Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Unilock Construction in Palo Alto, CA | Rowan Construction Group Palo Alto
We provide independent Unilock installation and repair service across Palo Alto, from the baylands to the foothills. What sets our work apart here is our familiarity with Palo Alto’s 0.45 FAR limit and the drainage puzzles it creates - cantilevered additions and split-level grade changes mean a paver patio or driveway must shed water precisely, or it undermines the structure it serves. Call (650) 446-9092 to schedule a free estimate with a written line-item price before any work starts.
Why Palo Alto Residents Choose Us for Unilock Service
We’ve installed and repaired Unilock systems in Palo Alto since 2007, and we’ve learned that this city’s permitting complexity rewards crews who think like project managers, not just installers. The 12-18 month permit cycles here mean when you finally break ground, you need it done right the first time - no callbacks, no re-dos that push you into another rainy season.
Grant Rowan, our owner, handled the full gut-and-rebuild on a mid-century ranch near Barron Park that required matching original board-and-batten cedar detailing - the same attention to detail we bring to our Kitchen Remodeling in Palo Alto. That job taught him what Palo Alto inspectors look for: documentation, drainage plans, and materials that match the spec submitted. We bring that same discipline to Unilock work - OEM edge restraints, Unilock bedding sand, and polymeric sand installed to manufacturer depth and moisture specs, not generic shortcuts.
We’re not a Unilock dealer or authorized contractor. We’re an independent crew that sources Unilock’s full system - Brussels Block, Beacon Hill, Umbriano, Copthorne - and builds to the unit profiles and jointing requirements those products demand. Our Unilock sales & service page lists our full material depth. Every quote is flat-rate, written, and delivered before anyone picks up a tool. Under Clause 1 of the Haven Standard, that’s non-negotiable.
Common Unilock Construction Problems We Solve in Palo Alto

- Efflorescence bloom on Brussels Block and Beacon Hill pavers. Palo Alto’s expansive baylands clay wicks moisture up through bedding sand and migrates it through the concrete units. The white crystalline deposit isn’t structural damage, but it’s unsightly and it returns if you don’t address the moisture source. We re-grade, improve drainage, and re-lay with proper vapor management.
- Edge spalling and joint creep on Umbriano driveways. When the subgrade wasn’t engineered for seasonal shrink-swell - common on older lots where soil was never compacted to modern standards - the paver mats rack and chamfered edges chip under tire loads. We assess whether the base can be stabilized or if full rebuild is the honest call.
- Polymeric sand washout on Copthorne and Brussels Block patios. Winter storms here can saturate a base for weeks. If sand was installed over wet bedding or during a rainy window, it never fully cures. We strip, dry, and re-sand only when conditions allow proper activation.
- Differential settling at driveway aprons on 1940s-1960s ranch lots in south Palo Alto. Original soil profiles in neighborhoods like Greenmeadow and Ventura were compacted with equipment that wouldn’t pass today’s specs. Unilock’s 8 cm units reveal every dip. We bring in engineered base and proof-roll before laying a single paver.
- Drainage conflicts from FAR-driven architecture. That cantilevered addition or buried basement your architect designed to game the square-footage formula? It often channels roof runoff exactly where you planned your paver patio. We map the water before we map the layout.
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AfterUnilock Service in Palo Alto: What Local Conditions Mean for Your Equipment
Palo Alto enforces a 0.45 FAR cap on standard R-1 lots, and at land values exceeding $3 million for a teardown, every allowable square foot is worth fighting for. Homeowners hire architects specifically to game that calculation, which produces oddly cantilevered additions, partially-buried basements, and split-level designs engineered around the city’s formula rather than conventional framing logic. For Unilock hardscape work, this means the grade around your house may be doing three jobs at once: providing access, managing structural drainage, and maximizing legal square footage - often poorly.
We’ve seen this in Professorville, where a Victorian’s modified roofline sent concentrated runoff onto a Brussels Block walkway that was originally designed for sheet flow. In the foothills near Old Page Mill Road, a buried basement’s waterproofing system discharged directly beneath what the homeowner intended as an Umbriano dining terrace. These aren’t installation errors; they’re site conditions that only make sense if you understand Palo Alto’s zoning math. We measure twice, write it down, then we talk - about where the water goes, where the pavers can actually sit, and whether a concrete alternative might handle the load better. Our Palo Alto service area coverage includes every zone from the R-1 ranch belts to the Professorville historic district’s architectural-review constraints.
Unilock Models & Products We Service in Palo Alto

