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 Grand Terrace, CA | Polaris Contractors
We provide independent Unilock paver and retaining-wall construction across Grand Terrace, from driveway rebuilds off Barton Road to patio work near Richard Rollins Community Park. The thing that separates our Unilock work here from anywhere else in the Inland Empire is the re-build reality: Grand Terrace has no undeveloped land, so nearly every project we take on starts with tearing out a failed surface, correcting the sub-base, and managing the runoff that pours off Blue Mountain in winter storms. If you’re planning a paver driveway, patio, or hillside retaining wall in the 92313, call (855) 473-6535 for a free estimate.
We’re an independent contractor, not authorized, sponsored, or endorsed by Unilock. We specify, install, and repair their systems because the product holds up when the base and drainage are done right. For more on our full Unilock sales & service capabilities, that page covers our approach in depth.
Why Grand Terrace Residents Choose Us for Unilock Service
Rick Sondermann grew up in Corona del Mar and spent three decades building and renovating homes along the Orange County coastline before bringing that experience inland. He learned construction fundamentals at Saddleback College, where estimating and building technology courses taught him something most contractors skip: the material matters less than what’s underneath it. A paver is only as good as the base.
That’s the lens we bring to every Grand Terrace job. We know how Unilock pavers behave on sloped lots because we’ve watched them fail: under-compacted bases, missing drainage, joint sand washed out in the first hard rain. We don’t sell tear-outs when a section rebuild fixes the problem, and we always tell the owner when the sub-base, not the paver, is the real culprit. Do it right the first time, the second time always costs more.
Since we serve the whole Grand Terrace service area and operate as a full-scope general contractor, we can handle the surrounding scope too. A paver driveway often pairs with stucco repair, new siding, or a roof replacement on the ranch homes that dominate this city. One team, full scope.
Styles & brands we work with







Common Unilock Construction Problems We Solve in Grand Terrace
- Base failure on graded slopes. The homes rising toward Blue Mountain sit on slopes where winter runoff channels downhill fast. When a paver driveway or patio was originally built over an under-compacted, poorly drained base, the units creep and heave. Joints open, pavers rock underfoot. We strip the failed section, re-compact, add drainage, and reset with Unilock’s own joint sand.
- Efflorescence and salt bloom on tumbled pavers. Grand Terrace summers bake the pavers dry, then winter rain pulls mineral salts to the surface. The white powder that appears on Brussels Block and other tumbled lines is cosmetic, but owners frequently read it as a failing installation. We explain what it is, clean it properly, and recommend sealing where the lot conditions call for it.
- Polymeric sand washout in driveway and patio joints. Santa Ana winds push debris across exposed driveways, and a single intense storm burst moves more water across a paver surface than most bases are built for. The joint sand washes out, weeds get in, and the bedding layer starts to erode. We re-sand with Unilock’s polymeric product after addressing any grade issues that caused the washout in the first place.
- Retaining-wall block settlement or bulging. Beacon Hill-style wall block holds up fine until water builds up behind it. On Grand Terrace lots rising toward Blue Mountain, hillside drainage behind a wall is often never relieved. The block settles, bulges, or leans. We rebuild the failed section and, more importantly, fix the drainage behind it so the problem doesn’t return.
- Failed surfaces from decades-old concrete. Most 1950s-1970s Grand Terrace ranch homes still have their original concrete driveways and patio slabs. Cracking, spalling, and uneven settlement mean the concrete has to come out before a Unilock system goes in. Demolition, haul-off, and sub-base correction typically drive more of the project cost than the new pavers themselves.
Unilock Service in Grand Terrace: What Local Conditions Mean for Your Equipment
Grand Terrace is roughly 12,000 people wedged between Blue Mountain and the I-215 corridor, and the city is fully built out. There’s no raw land left. Every Unilock project we take here is a re-build over a failed surface: an old concrete driveway, a cracked patio slab, or a retaining wall that gave out years ago. That single fact reshapes how we bid, schedule, and execute work in the 92313. Demolition and haul-off are always in scope. Sub-base correction is the single most important line item. New pavers are what the owner sees, but the real work happens underneath.
Then there’s the mountain. On the slopes below Blue Mountain, winter runoff channels off the fire-hardened hillsides and moves fast through properties. A paver driveway that drains toward the garage is a flood risk in a February downpour. We learned to build drainage channels and to slope away from structures as a habit here, not an upgrade. On one ranch home off Blue Mountain-adjacent slopes in the 92313, we tore out a cracked 1970s concrete driveway and reset a Unilock Brussels Block drive over a re-compacted base with a drainage channel steering runoff away from the garage. We capped the failing hillside retaining wall with Unilock Beacon Hill and relieved the drainage behind it. That drive has held through two winters of Cajon Pass storm bursts.
