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Unilock Construction in North Tustin, CA | Gold Star Contractors
We provide independent Unilock construction service across North Tustin, from paver patios and driveways to segmental retaining walls on hillside lots. What makes our work here different is simple: North Tustin is unincorporated Orange County, so every wall over 30 inches goes through OC Building & Safety, not a city counter. That permitting path changes how we engineer bases, drainage, and fire-hardened details. Call (833) 382-8544 for a straight answer on your project.

We’re a full-scope general contractor that installs Unilock walls, pavers, and U-Cara terraces the way the manufacturer specs them, then adapts the build to what North Tustin’s terrain and county inspectors actually demand. Our Unilock sales & service work is grounded in the system, not just the catalog. Noel Carranza grew up in Anaheim’s Platinum Triangle and spent years on Orange County job sites before building Gold Star Contractors. That hands-on background means we understand what happens to hardscape when slopes, runoff, and Santa Ana winds all show up on the same lot.
Why North Tustin Residents Choose Us for Unilock Service
Most paver crews can lay a Brussels Block patio. Far fewer have corrected failed Unilock work on canyon-edge lots where the base was too shallow for the grade and the wall started kicking out after one wet winter. North Tustin’s combination of steep terrain, mature trees, and unincorporated permitting filters out contractors who don’t read soil conditions before they dig. We do this work here, on these lots, week after week.
Noel runs jobs the way he’d want them run at his own house: one call, one accountable team, no handoff gaps between the retaining wall crew and the paver crew. We source genuine Unilock units, caps, and joint sand when matching an existing wall or meeting manufacturer specs, and we use quality aftermarket drain gravel and geogrid where they outperform the OEM kit. If a wall is leaning but the units are sound, we reset and re-drain rather than replace. If the base is gone, we rebuild to engineered depth. That’s the repair-versus-replace judgment homeowners in North Tustin call us for.
Styles & brands we work with







Common Unilock Construction Problems We Solve in North Tustin
- Base failure on slopes above 2:1. Unilock pavers migrate and joints open when the compacted aggregate base is too shallow for the grade. This is a routine miss on North Tustin canyon-edge lots where the grade runs steep and someone cheated the base depth to save a day of excavation. We rebuild to engineered depth and the pavers stop walking downhill.
- Retaining wall bulging from hydrostatic pressure. U-Cara and older segmental walls without proper weep holes and drain gravel trap winter storm runoff, kick out at the base, and lean downhill. On North Tustin hillsides, that runoff comes hard after rain events. We reset the units on a geogrid-reinforced base and install drainage that actually moves water away from the wall.
- Ember and wind damage to exposed paver edges. Santa Ana wind events drive embers against dry-stacked wall caps and unsealed joint sand, scorching or displacing the top course. North Tustin sits in an ember-zone foothill climate, so we build caps tight and specify joint sand that holds before the winds show up in October.
- Settlement cracking at patio-to-house transitions. Original 1950s to 1980s flatwork and patio slabs across North Tustin were poured without expansion joints. New Unilock patios tied into them crack within a season. We add proper joints and separation so the new work doesn’t inherit the old slab’s problems.
- Unpermitted hillside additions that surface during a remodel. Many North Tustin hillside homes have older retaining walls or patio enclosures that were never permitted. When we come in for new Unilock work, those older structures often need to be legalized through OC Building & Safety before we can build over or adjacent to them. We handle that process as part of the job.
Unilock Service in North Tustin: What Local Conditions Mean for Your Equipment
North Tustin is unincorporated Orange County. That one fact changes how every Unilock retaining wall and paver project gets built here. There is no city building counter to walk into. Permits come from OC Public Works and OC Building & Safety, and any segmental wall over 30 inches tall triggers a review that often requires a soils report. Neighboring Tustin or Santa Ana lots don’t carry that same requirement. On a hillside lot off Cowan Heights Drive, our crew rebuilt a failing 1970s segmental retaining wall that had been bowing under winter runoff. We reset the U-Cara units on a geogrid-reinforced base, added drain gravel and weep holes, and capped it with Unilock wall caps matched to the home’s original stone. The homeowner passed OC Building & Safety’s hillside inspection and gained a usable ember-hardened terrace above the canyon edge. That project wouldn’t have been built the same way two miles west in Tustin. The county’s hillside drainage math and fire-hardening requirements shape every decision, from base depth to cap installation.
Unilock Models & Products We Service in North Tustin
We work with the Unilock lines that show up most often on North Tustin properties: the U-Cara Multi-Face Wall System for terraced retaining walls, Brussels Block for paver patios and walkways, Beacon Hill for a more finished paver look, and Techo-Bloc Blu 60 as a Unilock-compatible slab for larger driveway and entertainment surfaces. Our parts approach is practical. We source genuine Unilock wall units, caps, and joint sand when you’re matching an existing wall or the manufacturer spec demands it. For drainage gravel and geogrid, we use quality aftermarket materials that outperform the OEM kit on hillside installations. Local suppliers across Orange County, including those serving Unilock in Villa Park, carry what we need, so North Tustin turnaround stays fast without compromising on the actual system.
See the difference
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AfterUnilock Service Pricing in North Tustin
Pricing for Unilock work in North Tustin tracks with the scope and the lot. Hillside access, drainage corrections, and county-required soils reports push costs toward the upper end of these ranges. Here’s what we see in this market:
| Service | Typical Cost Range |
|---|---|
| Paver Patio Installation | $3,500 – $11,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
| Driveway Replacement | $5,000 – $14,000 |
| Home Addition (adjacent scope) | $45,000 – $130,000 |
What drives the number: base depth on your slope, whether a soils report is required, drainage upgrades, and how much old flatwork needs to come out. A free estimate means we walk the lot, check the grade, and give you a written line-item number. Call (833) 382-8544 to schedule one.

