Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Unilock Construction in Tustin, CA | Rowan Construction Group Irvine
We provide independent Unilock paver and retaining-wall installation and repair across Tustin, sourcing genuine Unilock materials and installing to ICPI-certified base specifications without manufacturer authorization. The one thing that makes our Unilock work here different is our familiarity with Tustin’s three-tier housing stock and the environmental clearance protocols required on former Marine Corps Air Station ground. Call Unilock sales & service at (657) 227-2502 to schedule your free estimate.
Why Tustin Residents Choose Us for Unilock Service
We’ve set Unilock products across Orange County since 2007, and our Tustin Kitchen Remodeling experience means Tustin’s mix of housing eras keeps us sharp. Old Town’s pre-1940 bungalows need careful grade work around original foundations. Central Tustin’s 1950s-1970s stucco tracts often have settling driveways where the base was thin to begin with. Tustin Ranch’s 1980s-1990s Mediterranean communities demand exact color matching to HOA standards.
Grant Rowan trained in construction technology at Los Angeles Trade-Technical College before founding this company, and that foundation in structural framing and blueprint reading means we read slab plans before we cut. We don’t guess at what’s under the pavers. Our crews are background-checked and uniformed; a live person answers calls 24/7; and every visit produces a documented photo record you keep, not an upgrade you pay extra for.
Under Clause 1 of the Haven Standard, the price is written before anyone starts. Under Clause 2, no change proceeds without a signed change order. That’s the discipline that has kept our projects within a few percent of the agreed number across 4,000-plus jobs. “Measure twice, build it once, write it down.” We live by it.
Common Unilock Construction Problems We Solve in Tustin

- Efflorescence bloom on Brussels Block and Romanstone - Tustin’s inland heat band, with summer highs hitting 95-100°F, accelerates the wicking cycle that pulls calcium salts to the paver surface. The problem starts when the base wasn’t compacted in proper lifts during original installation, leaving voids where water collects and evaporates repeatedly. We strip the affected area, re-compact the base, and relay with manufacturer-compatible polymeric sand that reduces the capillary draw.
- Polymeric sand washout and joint erosion - Santa Ana wind events drive fine grit through paver joints, especially on driveway aprons and walkways near Tustin’s eastern foothills. Once the sand erodes, the interlock fails and pavers rock underfoot. We clean the joints to proper depth and reinstall with Unilock-compatible polymeric sand formulated for wind-exposed applications.
- Edge restraint failure on Beacon Hill borders - Tustin Ranch and Hillside grading sits adjacent to post-tensioned slab construction on expansive clay soils. Seasonal soil movement pushes pavers outward against the restraint, eventually popping the spikes or bending the aluminum. We excavate, install WallTite/Unilock edge restraint on proper setback, and re-grade drainage to relieve hydrostatic pressure.
- Faded or chipped faces on Town Hall and older Romanstone - UV exposure in Tustin’s hotter inland zone degrades surface color faster than in coastal Orange County. Aggressive pressure-washing compounds the damage by opening the paver face. We assess whether lift-and-relay with matching stock or selective replacement is the honest call, and we teach proper maintenance pressure (under 2,000 PSI, wide fan tip, keep it moving).
- Settling and base failure near garage slabs - On central Tustin’s postwar tracts, original paver base was often 4-inch crushed rock without geotextile separation. Decades of vehicle loading compresses the subgrade. We rebuild the base in 6-inch lifts with plate compaction between each, adding geotextile where clay content demands it.
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AfterUnilock Service in Tustin: What Local Conditions Mean for Your Equipment
Because so much of Tustin sits on old Marine Corps Air Station ground being converted through the Tustin Legacy master plan, our Tustin Bathroom Remodeling and paver crews know that retaining-wall jobs in the area often require documented environmental clearance and utility/slab-plan review before we cut or excavate. The same decommissioned military infrastructure still buried in parts of the city, documented jet-fuel plumes and asbestos-containing base structures, means a standard pre-construction step here would be optional guesswork elsewhere. We pull permits through Tustin’s Community Development Department, coordinate environmental sign-off when the property falls within Legacy boundaries, and review post-tensioned slab plans before any core drilling near Tustin Ranch’s 1980s-1990s tracts. Cutting an unmarked tendon mid-project is a failure mode that catches out-of-area crews who assume conventional slab construction. We don’t assume.
We rebuilt a settling Unilock Brussels Block driveway apron on a 1960s stucco tract home off Red Hill Avenue near Old Town, where years of expansive-clay movement had spread the edge restraint and washed out the polymeric sand joints. We pulled the affected course, re-compacted the base in lifts, reset genuine Brussels Block with fresh polymeric sand and Unilock edge restraint, and re-graded drainage away from the garage slab so the paver field stopped rocking underfoot.
Unilock Models & Products We Service in Tustin

