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Unilock Construction in Montclair, CA | Square One Builders
We install and repair Unilock paver driveways, patios, and retaining walls across Montclair as a Montclair General Contractor, not a manufacturer-authorized dealer. Almost every Unilock project in the 91763 involves removing an old slab, re-grading the base, and dealing with zero-lot-line setbacks on a narrow 1950s tract lot, so our crews handle the full scope from demolition through final sanding. If you’re pricing a paver driveway or patio in Montclair, call (877) 688-9930 for a free estimate and a straight answer on what your lot actually needs.
Why Montclair Residents Choose Us for Unilock Service
We’ve spent years building and repairing Unilock systems on the post-war tract lots that define Montclair’s housing stock. The work that matters on these properties isn’t glamorous floor work – it’s base prep, edge restraint, and drainage sequencing, and that’s what separates a paver job that lasts from one that shifts after the first wet winter. Brent Calloway, our owner, has been building in San Bernardino and Orange County communities since the late 1990s, and he’d be the first to tell you that the subgrade is the job. The pavers are just what you see.
Montclair homeowners call us because we carry genuine Unilock units – Brussels Block, Cambridge Pavingstones with ArmorTec, Beacon Hill Flagstone, and the Estate Wall retaining systems – along with matching edge restraint and joint sand. We don’t mix molds or substitute generic 60mm pavers on a repair. A partial patch with the wrong unit shows in the color and the thickness, and it fails the same year. We also work with more than 50 material brands across every system of a home, so if your paver project uncovers a drainage problem, a rotted garage apron, or a plumbing issue at the foundation, one contract covers it. For a broader look at what we do across the city, see our Montclair service area coverage and what full-scope project management includes.
We’re known for Unilock sales & service across the Pomona Valley, and the local ones we do best are on Montclair’s angled side yards and alley-access lots, where a paver edge has to hold against a property line with no room for error.
Styles & brands we work with
Common Unilock Construction Problems We Solve in Montclair
- Polymeric sand joint failure on sun-exposed driveways. Montclair’s 90-plus-degree summer days and Santa Ana wind events bake the joint sand on south- and west-facing paver runs until it dries, cracks, and blows out. We remove the failed sand, check the base for movement, and re-sand with Unilock joint sand matched to the paver line.
- Base settlement and lippage at the garage apron. Many of Montclair’s 1950s tract homes sit on shallow slab-on-grade foundations. Where a new paver driveway meets the original garage slab, seasonal foothill runoff erodes the transition zone and pavers start to rock or drop. We re-compact the base and set the transition on a stable gravel shelf.
- Efflorescence and hard-water staining on Brussels Block and Cambridge faces. Pomona Valley water is hard, and when irrigation overspray hits north-facing patio runs that stay damp, white mineral deposits form on the paver surface. We clean the efflorescence, adjust sprinkler throw, and seal only where it makes sense for the paver type.
- Edge restraint separation and paver creep on narrow lots. Montclair is nearly rectangular and landlocked. On narrow 1950s lots where pavers run tight to the zero-lot-line footing, there’s often no room for a proper buried restraint, and the outside course starts to drift. We install aluminum edge restraint set in concrete below grade, inside the property line.
- Teardown-and-regrade on fully built-out lots. With essentially no vacant land inside Montclair’s ~1.1 square miles, every paver project replaces existing hardscape. That means pulling the old slab, re-grading drainage away from the foundation, and filing a permit package that answers the Montclair permit counter’s setback and alley-access questions before any paver goes down.
Unilock Service in Montclair: What Local Conditions Mean for Your Equipment
Montclair’s fully built-out, ~1.1-square-mile boundary means nearly every Unilock driveway or patio we build here replaces an existing hardscape on a narrow 1950s lot. That’s not a detail, it’s the project. You can’t just lay pavers over a cracked concrete driveway and call it done – the old slab has to come out, the subgrade has to be re-compacted, and the finish grade has to be set so water moves away from the house rather than pooling at the garage apron during foothill runoff season. On a job off Holt Boulevard in the 91763 core, we pulled out a cracked original concrete driveway and found the old slab had settled against the footing. We rebuilt with Cambridge Pavingstones with ArmorTec over compacted Class II base, buried aluminum edge restraint inside the property line, and Unilock joint sand. The homeowner got a driveway that drains through runoff season instead of fighting it. This is the difference between a paver installation planned for Montclair and a generic paver pitch that would have failed the first winter.
