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Unilock Construction in San Francisco, CA | San Mateo Construction
We provide independent Unilock installation and repair across San Francisco, from Richmond District walkways to Mission District driveways. What makes our Unilock work different here is that we understand how the city’s soft-story retrofit reality and fog-belt moisture affect paver bases, drainage, and long-term performance. Call (855) 901-7266 for a free estimate on any Unilock project.
San Mateo Construction has laid Unilock pavers and retaining walls across San Francisco and the Peninsula long enough to know how their unit dimensions, jointing patterns, and edge restraints actually behave in our soft, wet ground. We tell owners when a repair beats a tear-out, and we’re not shy about pointing out when a base problem means rebuilding rather than patching. We are an independent installer and are not authorized, sponsored, or endorsed by Unilock.
Why San Francisco Residents Choose Us for Unilock Service
Noel Carrington, our owner, grew up in the Baywood neighborhood of San Mateo, a few blocks from Coyote Point, helping his father pour concrete footings on weekends. That hands-on start led to construction technology studies at Skyline College and nearly three decades of residential and light commercial work across San Mateo County. When he talks about Unilock pavers, he talks about what actually happens when fog drip sits on a north-facing walk for six months or when a driveway takes point loads from a delivery truck on an undersized base.
We carry a working knowledge of Unilock’s full product range, including Unilock sales & service details that most general contractors never bother to learn. Homeowners in San Francisco call us because we stock spec-matched aggregate base and polymeric joint sand locally, we use Unilock’s own matching units and edge restraints when repairs must tie into existing courses, and we schedule around the city’s marine fog patterns so exterior work gets done before moisture becomes a problem.
Styles & brands we work with
Common Unilock Construction Problems We Solve in San Francisco
- Sand-joint washout on sloped driveways. San Francisco’s tight lots and steep grades mean winter rain sheets across paved surfaces before it can drain. We see garage aprons in neighborhoods like the Mission where joint sand has washed out completely, leaving pavers to migrate and shift under wheel loads. Fixing this means re-sanding with the right polymeric product and often correcting the slope so water moves away from the structure.
- Efflorescence and white bloom on gray-toned pavers. Constant fog drip and slow drying on north-facing and shaded walks cause that salt-like white haze on Unilock pavers. It’s not a paver failure, but it looks bad. We clean it properly and address the drainage issue that keeps the surface damp so it doesn’t return quickly.
- Base failure where pavers were set over old concrete or uncompacted bay fill. This is a big one in San Francisco. A lot of older homes sit on fill or have old concrete slabs that were never removed. Pavers set on top of that will heave, sink, or crack because the base underneath isn’t doing its job. We excavate down to good bearing soil or recompact aggregate properly before resetting units.
- Edge restraint failure on paver patios and walkways. Without proper edge restraints, pavers spread outward over time, especially in wet conditions. We see it a lot on Richmond District patios where fog keeps the ground soft for months. The fix is resetting the edge with Unilock’s matching restraints and recompacting the perimeter.
- Polymeric joint sand loss and rutting in driveways. Heavy vehicles on undersized bases create ruts and push joint sand out. This is a structural problem, not a cosmetic one. We rebuild the base with proper depth and compaction, then reset the pavers so they hold up to real loads.
Unilock Service in San Francisco: What Local Conditions Mean for Your Equipment
San Francisco construction is dominated by the reality that most of the city’s older housing stock sits on unreinforced soft-story ground floors that must be seismically retrofitted under mandatory city ordinances. That means a huge share of local construction work is seismic strengthening of existing wood-frame buildings rather than new ground-up building, and it directly affects Unilock paver work. Because mandatory soft-story retrofit work is already opening ground-floor walls and tying old foundations to new shear walls across San Francisco’s pre-1940s wood-frame buildings, any paver driveway or patio that ties into a structure has to account for that same foundation and drainage work. A driveway apron is rarely a standalone slab job here. In the Mission, a homeowner wanted Unilock in Mission District for a Brussels Block driveway apron tied to a garage that was already mid-retrofit for soft-story strengthening, and the old concrete apron had heaved and trapped water against the new foundation. We excavated down past the failed base, recompacted aggregate, set the tumbled units on the correct slope away from the garage, and locked the edge with restraints so runoff cleared the shear-wall footing instead of pooling against it. That’s the kind of coordination most paver installers don’t think about, but in San Francisco it determines whether the job lasts.
