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Unilock Construction in Hillsborough, CA | San Bernardino Contractors
We provide independent Unilock installation and repair across Hillsborough, California, handling paver driveways, patios, and retaining walls for the town’s estate properties and hillside lots as a Hillsborough General Contractor. What makes our work here different comes down to the two constraints every Hillsborough project eventually hits: protected native oaks with arborist-mandated root-zone setbacks, and steep grades that punish any hardscape drainage plan that isn’t engineered for the actual slope. Call us at (855) 473-5620 about your Unilock project and we’ll tell you straight what will work on your site.
Why Hillsborough Residents Choose Us for Unilock Service
We’re an independent Unilock installer, not an authorized dealer or manufacturer representative. That distinction matters. We specify Unilock products because the Brussels Block and Pisa2 lines have held up better on Peninsula hillsides than other pavers we’ve tried, not because a rep tells us to push them. Ruben Castillo, who runs San Bernardino Contractors, learned load paths and retaining-wall mechanics hands-on years before he ever had a business card, and his approach filters into every base-prep and backfill decision we make on Unilock service in San Mateo and throughout the Peninsula. In Hillsborough, we’ve seen what happens when shortcuts get taken on a 30-percent grade or within a protected oak’s root zone, and we don’t repeat those mistakes.
Styles & brands we work with
Common Unilock Construction Problems We Solve in Hillsborough
- Efflorescence on Brussels Block and Cambridge pavers. Where hillside drainage discharges across a paver surface instead of being intercepted at the base, mineral salts wick up and leave that white haze. Hillsborough’s winter rain and steep lots make this a regular call for us. The fix is drainage correction followed by cleaning and resealing, and we’ll show you the difference between cosmetic efflorescence and actual surface failure.
- Bulging Pisa2 retaining walls after a wet season. When a wall gets backfilled with native clay and no geogrid, winter rain saturates the soil and pushes the lower courses out. Heavy clay is common on Hillsborough slopes. We excavate to a proper gravel footing, install engineered geogrid with free-draining backfill, and tie the wall into drainage so water never sits behind it.
- Spalled ArmorTec faces and washed-out joints on steep driveways. Hillsborough driveways are often graded to drop fast toward the street. Storm runoff scours the joint sand and undermines edge restraint, which is why we always pair our Unilock driveway installs with surface drainage and properly anchored edge units.
- Rocking Beacon Hill Flagstone on patios under oak canopy. Protected oaks keep their root zones irrigated, and wet soil under a patio can cause base settlement that makes flagstone units shift. We compact in lifts, address the moisture vector, and work with the town’s arborist setbacks so the tree and your patio both survive.
- Paver driveways and patios installed without drainage provisions. We see this on Hillsborough estate properties all the time: a beautiful paver surface that starts holding water because no one planned for the slope’s runoff. We fix the grade, install French drains or channel drains, and reset the pavers so the system works as designed.
Unilock Service in Hillsborough: What Local Conditions Mean for Your Equipment
Hillsborough’s town arborist review for protected native oaks routinely sets root-zone setbacks that dictate where a paver driveway or patio can even sit. That’s the one local variable that shapes our Unilock layouts more than anything else. The review isn’t a formality; it produces legally binding conditions that shift excavation lines and edge restraints before the first paver gets placed. We plan our base excavation and drainage routes around tree-protection zones from day one, which means fewer surprises and no stop-work orders mid-project. That’s the difference between an installer who knows Hillsborough’s process and one who shows up with a generic site plan.
Unilock Models & Products We Service in Hillsborough
We work across Unilock’s core hardscape lines: Brussels Block, Cambridge Pavingstones with ArmorTec, the Pisa2 segmental retaining wall system, and Beacon Hill Flagstone. For repairs, we use genuine Unilock units and matching edge restraints and joint sand so the repaired surface performs like the original. Where a job calls for geogrid, drainage aggregate, or base material, we source compatible products from suppliers we trust, never the cheapest substitute. We keep joint sand, edge restraints, and replacement units stocked for fast turnaround on Unilock repair in Highlands-Baywood Park and Hillsborough repair calls.
