Serving San Francisco, CA and surrounding areas. (628) 895-9188
Pooling water on your driveway quietly destroys the base beneath it. We design and install drainage systems built for San Francisco hills, clay soils, and wet winters.
Drainage solutions in San Francisco redirect surface and subsurface water away from your pavement before it can soften the base, most jobs take one to three days depending on the system type and site complexity.
San Francisco's clay soils absorb water slowly, so rain that cannot run off pools on the surface and works its way under your asphalt. Once the base is saturated, soft spots and sinking follow quickly. If you're also seeing speed bump installation or other paving work on your list, drainage is the right starting point - water control protects every other surface improvement you make.
The steep grades found throughout the city make proper drainage even more critical. Water moves fast on a slope, and without a correctly designed outlet, it erodes the base, undercuts retaining walls, or sheets across the sidewalk creating liability. Getting the grading and outlet right matters as much as the drain itself.
Standing water that lingers hours after a storm means your pavement is not shedding water the way it should. San Francisco's compressed rainy season sends repeated storms in quick succession, giving pooled water plenty of time to penetrate the base beneath your asphalt.
A section of driveway that feels spongy or has started to dip means the base material underneath has been saturated. This is common on San Francisco's clay soils, which hold moisture long after rain stops and gradually weaken the ground beneath the surface.
If rainwater slopes toward your home rather than away from it, you have a grade or outlet problem. Water reaching your garage floor or foundation causes structural damage that grows more expensive the longer it is ignored - drainage is almost always cheaper than the repairs it prevents.
On hillside lots, fast-moving water washes away the gravel and soil at the base or edges of your driveway after storms. If you see sediment or debris collecting at the low end of your pavement, water is moving with more force than your current surface can redirect.
Every drainage project starts with a site visit. We trace where water enters, how it moves across or under the surface, and where it needs to exit. The right system depends on your slope, soil, and the available outlet points on your property. We install channel drains, catch basins, French drains, and perform regrading - or combinations of these - based on what will actually solve your specific problem rather than the simplest option to install. If you also need grading and excavation as part of a larger site project, we handle that work as part of the same crew visit so you are not coordinating multiple contractors.
For hillside lots - which are common throughout San Francisco - a surface drain alone is rarely enough. We design systems that capture fast-moving water at the top of the slope, route it through underground piping, and release it at a code-compliant outlet. We handle permit applications for work that connects to city sidewalks or storm infrastructure, and we walk you through the inspection process so there are no surprises. Permitted work also means you have a documented record that the installation met local standards.
Best for driveways and garage aprons where a linear barrier across the surface collects and redirects sheet flow.
Ideal for low points that collect water from multiple directions, with underground piping routing the collected water to a safe outlet.
Suited for areas where surface water and subsurface seepage both need to be captured and redirected away from foundations or pavement.
The right starting point when existing pavement pitches toward the building rather than away from it - fixing the slope fixes the problem at the source.
San Francisco's drainage challenges are unlike those in most California markets. The city receives the bulk of its annual rainfall in a compressed November-through-April window, often delivered in multi-day storms. The ground below is largely clay-heavy soil that absorbs water slowly, so standing water has nowhere to go and saturates the base of your pavement before it can drain away. Add the steep grades on hillside streets in neighborhoods like Noe Valley and Bernal Heights, where water moves with real force, and the case for a properly designed drainage system becomes clear. Property owners in Daly City and San Bruno face similar conditions - heavy winter rainfall, clay soils, and sloped terrain that amplify drainage problems on residential driveways and private lots.
San Francisco also has specific rules about how water may leave private property. Drainage that connects to a public sidewalk, curb, or storm drain system requires a permit and coordination with the city's Department of Public Works. We are familiar with those requirements and handle the application process so you are not navigating city approvals on your own. Whether your property is a single-family home with a hillside driveway or a multi-unit building with a shared parking area, a drainage system designed for San Francisco's actual conditions - not a flat suburban template - is the only one that will work reliably through a heavy winter.
We reply within one business day and schedule a site visit at no charge. Anyone who quotes a drainage price without seeing your property is guessing - we come to you first.
We walk the property, trace where water enters and where it flows, and confirm which outlets are available. This visit drives the scope and prevents surprises during installation.
If your system connects to city infrastructure, we handle the permit application with San Francisco's Department of Public Works. Once approvals are in hand, we lock in your installation date.
We excavate, set the drain components, connect the piping, backfill, and patch or repave the disturbed surface. Before we leave, we walk you through the finished system and explain the fall maintenance routine.
Free on-site assessment. No obligation. We handle permits.
(628) 895-9188Steep lots require a different approach than flat suburban driveways. We design for slope, clay soil, and the outlet constraints common on San Francisco's dense residential lots - not a one-size-fits-all solution.
Work connecting to city sidewalks or storm infrastructure requires San Francisco DPW approval. We handle the application, coordinate the inspection, and keep the project on schedule so you are not chasing permits yourself.
Drainage installations often require cutting existing pavement and patching the disturbed area. Because we are a full-service paving contractor, we handle both the drainage system and the surface repair as a single project rather than two separate contractors.
Membership in the National Asphalt Pavement Association means we follow recognized industry standards for materials and workmanship - not just the minimum required to pass inspection.
San Francisco's terrain and permit environment make drainage work genuinely different from a suburban project. Every job we take on gets a thorough site assessment and a system designed for the actual conditions on your property.
Add traffic-calming bumps to your private driveway or parking area, installed in a single day with reflective markings included.
Learn MoreSite grading and excavation services that prepare the ground for new pavement or correct slope problems that cause drainage failures.
Learn MoreEvery storm that leaves water pooling on your driveway is weakening the base beneath it. Contact us now while weather windows are open and scheduling is easy.
