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Unilock Construction in Los Altos, CA | Silver Line Contractors
We provide independent Unilock paver and wall construction across Los Altos, from Brussels Block driveways to Beacon Hill flagstone patios in the foothills-adjacent 94022 and 94024 neighborhoods. The thing that makes our Unilock work here different is simple: we build every base and edge restraint around Los Altos’s protected tree roots and expansive clay, not against them. Call (833) 400-1314 for a free estimate on your Unilock project.
We’re Silver Line Contractors, and we’ve spent years installing and re-leveling Unilock pavers on the generous, tree-ringed lots that define this town. We work with Unilock product lines as an independent contractor, with no manufacturer authorization, partnership, or warranty endorsement. What we bring instead is direct field experience with how Unilock’s base-prep and jointing systems behave under Los Altos drainage conditions. For full-scope residential construction that starts at the driveway and carries through the house, see our Unilock sales & service page.
Why Los Altos Residents Choose Us for Unilock Service
Most Los Altos driveways and patios sit on expansive clay that moves with the seasons, and many sit within protected root zones of heritage oaks and redwoods. We know both constraints before the first excavator shows up. Noel Carvalho, our owner and General Contractor in Los Altos, grew up watching his father patch and improve their Gilroy home, then studied construction technology at Gavilan College before spending decades on residential and commercial builds across Santa Clara County. Good construction doesn’t need a sales pitch – the work explains itself. That’s why we use genuine Unilock matching pavers and the manufacturer’s recommended polymeric joint sand on every repair, so color and profile match the existing field instead of looking like a patch job.
We carry Unilock Brussels Block, Beacon Hill Flagstone, and Town Hall pavers, plus the Brussels Dimensional wall series, with local stock for faster Los Altos turnaround. If you’re planning a larger exterior-to-interior remodel, we’re the single-contract solution serving the entire Los Altos service area.
Styles & brands we work with
Common Unilock Construction Problems We Solve in Los Altos
- Polymeric joint sand washing out after winter rains. Los Altos winters send concentrated runoff down downspouts and across low-side driveway edges. When Unilock joints lose their sand, pavers start shifting and settling. We re-sand with Unilock’s polymeric product and, where needed, re-grade so water diverts before it hits the paver field.
- Edge-restraint and base failures on driveway aprons. Expansive clay heaves seasonally, and an under-compacted sub-base opens up ruts at the apron where cars turn. We rebuild the base in lifts and replace rusted edge restraint rather than spot-patching a failure that’s below grade.
- Efflorescence and salt bloom on gray and tan Brussels Block. Shaded courtyards and north-facing paths in Los Altos stay damp through the cool season, drawing mineral deposits to the surface. We clean and re-seal, but more importantly we address the drainage that keeps the pavers wet.
- Surface staining and algae on lighter Beacon Hill flagstone. Courtyards under heritage-oak canopy collect leaf tannin and get almost no winter sun. We remove the organic buildup, rejoint, and recommend a maintenance schedule that matches the shade conditions.
- Sunken aprons where root zones and downspouts collide. This combination is common in the 94022 hillside neighborhoods. On one Brussels Block driveway above Los Altos, we pulled up a sunken apron to find the base had failed along an old root zone and a winter downspout discharge. We rebuilt the sub-base with compacted aggregate in lifts, replaced the rusted edge restraint, re-cut and re-set the original Brussels pavers over the repaired field, and re-sanded with Unilock’s polymeric joint sand so the driveway drains away from the garage before the rains.
Unilock Service in Los Altos: What Local Conditions Mean for Your Equipment
Los Altos’s tree-preservation ordinance routinely requires protected-root-zone arborist reports and tree-protection fencing before excavation. On Unilock jobs in the foothills-adjacent 94022 and 94024 ZIPs, we often re-route paver base lines and use hand-excavation to keep grading out of heritage oak and redwood root zones. That’s the difference between a paver driveway that holds for fifteen years and one that shifts within two. It also means Los Altos Unilock projects take a little more planning upfront than the same job would in Mountain View or Palo Alto, where the tree canopy and review process are different. The ordinance is specific, the arborist reports are mandatory, and skipping that step gets a job red-tagged at the permit counter. We handle the full scope: paver driveway installation, paver patio installation, and full driveway replacement, all built around the tree constraints that define this town.
