd rather fix why something failed than cover it up, and I'll tell you when the truth is a smaller job, like repointing a few joints instead of rebuilding a wall. We back it with satisfaction guaranteed on every job. Call (925) 503-1025 or use the estimate form to set up a visit.
What Clayton's fire maps and state rules mean here
A few things beyond the wall itself affect masonry work in Clayton, from the fire hazard map your lot may sit on to the state rules on how a contractor gets paid.
Your lot on the fire map
The State Fire Marshal's map for Clayton marks Fire Hazard Severity Zones, which rate how severe the fire hazard is in each area. Find your own property on it before you plan anything close to the house. It helps when you're choosing between a wood fence and a block wall, or deciding where a fire pit or outdoor kitchen should go.
Masonry that doesn't burn
Brick, block, concrete and stone don't catch fire, which is a big reason people near mapped zones pick them for walls, planters and outdoor kitchens. The parts you don't see matter too, so on a fire pit or outdoor kitchen we keep wood out of the build itself. That way the whole structure, not just the face, holds up to heat.
Payments that follow the work
Under the state board's rules for home improvement jobs, any payment after the down payment has to be listed clearly in the contract. Each one has to match the value of work already finished or materials already delivered to your home. That works in your favor, because what you've paid tracks what you can see standing in your yard.
Old patches we run into
A lot of the brick we look at on homes around here has been patched before with hard gray mortar that doesn't match. That mortar is often stronger than the brick, so the brick cracks around it instead of the joint. We cut those patches out and repoint with mortar that suits the wall, so the next crack doesn't start where the last fix ended.
Masonry questions from Clayton homeowners
How much does masonry work cost in Clayton, CA?
Your cost comes down to the size of the job, the material and how hard the spot is to reach, so I price it once I've seen it. Repointing a few joints is a small job, while a tall retaining wall with drainage is a big one. I'll come look and put the price in writing for you.
Who licenses contractors who work in Clayton, CA?
The state licensing board licenses contractors for all of California, and that covers Clayton because it's a California city. To get a license, an applicant has to pass two exams, one on law and business and one on the trade, though the board can waive the exams under certain conditions.
How much can a contractor ask for up front in California?
A contractor's down payment on a home improvement job can be no more than $1,000 or 10 percent of the contract price, whichever is less. That's the state board's rule, and it applies to every home improvement project. Payments after that have to follow the work, as the payments card above explains.
When did the updated fire hazard maps take effect in Clayton?
The updated Fire Hazard Severity Zone maps took effect July 10, 2025, after the Contra Costa County Fire Protection District adopted them to match the state's classifications. You can find your own lot on the State Fire Marshal map for Clayton before you plan a wall, fire pit or outdoor kitchen.
How do I get my yard ready for a masonry crew?
Clear a path from the street to the work area and move cars, pots and furniture out of the way, since we bring in block, stone and mortar by the pallet and wheelbarrow. Tell us where sprinkler lines run, and keep kids and dogs clear of fresh mortar until it sets.
How long does a masonry project take in Clayton?
Most of the time on a masonry job goes to the steps around the laying, not the laying itself. A permit and inspections when the job needs them, getting materials delivered, and letting mortar and concrete cure before anything loads the wall all set the pace. I'll walk you through the order for your job when I come out.
Ask about that crack before it grows
Call (925) 503-1025 or use the estimate form to ask about your Clayton home, because a crack caught early is usually a repair instead of a rebuild.