When you need to open a slab for utilities, drainage, or removal, we use diamond-blade equipment to cut cleanly without damaging the surrounding concrete.
Concrete cutting in San Anselmo uses specialized diamond-blade saws to slice through hardened concrete cleanly and precisely - most residential jobs take a few hours to a single day, depending on the size and complexity of the cut.
This is the service you need when a plumber, electrician, or general contractor tells you they need to open up your slab to run a line, install a drain, or replace a damaged section. San Anselmo's older homes, many built in the mid-20th century, often need concrete cutting during kitchen or bathroom remodels, accessory dwelling unit conversions, or drainage upgrades. The goal is to create a clean, controlled opening without cracking the surrounding area.
Concrete cutting is closely related to concrete parking lot building and concrete floor installation. In both cases, there are times when you need to remove or modify existing concrete before new work can start. We handle the cutting, slurry disposal, and cleanup so the next contractor can step in and keep your project moving.
If a plumber, electrician, or HVAC contractor tells you they need to get under your concrete floor or driveway to run a new line, concrete cutting is how that opening gets made. This is one of the most common reasons homeowners in older San Anselmo homes need this service - aging plumbing and electrical systems often require updates that involve going through the slab.
San Anselmo gets concentrated winter rainfall, and if water is sitting against your foundation or garage slab after a storm, it may mean your drainage is not working. A concrete cutter can open a channel or trench in the slab to install or repair a drain, redirecting water away from your home before it causes damage.
If you have a section of concrete that has heaved, cracked through, or sunken, the cleanest repair is to cut out just that section and pour new concrete. Trying to patch over a badly damaged section rarely holds - cutting it out and replacing it gives you a clean, lasting result.
Accessory dwelling unit conversions are extremely common in Marin County, and garage-to-living-space conversions almost always require cutting the existing concrete slab to add plumbing, drainage, or a vapor barrier system. If you are in the planning stages of a garage conversion or ADU, concrete cutting is likely part of the project whether your contractor has mentioned it yet or not.
We use diamond-blade saws that cut smoothly and leave a straight edge, minimizing the risk of cracks or chips in the surrounding area. This is especially important in San Anselmo's older homes, where mid-century concrete slabs often lack the steel reinforcement that is standard today. A careless cut can crack the surrounding area and turn a simple job into a costly repair, so the equipment and technique matter.
Most of our concrete cutting work in San Anselmo falls into three categories: utility access cuts (opening the slab for plumbing or electrical), drainage channels (trenches or openings for floor drains and runoff), and removal cuts (sectioning off damaged concrete so we can remove and replace it). The slurry produced during cutting is collected and disposed of properly - Marin County's stormwater rules require it, and we handle all of that for you.
If your project involves cutting near a foundation wall or opening up a slab that affects structure, the Town of San Anselmo may require a permit and, in some cases, a structural engineer's review. This is standard practice in San Anselmo's seismic zone, and we coordinate that process for you so you do not have to navigate the Building Division on your own.
Best for plumbing, electrical, or HVAC lines that need to run under your slab - precise openings that let the next contractor start work immediately.
Best for floor drains, French drains, or runoff channels - cuts sized for San Anselmo's winter rains and hillside drainage needs.
Best for heaved, cracked, or sunken sections - we section off the damaged area so new concrete can be poured cleanly.
Best for accessory dwelling unit projects - we cut the slab openings needed for new plumbing, drains, and utility access before framing begins.
San Anselmo's housing stock is predominantly mid-20th century, and many homes were built between the 1920s and 1960s. Concrete from that era was often poured without the reinforcing steel mesh or rebar that is standard today, which changes how it cuts and how likely it is to crack during the process. A contractor who works mostly on newer construction may not adjust their approach for an older slab, and that oversight can lead to damage you have to pay to repair.
The town also sits in a valley with significant hillside development. Many properties have concrete work on slopes or near retaining walls, and cutting into slabs on a grade requires extra care to manage water runoff during the wet cutting process. Marin County's stormwater rules are strict: slurry cannot be rinsed into the street or a storm drain. Contractors working in San Anselmo are expected to follow these rules, and violations can result in fines.
We serve homeowners throughout the area, including San Rafael, Fairfax, and Mill Valley, where the same older housing stock and hillside conditions are common. We pull permits through each city's building department, handle all slurry disposal, and coordinate with your other contractors so your project stays on schedule.
We will ask where the cut needs to happen, how big an area is involved, and what the purpose is. Mention any access challenges like a tight side yard or steep driveway. We reply within one business day.
We look at the slab thickness, check for reinforcing steel, assess access for equipment, and note any drainage or slope considerations. You get a written estimate that includes slurry disposal and permit fees if needed - no surprises.
If your project requires a permit through the Town of San Anselmo's Building Division, we handle the application and keep you updated. Straightforward residential permits often take one to two weeks. We do not schedule the work until the permit is approved.
The crew arrives, marks the cut lines, sets up slurry containment, and makes the cut. Expect noise and some vibration. Most residential cuts are done in a single day. We collect all slurry and debris, clean the work area, and walk through the completed cut with you before leaving.
Free on-site estimate, proper slurry disposal, and we coordinate with your other contractors. No surprises, no mess left behind.
(415) 604-1678San Anselmo's mid-century homes have concrete that behaves differently than newer slabs. We assess thickness and reinforcement before starting, so you are not left with a bigger problem than you started with. A careless cut can crack the surrounding area - we take the time to do it right.
Concrete cutting slurry that ends up in a storm drain can result in a fine, sometimes passed back to the homeowner. We follow Marin County's stormwater rules strictly - we contain and dispose of every drop properly, so you are fully protected.
Concrete cutting is often the first trade on a conversion or remodel project, and a delay here pushes everything else back. We coordinate with your general contractor, pull permits promptly, and show up when we say we will - so your project does not stall before it starts.
From San Anselmo to Novato, Sausalito to El Cerrito, we pull permits and handle inspections through each local building department. You do not have to navigate the Town of San Anselmo's Community Development Department on your own - we manage all of it from application to sign-off.
Concrete cutting seems straightforward until you see the damage a contractor can cause when they rush or do not know how to handle older slabs. We walk you through the cut before we start, show you the result when we are done, and explain what the next contractor will find when they open that area - so you are never left guessing about your own home.
Large-scale flatwork projects where cutting is sometimes needed to remove damaged sections before new concrete is poured.
Learn moreWhen the cut opens up space for new concrete, we pour and finish interior and garage floors that are built to last.
Learn moreWhether you are opening a slab for utilities, adding drainage, or replacing a damaged section, we handle it cleanly and on schedule. Call or send a message and we will be in touch within one business day.
