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Unilock Construction in Sunnyvale, CA | San Bernardino Contractors
We provide independent Unilock paver, wall, and permeable hardscape installation and repair throughout Sunnyvale, from 94085 up through 94088, as your Home Remodeling in Sunnyvale team. The thing that separates our Unilock work here is simple: we design around Sunnyvale’s single-story overlay zones and ADU lot-coverage rules before the first base course is compacted. If you’re planning a Unilock patio, driveway, or retaining wall in Sunnyvale, call (855) 473-5620 and we’ll walk the lot with you.
Unilock gets specified because it holds up to decades of wet-dry cycling better than most concrete pavers on the market. But the product only performs if the subgrade beneath it is graded, compacted, and reinforced for the specific ground it sits on. That’s where San Bernardino Contractors does things differently. We know Sunnyvale clay, we know the seismic exposure, and we know what the city’s permitting desk will flag before you spend a dollar on pavers. Unilock sales & service is one part of our broader whole-home scope, but we treat hardscape like structural work because in this valley, it kind of is.
Why Sunnyvale Residents Choose Us for Unilock Service
Ruben Castillo grew up watching his uncle reroof houses and frame garages on a shoestring budget in San Bernardino’s Westside, and that education taught him one thing that applies to every Unilock job in Sunnyvale: the material only matters if what’s underneath it is right. A paver is a finish surface. The base, the compaction, the drainage plane, and the edge restraint are the actual structure. Ruben has spent the better part of two decades framing, pouring concrete, and running whole-home remodels across the Inland Empire, and he treats a Unilock driveway with the same load-path discipline he’d apply to a second-story addition.
We’re a full-service general contractor, not a paver installer doing one trade. That means when your Unilock patio needs to tie into a James Hardie siding job, or your paver driveway has to drain around a new ADU foundation, we’re already the crew handling both scopes. No subcontractor shuffle. Sunnyvale service area coverage is our home turf, and we know which inspectors ask for what.
Styles & brands we work with







Common Unilock Construction Problems We Solve in Sunnyvale
- Settled and shifted pavers after winter rains. Sunnyvale’s flat mid-century lots in 94086 and 94087 leave rainwater nowhere to go unless the subgrade is graded intentionally toward the street or a drainage swale. When base compaction is skipped, or the original contractor didn’t add a geotextile separator between the clay and the aggregate, paver edges drop and the whole field starts to look wavy. We lift, re-grade, add the separator, and compact in lifts before anything goes back down.
- Cracked Unilock Estate Wall units after seismic activity. The San Andreas and Hayward faults are close enough that retaining walls in Sunnyvale shift more than walls in, say, San Jose’s flat eastern edge. Estate Wall block installed without geogrid reinforcement or flexible mortar joints transfers ground movement straight through the wall face. We rebuild with proper reinforcement and drainage so small tremors don’t turn into leaning walls.
- Spalled edges on Beacon Hill pavers. That tumbled finish looks great, but on Sunnyvale driveways with daily vehicle traffic, the softer edges erode after repeated wet-dry cycles if the polymeric joint sand isn’t replenished every couple of years. We see it most on 94087 driveways where cars turn tight into narrow lot frontages. Joint sand is maintenance, not a one-time application.
- Permeable Unilock systems that stop draining. Fine silt from bare soil around an unlandscaped ADU construction zone clogs the voids in permeable pavers faster than most homeowners expect. In Sunnyvale, where ADU construction is constant, this is a recurring issue. Ponding on permeable pavers is almost always a clogging problem, not a product failure. We clean, re-bed, and often add a pre-treatment strip to keep the system breathing.
- Root heave under paver driveways near mature trees. Older Sunnyvale neighborhoods in 94087 have huge mature trees planted tight to the lot line. Roots travel under driveways and lift paver courses. We cut root barriers and re-compact the base so the new surface stays flat.
Unilock Service in Sunnyvale: What Local Conditions Mean for Your Equipment
Here’s a fact about Sunnyvale that changes how every hardscape project gets designed: the city’s single-story overlay zones and its own ADU ordinance mean lot coverage is not an afterthought, it’s the starting point. A paver patio or driveway expansion that would sail through permitting in San Jose can trigger setback review, floor-area-ratio calculation, and neighbor-privacy scrutiny here. This is especially true on the small 1950s and 60s ranch lots west of Murphy Avenue, where a detached ADU plus a paver driveway plus the original house can push you past the city’s lot-coverage cap. An experienced contractor sees that coming and designs the Unilock layout to fit the permitted envelope before anyone digs. If your hardscape pushes you over the coverage limit, the city won’t approve it, and you’ve just bought pavers you can’t legally install.
