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Unilock Construction in Colma, CA | Daly City Construction
We install and repair Unilock paver systems across Colma, from Brussels Block walkways to Lineo slab patios and Brussels Dimensional Wall retaining walls. What makes our Unilock work here different is simple: Colma’s ground is cemetery land first, housing second, so every dig starts with a records check, not a shovel. We’re an independent Unilock installer, not manufacturer-affiliated or authorized, and we stand behind our own workmanship. Call (866) 505-5254 for a free estimate on a paver patio, driveway, or wall in Colma.

Why Colma Residents Choose Us for Unilock Service
Unilock pavers are a specific product, and they behave a specific way in Colma’s fog belt. We’ve worked with Brussels Block, Beacon Hill, Lineo, and the Brussels Dimensional Wall system long enough to know how each one reacts to saturated soils, persistent damp, and the moss that thrives in shaded cemetery-adjacent yards. When a walkway heaves or joint sand washes out, the fix is rarely a full tear-out. We lift, re-grade, re-set, and re-sand using Unilock’s own joint sand and edge restraints, because generic substitutes don’t lock the tight dimensional joints these pavers are designed for.
Noel Cabrera grew up in the Westlake district of Daly City, where postwar tract homes taught him early that fog-weathered construction needs real moisture barriers and structural attention, not cosmetic patching. He trained in construction technology at City College of San Francisco and has spent years working residential and light commercial jobs across San Mateo and San Francisco counties. That background matters when your Colma paver project sits on ground where drainage, base prep, and excavation coordination are the whole ballgame.
We also carry the full hardscaping scope: paver patio installation, paver driveway installation, and driveway sealing. One contractor, every phase.
Styles & brands we work with







Common Unilock Construction Problems We Solve in Colma
- Efflorescence on Brussels Block and Beacon Hill faces. Colma’s fog never fully lifts in summer, so paver faces stay damp and mineral salts wick through the body, leaving that white bloom. We clean it, re-seal with Unilock’s sealer, and adjust the jointing so moisture stops cycling through the paver.
- Joint sand washout on cemetery-ground walkways. Saturated soils around Colma’s burial grounds push water laterally under paver bases, and that pressure flushes joint sand out, leaving pavers loose and drifting. We re-sand with Unilock’s proprietary jointing material and re-address the base drainage so the water goes somewhere else.
- Moss and black algae on shaded Beacon Hill and Lineo surfaces. Year-round coastal fog keeps north-facing and tree-shaded paver runs damp enough for biological growth. We treat the surface, re-sand as needed, and apply sealer so the next fog season doesn’t re-grow the same green layer.
- Base settlement and lippage on driveway aprons. Where undocumented vaults or old cemetery fill weren’t identified before excavation, bases settle unevenly and pavers lift at the edges. We identify the bad section, lift it, re-compact the base with proper drainage, and re-set the pavers to grade.
- Edge restraint failure on walkways. In Colma’s tight infill lots between cemetery parcels, walkways sit close to property lines and retaining structures. When the buried edge restraint fails, pavers migrate outward. We replace with Unilock’s restraint system and re-lock the field.
Unilock Service in Colma: What Local Conditions Mean for Your Equipment
Colma’s ground is dominated by permanent burial plots, and that changes how every paver project starts. More than 1.5 million burials sit under and around the town’s roughly 17 cemeteries, and the 94015 ZIP has very little residential land to begin with. When we excavate for a paver walkway, patio, or driveway apron anywhere near cemetery boundaries, the dig has to be cleared against the individual cemetery operator’s plot maps, not just the city. A patio dig in Colma is a records check before it’s a shovel. We’ve done this enough times to know the routine: call the operator, pull the plot map, mark the excavation limits, and only then run the compacted base and drainage. That’s the information-gain difference here: in Daly City or South San Francisco you’d clear utilities and dig; in Colma you clear the dead first, and nobody writes that on a generic paver page.
On a short residential block tucked between burial grounds off the 94015 ZIP, near Unilock in Pacifica,, we tore out a heaved Brussels Block walkway where water had been pooling under the base and pushing pavers out of line. Before we dug, we worked the excavation against the neighboring cemetery operator’s plot map so we wouldn’t clip an old vault. We re-graded with fresh compacted base and drainage, re-set the Brussels Block, swept in Unilock joint sand, and sealed the run so the fog-damp surface sheds water instead of growing moss.
Unilock Models & Products We Service in Colma
We work across the Unilock lines that hold up best in Colma’s damp, fog-heavy climate when installed correctly. Brussels Block is the tumbled dimensional paver we set most often for walkways and patios; Brussels Dimensional Wall handles low retaining walls and seat walls around sloped cemetery-adjacent lots. Beacon Hill is the flagstone-style paver for larger patio fields, and Lineo is the modern slab paver we spec for clean-lined driveways and rooftop-adjacent flatwork.
We use Unilock’s own matching joint sand, edge restraints, and sealer on every repair, because the proprietary sand locks those tight dimensional joints in a way generic polymeric sand won’t. We keep the common parts on hand for fast turnaround in Colma, and we only recommend full replacement when the base itself has failed past the point of re-compaction. Learn more about Unilock sales & service across our full coverage area.

