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Unilock Construction in Twin Lakes, CA | Timberline Contractors
We provide independent Unilock paver and retaining wall installation across Twin Lakes, California, from driveways to backyard patios on those tight mid-century bungalow lots. We’re not a Unilock subsidiary or authorized dealer, but we specify genuine Unilock products by name and build to their published base and compaction standards. What makes our Unilock work different in Twin Lakes specifically: we design around the county-plus-coastal review and the sandy, high-water-table ground that neighbors in Santa Cruz proper don’t always face. Call us at (866) 253-5808 for a free estimate on your project.

Why Twin Lakes Residents Choose Us for Unilock Service
Nelson Fung, our owner and general contractor, is the kind of guy who will explain exactly why a paver job on a lakeside lot needs a deeper excavation than the same job three blocks inland. He learned the trade formally at Los Angeles Trade-Technical College before spending years on jobs ranging from Eastside bungalow remodels to commercial builds. That background informs how we approach Unilock installations in Twin Lakes: methodically, with attention to the substrate before the surface. We’ve set Unilock pavers on lots where the water table sits high enough to see in a shallow test pit. We know what that means for base preparation, and we don’t skip the extra depth because it costs more. Do it right the first time or explain yourself twice.
Our customers don’t want a contractor juggling five different trades. They want one team accountable for the whole project. With Timberline Contractors, the paver work, the drainage, any concrete work, and the finished hardscape all fall under one contract. We install genuine Unilock pavers, edge restraints, and polymeric joint sand so the system stays under one manufacturer’s spec from base to surface. And we’re familiar with the Twin Lakes permitting landscape: county building permits, California Coastal Commission review, and the small-lot realities that shape every project here.
We also offer Unilock sales & service as part of our broader hardscaping work, which means you’re getting a team that understands these products well beyond the catalog page.
Styles & brands we work with







Common Unilock Construction Problems We Solve in Twin Lakes
Here’s what shows up in our phone calls from Twin Lakes homeowners, in order of frequency.
- Efflorescence bloom on Brussels Block and similar concrete pavers. Twin Lakes sits in the fog belt, and when coastal fog keeps paver surfaces damp on lots near the lakes where base drainage is marginal, the white mineral bloom shows up on Brussels Block especially. We clean it, correct the drainage issue, and re-sand with the right polymeric product so it doesn’t return with the next fog season.
- Base settlement and rutting on paver driveways meeting sandy soil. The soil here near the lakes is sandy and the water table is high. A driveway base that wasn’t excavated deep enough or compacted in lifts will show lipping at the joints within a season or two. We rebuild those bases properly, usually going deeper than the original install.
- Joint sand washout and edge restraint failure on Pisa2 and Beacon Hill patios. Winter storms, downspouts that were never rerouted, and fog-driven moisture keep the subgrade saturated. Pisa2 and Beacon Hill Flagstone edges fail first when the restraints shift. We re-set edges, fix the drainage, and re-sand the joints.
- Staining and algae on Copthorne tumbled pavers. Tight bungalow yards with tree litter and shade hold moisture. Copthorne’s tumbled surface picks up algae stains fast in those conditions. We address the shade and drainage issues rather than just pressure-washing the stain back every six months.
- Spalling on older Unilock installations that were sealed poorly. On some bungalow patios from the last decade, a bad sealer trapped moisture inside the pavers and the surface is now flaking. We remove the failed sealer, assess the paver condition, and either restore or replace individual pavers rather than ripping out the whole patio.
Unilock Service in Twin Lakes: What Local Conditions Mean for Your Equipment
Here’s the thing about Twin Lakes that most contractors from inland miss: this community sits in the unincorporated county “donut” wrapped by the city of Santa Cruz, so a paver driveway or patio that changes impervious coverage on your lot can trip county building permits plus California Coastal Commission review on the same small bungalow lot. The design has to account for drainage and runoff because the lakes and the high water table are literally right there. On a narrow mid-century lot off 7th Avenue near the harbor, our crew tore out a cracked concrete apron and set a Unilock Brussels Block driveway. We excavated extra depth to reach stable base above the sandy water table, graded runoff away from the lakeside, re-set the edge restraints, and used polymeric joint sand. The county-plus-coastal review meant we locked the impervious-coverage plan before any material landed on site. That driveway now drains cleanly through a wet winter instead of lipping at the joints. A contractor who doesn’t know the Twin Lakes permitting layer will bid the job like it’s any inland driveway, and the homeowner finds out the hard way when the permit stalls.
For the broader picture on how we serve this area, see our Twin Lakes service area page.
Unilock Models & Products We Service in Twin Lakes
We install and repair the Unilock product lines most common on Twin Lakes lots: Brussels Block for driveways and walkways where you need a traditional cobble look; Beacon Hill Flagstone for patios and pool surrounds with that tumbled, irregular edge; Pisa2 for retaining walls and raised planter beds on sloping bungalow yards; and Copthorne for pathways and accent areas where a weathered stone appearance fits the mid-century coastal aesthetic. For Pasatiempo Unilock service, we bring the same product expertise to hillside installations with their own drainage considerations. We use genuine Unilock edge restraints and matching polymeric joint sand so the entire system stays under one manufacturer’s spec. For repairs, we’ll reset and re-sand existing pavers when they’re structurally sound rather than pushing a full replacement. We only recommend a rebuild when the base is compromised or the water-table problem is systemic. If a specific paver is no longer in production, we’ll tell you directly and discuss matching options instead of installing an off-brand close-enough.
Our coverage extends to neighboring markets as well. We provide Unilock service in Morgan Hill and Unilock service in Capitola for homeowners along the bay.

