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Serving Larkspur, CA and surrounding areas. (415) 430-9873
Whether you need a drain trench in your garage floor, an access opening for a plumber, or a cracked driveway section removed cleanly, we scan before we cut, handle slurry to Marin County standards, and leave the site ready for the next trade.
Concrete cutting in Larkspur uses diamond-blade saws to slice through existing slabs or walls for drain lines, utility access, damaged section removal, or structural openings - most jobs take two to six hours of cutting time and the surface is ready for the next trade the same day.
Concrete cutting comes up in two main situations: something needs to run under the slab (a new drain line, a repaired pipe, an electrical conduit), or a section of concrete has failed and needs to come out cleanly before anything else can happen. In Larkspur, where a large share of the housing stock dates from the 1940s through the 1960s, slabs from that era are frequently cut to access aging plumbing or to make way for a kitchen or bathroom renovation.
Concrete cutting is often part of a larger project - we work closely with the trades coming after us. When a driveway or parking area needs full removal and replacement rather than a targeted cut, we also handle concrete parking lot building and full slab replacement as a separate scope.
If a crack in your concrete was a hairline last year and is now wide enough to catch a coin, the slab has moved - and it will keep moving. In Larkspur, clay soils under older properties expand and contract with the rainy season, and that movement drives the crack. Cutting out the damaged section cleanly is the right first step before any repair or replacement.
Plumbers, electricians, and HVAC contractors regularly need access beneath a slab to run new lines or repair old ones. If you are planning a bathroom addition, a laundry upgrade, or any work that requires getting under your garage or basement floor, concrete cutting is how that access gets created without destroying the whole slab.
Larkspur gets concentrated rainfall between November and March, and older homes on flat lots sometimes develop drainage problems as the ground settles over decades. If water sits against your foundation or collects in a low spot on your patio after a storm, a contractor may need to cut a trench to install or redirect a drain - because that standing water works its way into your foundation over time.
Garage conversions are common in Marin County as homeowners add living space or accessory dwelling units. If your garage has a concrete stem wall or a slab that needs modification to accommodate a new door, window, or floor level change, concrete cutting is the controlled way to make that opening without cracking the surrounding structure.
We use walk-behind flat saws for slab cuts and wall saws for vertical or hard-to-reach work. Every job starts with a ground-penetrating radar scan of the concrete to locate rebar, post-tension cables, conduit, and any other hidden material before the blade touches the surface. In Larkspur's older neighborhoods - particularly Old Town and the hillside streets above Magnolia Avenue - slabs were poured without consistent documentation, which makes that pre-cut scan essential rather than optional. The Concrete Sawing and Drilling Association sets the industry standard for GPR scanning and safe cutting practice, and our process follows those guidelines on every project.
We also manage slurry - the wet gray paste the saw produces - to the standards required by the San Francisco Bay Regional Water Quality Control Board. Slurry cannot be washed into Larkspur's storm drains or creek channels. We arrive with containment equipment and haul it away as part of every job. This protects your property and keeps you clear of any environmental compliance issues.
For projects that need more than a targeted cut - full driveway removal and replacement, for example - we also build concrete driveways from scratch. When cutting is one step in a larger scope, we coordinate with the other trades so the sequence stays on schedule.
Best for homeowners adding a floor drain, repairing a broken pipe, or running new plumbing beneath an existing garage or basement slab.
Best for cracked or heaved slab sections that need to come out cleanly before a repair or replacement pour can happen.
Best for garage conversions, ADU projects, or any work that requires cutting a doorway, window opening, or utility chase through a concrete wall.
Best for renovation projects where an electrician, plumber, or HVAC contractor needs a clean access point through the floor before proceeding.
Larkspur's older housing stock - homes built from the 1920s through the 1960s - was constructed under standards very different from today's. Concrete from that era may be thinner in some spots and unexpectedly thick in others. Original construction documents rarely exist, which means there is no reliable record of what is inside the slab. A contractor working on a mid-century Larkspur home should always scan before cutting, because the results can genuinely surprise even experienced crews. Skipping the scan on an older slab is how jobs become expensive mistakes.
The Marin County environmental rules around slurry handling also make a difference in how jobs are managed here. Larkspur sits within the jurisdiction of the San Francisco Bay Regional Water Quality Control Board, which enforces strict rules about construction runoff. A contractor who arrives without containment equipment is putting you at risk of a complaint from the city or a neighbor. We work throughout San Rafael and Novato, where the same regional rules apply, so slurry management is a standard part of every job we do in Marin County.
The Larkspur Building Division requires permits for most concrete cutting tied to utility modifications, drainage changes, or structural alterations. In Corte Madera, just over the Larkspur border, the permit process is similarly straightforward - and a locally experienced contractor should know both jurisdictions well enough to handle the paperwork without adding delays to your project timeline.
We ask a few questions about what you are trying to accomplish, roughly how much concrete is involved, and whether a larger project is driving the need. We then visit the site to look at the slab, assess access, and confirm the scope. You will hear back within one business day and receive a written quote before any work is scheduled.
We confirm whether a permit is required with the City of Larkspur Building Division and handle the application if one is needed. Most permits in Larkspur take a week or two to clear. Once approved, we schedule a date - most jobs are completed in a single visit.
Before the blade touches the concrete, we scan the slab with a ground-penetrating radar tool to identify rebar, post-tension cables, conduit, and anything else hidden inside. This step protects you from unexpected damage and prevents safety hazards from cutting into a tensioned cable.
We cut along marked lines, contain the slurry with our equipment, and haul it away as part of the job. The cut area is left clean and ready for the next trade - a plumber, inspector, or patch crew. If a permit was required, we coordinate the city inspector visit before the opening is closed up.
Free on-site estimate. We scan before we cut and handle permits and slurry disposal for you. Response within one business day.
(415) 430-9873We scan every slab with ground-penetrating radar before any cutting begins. In Larkspur's older homes, where original construction records rarely exist, this is not a precaution - it is a requirement. Cutting through a post-tension cable or a buried conduit without knowing it is there turns a straightforward job into an expensive repair.
Marin County's environmental rules around construction runoff are strict, and we follow them on every job. We arrive with containment equipment and haul the slurry away properly. You do not have to worry about a complaint from the city or a neighbor, and your storm drains stay clear.
We know the permit process through the City of Larkspur Building Division, the regional water quality requirements, and the specific challenges of cutting older slabs in this area. Working in Marin County since 2022 means these are familiar conditions, not situations we are figuring out on your job.
Cracks beyond the cut line are almost always the result of a wrong blade, a rushed operator, or a missed scan. We size the cut for your slab's actual thickness and condition, make controlled passes, and leave edges that are straight and consistent. You can verify our California contractor license at the Contractors State License Board before signing.
Good concrete cutting is invisible when it is done right - the opening is where it needs to be, the edges are clean, the surrounding slab is undamaged, and the next trade can get straight to work. That is the standard we hold every job to, whether it is a single drain trench or a full garage conversion opening.
When a section of pavement is too far gone for a targeted cut and patch, we build full concrete parking surfaces and commercial pads from the ground up.
Learn moreFull driveway replacement or new pours after the old slab has been cut out and removed, built to current Larkspur standards with proper drainage and reinforcement.
Learn moreWinter wet conditions add complexity and cost to slurry management in Larkspur. Call now or request a free estimate online and we will get you on the schedule while the weather is on your side.