See the difference
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After
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AfterUnilock Service Pricing in Colma
| Service | Colma Price Range |
|---|---|
| Paver Patio Installation | $3,500 – $11,000 |
| Paver Driveway Installation | $7,000 – $18,000 |
| Driveway Sealing | $250 – $700 |
What drives the final number in Colma is excavation depth, how much base material we have to bring in, and whether the dig requires cemetery plot-map coordination. A patio on stable compacted ground costs less than one where we’re re-grading saturated fill or working around documented vaults. Your free estimate includes a walkthrough, a written line-item quote, and a straight answer on what the site actually needs. Call (866) 505-5254 to schedule that estimate.
Serving Colma, CA — Our Local Coverage Area
We’re based in the Colma 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 Colma
Moss is the visible symptom, but the underlying issue is persistent moisture cycling through the paver body and joint sand. Left untreated, biological growth traps water against the surface, which accelerates efflorescence and joint-sand degradation. It’s not just cosmetic. Call (866) 505-5254 if your pavers are staying damp, and we’ll assess the drainage and sealer schedule.
Yes. Because much of Colma’s ground includes permanent burial plots, vaults, and cemetery easements, any excavation has to be cleared against the individual cemetery operator’s plot maps, not just city records. We handle that coordination before the shovel goes in. It’s standard practice on our Colma projects.
Yes, if the base is engineered for it. Saturated soil just means we excavate deeper, bring in proper compacted aggregate, and install drainage that moves water out from under the paver field. Skipping that step is how you get settlement and heaving. We build the base for Colma’s moisture, not for a dry-climate install guide.
Usually a repair beats replacement. We lift the affected section, re-compact the base, re-set the pavers, and re-sand the joints. Full replacement only makes sense when the base has failed across the whole field. Call (866) 505-5254 and we’ll tell you which one your walkway actually needs.
In Colma’s fog belt, we typically recommend sealing every two to three years, depending on shade and drainage. Shaded runs near cemetery trees may need it more often; full-sun patios with good drainage can stretch longer. The sealer is what keeps the damp from wicking through and blooming efflorescence. Call (866) 505-5254 for a sealer schedule matched to your site.
Service Areas Near Colma
We serve the full Colma border, with regular work in Colma service area as well as Unilock service in Visitacion Valley, Unilock service in Noe Valley, Daly City, Broadmoor, and Brisbane.
Book Your Unilock Service in Colma Today
Tell me what the house needs, not what you think it needs, then we’ll figure out the right fix. Call (866) 505-5254 to schedule your free Unilock estimate in Colma, and we’ll walk the site, check the ground, and price it straight.
Written by Noel Cabrera, Owner at Daly City Construction, serving Colma and the broader Unilock service in Broadmoor and Daly City area.