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Unilock Construction in Los Altos Hills, CA | Viceroy Construction
Most homeowners in Los Altos Hills don’t need a paver installer. They need a contractor who understands how Unilock segmental systems behave on hillside clay under design review. We also handle Unilock repair in Los Altos and provide independent Unilock paver and retaining wall construction across Los Altos Hills, and the difference comes down to one thing: we draw the drainage and hardscape coverage before we ever break ground, because this town demands it. Call (877) 358-6557 and we’ll talk through your site.
We’ve spent years working with Unilock’s permeable and structural product lines on the grades common to this semirural enclave. That means Brussels Block driveways, Beacon Hill Flagstone patios, Pisa2 and Treo permeable joints, and U-Cara or Lineo retaining systems. We’re an independent installer – no manufacturer affiliation, no authorized-dealer markup. Just product we trust because the dimensional tolerances hold up when the town’s planner asks questions. For broader context, visit our Unilock sales & service page for the full breakdown of product lines and our parts-sourcing stance.
Why Los Altos Hills Residents Choose Us for Unilock Service
Neil Drummond runs our Unilock scoping, and he grew up in the Saratoga foothills west of here. He trained in the building trades program at West Valley College, with hands-on coursework in concrete and structural work that matters when a hillside driveway needs a geogrid-reinforced cut-in base rather than a flat sand lay. The details you don’t see are the ones that matter most.
Our Los Altos Hills work involves genuine Unilock units, Unilock-matched edge restraints, and Unilock-compatible joint sand. We source geotextile, geogrid, and drainage fittings from quality suppliers instead of marking up proprietary components. That keeps systems interlocked and permeable while costing you less than brand-channel pricing. When the town’s 25% lot-coverage rule drives every plan, you need a contractor who can speak to the plan reviewer. We can. We serve the full Los Altos Hills service area, ZIP 94022, from the hillside lanes to the larger estate properties along the ridge.
Styles & brands we work with
Common Unilock Construction Problems We Solve in Los Altos Hills
- Efflorescence on Brussels Block and Beacon Hill Flagstone. Winter downpours here saturate the hillside clay, then the hot, dry summer pulls moisture and salts up through pavers that sit on an undrained base. The white bloom isn’t a product defect – it’s a base-drainage symptom. We re-set the units over a properly infiltrating base and the efflorescence doesn’t return.
- Joint sand washout and shifting on steep driveways. A flat lay over undisturbed clay is common on older 1950s-1980s Los Altos Hills homes. The first real rain scours the joints and the paver field creeps downhill. We cut the base into the slope, add geogrid where the grade exceeds 8%, and use permeable joint units so runoff infiltrates instead of channeling.
- Edge restraint failure at driveway aprons. Where the slope transitions to the street, runoff concentrates and pushes the outside paver course into the road. We tie Unilock edge restraints to a concrete or aluminum spiked bearer, then grade a swale to redirect the water away from the apron.
- Rutting under permeable paver fields. Clay fines clog the open joints over time, the reservoir base stops infiltrating, and the whole field lifts or ruts in wet winters. We pull the units, clear the joint stone, re-set the base to grade, and re-sand with clean ASTM No. 8 or No. 9 joint material.
- Retaining wall lean on grade changes. U-Cara and Lineo walls hold fine when they’re built with proper drainage behind and geogrid where the engineering calls for it. Without that, hillside hydrostatic pressure pushes the wall face out. We rebuild with the drainage and reinforcement the original installer skipped.
Unilock Service in Los Altos Hills: What Local Conditions Mean for Your Equipment
Because Los Altos Hills caps total lot development at 25% and puts nearly any visible change through design review, a paver driveway or patio here isn’t just a finish choice. The town wants the hardscape’s coverage and drainage accounted for on the plan before approval is granted. That means a paver project that would be a straightforward two-day install in a flatland subdivision becomes a planning exercise here, and the drainage design has to match what the reviewer already signed off on. We draw the paver field, the infiltration area, and the runoff routing on the plan before we ever break ground. That’s why our Unilock work in Los Altos Hills passes review the first time, and why a driveway we build doesn’t puddle at the apron in January.
