Concrete Driveway Building
A driveway poured once at the width the house parks now, every old lane, strip and pad out, one base under it and no seam for water to find.
Concrete Contractor in Costa Mesa, CA
Driveways, garage floors, slab foundations and patios on the sandy mesa Costa Mesa sits on, Eastside to Westside. Call for a free estimate, measured at the property and written on the spot.
5.0 Stars Rated by our customers · Google, Facebook and the BBB
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Sixteen Concrete Services for Costa Mesa Homes and Rentals
A cracked driveway on a State Streets ranch house, a garage floor that sweats, a slab for a backyard unit or a walk for a fourplex that never had one: Harbor Costa Mesa Concrete handles each as its own job, on its own page, and the driveway page is where most Costa Mesa readers start.
Concrete Patio Construction
A patio poured a step below the sliding door and pitched to the side yard, so a storm leaves by the swale and never stands at the sill.
Stamped Concrete Services
A patterned slab poured once on packed sand, its joints hidden in the grout lines and its sealer put on only after the damp has left it.
Concrete Sidewalk Building
A walk on packed sand held at the edge, graded to the gutter and poured 6 inches where cars cross, to the City's standard in the parkway.
Garage Floor Concrete
Garage floor broken into patches, or dusting? One slab poured whole over compacted sand and a taped vapor barrier, 4 inches under cars.
Decorative Concrete
Plain slab slick in the fog, or color worn to gray? Exposed aggregate, salt and sand finishes with pigment through the batch, gripping wet.
Concrete Retaining Walls
A wall footed on compacted sand, formed on both faces and backfilled in lifts, because a cut in the mesa will not stand to be poured against.
Concrete Floor Installation
An indoor floor poured over a taped barrier on compacted sand and finished dense and sealed, so the marine air has nothing to soak into.
Concrete Pool Decks
A deck that keeps its grip on a gray morning, broomed across the walk, pitched off the coping to a drain and jointed clear of the shell.
Concrete Steps Construction
A flight poured with every riser the same height, treads broomed for a wet morning, and pinned to the house so it cannot drop off the sill.
Slab Foundation Building
The footing and floor of a backyard unit or a new room poured as one slab, set out to the setback line and bolted to the framer's plan.
Foundation Installation
The footing, stem wall, piers and hold-downs a new house or a second story stands on, the footing widened for the load and the wall kept dry.
Concrete Parking Lot Building
A new lot built for the tenants who park on it and the truck that stops on it, poured on compacted sand, half a lot at a time, never closed.
Concrete Footings
A footing under a backyard unit, an addition or a patio cover, dug 12 inches into the sand, set out to the lot line, tied and inspected open.
Foundation Raising
A sagging postwar floor lifted from the crawl space on new footings and posts, or a settled perimeter carried on piers where fill moved.
Concrete Cutting
A trench, a panel or a doorway sawn wet out of a thin postwar slab, the slurry drummed rather than run to the gutter, the floor closed flush.
From Your Call to the Finished Slab in Costa Mesa
Four steps, in the order they happen, and no hand-off between them: the estimator who digs the test hole is the foreman on the pour.
Ask for a Visit
Call or send the form and you hear back within 1 business day. We book the free visit around your week, or a tenant's if a rental needs one.
Measure and Itemize
We measure, dig a test hole, trace where the water goes and write the estimate at the property, with every part of the job on its own line.
Permits and the Pour
With your approval we pull any encroachment or building permit, set the date, and run demolition, base, forms, pour and finish.
Check It and Close
We haul away, then check the finished slab with you against the estimate, base, thickness, joints and finish, and close on your say.
Four Reasons Costa Mesa Homeowners Hire Us
C-8 License, Insurance on Every Job
CSLB C-8 is the license class for concrete, and ours is on the California Contractors State License Board register. We carry liability insurance on every job, and it has followed the crew into Orange and Los Angeles counties, so damage done while we work is put right at our cost.
Based in Costa Mesa Since 2019
Julian Mercado set up here in 2019 after 15 years on crews across coastal Orange County. What the estimator opens before pricing here is the ground: sandy loam on the mesa, silty fill on the flats below the Westside bluff, and the never-compacted planter beds under a 1950s yard.
The Estimate Is Free and Written
Nothing is priced from a photograph. We come out, measure the slab, dig a test hole in the subgrade and trace the drainage to the street, then write demolition, base, pour, finish and haul-away as separate lines. A landlord with three units gets three estimates, not one lump.