On a 1958 ranch in the 94087 ZIP near Cumberland Elementary, we removed a failing asphalt driveway and installed a Unilock Brussels Block paver driveway with a permeable base because the lot had no place for a dry well. The original concrete apron had cracked from root heave and winter ponding. We re-graded the subgrade, added a geotextile separator, and compacted in lifts. The finished drive now sheds water toward the street instead of the garage slab, and the lot-coverage math worked because the permeable system counts differently in the city’s stormwater calculations. That’s the kind of local knowledge that doesn’t show up on a manufacturer spec sheet.
Unilock Models & Products We Service in Sunnyvale
We install and repair the full range of Unilock systems, but most of our Sunnyvale work lands on four product lines: Brussels Block for driveways and walkways where traditional cobble aesthetics matter, Beacon Hill for upscale patios with its tumbled finish, Estate Wall for retaining walls and seat walls, and Thornbury for a more modern flagstone look. Each line behaves differently under Sunnyvale clay and seismic conditions, so we stock OEM units and accessories for all four to keep repairs moving without waiting weeks for a color match from the manufacturer.
When a section fails, we always ask whether it’s repairable before we quote a full replacement. Most cracked or settled Unilock sections can be lifted, re-based, and re-set with OEM units so the color and thickness match the existing field. We source aftermarket base materials and polymeric sands that meet or exceed Unilock’s specs because the base layer doesn’t carry a brand name, it carries the load.
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AfterUnilock Service Pricing in Sunnyvale
Pricing for Unilock work in Sunnyvale breaks into two common scopes. A paver patio runs $3,500 to $11,000 depending on square footage, base conditions, and whether we’re adding retaining walls or drainage. A paver driveway runs $7,000 to $18,000, with the upper end reflecting permeable bases, root barriers, or heavy clay subgrade that needs more excavation. Your free estimate includes a site walk, soil check, and a written line-item quote so you can see exactly where the money goes.
| Unilock Service | Typical Sunnyvale Range |
|---|---|
| Paver Patio Installation | $3,500 – $11,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
Sunnyvale clay and seismic requirements mean some jobs need extra base depth or geogrid that a simpler job in another city wouldn’t touch. We’d rather quote it accurately the first time than hand you a change order after the excavator shows up. Call (855) 473-5620 and we’ll get you real numbers.
Serving Sunnyvale, CA — Our Local Coverage Area
We’re a Sunnyvale 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 Sunnyvale
The most common cause on Sunnyvale’s flat ranch lots is inadequate base compaction combined with water ponding against the pavers. When the subgrade isn’t graded away from the house, winter rain saturates the clay and the base settles unevenly. We lift the affected section, re-grade the subgrade, add a geotextile separator if it’s missing, and compact in lifts so the repair doesn’t re-settle next winter. Call (855) 473-5620 for a free paver assessment.
Yes, and this is the question we wish more homeowners asked before buying pavers. Sunnyvale’s single-story overlay zones and its ADU lot-coverage rules mean a patio or driveway can push your total impervious coverage past what the city allows. We design hardscape layouts around the permit envelope first so you don’t end up with a stack of Unilock pallets and a denied permit. We can check your lot’s coverage math before you commit.
They can, but only if the base is built for it. Sunnyvale’s clay expands when wet and shrinks when dry, which stresses any rigid surface above it. The fix is depth and material: we over-excavate, add a geotextile separator, and compact aggregate in lifts to create a stable bridge over the clay. Skip that step and even premium Unilock pavers will move. We build for the soil, not just the catalog photo.
Brussels Block is the tougher choice for driveways because its squared edges and denser surface handle vehicle loads and turning stress better than Beacon Hill’s tumbled, softer-edge finish. Beacon Hill is beautiful on a patio, but on a Sunnyvale driveway with tight turns and daily traffic, those tumbled edges erode faster unless the joint sand is maintained diligently. For driveways, we usually recommend Brussels Block. For patios, either works. We’ll show you samples so you can see the difference in person.
Most post-seismic wall damage is repairable. A leaning Estate Wall with cracked face units usually means the original build lacked geogrid reinforcement or had poor drainage behind the wall, not that the block itself failed. We dismantle the affected section, rebuild with proper geogrid layers and a drainage column, and re-set OEM units where possible. Full replacement is only needed when the wall has shifted beyond structural recovery. We’ll tell you honestly which one you’re looking at after the site walk.
Service Areas Near Sunnyvale
We serve Sunnyvale and the surrounding neighborhoods including Unilock service in Loyola and Unilock service in Mountain View, plus 94085, 94086, 94087, and 94088. If your hardscape sits near a city line, we’ll confirm the permitting jurisdiction before we quote so there aren’t surprises at the counter.
Book Your Unilock Service in Sunnyvale Today
If your Unilock pavers are settling, cracked, or draining poorly, or you’re planning a new patio or driveway in Sunnyvale, call (855) 473-5620. We’ll schedule a free site walk and give you a written estimate with real numbers. As Ruben says: “If it’s not built right the first time, you’re just paying for it twice.”
Written by Ruben Castillo, Owner at San Bernardino Contractors, serving Sunnyvale and the broader Silicon Valley.