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 Portola Valley, CA | Ashford Contractors
We provide independent Unilock construction service across Portola Valley and Stanford Unilock service, from paver driveway installations to hillside patio rebuilds. The one thing that makes our Unilock work here different is that we plan every job around Portola Valley’s WUI fire-safety review, clay-rich hillside drainage, and those narrow private roads that a standard dump truck can’t climb. If you’re planning a Unilock driveway, patio, or walkway in Portola Valley, call Ashford Contractors at (877) 752-3868 for a free estimate.
Why Portola Valley Residents Choose Us for Unilock Service
We’ve placed Unilock systems on enough Santa Cruz Mountains slopes to know that the paver is only as good as what’s underneath it. Homeowners in Portola Valley call us because we speak the full language of the job: Unilock model selection, base prep, drainage detailing, and the WUI requirements that govern what materials can sit next to a hillside. Glen Mossier, our owner, grew up in Foster City’s Marlin Cove and trained in construction technology at Skyline College, where he learned the materials science that actually shows up on a job site. That background is why we specify a geotextile-separated aggregate base on clay hillside lots instead of hoping the pavers hold. We’re an independent contractor, not a Unilock dealer, and that independence means we’ll tell you plainly when a different paver system is the better call for your slope. We work with genuine Unilock pavers, edge restraints, and their specified joint sands, and we stock enough common components locally to keep Portola Valley projects moving without waiting on long-lead shipments.
Styles & brands we work with
Common Unilock Construction Problems We Solve in Portola Valley
Unilock pavers are well-made. What fails in Portola Valley is almost always the base, the drainage, or the edge restraint, and the town’s steep lots and winter rains expose those failures fast. Here’s what we fix regularly:
- Base failure and rutting on steep driveways. Portola Valley’s clay-rich hillside soils shift when winter rain saturates them. If the aggregate base was shallow or under-compacted, the Unilock field settles and ruts, and joint sand washes out. We lift the field, deepen and re-compact the base, and relay the same pavers where they’re still sound.
- Efflorescence and staining on light-colored pavers. Constant irrigation overspray and hillside runoff leave white mineral blooms on Unilock Beacon Hill Flagstone and Brussels Block. Re-sanding doesn’t fix the recurring bloom; correcting the drainage path does, and we do both.
- Edge restraint and soldier-course creep. On driveways and patio perimeters above cut slopes, pavers walk outward when the edge restraint was skipped or pinned improperly. We rebuild the perimeter with pinned restraint and polymeric sand so the field stays put.
- Permeable system clogging. Unilock Eco-Optiloc permeable pavers stop infiltrating when fines from decomposed granite slopes and roof runoff seal the open-graded joints. We flush and restore the system before the rainy season, not after the slope starts draining onto the driveway.
- Joint sand depletion after storms. Heavy winter rain on Portola Valley’s steep lots strips polymeric sand faster than flat, urban sites. We re-sand with the correct Unilock-specified product and, where needed, add drainage correction so homeowners aren’t re-sanding every spring.
Unilock Service in Portola Valley: What Local Conditions Mean for Your Equipment
Here’s what we know from running Unilock jobs in Portola Valley that a flatland contractor would miss. The narrow, privately maintained roads off Portola Road and Alpine Road often cannot accommodate a standard dump truck or concrete mixer. That means a Unilock job here is won or lost on staging. Palletized pavers and base rock have to be shuttled in on smaller trucks, sometimes in multiple trips, and the paver lay has to be sequenced around where material can actually land. On a steep wooded lot off Portola Road, our crew rebuilt a rutted driveway with Unilock Brussels Block over a deepened, geotextile-separated aggregate base, pinned edge restraint, and polymeric joint sand. Because the private road couldn’t take a full dump truck, we staged pallets in the client’s upper turnout and fed the lay with a compact machine. After the first heavy winter rain the field stayed put with no sand washout, which is the whole point on these clay hillsides. That’s the Portola Valley difference: we plan delivery and staging before we plan the paver pattern.