Guaranteed Against Build Defects
Every job carries a written workmanship guarantee against defects in how it was built. Here it is most often called on for a garage slab that sweats or an apron that cracks at the curb cut, so both are named on the estimate. Wear, staining and a root lifting a walk are not defects.
Want to check something first? (949) 541-4812 or send us a message.
Reviews
What Costa Mesa Customers Say About the Work
Three reviews from Google, Facebook and the BBB, from a homeowner on the Eastside, a landlord in Fountain Valley and a family in Newport Beach, each naming the job and what it has done since.
“Our driveway on the State Streets was the 1955 original, broken into plates that rocked underfoot. They dug out a foot of old planter fill, compacted it, poured 560 square feet at 4 inches with a 5-inch apron and pulled the curb permit themselves. Eighteen months in and it is flat.”
“I own a fourplex in Fountain Valley and the garage slabs were sweating every winter. They cut out all four, laid a vapor barrier and 4 inches of gravel, poured them at 5 inches over two days and gave me one estimate per unit. First winter since, the floors are dry.”
“We needed a slab for a detached studio behind our Newport Beach house. The owner dug the footings 12 inches, set the rebar and the vapor barrier, had the City inspect it, and poured 400 square feet in one morning. The framer said it was the flattest slab he had worked on all year.”
About Harbor Costa Mesa Concrete
CSLB C-8 Licensed and Working from Newport Boulevard in Costa Mesa
Harbor Costa Mesa Concrete pours concrete from an office on Newport Boulevard in Costa Mesa, CA. Julian Mercado started it in 2019 with 15 years of crew work behind him across coastal Orange County, and the crew now serves homes, landlords and businesses in Orange and Los Angeles counties, from Seal Beach to Laguna Niguel.
In a city where most homes are rented and most of the housing went up in the 1950s and 1960s, the jobs are driveways and garage floors on their second life, slab foundations for garages and backyard units, patios, walks and stamped finishes. Each one carries a written workmanship guarantee against defects in how it was built.
Our license is CSLB C-8, on the California Contractors State License Board register to check by name. We carry liability insurance on every job, pull the encroachment permit for anything at the curb, and are there when the inspector comes. Every estimate is measured and written on site.
How We Build
What Goes into Every Costa Mesa Slab We Pour
Every pour follows one sequence: the subgrade is dug and compacted, a vapor barrier goes under anything with a roof over it, gravel under everything, 4 to 6 inches of 3,500 psi mix to the load, and the joints cut before we leave.
- Subgrade test hole dug
- Sand plate-compacted
- Vapor barrier indoors
- 4 in cars, 6 in trucks
- 3,500 psi at 28 days
- Joints on a 10 ft grid
- Broom finish, hand edges
- Cured damp for 7 days
Recent Concrete Work in Costa Mesa and Nearby
The driveway on a Mesa Verde corner, the garage slabs behind a Westside fourplex and the studio slab off Santa Ana Avenue on the Eastside are all on streets you can drive: look at the apron joint at the curb, which is where a Costa Mesa driveway fails first.
Driveway · Mesa Verde · 2025
Mesa Verde Corner Driveway
580 sq ft at 4 in, 5 in apron · Curb cut permitted
Garage slabs · Westside · 2024
Westside Fourplex Garages
4 slabs of 400 sq ft · Vapor barrier under each
Sidewalk · Fountain Valley · 2025
Fountain Valley Frontage Walk
120 linear ft · Parkway encroachment permit
Patio · Newport Beach · 2024
Newport Beach Rear Patio
360 sq ft broom finish · Pitched 2 percent to lawn
Julian Mercado, Owner and C-8 License Holder
Before Harbor Costa Mesa Concrete there were 15 years on crews across coastal Orange County for Julian Mercado, pouring tract driveways in Fountain Valley and warehouse floors on the Westside. He founded the company in 2019, holds the C-8 license in his own name and lives on the Eastside. On every job he does two things himself: he measures the estimate, and he checks the subgrade before the truck is called.
Working in Costa Mesa
Sandy Ground, Postwar Tracts and the Right-of-Way Permit
A mesa of sand between the Santa Ana River and the Back Bay, built up with ranch houses in the two decades after the city incorporated, and a curb line the City owns. Every estimate here allows for all three.
Costa Mesa incorporated in 1953 and most of it was built in the twenty years after: Freedom Homes and the State Streets on the Eastside, Halecrest and College Park north of the fairgrounds, Mesa Verde in the 1960s beside the river. That puts the first driveways, garage floors and walks at 55 to 70 years old, well past what a slab is good for, and in a city where most homes are rented, a lot of them belong to landlords replacing a whole frontage at once.
