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 San Antonio Heights, CA | Toolbox Contractors
We provide independent Unilock paver, wall, and hardscape construction across San Antonio Heights, and the work here is different from Unilock in Upland or anywhere else in the San Bernardino Valley because nearly every lot sits on decomposed granite slopes. That geology drives how we build Unilock driveways, patios, and retaining walls in 91784. We’re not authorized by Unilock, and that independence means we’re free to spec the base and drainage system that actually works on foothill terrain rather than a flatland recipe. Call (855) 382-3257 and Norm Castellano will tell you straight what your hillside project actually needs.
Written by Norm Castellano, Owner at Toolbox Contractors, serving San Antonio Heights and the Inland Empire.
Why San Antonio Heights Residents Choose Us for Unilock Service
Most paver companies in the valley learned their trade on flat lots in Fontana or Unilock in Rancho Cucamonga. Our crew cuts its teeth on the ridge roads above San Antonio Heights, where a paver driveway is only as good as what’s underneath it. Norm Castellano grew up in Muscoy and went through the construction technology program at San Bernardino Valley College before spending two decades framing, roofing, and remodeling across the Inland Empire. He’s the guy who gets called when a previous contractor left a mess, and on Unilock work specifically, he’s seen every way a hillside base can fail.
We stock genuine Unilock units for repairs and expansions so your color and dimension match stays true. We also use aftermarket base materials and polymeric joint sands selected for high-runoff, sloped sites, because the right geotextile and drainage detail matters more than the brand of sand on a 15% grade. That’s the San Antonio Heights difference.
Styles & brands we work with
Common Unilock Construction Problems We Solve in San Antonio Heights
Here’s what we see on a regular basis across 91784:
- Joint sand loss and paver migration on sloped driveways. Santa Ana winds scour open joints in the dry months, then winter rain funnels down driveways and strips what’s left. Pavers drift, edges ravel, and the surface starts to look like it’s sliding down the hill.
- Retaining wall settlement and rotation. When base courses aren’t keyed into decomposed granite or engineered fill, walls lean and blocks crack. This is the single most common failure we see on hillside lots off the ridge roads in San Antonio Heights.
- Surface staining and efflorescence on lighter pavers. Hard-water irrigation runoff and hillside drainage patterns leave white mineral deposits and dark staining on Unilock’s lighter finishes. It’s cosmetic but it’s also persistent without the right sealant and drainage correction.
- Edge restraint failure at grade changes. Where pavers meet a steep slope or transition to a wall, the edge restraint gets undermined after winter rains. Pavers loosen, shift, and start working their way downhill.
- Base settlement from direct-on-granite installation. This is the big one. Pavers laid directly on un-compacted decomposed granite without geotextile settle within a season or two, producing dips, pooling, and displaced units.
Unilock Service in San Antonio Heights: What Local Conditions Mean for Your Equipment
San Antonio Heights is unincorporated San Bernardino County, which means every Unilock hardscape permit goes through County of San Bernardino building and safety, not a city hall. For retaining walls over a few feet in height, the County almost always requires a soils report before they’ll sign off. That’s not a suggestion, it’s the approval path. Flatland contractors who rarely pull permits up here get caught off guard by the geotechnical review, and the project stalls—unlike Unilock service in Montclair where city permits are simpler. We don’t, because we plan for it from day one. We also know that hillside drainage that dumps runoff onto a neighbor’s slope is the fastest way to get a County complaint filed against your project. On a hillside off Euclid Avenue or any of the ridge roads, every square foot of paver changes how water moves. We design for that from the first site walk, not as an afterthought once the units are already down.
Unilock Models & Products We Service in San Antonio Heights
We work with the Unilock product families that show up most often in San Antonio Heights: Brussels Block and Brussels Dimensional for driveways and patios, Beacon Hill for a more textured, premium finish, and U-Cara wall systems for retaining and feature walls. When we’re replacing a few broken units or matching a patio expansion, we order genuine Unilock pavers so the color and dimension line up. For base work, joint sand, and drainage components, we use aftermarket materials built for sloped, high-runoff sites. That combination keeps your project both authentic and engineered for this terrain.
See the difference
Before
After
Before
After
Before
AfterUnilock Service Pricing in San Antonio Heights
What drives the cost on a Unilock project in San Antonio Heights is almost always what’s underneath the pavers. A flat lot in the valley can sometimes get away with a standard base; a 12% grade on decomposed granite needs geogrid, geotextile, compaction lifts, and drainage that a flatland quote doesn’t include. Your free estimate from us includes a site walk to assess grade, drainage, and existing base conditions, so the number we give you is specific to your lot, not a ballpark off the internet.
| Service | Price Range |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Concrete Driveway Installation | $4,500 – $12,000 |
Call (855) 382-3257 for an exact quote on your San Antonio Heights project.
Serving San Antonio Heights, CA — Our Local Coverage Area
We’re based in the San Antonio Heights 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 San Antonio Heights
Yes, in most cases. Because San Antonio Heights is unincorporated, the County of San Bernardino reviews your plans, and for walls over about three feet of height they typically require a geotechnical soils report before approval. The decomposed granite and variable fill on hillside lots makes that report non-negotiable. We coordinate the soils work and design the wall to whatever the report specifies. Call (855) 382-3257 and we’ll tell you if your wall triggers the requirement.
Pavers and concrete are non-combustible, which makes them a strong choice for defensible space in the wildland-urban interface. What matters more up here is how your hardscape directs water during Santa Ana-driven fire season and the winter rains that follow. We design drainage so runoff stays on your lot and off your neighbor’s slope, and we recommend joint stabilization that holds up to high winds. Call (855) 382-3257 to talk through your specific lot.
The base is failing. Pavers don’t shift on their own; the layer underneath them is either under-compacted, missing geotextile, or has no drainage path for the water that pours down your sloped driveway. On a ridge road in San Antonio Heights, the fix is a full excavation to stable subgrade, a geogrid-reinforced base, and a drainage swale to carry runoff away—something Unilock repair in Claremont rarely needs. Patching the surface won’t hold. Call (855) 382-3257 for a site assessment.
Yes. We source genuine Unilock Brussels Block units for expansions so the color and dimension match, whether you’re in a mid-century ranch on lower Euclid or a custom hillside estate higher up. We’ll also check the existing base and joint condition before we lay new units, because adding to a failing base just means two problems instead of one.
Plan on $7,000 to $18,000 depending on the grade, length, and what’s under the existing surface. Steep lots that need geogrid, retaining edges, and drainage swales run toward the upper end. A flat approach off the base of the foothill can land closer to the lower end. Call (855) 382-3257 for a free estimate on your driveway.
Service Areas Near San Antonio Heights
We provide Unilock construction and Unilock sales & service across the San Antonio Heights service area and the surrounding foothill and valley communities: San Bernardino, Muscoy, Highland, Loma Linda, and Colton. For projects further up the pass, see our Unilock service in Hesperia and Unilock service in Corona pages.
Book Your Unilock Service in San Antonio Heights Today
If your pavers are shifting, your wall is leaning, or you’re planning new hardscape on a San Antonio Heights hillside, call (855) 382-3257. Norm will walk your lot, explain what’s actually going on underneath, and give you a straight number. Estimates are free and specific to your property.
Written by Norm Castellano, Owner at Toolbox Contractors, serving San Antonio Heights and the Inland Empire.