We work with the full Unilock residential line most commonly found in Tustin installations:
- Brussels Block - The tumbled, weathered-face paver seen across Tustin Ranch patios and Old Town walkways. We stock matching units for repair and maintain color-lot records for consistency.
- Romanstone - The cobble-style classic, often used in Tustin’s 1990s-era driveways. Efflorescence and UV fading are the usual issues; we match from current production lots or source reclaimed when discontinued colors are involved.
- Beacon Hill Flagstone - The textured, modular slab popular for pool decks and large patios. Edge restraint and leveling are critical on this format; we use Unilock’s specified bedding course thickness and never shortcut with sand-only screeds.
- Town Hall - The European cobble profile, frequently specified in Tustin Legacy new construction for its formal character. We install to the 45-degree herringbone or running bond patterns Unilock recommends for vehicular loading.
We use genuine Unilock matching pavers, WallTite/Unilock edge restraint, and manufacturer-compatible polymeric sand rather than generic substitutes. For isolated cracks or settled sections we lift-and-relay the affected area. Full replacement only makes sense when base failure or widespread efflorescence can’t be corrected in place.
Unilock Service Pricing in Tustin
| Service | Price Range in Tustin |
|---|---|
| Paver Driveway Installation | $7,000-$18,000 |
| Paver Patio Installation | $3,500-$11,000 |
| Driveway Replacement | $5,000-$14,000 |
What drives the cost: square footage, excavation depth required, base material volume (clay subgrades in Tustin need more imported aggregate), paver unit price by line, and whether environmental clearance or slab-plan review adds pre-construction time. A free estimate from us includes measured site dimensions, substrate assessment, drainage plan, and a written scope with flat price. No “call for a quote” here. Call (657) 227-2502 for your written estimate.
Serving Tustin, CA - Our Local Coverage Area

We’re based in the 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 Tustin
Not if the base, bedding course, and jointing are installed to ICPI spec. Tustin’s inland heat and wind-driven grit do accelerate wear on shortcuts: thin base, improper compaction, or generic polymeric sand. We build to the standard that withstands these conditions. Call (657) 227-2502 for an exact quote on your driveway - estimates are free.
We verify whether the property falls within the former Marine Corps Air Station boundary, check for required environmental clearance documentation, and pull utility/slab plans before any excavation. This is standard pre-construction protocol for Tustin Legacy work, not an add-on service. The same discipline applies to permits and inspections with Tustin’s Community Development Department.
Yes, when the original line is still in production. We source genuine Unilock matching pavers by color lot and maintain stock of common Tustin installations. For discontinued Romanstone or older Town Hall variants, we explore reclaimed inventory or recommend a tasteful transition border that incorporates existing field with current production.
Absolutely. Tustin Ranch’s 1980s-1990s builders routinely used post-tensioned slabs on grade. We pull the slab plans before any trenching, core drilling, or plumbing re-route adjacent to the paver field. Cutting an unmarked tendon is dangerous and expensive. This step separates local crews from out-of-area contractors who assume conventional construction.
Repair works when the base is structurally sound and the damage is isolated: lift, re-compact, relay with matching units and fresh jointing. Replace when base failure extends beyond the visible area, efflorescence has penetrated the full paver body, or the original installation was so deficient that spot fixes would be bandages on a broken foundation. We tell you which side of the line your project sits on. Call (657) 227-2502 for an assessment - estimates are free.
Service Areas Near Tustin

We serve Tustin service area homeowners from our Irvine base, with regular work in Unilock service in Irvine and Unilock service in Lake Forest. We also cover North Tustin, Laguna Hills, and Aliso Viejo for paver installation, repair, and replacement. Each city’s building department, soil conditions, and HOA requirements are familiar territory.
Book Your Unilock Service in Tustin Today
Call (657) 227-2502 to schedule your free estimate. We’ll measure your site, assess your substrate, and deliver a written price before any work starts. That’s Clause 1 of the Haven Standard, and it’s how we’ve operated since 2007.
Written by Grant Rowan, Owner at Rowan Construction Group Irvine, serving Tustin since 2007.







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