The mesa itself is an old marine terrace of sandy loam that drains well and does not swell, which is the best ground on this coast to pour on once it is compacted. Below the Westside bluff, along Placentia Avenue toward Fairview Park, the flats are silty river sand and old fill that settle under an uncompacted slab. The marine layer sits on the city most mornings from May to August, and a pour cures evenly under it.
A slab inside the lot needs no permit, but the driveway approach, the parkway sidewalk and anything at the curb are the City's, and need an encroachment permit from Costa Mesa City Hall on Fair Drive. We pull it and meet the inspector. The crew works the whole city, from the Eastside and Mesa del Mar to Mesa Verde, the Westside and the streets around Orange Coast College and South Coast Plaza.
Which Driveway Surface Lasts Longest in Costa Mesa?
Concrete, on this ground: sand under it drains, the marine layer cures it evenly, and there is no clay to heave it. Pavers do well on the mesa too and are the better choice where a driveway must be lifted later for a pipe. Asphalt is the short-lived one here.
| Option | Lifespan | Usable after | Upkeep | On the coast |
|---|---|---|---|---|
| Poured concrete | 30 to 40 years | 24 to 48 hrs on foot, 7 days for cars | Reseal colored work every 2 to 3 years | Salt air does nothing to it; a sealed surface shrugs off the damp |
| Interlocking pavers | 25 to 50 years on a compacted base | The same day | Re-sand joints every 1 to 2 years | Moss and weeds take the joints in the damp months |
| Asphalt paving | 15 to 20 years | 2 to 3 days for cars | Sealcoat every 2 to 3 years | Stays soft in mild weather and scuffs under a parked tire |
Of the three, asphalt is cheapest to lay and dearest to keep up, pavers the opposite, and concrete between them on both. We price only what your driveway needs.
Six Things to Know Before Buying Concrete in Costa Mesa
Why does the marine layer help a fresh slab cure?
Because concrete gains strength while it stays damp, and a gray morning keeps the surface from drying before the slab beneath has set. Costa Mesa sits under the marine layer most mornings from May to August, so a pour here holds its moisture without the wetting an inland slab needs.
Is the sand under Costa Mesa a good base for concrete?
Yes, once compacted, and it drains better than the clay inland. The mesa is an old marine terrace of sandy loam and the flats below the Westside bluff are silty sand. Sand does not swell, but loose sand settles under a slab, so we plate-compact the subgrade and then the gravel.
What is a thickened edge, and does a garage slab need one?
A footing poured with the slab, 12 inches deep at its edge, that carries the walls. A detached garage or a backyard unit needs one so the wall load goes to ground rather than to the slab's edge, which cracks along the wall line. Our slab foundation page covers the rebar.
Can a backyard unit go on a slab in Costa Mesa?
Yes. California lets a homeowner add an accessory dwelling unit, and most going up in Costa Mesa sit on a slab with thickened edges and a vapor barrier under it. The City inspects the forms and the rebar before the pour. The unit above is the builder's; the slab is ours.
When does concrete need a permit in Costa Mesa?
A driveway, patio or walk inside your lot line usually does not, under the California Residential Code. An approach at the curb or a parkway sidewalk needs an encroachment permit; a slab under a building needs a building permit. Both come from the City of Costa Mesa.
How thick should a garage floor slab be poured?
4 inches for cars, 5 inches if a truck, a lift or a workshop machine sits on it, over 4 inches of compacted gravel and a vapor barrier. A garage slab that sweats in winter was poured without the barrier. Both are on the estimate, so you can check them against what arrives.
Costa Mesa Concrete Questions, Answered Before You Call
What we get asked on Costa Mesa doorsteps, in the order people ask it: cost, the curb, thickness, the sand, joints, ground movement, the marine layer, sealing, timing, the permit, the guarantee and what happens when.
How much does a concrete job cost in Costa Mesa?
What comes out moves the estimate before what goes in. A 1950s driveway that breaks up into plates is a morning's demolition; one that was poured 6 inches thick with mesh is a day and a bigger skip. Then the base, the thickness the use needs, the apron at the curb and the finish. We measure each on a free visit and write them as separate lines, so you can see what a broom finish saves against a stamped one.
Can you replace a driveway apron at the curb, and who owns it?