We work with Unilock’s full residential line, with particular depth on the four systems most common in Palo Alto’s upscale hardscape market:
- Brussels Block - The tumbled, weathered-face classic. We stock OEM edge restraint and the specified bedding gradation for this unit’s thicker chamfer profile.
- Beacon Hill Flagstone - Large-format, slate-textured. Requires precise joint width control; we use Unilock’s recommended spacers and never substitute generic polymeric sand, which can stain the textured surface.
- Umbriano - The exposed-aggregate, color-through unit popular for modern Palo Alto entries. Demands a laser-screed base; any dip telegraphs through the large, flat faces.
- Copthorne - The narrow, herringbone-friendly paver that reads as old brick. Joint erosion is the failure mode here; we use Unilock’s fine polymeric sand, not mason’s sand, and activate it in dry windows only.
We don’t source big-box equivalents. The system’s performance depends on the full assembly - base, bedding, edge restraint, jointing material, and unit - and mixing manufacturers voids any reasonable warranty expectation.
Unilock Service Pricing in Palo Alto
| Service | Typical Range in Palo Alto |
|---|---|
| Paver Driveway Installation | $7,000-$18,000 |
| Paver Patio Installation | $3,500-$11,000 |
| Driveway Replacement | $5,000-$14,000 |
| Concrete Driveway Installation | $4,500-$12,000 |
| Driveway Sealing | $250-$700 |
What drives the cost: base depth and soil condition (expansive clay requires more excavation and engineered fill), access for equipment (tight Professorville lots need hand-work where ranch belts get mini-excavators), and drainage complexity (FAR-driven architecture often adds subsurface drainage that must be tied into the hardscape). Every estimate includes a written scope, a photo record of existing conditions, and a flat price. No change proceeds without a signed change order - the discipline that has kept our projects within a few percent of the agreed number across 4,000-plus jobs. Call (650) 446-9092 for your free estimate.
Serving Palo Alto, CA - Our Local Coverage Area

We’re based in the Palo Alto 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 Palo Alto
It often dictates the grade and drainage conditions your hardscape must work within. Cantilevered additions and buried basements create concentrated runoff points and limited permeable area, so we design the paver layout around water management first. Call (650) 446-9092 and we’ll walk your site with a grade laser.
It’s almost certainly efflorescence, which is soluble salts migrating through the concrete matrix. On Palo Alto’s baylands clay, it’s common and not structurally damaging. We re-grade for drainage, allow the base to dry, and re-lay with vapor-mitigating bedding practices. If the staining is oily or localized, we inspect for a different source. Call (650) 446-9092 for an exact diagnosis - estimates are free.
Yes. Post-and-pier foundation retrofits change the drainage pattern around the house, and we’ve seen previously stable walkways heave after the work is done. We coordinate with your structural contractor’s as-builts and re-grade to the new foundation profile before laying pavers.
Unilock pavers perform well here when the base is engineered for expansive soil - that’s the critical variable, not the surface material. Pavers offer modular repair if settling occurs; monolithic concrete cracks and requires full replacement. We assess your soil profile and recommend honestly.
A standard patio runs 3-5 working days; a driveway with proper base preparation takes 5-8. Permitting adds time in Palo Alto, but that’s outside our scope. We schedule installation only after permits are issued and weather windows are clear for polymeric sand curing. Call (650) 446-9092 to check current scheduling.
Service Areas Near Palo Alto

We handle Unilock hardscape work across the Midpeninsula, including Unilock service in Los Altos, Unilock service in Mountain View, plus Sunnyvale, Woodside, and Cupertino. Each city’s soil profile and permitting environment differs, and we adjust base specs and drainage design accordingly.
Book Your Unilock Service in Palo Alto Today
Call (650) 446-9092 to schedule your free estimate. We’ll deliver a written, line-item price before any work starts, and every visit includes a documented photo record as standard. The 365-Day Done Right Promise applies to every project - if it’s not done right, we make it right.
Written by Grant Rowan, Owner at Rowan Construction Group Palo Alto, serving Palo Alto since 2007.







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