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Unilock Construction in Interlaken, CA | Milpitas Construction
We install and repair Unilock hardscape systems across Interlaken, CA, and we’re an independent crew, not an authorized Unilock dealer. The thing that makes our Unilock work here different is this: nearly every property in Interlaken runs on well and septic, so drainage design on a Unilock driveway or patio has to be routed around the leach field first and the pavement slope second. That’s not a detail you can afford to get wrong in this zip code. We’re Milpitas Construction, led by Ken Stafford, and we spec Unilock pavers and retaining walls to hold up through Pajaro Valley winters. Call (877) 752-4194 for a free estimate.
Why Interlaken Residents Choose Us for Unilock Service
We know Unilock systems the way a crew should, because we install Brussels Block, Beacon Hill Flagstone, Brussels Dimensional Stone, and Pisa2 walls on rural properties where the ground doesn’t cooperate. Interlaken isn’t a subdivision with clean fill and city storm drains. It’s unincorporated county land, older farmhouses, agricultural outbuildings, and soils that stay wet from November through March. Ken Stafford grew up near the Milpitas BART corridor back when it was warehouse lots and family shops, and he’s spent his career on ground-up residential builds and remodels that don’t cut corners. That matters when your paver base has to sit on clay that swells and shrinks every season. We also handle full exterior and interior scope, roofing, windows, kitchens, ADUs, under one contract, so the same crew managing your Unilock driveway can handle the farmhouse addition behind it. That’s the point of our Unilock sales & service approach: one accountable team, not a rotating cast of subs.
Styles & brands we work with







Common Unilock Construction Problems We Solve in Interlaken
- Silted and settled paver joints on driveways. Winter storm runoff from the Pajaro Valley sheets across flat or unsloped aprons, washing fines out of Brussels Block and Beacon Hill joints until the surface starts to rut and shift. We re-grade, rebase, and re-joint with polymeric sand that holds.
- Efflorescence blooms on paver surfaces. Wet-soil wicking pulls salts up through bedding sand when the original base wasn’t built to depth. You’ll see white chalky patches on Unilock pavers after a wet winter. It’s cosmetic mostly, but it tells you the base is breathing moisture it shouldn’t.
- Leaning and shifted retaining wall courses. Pisa2 and Brussels Dimensional walls built without engineered drainage will lean when the clay subsoil stays saturated through the rainy season. We rebuild those with proper behind-wall drainage and geogrid where the height calls for it.
- Edge restraint failures at driveway-to-farm-road transitions. In Interlaken, pavers creep and open joints where a poured curb settles in soft, uncompacted ground near outbuildings. We fix the curb detail and anchor the paver edge so it stops migrating.
- Base failure under older rural installs. Many Interlaken paver fields were laid straight over native clay with no rock subbase. Once that heaves, the surface follows. Honest guidance here is usually repair-and-rebase, not full replacement, unless the base was never there to begin with.
Unilock Service in Interlaken: What Local Conditions Mean for Your Equipment
Here’s the thing most generic Unilock pages miss about Interlaken. Because most properties here run on wells and septic systems, any hardscape job has to route stormwater away from the leach field and keep the paver base from overloading a drainfield. That means drainage design on a Unilock driveway is dictated by the septic layout, not just the pavement slope. A driveway that looks like it drains fine might be pushing runoff straight into the leach area, and a few wet winters later you’ve got a saturated drainfield and a paver field that won’t stop moving. On a farmhouse property off a rural Interlaken lane, our crew tore out a heaving paver driveway and found the original base had been laid straight over uncompacted clay with no drainage away from the septic leach field. We re-graded the subbase to shed runoff toward a vegetated swale, set a geogrid-reinforced base, and relaid Unilock Brussels Block with polymeric joints. The driveway now drains clear of the leach area through the wet season. That’s work you only get from a contractor who understands both Unilock systems and Interlaken’s county-level water rules.