Serving North Tustin, CA — Our Local Coverage Area
We’re based in the North Tustin 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 North Tustin
Does a Unilock retaining wall in North Tustin need an OC Building & Safety permit?
Yes, if the wall stands over 30 inches tall, you need a permit and inspection through OC Building & Safety, and hillside walls often trigger a soils report requirement. We pull the permits and manage the inspection path as part of the project. Call (833) 382-8544 and we’ll tell you what applies to your wall.
Can you match the existing Unilock wall and pavers on my 1980s North Tustin patio?
In most cases, yes. We source genuine Unilock units and caps in the original color and profile where they’re still available, and we carry aftermarket options for discontinued lines. The match gets harder if the original units have decades of sun fading, but we’ll show you samples before we commit.
How do Unilock service in Santa Ana winds affect Unilock paver patios and wall caps here?
They drive embers against dry-stacked caps and unsealed joints, scorching or displacing the top course. We build caps tight and specify joint sand made to hold through wind events. If your existing patio has wind-damaged edges, call (833) 382-8544 for a repair estimate.
Why do North Tustin Unilock patios crack where they meet the house?
The original 1950s to 1980s flatwork was poured without expansion joints. When new pavers tie directly into that old slab, they crack as the slab moves. We add proper expansion separation so the new patio doesn’t inherit the old concrete’s movement.
What does a Unilock paver driveway cost in North Tustin?
Expect $7,000 to $18,000 depending on square footage, grade, access, and whether we’re removing an old concrete driveway or starting fresh. Hillside lots with steep access run higher. Call (833) 382-8544 for an exact quote, free.
Service Areas Near North Tustin
We serve North Tustin service area clients across ZIP 92711 and the surrounding foothill communities. Our Unilock work also reaches nearby areas including Unilock service in Montclair and Unilock service in Mead Valley, along with Corona, Norco, and Jurupa Valley. If your lot sits on a slope, call us.
Book Your Unilock Service in North Tustin Today
One call, done right, that’s the only way we know how to run a job. Call (833) 382-8544 to schedule your free estimate. We’ll walk the lot, check the grade, and give you a written number before any work starts.
Written by Noel Carranza, Owner & General Contractor at Gold Star Contractors, serving North Tustin and Orange County.