Unilock Models & Products We Service in Los Altos Hills
We install and repair the full residential Unilock line: Brussels Block for tumbled driveways and walkways, Beacon Hill Flagstone for patios and pool decks, Pisa2 and Treo for permeable joint systems on hillside drives, and Brusit, Lineo, and U-Cara for retaining walls and grade changes. Our repair stance is honest first: if the units and base are sound, we re-level and re-sand. We only recommend a full lift-and-rebuild when the sub-base or slope prep is the actual problem, not because a full replacement is more profitable. Genuine Unilock units and matched restraints preserve the interlock and permeability the design review approved.
See the difference
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AfterUnilock Service Pricing in Los Altos Hills
What drives the cost on a Los Altos Hills site is the grade, the soil, the drainage requirement, and the design-review scope – not the paver unit itself. A flat Beacon Hill patio on a stable lot will cost less than a permeable Brussels Block driveway cut into a 12% grade with geogrid and a plan-set. Every estimate starts with a site visit and a written line-item quote. Here’s what you can expect:
| 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 |
On a tired 1970s ranch off the hillside lanes near ZIP 94022, we pulled up a heaved, sand-washed Brussels Block driveway that had been laid flat over clay without a cut-in base. We rebuilt it with a geogrid-reinforced permeable base, Unilock permeable joint units, and a proper edge restraint tied to a new swale. That driveway now sheds winter runoff instead of puddling at the apron, and the drainage matched what the town had already approved. Call (877) 358-6557 for a free, detailed estimate – we’ll walk the site and tell you exactly what your grade demands.
Serving Los Altos Hills, CA — Our Local Coverage Area
We’re based in the Los Altos Hills area and know this community well, including Mountain View Unilock service nearby. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Unilock Construction in Los Altos Hills
Yes, almost certainly. Los Altos Hills caps total development at 25% of the lot and requires design review for visible changes, including driveway expansion or hardscape replacement. A driveway that replaces an existing paved area is usually simpler, but any increase in coverage needs to be accounted for on the plan. We draw the paver field and drainage into the submittal so there are no surprises at the counter. Call (877) 358-6557 and we’ll tell you what your specific lot can support.
Because the base was never cut into the slope, so runoff channels between the units instead of infiltrating through a permeable joint system. Add the shrink-swell clay common on these hillsides and the base becomes a bathtub in winter downpours. We fix it by cutting the base into the grade, adding geogrid, and using permeable joints so the water moves through rather than over.
Generally yes, but the siting matters more than on a flatland subdivision. A permeable driveway distributes runoff into the soil, which can work well on a large Los Altos Hills lot, but the infiltration area must be set back from septic leach fields and wellhead protection zones per county standards. We verify setbacks before the design goes to the town.
Winter downpours saturate the clay beneath the paver, then the hot, dry summer pulls dissolved salts up through the concrete units where they crystallize as a white bloom. It’s not a product failure, but it is a drainage symptom. Once we re-set the patio over a properly draining base, the efflorescence stops recurring. Call (877) 358-6557 and we’ll assess whether your base is the culprit.
Yes, when the units and the base are still sound. Settling and joint-sand loss are often repairable with a lift-and-re-level, fresh joint sand, and an added edge restraint. We only recommend full replacement when the sub-base has failed or the original grade prep was inadequate – and we’ll show you why on the site visit.
Service Areas Near Los Altos Hills
Our Unilock work reaches Los Altos Hills, plus Saratoga, Monte Sereno, Los Gatos, Cupertino, and Campbell. We also run paver and retaining wall crews further south into the foothill communities. If you’re in the Unilock service area around Seven Trees, we can help there too. For hillside properties farther west, see our Unilock service in Boulder Creek page.
Book Your Unilock Service in Los Altos Hills Today
Your Los Altos Hills Unilock in Stanford or wall project deserves a contractor who knows the town’s design review, the hillside soils, and the product line inside out. We do. Call (877) 358-6557 to schedule your free site visit and written estimate.
Written by Neil Drummond, Owner at Viceroy Construction, serving Los Altos Hills, Unilock repair in Loyola, and the wider South Bay since the start.