See the difference
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AfterUnilock Service Pricing in Hillsborough
Here’s what Unilock hardscape work typically runs in Hillsborough, with the caveat that site conditions like grade, access, and arborist-mandated setbacks can move the numbers.
| Service | Price Range |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Driveway Replacement | $5,000 – $14,000 |
| Driveway Sealing | $250 – $700 |
What drives your quote: total square footage, slope and drainage requirements, whether we’re removing old concrete or asphalt, and how much base correction the site needs. A free estimate from us includes a written line-item quote and a straight answer on whether repair or full replacement makes sense. Call (855) 473-5620 to schedule yours.
Serving Hillsborough, CA — Our Local Coverage Area
We’re based in the Hillsborough area and know this community well, and we also serve Unilock in Burlingame. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Unilock Construction in Hillsborough
Yes, if the driveway is designed with surface and subsurface drainage as part of the plan, not as an afterthought. On Hillsborough’s graded lots, we intercept runoff at the top of the driveway with channel drains or French drains, grade the pavers to move water off the surface, and anchor the edges so storm flows don’t scour the joints. If your existing driveway is failing, the drainage was almost always the missing piece. Call (855) 473-5620 for an evaluation and a quote that includes the drainage work.
Town arborist review sets root-zone setbacks that legally restrict hardscape placement around protected native oaks. We plan the paver layout, base excavation, and edge restraints around those setbacks from the start, so your project doesn’t stall at permitting or get flagged mid-construction. It’s one of the first things we check when you call us about a patio or driveway.
Bulging Pisa2 walls are almost always the result of clay backfill with no geogrid or free-draining aggregate behind the wall. Saturated clay pushes the courses outward, and the wall starts to lean. We excavate, rebuild with engineered geogrid and gravel backfill, and add drainage so water pressure never builds behind the wall again. On one sloped Hillsborough estate lot, we rebuilt exactly that scenario and capped the terrace with Cambridge ArmorTec pavers, set back from the protected oak’s root zone per the arborist’s plan.
That white haze is efflorescence, a cosmetic mineral bloom from moisture moving through the paver and evaporating at the surface. It doesn’t mean the pavers are structurally failing. In Hillsborough, it typically means hillside drainage is discharging across the paver surface instead of being intercepted at the base. We fix the drainage, clean and reseal the pavers, and the problem stays gone. If you’re seeing it, call (855) 473-5620 and we’ll tell you what’s causing yours.
Most Hillsborough Unilock driveways can be repaired without a full tear-out. If the base is sound but joints have scoured or edges have shifted, we reset units, replenish joint sand, and upgrade edge restraint. If the base has compacted poorly or the grade is wrong, a partial rebuild is usually still the better call. We’ll tell you honestly which one your driveway needs. Estimates are free, so call (855) 473-5620 before you assume the worst.
Service Areas Near Hillsborough
Our crew regularly works in Hillsborough’s neighboring Peninsula communities, including Burlingame, San Mateo, Belmont, Foster City, and Redwood City. If you’re nearby and need Unilock hardscape work, Unilock service in El Granada and Unilock service in Millbrae are two pages that describe how we approach those areas. We also maintain a Hillsborough service area page with broader coverage info and our Unilock sales & service page for the full product capability list.
Book Your Unilock Service in Hillsborough Today
If it’s not built right the first time, you’re just paying for it twice. That’s been our rule since the beginning, and it’s why we plan every Hillsborough Unilock install around the oak setbacks and slope drainage that this town throws at you. Call (855) 473-5620 to schedule your free estimate, and we’ll give you a straight answer on what your site needs. Same-week estimates are available for most Hillsborough properties.
Written by Ruben Castillo, Owner at San Bernardino Contractors, serving Hillsborough and the wider Peninsula with hardscape that holds up to the grade.