Concrete contractor in Kentfield, CA - slabs that send water where it should go

Alliance Novato Concrete is a concrete contractor based in Novato that works in Kentfield, pouring driveways, patios, walks and steps and building retaining walls and foundations, with the base and drainage planned before any concrete goes down.

Request an estimate (628) 209-1066

A broad light-gray concrete driveway curves toward a dark modern house with wood siding and two garage doors.

Why Kentfield homeowners redo a driveway or patio

Most of our calls come from Novato and the cities around it, Kentfield included, about a driveway, patio, walk or steps that's worn out or was never right to begin with. The cracks, the sinking corner and the water pooling by the garage usually start under the slab, not on top of it.

So I plan the parts you can't see first. The subgrade, the ground the slab sits on, gets dug out and packed instead of raked level, rebar goes in so the steel holds the slab together, and the slope sends water away from your house. That goes for flatwork, our word for driveways, patios and walks, and for bigger jobs like foundation installation, where I'll bring in an engineer before I'd guess.

Concrete work we do in Kentfield

How a Kentfield job runs

Call or send a message
Call (628) 209-1066 or use the form, and tell us what's wrong with the driveway, patio or walk and what you want from it.
I come out and look
I come out myself, look over the slab and the ground around it, check where the water runs and ask how you'll use the space. Then you get your estimate.
You say go, we build
We sort out any permit, and where it's the county's, simple ones come out on request while complex ones can take weeks or months. Then we prep, pour, clean up and walk it with you.

What shapes a concrete job in Kentfield

Part of Kentfield's land falls in mapped flood and fire hazard zones, with the shares in the questions below, so on a job here I look hardest at where the water goes. A slab that falls toward the house or holds a puddle by the garage is what we get called to fix, and the cure is a packed base and a slope that carries water off.

The price moves with the size and thickness of the slab, how much old concrete we break out, how deep the base has to go, the steel, and the finish you pick, from a broom finish, the brushed texture that gives you grip, to stamped. The schedule turns on whether a permit is needed and on curing, the wait while the concrete gains strength, which keeps you off a driveway longer than a patio. Your estimate puts a figure on your job.

We're based in Novato and do the same work next door in San Anselmo and Larkspur, so ask for an estimate and I'll come out and look at yours.

Request an estimate

Tell us about your Kentfield job

Send the address and what the slab is doing. We reply within one business day, then I come out for a free on-site estimate, with no obligation.

A straight concrete sidewalk with wide steps runs between mulched garden beds and green grass.

What Kentfield homeowners ask us to pour

Driveways rebuilt on a dug-out, packed base
Patios sloped to carry water away
Front walks and steps that sit level
Stamped and decorative patio finishes
Retaining walls where a yard slopes
Control joints cut where cracks should go

Other cities we work in

Why Kentfield homeowners call Alliance Novato Concrete

I come out to look at every job and give the estimate myself, and I'm on site with our crew while the work gets done. You get a quick, straight answer, including a no when concrete isn't the fix or the job needs an engineer.

The base, the steel and the drainage get most of our attention, because they're hidden once the concrete is down and they're the first thing a cheap bid cuts. The work is backed by our satisfaction guarantee, so call (628) 209-1066 or use the form when you're ready.

Kentfield concrete questions

Do I need a licensed contractor for concrete work in Kentfield?

Usually, yes. The state licensing board requires a license when a project needs a building permit, uses employee labor, or totals $1,000 or more in labor and materials, and a bigger job can't be split up to get under that. We're licensed and insured.

How long does a Marin County permit take for concrete work?

Simple county permits are issued on request, while complex ones that involve inspections and often approved plans can take many weeks or months after you apply. The Marin County Community Development Agency enforces the county's building code. When your job needs a permit, we find out which office handles it, do the paperwork and put in writing who's pulling it.

Which building code does Marin County use for concrete projects?

The county has said it enforces the 2022 California building codes, and a proposed county ordinance would move it to the state's 2025 update with some local changes. Since that was still a proposal in the county record, we confirm which edition applies when we handle your permit.

How much of Kentfield is in a fire or flood zone?

A hazard data site using state fire maps puts 51% of Kentfield's land in a High fire hazard zone, and 7% in a FEMA flood area with a 1% yearly chance of flooding. Those are shares of land, not your lot, so check the CAL FIRE and FEMA maps for your address.

Will my new concrete driveway crack like the old one?

Concrete can crack, but a good job decides where. We cut control joints, grooves that give the slab a straight line to crack along, and set it on a packed base with rebar, so a hairline crack doesn't turn into a sinking slab.