Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Unilock Construction in Los Altos, CA | Millwright Builders
Unilock paver and retaining wall work in Los Altos runs $3,500 – $18,000 for most driveways and patios, and we service every ZIP in the city: 94022, 94023, and 94024. The one thing that makes our Unilock work here different is that we plan around Los Altos lot-coverage rules and heritage oak root zones before the first paver goes down. We’re Millwright Builders, an independent Unilock installer led by Noel Castañeda, and we’ve set Brussels Dimensional, Beacon Hill, and U-Cara systems on ranchers, Eichler-style post-and-beams, and full tear-down rebuilds from Country Club to North Los Altos. Call (866) 925-0334 for a free estimate.
Why Los Altos Residents Choose Us for Unilock Service
We aren’t tied to Unilock corporate, and we don’t pretend to be. What we are is a general contractor that has installed and repaired enough Unilock hardscape across Los Altos service area to know how their pavers behave on this city’s clay-heavy expansive soils. That matters more than a logo on a truck. Noel grew up in the Sunshine Gardens neighborhood of South San Francisco, trained at Skyline College in San Bruno, and spent two decades on Peninsula residential sites before founding Millwright Builders. His crews frame, roof, and finish under one contract, which means the paver patio and the downspout drain that keeps it from washing out are the same project, not two phone calls.
We carry OEM Unilock units and matching caps for active lines. When a line’s discontinued and the wall is non-structural, we’ll tell you honestly and match a quality aftermarket block instead of selling you something that doesn’t exist. Our unilock knowledge lives where it counts: in the base compaction, the jointing, and the drainage plan, not in a catalog quote.
Key takeaways:
- Independent Unilock installer: we work exclusively with their systems, but we’re not factory-authorized.
- We plan every Los Altos paver job around lot-coverage limits and heritage oak root zones.
- One contract covers hardscape, drainage, and any structural work attached to it.
- Free estimates with line-item pricing, and fixed quotes that don’t creep.
Styles & brands we work with
Common Unilock Construction Problems We Solve in Los Altos
Los Altos has a specific climate pattern: long dry summers, then a real wet season that follows months of zero rain. That swings moisture through clay soil like a bellows. Here’s what we see on Unilock service in Los Altos Hills and surrounding areas:
- Efflorescence on Brussels Dimensional and Beacon Hill units. The first good winter after a dry summer pulls mineral salts to the surface, leaving that chalky white bloom. We remove it and adjust the drainage that’s feeding moisture into the paver bed.
- Edge spalling at driveway aprons. When base compaction is too thin for Los Altos clay, moisture cycles heave the outer rows and chip the edges where cars turn in. We rebuild the edge with a deeper aggregate base and re-set the border course.
- Polymeric sand washout from downspout discharge. A downspout that dumps onto a paver walkway will blast the joint sand out within one wet season. We reroute the downspout, add a channel drain, and re-sand the joints.
- U-Cara wall batter and cap separation on hillside lots. Steeper Los Altos lots are often drained for summer conditions, not winter storm flow. When the wall leans forward or the caps pop loose, the cause is usually trapped water behind the face.
- Settled pavers over tree roots. Heritage oaks are protected here, and roots don’t stop for a paver field. We design around the root zone, not through it.
Unilock Service in Los Altos: What Local Conditions Mean for Your Equipment
Los Altos runs its own planning and building review on top of Santa Clara County rules, and the city’s site development review treats hardscape as part of the impervious-surface math on your lot. That means a paver driveway or patio isn’t just a hardscape decision; it’s a land-use decision. A 600-square-foot Unilock patio can push a property over its maximum lot-coverage figure, and a paver driveway running under a heritage oak’s drip line will get flagged in design review because the city protects those root zones. We draw the site plan with the pervious/impervious breakdown and tree protection notes before permitting starts. That’s why homeowners looking for Unilock service in Stanford and nearby trust us with complex site plans. It’s the difference between a project that gets approved and one that sits in review for six months. On one Country Club-area rancher near the Los Altos Golf & Country Club, we replaced a cracked concrete driveway with Brussels Dimensional pavers, re-ran base compaction to six inches of aggregate over the clay, and regraded the slope to move water away from the garage. The old slab had heaved from winter moisture and a downspout washout. The new field drains and holds. That’s what the approval process and the soil both demand, and you can’t skip either one.
Unilock Models & Products We Service in Los Altos
We work with the Unilock lines most common on Los Altos lots. Brussels Dimensional pavers for driveways and front walks. Beacon Hill for patios and pool decks. U-Cara and Seneca retaining wall systems for terracing on sloped rear yards. When the run and color are still in production, we use Unilock OEM units and matching caps. When a line’s discontinued, we match a quality aftermarket block only for non-structural walls, and we tell you that up front. We stock a local inventory of common Los Altos colors and accessories, which means small repairs don’t wait on a truck from out of state. For work beyond pavers, our Unilock sales & service expertise covers the full range of their hardscape systems, from driveways to wall caps to jointing.
See the difference
Before
After
Before
After
Before
AfterUnilock Service Pricing in Los Altos
What you’ll pay for Unilock work in Los Altos depends on the paver line, the square footage, the base depth required for your soil, and whether the city’s coverage review demands a different layout. Here’s where the numbers land:
| Service | Typical Range in Los Altos |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Driveway Sealing | $250 – $700 |
Your free estimate includes a written line-item quote, a site plan showing drainage and tree setbacks, and a fixed price. No change orders because the base depth was wrong from the start. Call (866) 925-0334 to schedule.
Serving Los Altos, CA — Our Local Coverage Area
We’re our General Contractor in Los Altos 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. Los Altos planning review treats hardscape and impervious surface as part of the floor-area and lot-coverage math, so a paver driveway or patio often has to be sized to fit under your property’s coverage cap. We include the pervious/impervious breakdown in our plan sets before permitting. Call (866) 925-0334 and we’ll check your lot’s numbers during the free estimate.
That’s efflorescence, mineral salts pulled to the surface by moisture moving through the paver bed after long dry spells. It’s common on Brussels Dimensional and Beacon Hill units in Los Altos. We remove it and fix the drainage that’s feeding the moisture, so it doesn’t come back every winter.
We design around the root zone, never through it. Los Altos protects heritage oaks, and cutting roots to lay pavers will get your project flagged and damage the tree. We set the paver field outside the drip line, use a permeable base where needed, and adjust the layout to fit the tree’s root pattern. Call (866) 925-0334 for a site walk.
If the run and color are still in production, yes: we use OEM units and the repair disappears. If the line’s discontinued, we’ll match a quality aftermarket block only for non-structural areas and tell you exactly what you’re getting. For structural walls, we’ll talk replacement rather than a mismatched patch.
Six inches of compacted aggregate over the native clay, minimum. Los Altos clay expands and contracts with moisture cycling, and anything thinner leads to heaving, edge spalling, and joint failure within a few winters. We re-compact and verify the base before setting the first unit.
Service Areas Near Los Altos
We run Unilock installs and repairs throughout the mid-Peninsula and up the bay. That includes Unilock service in Mountain View, Unilock service in Loyola, plus South San Francisco, San Bruno, and Millbrae. If you’re within 30 minutes of Los Altos, we’ll come out for the estimate.
Book Your Unilock Service in Los Altos Today
We’ll walk your lot, check the soil, map the drainage, and hand you a fixed price. No pressure, no vague allowances. Call (866) 925-0334 to schedule your free Unilock estimate in Los Altos.
Written by Noel Castañeda, Owner at Millwright Builders, serving Los Altos and the Peninsula with our Home Remodeling in Los Altos and Unilock hardscape installation and repair.