We also work with homeowners across the Portola Valley service area to coordinate WUI review, geotechnical input, and delivery logistics so a paver driveway or patio doesn’t stall at the town’s approval stage.
Unilock Models & Products We Service in Portola Valley
We install and repair the Unilock lines that make sense on Portola Valley hillsides: Brussels Block for classic tumbled driveways and patios, Beacon Hill Flagstone for flagstone-look patios, Eco-Optiloc permeable systems where drainage governs the design, and Richcliff for textured, slab-style driveways and walkways. Our parts approach is straightforward: authentic Unilock pavers, edge restraints, and their specified joint sand and polymeric products so the system’s structural and permeability claims stay intact. Aftermarket lookalikes can’t match Unilock’s dimension tolerances, and they telegraph at the joints. For general Unilock work, see our Unilock sales & service page, and when a paver field is sound we lift, re-base, and relay it rather than selling a tear-out. When the base has failed or the slope needs engineered drainage, we say so before anyone starts digging.
See the difference
Before
After
Before
After
Before
AfterUnilock Service Pricing in Portola Valley
Pricing for Unilock work in Portola Valley depends on slope, access, base depth, and whether we’re installing new or rebuilding an existing field. The ranges below reflect what we see across the local market:
| Service | Price Range |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Driveway Replacement | $5,000 – $14,000 |
Every estimate starts with a site visit because we need to see the slope, the access road, and how water moves across the lot, whether you’re in Portola Valley or need Unilock in Los Altos Hills. We provide written line-item quotes so you can see exactly where the money goes, and the estimate is free. Call (877) 752-3868 to schedule one.
Serving Portola Valley, CA — Our Local Coverage Area
We’re based in the Portola Valley area and know this community well, and we also provide Ladera Unilock service. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Unilock Construction in Portola Valley
Permeable Unilock Eco-Optiloc makes sense on Portola Valley lots where stormwater runoff needs to infiltrate on-site rather than sheet off the slope, and WUI review often favors hardscape that slows water movement. But a permeable system only works if the open-graded base is maintained and the joints don’t get sealed with fines from decomposed granite slopes. We’ll assess your drainage and tell you honestly whether permeable is the right call or whether a conventional Unilock field with proper drainage grading is more practical. Call (877) 752-3868 and we’ll walk the site with you.
No. We’re an independent contractor that installs Unilock segmental concrete and permeable paver systems. Our credibility comes from placing these systems on Santa Cruz Mountains slopes, not from a dealership agreement. That independence means our recommendations are based on what your hillside actually needs, not on moving a particular product line.
We use genuine Unilock pavers, edge restraints, and their specified joint sand and polymeric products. Aftermarket pavers can’t match Unilock’s dimensional tolerances, and the joints will show it within a season or two. On Portola Valley hillsides where shifting clay is a constant, those tolerances matter more than anywhere we work.
Most paver patio installations run three to five working days. Driveway replacements on steep lots with private-road access typically run one to two weeks because staging and delivery take longer. We’ll give you a schedule before we start, and we adjust the lay sequence around what the access road can handle.
Paver driveway installation in Portola Valley generally runs $7,000 to $18,000, with driveway replacement at $5,000 to $14,000 depending on slope, base depth, and access constraints. Call (877) 752-3868 for an exact quote after a site walk. Estimates are free, and the quote is line-item so you can see where every dollar goes.
Service Areas Near Portola Valley
Beyond Portola Valley, we provide Unilock construction service in Foster City, Redwood Shores, Belmont, San Mateo, San Carlos, and Highlands-Baywood Park. For coastal-side projects, see our Unilock service in Pacifica and Unilock service in Visitacion Valley pages.
Book Your Unilock Service in Portola Valley Today
From a paver driveway that holds on a clay hillside to a patio that drains cleanly through Portola Valley winters, we plan the whole job around your property’s realities, including Unilock service in West Menlo Park. Call (877) 752-3868 today and we’ll schedule your free estimate. Build it right the first time, and you won’t be rebuilding it in ten years.
Written by Glen Mossier, Owner at Ashford Contractors, serving Portola Valley and the greater San Mateo County area.