Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Unilock Bathroom Remodeling: The Campbell Owner’s Guide
Unilock bathroom remodeling in Campbell typically runs $9,000-$28,000 for a full project, with most homeowners in the Pruneyard area and nearby neighborhoods landing in the $14,000-$22,000 range depending on fixture grade and substrate condition. We stock Unilock-compatible hardscape materials and coordinate installation with our plumbing and tile crews, usually starting within 2-3 weeks of written approval. Most Campbell owners discover their bathroom needs attention when they notice loose or stained pavers around outdoor shower surrounds, failing waterproofing at the threshold, or drainage pooling against the foundation after the winter rains that hit harder here than in San Jose proper.
Which Unilock Models This Applies To
Unilock’s hardscape lines that integrate with bathroom-adjacent spaces, primarily around outdoor showers, spa surrounds, and courtyard entries, include Beacon Hill Flagstone, Richcliff, and Copthorne in the paver category, plus Brussels Block and Umbriano for heavier-traffic wet areas. The key identifier is the product stamp on the paver edge, which shows the series name, manufacturing date, and color run. For bathroom-adjacent installations, the critical spec is the permeability rating and the joint sand type used originally, polymeric sand versus standard joint sand, because mismatched replacement material traps moisture against stucco or framing.
We source OEM Unilock where the color run is still active, which is usually 3-5 years from production for the popular Sierra and Limestone blends used in Campbell’s 95008 and 95009 builds. For discontinued color runs, we match to Unilock’s archived samples or specify quality aftermarket equivalents from Belgard or Techo-Bloc with documented compressive strength within 500 PSI of the original. The aftermarket decision hinges on whether the repair is visible from the living space or hidden behind plantings. We note the exact source on every written quote under Clause 1 of the Haven Standard, so there’s no substitution without signature.
Signs Your Unilock Bathroom Remodeling Is Failing

- Pavers settling or rocking around outdoor shower drains. The bedding layer beneath has eroded, usually because the original installer skipped the geotextile fabric or used the wrong base gravel for Campbell’s clay-heavy soil. Water wicks sideways instead of draining, and the freeze-thaw cycle we get in January mornings finishes the job.
- White efflorescence blooming across paver faces. This is mineral salt migration, not mold. It means moisture is moving through the paver body from below, typically because the waterproof membrane behind an outdoor shower wall has failed and is saturating the substrate. The paver itself may be sound, but the assembly behind it is not.
- Joint sand washing out between pavers near bathroom thresholds. Either the original polymeric sand was installed on a damp surface and never cured properly, or the slope is wrong and water is carrying it away. In Campbell’s hillside lots near Campbell Avenue, this often traces to settlement of the backfill that wasn’t compacted in lifts.
- Cracking or spalling on coping stones at shower curbs. Unilock’s full-coping units are dense, but thermal shock from cold water hitting sun-heated stone causes microfractures over time. We see this most on south-facing exposures in the Orchard Drive corridor where afternoon sun is relentless.
- Musty odor from below-grade perimeter drains tied to bathroom runoff. The drain line or catch basin is clogged with joint sand debris, or the connection to the municipal storm system has separated. Campbell’s older sewer lateral requirements mean some 1960s-era homes still have combined drainage that backs up under heavy use.
Before
AfterReplacement Cost & What’s Included
Bathroom remodeling with Unilock hardscape integration in Campbell runs $9,000-$28,000 for a full project, with partial repairs to outdoor shower surrounds typically $3,500-$8,500 depending on how much substrate we need to open. The price driver is almost always what we find when the pavers come up, not the pavers themselves. A sound concrete slab with proper slope adds nothing. Rotted pressure-treated framing, a failed waterproof membrane, or a drain that doesn’t tie to code-compliant overflow protection adds scope we document with photos before quoting.
Every quote is a flat price with line-item breakdown: demolition and haul-away, substrate repair or replacement, waterproofing membrane (we spec Schluter-Kerdi or equivalent), Unilock or matched replacement material, joint sand or polymeric installation, and final wash and seal. Our 365-Day Done Right Promise covers the installation and materials; manufacturer defects go to Unilock directly, and we handle that paperwork. No work proceeds on any change without a signed change order, the discipline that has kept our projects within a few percent of the agreed number since 2007.
DIY or Call Us?

What a Campbell homeowner can safely check: visual inspection of paver condition, whether drain grates are removable and clear of debris, and whether the slope visibly directs water away from the structure. A garden hose test, running water for ten minutes and watching where it goes, tells you plenty without touching a tool.
Where DIY goes wrong: lifting pavers without knowing what’s underneath, disturbing a waterproofing membrane you can’t see, or compacting new base material without the right plate compactor and lift thickness. We’ve been called to three jobs in the past eighteen months where a homeowner’s well-intentioned repair turned a $4,000 paver reset into an $11,000 substrate and membrane rebuild. The membrane failure was invisible until the pavers came up, and the homeowner had already compromised the drainage plane. For anything involving the shower pan, curb, or perimeter drainage, we recommend a trained crew. Call (831) 704-1211 and we’ll scope it with a written price before any work starts.
FAQs
Properly installed Unilock pavers and coping in Campbell’s climate last 20-30 years for the material itself, but the waterproofing assembly behind outdoor showers usually needs attention at 12-18 years. The difference is sun exposure and drainage detail. South-facing installations with poor slope fail faster; shaded, well-drained courtyards in the Pruneyard neighborhood often exceed the range. Call (831) 704-1211 for an exact assessment, estimates are free.
Individual pavers can be lifted and reinstalled if the substrate is sound and the color run is still available for matching. Efflorescence can be chemically treated once, but recurring bloom indicates moisture intrusion that surface treatment won’t fix. We photograph the assembly and quote both options when both are viable. Call (831) 704-1211 for a written comparison.
A typical full bathroom remodel with integrated hardscape in Campbell takes 3-5 weeks from permit approval to final walkthrough, with 5-7 business days for the outdoor paver or shower surround portion specifically. Permits through Campbell’s Community Development Department usually process in 10-14 business days for interior work; hardscape adjacent to structure may trigger additional review if it alters drainage patterns. We build permit time into our written schedule. Call (831) 704-1211 to review timeline specifics for your property.
We maintain relationships with Unilock distributors in the Bay Area and can typically source current color runs within 5-7 business days. Discontinued colors require matching from archive samples or aftermarket specification, which adds 1-2 weeks. We never start demolition until materials are on-site and verified against the approved sample. Call (831) 704-1211 to check availability for your specific series and color.
Ready to get a written price before anyone picks up a tool? Call Rowan Construction Group Campbell at (831) 704-1211 to schedule your free estimate. We’ll walk the job, photograph what we find, and return a flat-price quote with line-item scope under Clause 1 of the Haven Standard. Measure twice, document once, build it right.
Written by Grant Rowan, Owner, Rowan Construction Group Campbell at Rowan Construction Group Campbell, serving Campbell and nearby areas.







Before
After
Before
After
Before
After