Unilock Models & Products We Service in Los Altos
We install and repair the Unilock product families you see most on Los Altos lots: Brussels Block, the tumbled, dimensional paver that suits the 1950s and 1960s ranch-house streetscape; Beacon Hill Flagstone, the irregular flagstone-look paver that reads more natural under mature oaks; and Town Hall, the clipped-corner, heritage-style paver that fits the older Eichler-influenced neighborhoods. For walls and borders, we work with the Brussels Dimensional and Brussels Block wall series. Our parts approach is repair-first: we use genuine Unilock matching pavers and their recommended polymeric joint sand so color and profile match the existing field, and we rebuild base and edge restraint rather than spot-patching where the failure is below grade. Where a run is isolated, a targeted lift-and-relay is honest and far cheaper than replacement. We only recommend full replacement when base movement or clay heave spans the whole field.
See the difference
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AfterUnilock Service Pricing in Los Altos
Unilock paver work in Los Altos costs more than in cities with sandy, stable soil, because the expansive clay and tree-root constraints demand deeper excavation, better sub-base compaction, and sometimes hand-digging. Here’s what to 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 |
Your free estimate includes a site walk, a look at drainage and root-zone constraints, and a written line-item quote with no change orders once work starts. Call (833) 400-1314 to schedule yours.
Serving Los Altos, CA — Our Local Coverage Area
We’re based in the Los Altos 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 Los Altos
Yes, in most cases. The City of Los Altos requires an arborist report and tree-protection fencing before excavation, and we often hand-excavate and re-route base lines to keep grading out of protected root zones. The key is designing the paver field around the roots, not cutting through them. Call (833) 400-1314 and we’ll walk the site before you commit to anything.
Almost always, it’s drainage and clay movement working together. A downspout dumping onto the low side of the driveway saturates the expansive clay, the sub-base loses support, and the edge restraint fails. We fix it by re-grading the discharge, rebuilding the base in lifts, and replacing the edge restraint. Call (833) 400-1314 for an exact diagnosis – estimates are free.
For pavers and walls themselves, Chapter 7A fire-resistive requirements mostly apply to structures, decks, and siding, not the paver field. But the code does shape how we build: we keep combustible mulch and plantings back from paver edges and use non-combustible base materials where required.
Yes. We use genuine Unilock matching pavers in the same color and profile as your existing field, and re-sand with Unilock’s polymeric joint sand so the repair blends. A targeted lift-and-relay is often all that’s needed. We only recommend full replacement when base movement or clay heave spans the entire field. Call (833) 400-1314 and we’ll tell you honestly which one you need.
Late spring through early fall. The dry season lets us compact base material without fighting saturated clay, and it gives polymeric sand time to cure before the first real rain. Los Altos construction schedules already cluster around the dry months for this exact reason. Call (833) 400-1314 to reserve a slot before the summer calendar fills.
Service Areas Near Los Altos
In addition to Los Altos, we serve Gilroy, San Martin, Morgan Hill, San Juan Bautista, and the surrounding South Bay communities. For Unilock work up the hill, see our Unilock service in Los Altos Hills page. For projects on the other side of the freeway, see Unilock service in Palo Alto.
Book Your Unilock Service in Los Altos Today
If your Loyola Unilock service area pavers are shifting, stained, or draining wrong in Los Altos, we’ll walk the site and give you a written repair plan with real numbers. Call (833) 400-1314 to schedule your free estimate. We’ll work around the trees, the clay, and the permit counter.
Written by Noel Carvalho, Owner at Silver Line Contractors, serving Los Altos and the South Bay.