Cracked, stained or uneven garage floor? We dig out, pack the base and pour a new slab built for your car, coating or workshop.
Garage floor concrete in Tiburon means clearing out the old floor, then forming, pouring and finishing a new flat slab on ground that's packed evenly underneath, so your car, your workbench and whatever comes next sit on firm, even support.
Most calls start with something you can see. The floor's cracked across the middle, it's sunk by the door, water pools where you park, or the top is chipping and dusty. We're based in Tiburon and work in cities across Marin and nearby, from Novato down to Sausalito and over to Richmond, and the fix is usually the same, a new slab on a properly built base.
Price moves with the size of the floor, whether the old slab has to come out and get hauled away, how much work the ground underneath needs, and what the floor has to carry, like a moisture barrier, extra steel for a lift or a particular finish. The schedule turns on whether a permit and inspections come into it, the weather and the cure wait before you park. The written estimate I give you spells out what's included.
The biggest planning question on a garage floor is what it has to do besides hold a car. Each of these three plans changes what goes under or into the concrete, so they're worth settling first.
If you'll heat or cool the garage, coat the floor or connect it to the house, garage slab guides say a moisture barrier under the concrete may be important. It's a sheet that keeps ground moisture from rising, laid before the pour with its openings sealed, so it has to be in the plan before we pour.
If a lift might go in someday, get the lift maker's concrete requirements before the slab is built. A lift's loads and anchor bolts can call for a set thickness, strength or rebar, the steel bars that tie a slab together, so the floor gets planned for the lift up front rather than cut out later.
Before epoxy or another coating, the installer checks the concrete's moisture and surface texture, even on a young floor that looks dry. Oil, chemicals from tires, curing compounds, the sprays put on fresh concrete to slow its drying, and moisture can all hurt how well a coating sticks, so tell us a coating's coming.
From the first call to the last walk-through, here's what a new garage floor looks like on your end and who handles each part.
Call (415) 429-4397 or use the form, and tell us roughly how big the garage is and what's going on with the floor now. We get back to you and set a time for me to come out.
I come out, look at the floor and where the water goes, ask how you plan to use the garage and measure. Then you get a written estimate in plain words, so you know what you're agreeing to.
Once you're ready, we sort out what the city or county asks for and wait for any permit before starting. Then our crew breaks out the old floor if needed, preps and packs the ground, pours and finishes the new slab.
When the slab's finished, we walk it with you, go over the cure wait before you drive on it and clean up. Ask any question you've still got, because I'd rather answer it twice than leave you guessing.
Before we pour a garage floor, I ask how you'll use the space, because a coating, a car lift or a heated room each changes how we plan the slab. A floor for parking and storage is simpler than one under a lift or in a finished workshop, and it's far easier to get that right on paper than to cut concrete out later.
Most of the work goes into the subgrade, the ground the slab sits on. We dig it out and pack it firm, along with any trenches cut for pipes or wires, because a base that's only raked level settles with the dirt. We check where water runs so the floor drains toward the door, and we pour when midday heat won't leave a weak, dusty top.
When the budget gets tight, people usually look at cutting the base first, and I'd cut it last. Nobody sees it the day we pour, but it's what decides whether the floor stays flat, so I'd trim the finish before the ground. If you want color or a pattern, we can talk through decorative concrete. Some garage jobs also turn up a failing wall beside the driveway, which we handle as concrete retaining walls.
A smooth, hard finish sweeps clean and suits parking, storage and a workbench. It's the plain choice most garages get, and it keeps the finish side of the budget low so more of it goes into the base.
A broom finish, fine lines pulled across the wet surface, gives shoes and tires more grip when the floor gets wet. It's harder to sweep than a smooth floor, so we usually suggest it near the door or in garages that stay damp.
Send the form and we'll get back to you within one business day to set a time. I come out, look at the garage and measure, then give you a free on-site estimate in writing, with no pressure and no obligation. It helps to have the garage's size and any plans for a coating, living space or car lift ready.
(415) 429-4397The Town of Tiburon issues building permits, and its list of work that needs one names drainage, walls and kitchen or bath remodels, but not garage floor concrete. That doesn't settle whether yours needs one, so the place to ask is the Tiburon Building Division. We find out what your job needs, help you with the paperwork and wait until any permit is in hand before we start.
Tiburon's rainy season runs from October 15 to May 1, and the city expects every job to keep runoff from carrying soil or debris into storm drains or onto the neighbors. On a garage floor, that means covering dug-out dirt and keeping concrete washout contained. If the job carries a construction or demolition permit, the city also requires at least 90% of the discards to be tracked and diverted, and the old slab we break out counts toward that.
Around Tiburon we mostly see older garages with floors that have cracked or dropped near the door, and more owners turning the space into a shop or a room. We do the same work in Strawberry and Mill Valley, where the rules can come from a different office, so we check each job's requirements before we plan the pour.
I started Sterling Stone Tiburon Concrete in Tiburon in 2020, after teaching myself on small jobs around my own place and learning the rest next to people who'd been at it for years. Six years in, I still come out to look at every garage myself, write the estimate, and stay on site with our crew while the work gets done.
I care most about the parts you won't see once the concrete's down, the ground underneath and where the water goes. California requires a license for concrete work, even on jobs under $1,000, when the work needs a permit of any kind or uses hired helpers. We're fully licensed and insured. Our work is backed by our satisfaction guarantee.
If you're thinking about a new garage floor, call (415) 429-4397 or send us a message and tell me how you want to use the space. That one answer shapes most of the plan, so it's the best place to start. Photos of the cracks or low spots help too, and we'll take it from there.
If you'd like the garage floor to look like more than plain gray concrete, color and patterned finishes can make it fit a workshop, gym or room off the house.
When the ground beside the garage or driveway is leaning, cracking or washing out, a new concrete wall holds the soil back and keeps it off your slab.
Our garage floor work reaches past Tiburon into the cities below, plus plenty of places nearby that don't have their own page yet. If you don't see yours listed, just ask.
Installing a reinforced concrete slab in the Bay Area usually costs about $9 to $18 per square foot. That's the going rate across the region, not our price, and where your garage lands depends on its size, the tear-out and what the floor has to carry. After I look at it, your written estimate gives you the figure for your garage.
One Bay Area cost guide says a new slab should be walkable within 48 hours and suggests waiting about a week before heavier loads like your car. Curing, the slow hardening that gives concrete its strength, takes about 28 to 30 days to finish, so plan that first week around parking somewhere else.
Concrete shrinks as it dries, so some cracking is normal, but it doesn't have to wander across the floor. Control joints, straight cuts placed on purpose, give a crack a chosen line instead of a random path. They organize cracking rather than stop it, so ask where the joints will go, and I'll show you before we pour.
Under a Tiburon permit, inspections have to be requested and passed before any work gets covered, and again at the end of the project, before the permit expires. Depending on the job, that can include a concrete slab and under-floor inspection before the concrete goes in. We plan the pour around those visits.
Clear the garage out completely, because we'll need the whole floor and room to bring equipment in. Plan where you'll park through the cure wait, and tell me about any floor drains, pipes or wires that run under the slab so we can work around them.
Call (415) 429-4397 or send the form, and you'll know what your floor needs underneath before you spend a weekend clearing out the garage.