Unilock Models & Products We Service in Montclair
We install and repair the full residential Unilock line most common on Pomona Valley homes, including Unilock service in Ontario and nearby areas: Brussels Block, Cambridge Pavingstones with ArmorTec, Beacon Hill Flagstone, and the Brussel Dimensional and Estate Wall retaining systems. For repairs, we order genuine Unilock units from the manufacturer’s current molds so color, thickness, and surface texture match the existing installation. We don’t patch a Cambridge driveway with a generic 60mm paver from a supply yard – it shows immediately and it fails at the joint. For most Montclair jobs we keep common Brussels Block and Cambridge replacement units and matching joint sand staged locally, which shortens turnaround on partial repairs and patio re-sands.
See the difference
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AfterUnilock Service Pricing in Montclair
Pricing on Montclair Unilock work is driven by what’s under the pavers more than the pavers themselves. A clean install over prepared base is the low end; a teardown of an old concrete slab, re-grade, and new edge restraint on a zero-lot-line lot is the high end. The ranges below are what we typically quote in the 91763, and we give every client a written line-item estimate before work starts.
| Service | Typical Montclair Price Range |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Concrete Driveway Installation | $4,500 – $12,000 |
| Driveway Replacement | $5,000 – $14,000 |
Every estimate includes the site visit, measurements, and a written scope that identifies the condition of the existing base, the drainage sequence, and any permit-counter items we see before we start. Call (877) 688-9930 to schedule a free estimate – we’ll tell you what your lot actually needs and what it will cost.
Serving Montclair, CA — Our Local Coverage Area
We’re based in the Montclair area and know this community well, and we also provide Unilock service in Upland. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Unilock Construction in Montclair
Yes. We build to the legal property line and set the edge restraint inside it, typically with aluminum restraint set in concrete at the outside course. On zero-lot-line conditions we coordinate the setback and alley-access questions with the Montclair permit counter before we begin, so there’s no encroachment argument after the fact. Call (877) 688-9930 for a site visit and a written answer for your specific lot.
In Montclair it’s almost always one of three things: Santa Ana wind-driven dust abrading the polymeric sand until it cracks, 90-plus-degree heat cycles baking out the moisture that helps the sand bind, or water moving under the pavers and pushing the sand up from below. If water is moving laterally under the patio, no re-sanding will hold until the base drainage is fixed. We diagnose the joint failure first, then re-sand with Unilock joint sand or rebuild the base as needed, offering Unilock repair in La Verne as well. Call (877) 688-9930 and we’ll take a look – estimates are free.
If it’s a chalky white film on the surface, it’s efflorescence from hard Pomona Valley water and mineral salts wicking through the paver, not a structural problem. If the white appears in patches with a rough, flaking texture, that’s spalling and the paver face is deteriorating. We clean efflorescence with the right chemical treatment for the paver type and address the water source – usually irrigation overspray on north-facing runs. If the pavers are spalled, replacement is the honest call, and we match the Brussels Block mold so the patch blends.
We match them. We order genuine Unilock units from the current production molds for Brussels Block, Cambridge with ArmorTec, and Beacon Hill Flagstone, which keeps color and thickness consistent on a partial repair. If the remaining pavers are heavily faded or effloresced, we’ll tell you straight whether a patch will show too much and what a fuller replacement would cost before you commit. Call (877) 688-9930 for a quote on your specific area.
We set the finish grade to move water away from the house and into a drainage sequence that can handle seasonal foothill runoff – typically a minimum 1% slope over compacted base, with surface flow directed to a swale, catch basin, or the rear yard drain, depending on the lot. Montclair sits in the Pomona Valley’s flash-flood corridor, so a flat patio that looks level in July can hold water by January. We’ll walk the grade with you before any base goes down. Call (877) 688-9930 for a free drainage assessment with your paver estimate.
Service Areas Near Montclair
We serve Montclair and the surrounding Pomona Valley communities. If you’re a few blocks over the line, we’re already working there – see our Unilock service in Claremont and Unilock service in Norco pages for details on those areas. We also cover nearby La Verne and parts of Corona for paver and full-scope remodel work.
Book Your Unilock Service in Montclair Today
Start from square one, build it right. If you’re planning a paver driveway, patio, or retaining wall in Montclair, call (877) 688-9930 and we’ll schedule a free on-site estimate. We’ll walk the lot, check the grade, and give you a written number.
Written by Brent Calloway, Owner at Square One Builders, serving Montclair and the Pomona Valley since the late 1990s.