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Serving Concord, CA and surrounding areas. (925) 536-0717
Pooling water damages asphalt from underneath. We find where it collects, install the right drain system, and leave your surface properly sloped so every storm runs off clean.
Drainage solutions in Concord involve installing channel drains, catch basins, or regrading paved surfaces to direct water away from your property and foundation, with most residential jobs completed in one to three days.
If the same low spots fill up every time it rains, the pavement is not draining correctly - and in Concord, that is a bigger problem than it looks. The clay soil here absorbs water slowly, which means standing water stays in contact with your base layer long after the rain stops. Over time, that moisture softens the base, leading to cracks, dips, and eventually full repaving. A properly installed drain system stops that cycle before it starts. When you are ready to address it, a grading and excavation assessment can also catch any base problems beneath the surface.
If the same areas stay wet for hours after a storm, your surface is not shedding water the way it should. In Concord, the clay soil absorbs runoff slowly, so those puddles are sitting on top of your base layer - softening it from above and below. Left alone, this turns into cracking and sinking within a few rainy seasons.
Cracks that seem to open or grow after a wet stretch are a sign water is getting under the surface. Concord's clay soil holds moisture long after the rain stops, so damage continues even when the pavement looks dry. Addressing the drainage is the only way to stop the cycle from repeating every year.
If you can watch water moving toward your foundation or garage slab during a storm, that is a serious warning sign. Water against a foundation causes long-term structural problems that go well beyond the driveway. A channel drain near the garage apron or a regraded surface can redirect that flow before it becomes a much larger repair.
A sunken area in asphalt almost always means the base beneath it has been compromised by water. In Concord's clay-soil environment, these depressions tend to grow each rainy season as more water collects in the low spot and continues to undermine the base. Addressing both the depression and the drainage source together is the right repair.
Our drainage work covers the full range of residential and commercial needs. For most driveways, the answer is a channel drain at the low end of the slope, a catch basin where runoff collects, or a surface regrade that changes the pitch of the pavement so water flows to the street instead of toward your home. In more involved projects, we also address the base layer beneath the pavement - because a surface fix on top of a saturated base will not hold. If a full grading and excavation is needed to restore the base, we handle that as part of the same project.
For properties where drainage problems have already caused surface damage, we combine the drain installation with asphalt patching and surface work so the finished result is clean, smooth, and properly sloped. We also handle permit applications for work that connects to city storm drains or affects the curb, so you do not have to navigate that process alone.
Best for driveways with a long slope that sheets water toward a garage or building - a narrow grate set across the surface intercepts the flow before it reaches the structure.
Best for low points where water collects from multiple directions - an underground collection box with a single grate inlet pipes the pooled water away from the surface.
Best for driveways that slope toward the house rather than away from it - we remove and reset the surface pitch so water flows to the street or a safe outlet.
Best when pooling water has already softened the base beneath the pavement - we excavate, restore the base layer, install the drain, and repave for a lasting result.
Concord follows a Mediterranean climate - almost all of the year's rain arrives between November and March, then summers go almost completely dry. That means your pavement faces months of heavy, repeated soaking followed by months of intense heat. The bigger challenge is the soil: much of Concord and the surrounding Contra Costa County area sits on expansive clay that absorbs water very slowly. Water that cannot drain quickly off your pavement tends to sit just below the surface, softening the base and accelerating cracking far faster than in areas with sandier ground. Getting drainage right before the rainy season is the single most important timing decision for protecting your pavement.
Parts of Concord have relatively flat grades, particularly in older neighborhoods, where water has nowhere natural to go after a storm. We work throughout the area - including Pleasant Hill and Martinez - and we understand the local topography well enough to design a drain system that accounts for where water actually needs to go, not just where it is easiest to route it. That local knowledge matters when you are investing in work that should last 20 years or more.
Drainage problems are hard to diagnose without seeing them in person. We schedule a visit, walk your driveway, check the surface slope, and identify where water is going. You will hear back within one business day to confirm your appointment.
After the visit, we send a written estimate that explains what work will be done, what materials we will use, and the total cost. We explain why we are recommending a channel drain versus a catch basin versus regrading - so you understand exactly what you are paying for.
If the work connects to a city storm drain or affects the public right-of-way, we confirm whether a permit is required and handle the application. On installation day, we cut in, set the hardware, backfill and compact in layers, then patch and finish the surface.
Before leaving, we walk you through the finished work - confirming drain grates are flush, the surface slopes correctly, and patches are clean. Fresh asphalt needs 24 to 48 hours before you drive on it, and we will give you a clear timeline before we go.
Free on-site assessment. Written estimate. No pressure - just a clear answer about what your property needs.
(925) 536-0717Before recommending a drain type or price, we check the base condition beneath your pavement. In Concord, a surface drain installed on top of a compromised base will fail quickly. Addressing the base first - even when it adds to the scope - is how we make sure the drainage solution actually lasts.
Concord's expansive clay soils behave differently from the sandier ground in coastal Bay Area cities. We have designed and installed drain systems across Contra Costa County and understand how local soil movement and concentrated winter rainfall interact with paved surfaces. That experience shapes every drainage design we put together.
Work that connects to a city storm drain or touches the public right-of-way requires city approval in Concord. We confirm permit requirements upfront, file the paperwork, and coordinate with the inspector - you do not have to manage that process. It is part of how we run every permitted project.
California requires paving and drainage contractors to hold a state-issued license. You can verify ours online through the California Contractors State License Board before signing anything. We also carry general liability and workers' compensation insurance, which protects you if anything goes wrong during the job.
Drainage work is only as good as the site assessment behind it. We walk every property before quoting, check base conditions, confirm permit requirements, and design a system for your specific grade and soil - not a generic fix applied to every driveway.
Add physical traffic calming to private driveways and parking areas after drainage and surface work is complete.
Learn MoreRestore a compromised base or regrade a site before repaving so the finished surface holds up through Concord's rainy seasons.
Learn MoreEvery wet winter in Concord pushes more water under your pavement. Call us today or request a free estimate online and we will get out to assess your property before the rains return.