Unilock Models & Products We Service in San Francisco
We install and repair the full Unilock paver and wall line, including Brussels Block, the tumbled three-piece modular system that’s a favorite for San Francisco driveways and walkways. Beacon Hill Flagstone works well for irregular flagstone-style patios where homeowners want a more natural look. For permeable applications and straight-edged plank profiles, we recommend Onyx and Il Campo. And U-Cara multi-face wall systems with pillar and cap units give retaining walls a clean, modern face. We carry genuine or spec-matched aggregate base and polymeric joint sand for fast turnaround, and we keep Unilock edge restraints and caps on hand for repair work that must tie into existing courses. Our approach is simple: if only a few units are heaved or the joint sand has washed out, we reset and re-sand. If the base has failed or the wall is bulging, we rebuild the base rather than patch over it. That’s the repair-versus-replace judgment that saves San Francisco homeowners money over time.
See the difference
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AfterUnilock Service Pricing in San Francisco
What drives the cost of Unilock work in San Francisco is usually what’s underneath the pavers. If the base is intact and we’re re-sanding or resetting a few units, the job is fast and affordable. If we’re excavating failed base material, recompacting aggregate, and tying drainage into an existing foundation, the scope grows. Every estimate we give is itemized so you see exactly where the money goes.
| Service | San Francisco Price Range |
|---|---|
| Paver Driveway Installation | $8,260 – $21,240 |
| Paver Patio Installation | $4,130 – $12,980 |
| Driveway Replacement | $5,900 – $16,520 |
| Driveway Sealing | $295 – $825 |
The estimate is free, and it includes an on-site look at your base, drainage, and existing hardscape. Call (855) 901-7266 to schedule one, and we’ll give you a written line-item quote before any work starts.
Serving San Francisco, CA — Our Local Coverage Area
We’re a San Francisco General Contractor based in the area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Unilock Construction in San Francisco
No, that white haze is efflorescence, a salt-like bloom that forms when moisture moves through the paver and evaporates on the surface. In San Francisco, the Richmond’s persistent fog drip and slow drying on shaded, north-facing walks make it much more common. We clean it properly and then address the drainage or shading issue so the surface doesn’t stay damp. Call (855) 901-7266 if you want us to take a look in person.
Yes, and in fact we recommend coordinating the two. San Francisco’s soft-story retrofit work often means the ground-floor walls are open and the foundation is being tied to new shear walls. A driveway apron that ties into that same foundation needs to be graded and drained so water moves away from the footing, not toward it. We’ve done exactly this kind of coordinated work in the Mission and elsewhere. Call (855) 901-7266 to talk through your project.
A paver driveway installation in San Francisco typically runs between $8,260 and $21,240, depending on square footage, base preparation, drainage work, and whether we’re tying into an existing foundation or retrofit. Driveway replacement, which includes removing old material and rebuilding the base properly, runs $5,900 to $16,520. The exact number depends on what’s underneath. Call (855) 901-7266 for a free on-site estimate.
Bulging and separation in a Unilock retaining wall almost always means the base has failed or was never compacted properly in the first place. In San Francisco, soft, wet ground from fog and rain makes this worse, especially on sloped lots where water gets behind the wall and adds pressure. We don’t patch over this. We rebuild the base with proper aggregate depth and compaction, then reset the wall so it holds. Call (855) 901-7266 and we’ll assess it.
We repair small areas all the time. If a few Brussels Block units have heaved or the joint sand has washed out on a patio or walkway, we reset and re-sand. We only recommend full replacement when the base itself has failed and patching would just delay the same problem. Either way, the estimate is free. Call (855) 901-7266 to schedule a look.
Service Areas Near San Francisco
We serve all of San Francisco, including the Unilock service in Chinatown area, plus nearby communities including San Mateo, Burlingame, Highlands-Baywood Park, Foster City, Hillsborough, and Belmont. We also work in the South Bay, including Unilock service in Los Altos Hills. For the full picture of where we work, see our San Francisco service area page.
Book Your Unilock Service in San Francisco Today
Tell us what you actually need, and we’ll figure out the right way to build it. Call (855) 901-7266 for a free estimate on Unilock paver or wall work in San Francisco, and we’ll come out, look at your base and drainage, and give you a straight answer.
Written by Noel Carrington, Owner at San Mateo Construction, serving San Francisco and the Peninsula since 1994.