Unilock Models & Products We Service in Grand Terrace
We work with the Unilock lines that make sense for Grand Terrace homes. Brussels Block is our most common driveway and walkway paver here: tumbled edges, dimensional sizing, and a surface that reads mid-century modern against a stucco ranch facade. We also install and repair Coventry and Uni-Stone pavers, which we see on older Grand Terrace frontages that predate the current product lineup.
For retaining walls and facade work, we carry experience with Beacon Hill wall block and Ledgestone/Rivercrest veneer, both of which suit the stucco-ranch architecture that dominates this city. We use Unilock’s own matching units, caps, and polymeric joint sand so colors and dimensions stay consistent across repairs and new courses. When a wall or drive has failed only at the base or drainage, we rebuild that section rather than sell a full tear-out. Parts and product access follow the same principle as our general contracting work: we’ll guide you to the right material, built to the brand’s specification, installed to ours.
See the difference
Before
After
Before
After
Before
AfterUnilock Service Pricing in Grand Terrace
These ranges reflect what we see in Grand Terrace, where re-build scope and hillside drainage work shape the final number. Every estimate includes a site visit, a written line-item quote, and a conversation about the sub-base and drainage realities on your specific lot.
| Service | Typical Range |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Home Addition | $45,000 – $130,000 |
What drives the cost in Grand Terrace specifically? Demolition and haul-off of the old surface, the depth and quality of the sub-base correction, and whether drainage channels or retaining work are required. A flat lot with a stable base comes in at the lower end. A hillside lot with runoff issues lands higher. Call (855) 473-6535 for an exact quote, estimates are free.
Serving Grand Terrace, CA — Our Local Coverage Area
We’re based in the Grand Terrace 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 Grand Terrace
In most cases, no, not as a lasting installation. Overlaying pavers on cracked, shifting 1950s-1970s concrete transfers every existing crack up through the new surface. We remove the concrete, correct the sub-base, and install from a clean grade. The few exceptions are when the slab is stable and the grade allows for it. Call (855) 473-6535 and we’ll tell you honestly what your driveway needs.
Often yes. On Grand Terrace lots rising toward Blue Mountain, a paver patio cut into a slope creates a new grade that needs to be held, and drainage needs to be routed around it. We assess the slope, existing drainage, and adjacent structures before recommending a Beacon Hill-style wall or a simpler grade adjustment. An on-site look is the only way to know; estimates are free.
The pavers themselves are fired concrete and won’t warp or melt in heat. The wear points are the joints. Santa Ana winds blast dust and debris across surfaces, and intense heat dries out the polymeric sand, making it more likely to erode before the next storm. We re-sand with Unilock’s polymeric product and recommend sealing on exposed lots. Call (855) 473-6535 if your joints are already washing out.
That’s efflorescence, a natural mineral bloom that happens when the hot-dry summer and winter-rain cycle pulls salts to the surface. It’s cosmetic and can be cleaned, though it often returns on unsealed pavers. If the white powder worries you, we’ll inspect it and talk through cleaning and sealing options. Call (855) 473-6535 for an on-site look.
Likely yes. Because Grand Terrace is hemmed in by Blue Mountain and the freeway with no room to expand, the city’s scrutiny on grading, retaining, and drainage is real, especially for additions and second stories over existing ranch homes. If you’re planning a Unilock sales & service project alongside construction, we coordinate the paver and drainage scope with the build so permits and inspections move cleanly. Call (855) 473-6535 to talk through your project.
Service Areas Near Grand Terrace
We run Unilock work throughout the Inland Empire from our base serving Grand Terrace. If you’re in a neighboring city, we cover the full corridor: Unilock service in Moreno Valley for larger lot projects, Unilock service in Temecula for wine-country properties, plus Anaheim, Cypress, Villa Park, and Ladera Ranch.
Book Your Unilock Service in Grand Terrace Today
If your driveway, patio, or retaining wall is failing, the sooner we assess the base and drainage, the cheaper the fix. Call (855) 473-6535 to schedule your free estimate in Grand Terrace. We’ll walk the lot, check the grade, and tell you what the project actually needs. No pressure, no full tear-out upsell. Your project, managed start to finish.
Written by Rick Sondermann, Owner at Polaris Contractors, serving Grand Terrace and the Inland Empire with full-scope construction and independent Unilock service.