Yes, and the City does. The apron between the sidewalk and the street is public right-of-way, so it needs an encroachment permit from the City of Costa Mesa and is inspected to the City's standard, with the curb cut and the gutter matched. Most driveway replacements here include it, because the apron is where the old slab broke first. We pull the permit, and the estimate lists the apron on its own line.
What thickness does a driveway need for a truck?
5 inches for a pickup, 6 inches if a work van or a loaded trailer parks on it, over 4 inches of compacted gravel, and 4 inches is enough where only cars turn in. An inch too little is invisible when it is poured and shows as a crack pattern in a few years, and nothing repairs it. The thickness we pour is on the estimate.
Does sandy ground need a gravel base under the slab?
Yes. Sand drains and does not swell, which is why Costa Mesa is good ground to pour on, but loose sand settles under load and a slab bridges the hollow until it cracks. The gravel base, 4 inches compacted with a plate, spreads the weight and gives water a way out, and under it the sand is compacted too. Under a 1950s yard we also look for old planter fill, which was never compacted.
What are control joints and how far apart do they go?
Control joints are grooves cut a quarter of the slab's depth into fresh concrete, spaced no more than 10 feet apart on a 4-inch slab. Concrete shrinks as it cures and cracks somewhere; the joint decides where, so the crack runs straight and out of sight in the groove. We cut them the afternoon of the pour, before the slab has decided for itself.
Does the ground in Costa Mesa move enough to crack concrete?
Less than almost anywhere inland, and the exception is fill. The mesa is sandy loam that neither swells in winter nor shrinks in summer, so a slab on compacted sand stays where it was poured. The flats under the Westside bluff and any yard that was regraded carry old fill that keeps settling, and that is where we dig deeper and compact in layers before the base goes down.
When is the best time of year to pour concrete in Costa Mesa?
Almost any week. The coast keeps Costa Mesa afternoons under 85 degrees most of the year, and the marine layer holds moisture in a fresh slab through the mornings, so the cure runs even without the early starts an inland pour needs. The weeks to avoid are a Santa Ana wind in October, when we cover the pour, and a winter storm, when we wait a day for the subgrade to drain.
Does concrete near the beach need sealing?
Plain broom concrete does not; colored, stamped and poolside work does. Salt air does not attack concrete, but a damp winter grows moss on a shaded slab and a colored surface fades in the sun. A penetrating sealer on stamped work every 2 to 3 years keeps the color and leaves the surface easy to wash down. The estimate says which finish yours is and whether it is sealed.
How long is the crew on site for a driveway?
2 to 4 working days for most driveways, then the cure. Day one is demolition and haul-away, day two the base and the forms, the pour is one morning and the joints are cut that afternoon. Walk on it after 24 to 48 hours, park on it after 7 days, and keep a heavy truck off until 28 days, when it reaches full strength.
Do I need a permit to pour a driveway or patio in Costa Mesa?
Not inside your lot line: the California Residential Code exempts driveways, patios and walks on private ground. The driveway approach, the parkway sidewalk and the curb are public right-of-way and need an encroachment permit from the City of Costa Mesa, and a slab under a garage or a backyard unit needs a building permit. We pull whichever applies and meet the inspector.
Is the concrete guaranteed, and what is excluded?
It is. Every job carries a written workmanship guarantee against defects in how it was built, with its terms on the estimate you sign, and it covers the base, the thickness, the joints, the finish and the vapor barrier under a garage slab. It excludes staining, wear, a tree root lifting a walk and a crack that lands in a joint, which is the joint working. A fault in the build is ours to fix, and we come back.
What is the order of events from first call to cars on the driveway?
You call or send the form and hear back within 1 business day. The free visit is booked around your week and the written estimate is handed over before we leave. A curb permit adds the City's review time, allowed for in the start date. The crew is on site 2 to 4 working days, the check-over with you is the day the joints are cut, and cars go back on 7 days after the pour.
Where We Work
Concrete Contractor for Costa Mesa and Coastal Orange County
The list below runs from the beach cities up into the older tracts north of the 405, and each is a place we have dug a test hole, learned the permit counter and poured. Look for your town, or call and we will say on the phone whether it is one we come to.
Open the Costa Mesa Office in Google Maps Free Concrete Estimate for Your Costa Mesa Property
Send the form or call and you hear back within 1 business day. Every estimate is measured and written on site, by Julian Mercado, with the base, the pour and the haul-away as separate lines and no pressure to sign on the day. Landlords get one estimate per unit.