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AfterUnilock Service Pricing in Twin Lakes
Paver work in Twin Lakes is priced by square footage, base depth, access, and permitting complexity. The coastal review layer on top of county permits can add time and design revisions, but it rarely adds to our project estimate beyond the actual work required. Here’s where our market-calibrated ranges land.
| Service | Typical Range |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Driveway Replacement | $5,000 – $14,000 |
Your free estimate includes a site walk, a test look at the soil and existing base, and a written line-item quote. We don’t pull numbers from a square-foot multiplier and call it a bid. Call (866) 253-5808 to set one up.
Serving Twin Lakes, CA — Our Local Coverage Area
We’re based in the Twin Lakes 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 Twin Lakes
Yes. Twin Lakes is unincorporated county land wrapped by Santa Cruz, so a paver driveway or patio that changes impervious coverage on your lot can trigger county building permits plus California Coastal Commission review on the same small lot. We handle the paperwork and lock the impervious-coverage design before any material lands. Call (866) 253-5808 and we’ll walk you through what your specific lot will face.
The coastal fog keeps paver surfaces damp on lots near the lakes where base drainage is marginal, and the high water table keeps moisture wicking up through the paver bed. Efflorescence is that white mineral bloom, and it’s common here on Brussels Block. We clean it, correct the drainage, and re-sand with the right polymeric product so it stops coming back. If you’re seeing it now, call (866) 253-5808 for an assessment.
Yes, but the base prep is different. The sandy soil and high water table here mean we typically excavate deeper than a standard inland paver job and compact in lifts until we reach stable bearing. Skip that step and you’ll see lipping at the joints within a couple of seasons. We test as we go and show you what we’re working with.
We do. Edge restraints and polymeric joint sand are part of the Unilock system spec, and we keep them from the same manufacturer so your pavers, edges, and joints work as one unit. We don’t substitute a generic restraint or sand that voids the system warranty and fails in our coastal moisture.
Yes. If the pavers are structurally sound, we’ll reset them, re-sand the joints, and fix the drainage or edge issue. We only recommend a rebuild when the base is failing or the water-table problem is structural. Get an estimate at (866) 253-5808 and we’ll tell you which one you’re dealing with.
Service Areas Near Twin Lakes
We serve Twin Lakes and the surrounding coastal and valley communities, including Live Oak, Capitola, Unilock in Soquel, Aptos, and the Santa Cruz harbor area. If you’re a few minutes away, give us a call and we’ll confirm coverage for your ZIP.
Book Your Unilock Service in Twin Lakes Today
Thinking about a paver driveway, a new patio, or a repair on an aging hardscape in Twin Lakes? Call (866) 253-5808. We’ll set up a free estimate, walk the site together, and give you a straight answer on what the ground will actually support.
Written by Nelson Fung, Owner & General Contractor at Timberline Contractors, serving Twin Lakes and the surrounding coastal communities.