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
Why Corona Homeowners Choose Unilock Construction
We provide independent Unilock construction, repair, and installation service across Corona, specializing in Brussels Block, Beacon Hill, Cambridge Pavingstones with ArmorTec, and Estate Wall retaining wall systems. We’re not a Unilock dealer and we’re not authorized by the manufacturer. What we are is a general contractor that has torn out and rebuilt enough failing paver installations in Corona to know exactly where they go wrong: thin base prep over expansive clay, missing drainage, and polymeric sand that washes out the first wet winter. Our crews handle tear-out, sub-base correction, compaction, and re-laying on hardscapes that other installers walked away from. Call (877) 688-9930 for a straight assessment of what’s failing and what it takes to fix it.
Why Trust Square One Builders for Your Unilock Construction?
Pavers look simple. They’re not. A Unilock patio or driveway carries vehicle loads, slope pressure, and Corona’s shrink-swell clay soil, and when the base underneath isn’t right, the surface tells you within two or three years. Our crews have torn out hundreds of paver installations in Corona, and we consistently find the same three problems: sub-base too thin, joints left unsanded, and water with nowhere to go. Fix those and a Unilock surface stays flat and locked for decades.
Brent Calloway grew up in Midway City and spent years learning framing, concrete, and finish work through Golden West College’s Construction Technology program and on job sites where the only way to learn was to do the work. That background means we approach Unilock service the way we approach every system we touch: diagnose the actual failure, fix what’s underneath, and spec the right material for the job. We’re a full-scope general contractor, not a paver-only crew, so when a Unilock driveway failure traces back to a drainage problem at the foundation or a retaining wall issue at the property line, we can address the whole picture under one contract. Start from square one, build it right. As an independent Unilock service provider, we answer only to the homeowner, not to a brand quota.
Styles & brands we work with
Common Unilock Construction Problems We Fix in Corona
- Polymeric sand washout on Brussels Block joints. Corona’s winter rain comes fast and hard, and when joints weren’t filled correctly or the base doesn’t drain, the sand blows out and washes into the yard. Weeds and ants move in next. We pull the failed sand, re-fill with the right grade, and correct the drainage below so it doesn’t recur every season.
- ArmorTec surface spalling and efflorescence on Cambridge pavers. Spalling means water is ponding on the surface and soaking into the paver’s top layer. Efflorescence, that white chalky haze, comes from moisture migrating through and leaving salts behind. Both are almost always a base-compaction failure, not a manufacturing defect. When the water can’t drain away from the surface, the paver pays the price.
- Settling and lippage at driveway aprons on Beacon Hill installations. The apron where the driveway meets the street takes the most load and the most water. When the Class II base was laid thin or never compacted in lifts, the pavers settle unevenly and create trip edges. We’ve rebuilt dozens of Corona driveway aprons where the original installer skipped proper compaction to save a day of machine time.
- Estate Wall blockface cracking and wall lean on sloped lots. A retaining wall on a Corona foothill parcel has to hold back real earth pressure. When the original wall was built without geogrid layers or the weep drainage got blocked, the wall starts to lean and the block faces crack under the load. The fix is not stacking new blocks in front. The fix is rebuilding the wall properly, with the grid and drainage the slope demands.
- Matching discontinued Unilock colors and profiles. We see this all the time in Corona’s older neighborhoods and newer tracts alike. A patio built ten years ago needs patches, but that exact color lot is no longer in production. The right move is honest: source a close-profile match from an alternate line and tell the homeowner clearly what’s matched and what isn’t. We never pass off a different color lot as the same.
Unilock Parts & Our Repair-vs-Replace Approach
When a Unilock paver or wall block is still in production, we order genuine units from the manufacturer’s current color lots and match the profile exactly. No shortcuts there. When a color has been discontinued, we source a close-profile paver from an alternate line and show the homeowner the comparison before any unit goes in the ground. We don’t pretend a similar color is the same color. That’s how a small patch becomes a big regret three years later.
Repair-versus-replace is a judgment call, and we make it honestly. If the base is sound and the units are intact, we repair: pull sections, re-grade, re-compact, re-lay, re-sand. The original paver goes back in. If the base has settled, the wall is leaning, or the drainage has failed, a patch job just buys you another season or two. We’ll tell you which one you have, and we’ll show you why. We stock common polymeric sand grades, paver edge restraints, and core Unilock profiles locally for faster turnaround on repairs across Corona. Call (877) 688-9930 if your hardscape is failing and you want to know whether it needs a fix or a rebuild.
Our Unilock Service Process – Step by Step
- 1
Diagnose the failure. We walk the surface, identify settlement patterns, check edge restraints, and test for drainage issues. We look for the same things every time: ponding, joint erosion, base exposure at edges, and wall lean. The diagnosis tells us whether we’re repairing or rebuilding.
- 2
Repair or install with proper base work. For repairs, we pull only what’s failed, re-grade the sub-base, add and compact the base in lifts, and re-lay the original pavers. For new installations, we excavate to the right depth for the load, compact the native soil, install geotextile where needed, and build the base up in multiple compacted lifts before a single paver goes down.
