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 Communications Hill, CA | Timberline Contractors
We provide independent Unilock installation, repair in San Jose, and rebuild service across Communications Hill, zip code 95136. The thing that separates our Unilock work here is simple: we treat every paver or wall project on this hill as a slope and drainage job first, hardscape second. If you’re planning a Unilock patio, driveway, or retaining wall on a terraced Communications Hill lot, call (866) 253-5808 for a free estimate that accounts for the ground under the pavers, not just the pavers themselves.

Why Communications Hill Residents Choose Us for Unilock Service
Nelson Fung grew up around building materials the way other kids grew up around baseball cards. He learned the trade formally at Los Angeles Trade-Technical College, then spent years on remodels and commercial builds across the LA basin before founding Timberline Contractors. What that means for your Unilock project in Buena Vista and Communications Hill is a contractor who will explain exactly why a base course matters more than the color of the paver on top of it.
We carry Unilock sales & service expertise across the brand’s core product lines, and we’re local enough to Communications Hill to know its HOA review process and hillside grading quirks. We’re an independent installer, not a Unilock dealer or authorized service center, which means our recommendations are based on what holds up on this hill, not on moving a particular SKU. Our crews build on engineered fill and slope-stability conditions here every week.
Styles & brands we work with







Common Unilock Construction Problems We Solve in Communications Hill
- Unilock Brussels Block pavers settling and rocking on terraced patios. Brussels Block laid over inadequately compacted engineered fill shifts as the fill settles, opening joints and creating uneven surfaces. We see this on Communications Hill patios where the original base was never keyed into the slope properly.
- Cambridge Pavingstones with ArmorTec hazing and efflorescing after winter storms. When a Cambridge surface gets sealed while moisture is trapped in the paver, the sealant locks in water that pushes up as white haze. On Communications Hill, winter storms drive runoff downslope against patios, which makes trapped moisture a recurring problem on exposed lots.
- U-Cara Modular retaining walls leaning or rotating on slopes. U-Cara blocks installed without geogrid reinforcement or proper drainage aggregate behind the wall shift as saturated fill pushes against them. Hillside retaining walls in Communications Hill take more lateral pressure than flatland walls ever will.
- Beacon Hill Flagstone edges chipping on exposed hilltop sites. Thin base courses plus the heat cycling and wind exposure of Communications Hill’s hilltop location cause flagstone edges to spall faster than they would in a sheltered flatland yard.
- Joint sand washing out of pavers on sloped driveways. Communications Hill driveways pitch steeply in places, and storm water running downhill strips polymeric joint sand if the joints weren’t compacted and cured right the first time.
Unilock Service in Communications Hill: What Local Conditions Mean for Your Equipment
Here’s what flatland Unilock service in Cambrian Park and valley-floor contractors don’t know until it bites them. Many Communications Hill patios sit on engineered fill placed over a retaining structure, not on native soil. When we excavate for a paver patio base on a terraced lot, we sometimes hit fill depth that triggers a grading permit question. A patio quote from a contractor who only works the valley floor never accounts for that. Digging for a deck footing or a patio base on Communications Hill can become a slope-stability and grading-permit issue mid-project. That’s the difference between a $3,500 quote that holds and one that turns into a change order when the excavation exposes what’s actually under the grass. Nelson Fung’s rule: do it right the first time or explain yourself twice. On a hillside, explanation usually involves a geotechnical report.
Unilock Models & Products We Service in Communications Hill
We install and repair Unilock Brussels Block, Cambridge Pavingstones with ArmorTec, Beacon Hill Flagstone, and the U-Cara Modular Wall System. For repairs and patching, we source genuine Unilock units with matching color runs so the patch doesn’t look like a patch. Where the specification allows, we substitute compatible quality base aggregate, geogrid, and polymeric joint sand, but we’re transparent about what’s OEM and what’s a performance-equivalent. On Communications Hill projects, we keep common base materials and aggregate on hand for faster turnaround, and we order Unilock units based on the actual color run of your existing installation.
See the difference
Before
After
Before
After
Before
AfterUnilock Service Pricing in Communications Hill
| Service | Price Range |
|---|---|
| Paver Patio Installation | $3,500 – $11,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
| Home Addition | $45,000 – $130,000 |
What drives the cost on Communications Hill is the base work, not the pavers. A patio on engineered fill over a retaining structure takes more excavation, compaction, geogrid, and drainage aggregate than a flatland patio. Our free estimates include a base inspection, a written line-item quote, and a straight answer about whether your project will need a grading permit. Call (866) 253-5808 to schedule yours.
Serving Communications Hill, CA — Our Local Coverage Area
We’re your Communications Hill General Contractor, based in this 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 Communications Hill
Sometimes yes, sometimes no, and you won’t know until the base excavation tells you what’s under the surface. If we hit engineered fill depth over a retaining structure, a grading permit may be required before we proceed. That’s why our free estimate includes checking fill depth before we quote, not after. Call (866) 253-5808 and we’ll take a look at your specific lot.
Because water saturates the fill behind the wall and pushes against it laterally, and if the wall was built without geogrid or clean drainage aggregate, the blocks rotate. Hillside walls on Communications Hill take more of this pressure than flatland walls. The fix is rebuilding the wall with proper reinforcement and drainage, not stacking the blocks back into place. Call (866) 253-5808 for an assessment.
Yes. Communications Hill is a master-planned community with active architectural review, and a paver driveway is the kind of exterior change that often needs board approval before work starts. We’re familiar with the process and include the review timeline in our project plan so your driveway doesn’t stall waiting for a signature.
Only if the pavers are fully dry and the base drains properly. Sealing over trapped moisture on a wind-exposed Communications Hill patio produces haze and efflorescence that’s hard to remove. We recommend sealing selectively, not by default, and we’ll tell you if your specific patio is a good candidate. Call (866) 253-5808 and we’ll assess it in person.
Resurfacing means re-sanding joints and maybe replacing a few pavers on top. Rebuilding means excavating down to the base, fixing compaction and drainage, and reinstalling the pavers. When a Communications Hill patio has failed at the fill or base layer, no amount of re-sanding fixes a moving foundation. We advise rebuild over resurfacing every time the base is the problem.
Service Areas Near Communications Hill
We serve the Communications Hill area and nearby communities across the South Bay. That includes Communications Hill service area coverage throughout 95136, plus Unilock service in Seven Trees and Unilock service in Boulder Creek for clients farther out who want the same independent Unilock expertise.
Book Your Unilock Service in Communications Hill Today
If your Unilock patio, driveway, or wall is on Communications Hill, the base under it matters more than the paver on top. Call (866) 253-5808 to schedule a free estimate and we’ll tell you exactly what your slope, fill, and drainage mean for the project before we quote a dollar.
Written by Nelson Fung, Owner at Timberline Contractors, serving Communications Hill and the South Bay since day one.