Unilock Models & Products We Service in Interlaken
We work regularly with Unilock Brussels Block, Beacon Hill Flagstone, Brussels Dimensional Stone, and the Pisa2 retaining wall system. For visible faces and matching replacements, we use genuine Unilock pavers, caps, and system components. For base, geogrid, and polymeric joint sand, we use quality aftermarket materials where the branded part adds no structural value. On a rural Interlaken paver field, we’d rather put money into a deeper, properly compacted subbase than into branded sand that just holds the joints. We keep standard Unilock replacement pavers and caps ordered and staged for fast turnaround across Interlaken and the surrounding valley, so a partial match doesn’t sit in limbo for two weeks.
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AfterUnilock Service Pricing in Interlaken
Unilock hardscape pricing in Interlaken varies with base repair, drainage work, and paver product. What drives cost here more than most areas is what we find underground: clay subsoil, septic layouts that force drainage rerouting, and old bases that need full excavation. A free estimate from us includes a site walk, a look at your septic and drainage layout, and a written line-item quote so you know exactly what’s going into the job. Here’s where Interlaken Unilock work typically lands:
| Service | Typical Range |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Driveway Replacement | $5,000 – $14,000 |
| Driveway Sealing | $250 – $700 |
Call (877) 752-4194 for an exact quote. Estimates are free, and we’ll tell you straight whether repair or replacement is the right call.
Serving Interlaken, CA — Our Local Coverage Area
We’re based in the Interlaken 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 Interlaken
Will a Unilock paver driveway hold up to farm equipment and wet winters?
Yes, if the base is built to depth with proper drainage and edge restraint, and we’ve re-based many Interlaken driveways that were originally laid too thin. Unilock Brussels Block handles light farm equipment fine when the subbase is geogrid-reinforced and the water is routed away from the paver field and septic area. Call (877) 752-4194 for a site assessment, and we’ll tell you what your driveway actually needs.
Are you an authorized Unilock dealer?
No. We’re an independent construction crew that installs and repairs Unilock systems across Interlaken and the Pajaro Valley. We are not authorized, sponsored, or endorsed by Unilock. What we are is fluent in how their pavers, retaining walls, and permeable products actually behave in wet, clay-heavy soils, because we’ve fixed enough local installs to know exactly where they fail.
Do you use genuine Unilock parts?
For visible faces, matching pavers, caps, and system components, yes, we use genuine Unilock product. For base material, geogrid, and polymeric joint sand, we use quality aftermarket materials where the branded component doesn’t add structural value. A paver base built to correct depth matters more than a brand stamp on the sand.
How long does Unilock service take in Interlaken?
A repair-and-rebase on a typical Interlaken driveway or patio runs a few days to a week, depending on drainage work and how much of the old base has to come out. Full replacement with re-grading and septic-drainage rerouting can run two to three weeks. We’ll give you a schedule in the written estimate, and it won’t shift because we’re also managing the other trades.
How much does a Unilock paver driveway cost in Interlaken?
Paver driveway installation in Interlaken typically runs $7,000 to $18,000. A repair-and-rebase is usually less than full replacement, often in the $5,000 to $14,000 range depending on base depth and drainage work. Call (877) 752-4194 and we’ll give you a line-item number for your specific lot.
Service Areas Near Interlaken
We run Unilock hardscape work throughout the Pajaro Valley and into the neighboring foothill and coastal communities. If you’re in Marin City, San Juan Bautista, Castroville, Prunedale, Silver Lakes, or Piñon Hills, we bring the same septic-aware drainage approach to your paver project. Our crews also cover Interlaken service area and beyond, including Unilock service in Gilroy and Unilock service in Montara.
Book Your Unilock Service in Interlaken Today
If your Unilock driveway, patio, or retaining wall is shifting, silting, or just tired, let’s get eyes on it. We’ll walk your property, check the septic and drainage layout, and give you a straight answer on repair versus replacement. Call (877) 752-4194 to schedule your free estimate in Interlaken.
Written by Ken Stafford, Owner at Milpitas Construction, serving Interlaken and the Pajaro Valley with Unilock hardscape construction and repair.