- 3
Test drainage and joint integrity. This is the step most installations skip. We run water over the completed surface and verify it sheets away from the house and toward the right drains. Joint sand goes in only after the surface passes. A paver installation that drains wrong will fail, no matter how good it looks on day one.
- 4
Walk the finished work with you. We show you what we fixed, what we replaced, and what to watch for over the next rainy season. Every Unilock repair and installation we do in Corona carries our workmanship warranty, with the terms stated clearly in writing before we start.
Unilock Products We Service & Install in Corona
We service and install the full range of Unilock hardscape products across Corona’s 92882, 92883, 92877, and 92878 ZIP codes, and also provide Unilock in Westminster. Our crews work daily with Brussels Block for patios and walkways, Beacon Hill for driveway applications and larger pavers, Cambridge Pavingstones with ArmorTec for surface durability on high-traffic areas, and Estate Wall retaining wall blocks for sloped lots and terraced landscaping. We stock common edge restraints, polymeric sand, and base materials locally, and we order Unilock units as needed for the specific color and profile on your job. That means turnaround on repairs is faster, and installations aren’t delayed waiting on material from across the country.
See the difference
Before
After
Before
After
Before
AfterWe Also Service These Brands
Square One Builders is not a single-brand shop. Our full-scope remodeling work spans KraftMaid and Wellborn cabinetry, Cambria and Silestone countertops, Kohler plumbing fixtures, and roofing from GAF, CertainTeed, and Owens Corning. If your Unilock patio project is part of a larger Corona remodel, we can manage the whole scope under one contract, from the pavers up to the roof.
How Much Does Unilock Construction Cost in Corona?
Unilock paver work in Corona runs on real labor, real base material, and real excavation time. Here are the market ranges we quote for Unilock-specific projects in this area:
| Unilock Service | Corona Price Range |
|---|---|
| Paver Patio Installation | $3,500 – $11,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
| Driveway Replacement | $5,000 – $14,000 |
| Driveway Sealing | $250 – $700 |
These are project ranges, not fixed quotes. Your number depends on square footage, slope, soil conditions, access for excavation equipment, and whether the existing base can be salvaged or needs full removal. A flat-lot 92880 patio is simpler than a hillside 92883 retaining wall with fire-zone review. Call (877) 688-9930 to schedule a free estimate and get a written, line-item quote specific to your Corona property.
FAQs – Unilock Construction Service in Corona
If the color is still in production, yes, we order genuine units from the current lot and profile-match them to your existing pavers so the patch blends as closely as the manufacturer allows. If the color has been discontinued, we source a close-profile alternative from a different line and show you the comparison before ordering. We won’t install a mismatched lot and call it good. Call (877) 688-9930 and we’ll tell you which situation you’re in.
The sand is washing out because water is moving through the joints faster than the sand can lock up, which means the base underneath is saturated or the surface doesn’t drain properly. Polymeric sand fails when it’s asked to act as a drainage system. The real fix is correcting the base drainage and re-grading the surface to sheet water away from the house. We diagnose that before re-sanding, because re-sanding without fixing drainage means you’ll be doing it again next spring.
Yes, and in most hillside cases the grid is not optional. Estate Wall blocks hold back lateral earth pressure, and on a Corona slope that pressure increases with every foot of retained height. Geogrid layers anchor the wall back into the hillside and carry the load. Without them, the wall leans, the block faces crack, and the whole thing eventually has to come down and get rebuilt correctly. We include geogrid in every retaining wall design where the slope and height call for it, and we document it in the permit drawings.
You can, but only if the base is built for vehicle loads. A paver driveway in Corona needs a deeper excavation than a patio, a properly compacted native sub-grade, a Class II road base compacted in multiple lifts, and edge restraints that won’t shift under tire pressure. Installations that treat a driveway like a patio are the ones that develop ruts and lippage within two or three years. We build paver driveways on Beacon Hill or Cambridge profiles with the base depth to match what’s parked on it. Call (877) 688-9930 for a quote on your driveway.
Most paver patio installations in Corona take three to seven working days from excavation to final sand. Paver driveways run longer, usually one to two weeks, because of the deeper excavation, heavier base compaction, and larger surface area. Retaining wall rebuilds depend on height and access. Weather and soil conditions on your specific lot can shift the schedule, and we’ll give you a clear timeline in writing before work starts.
No. We’re an independent contractor, not a Unilock dealer or authorized installer. That independence means we recommend what’s right for your Corona property, whether that’s a genuine Unilock unit, a close-profile alternative, or a different hardscape system entirely. We don’t answer to a brand quota, and we don’t get paid to push any product. We answer to the homeowner standing next to us.
Book Your Unilock Service in Corona, CA
If your Unilock patio is settling, your driveway is rutting, or your retaining wall is leaning, don’t wait another rainy season. Call Square One Builders at (877) 688-9930 to schedule a free assessment of your Unilock hardscape in Corona. We’ll walk the site, diagnose the real problem, and give you a straight answer on repair versus replacement, with a written line-item quote before any work starts.
Written by Brent Calloway, Owner & General Contractor at Square One Builders, serving Corona, Unilock in Stanton, and the surrounding Inland Empire since 1996.