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Unilock Construction in San Francisco, CA | Ashford Contractors
Unilock paver work in San Francisco comes down to one question: will the base hold? We install and repair Unilock Brussels Block, Beacon Hill, Treo, and Elegance permeable systems, and the answer depends on soils, slope, and drainage, not the showroom photo. As an independent contractor, we bring no dealer bias to your job. Call (877) 752-3868 for a free estimate on any Unilock paver, patio, or driveway project across San Francisco’s 94111, 94112, 94114, and 94115 ZIP codes, including Unilock in Mission District.
Why San Francisco Residents Choose Us for Unilock Service
Glen Mossier, our owner, learned the hard way that Bay Area construction rewards patience and punishes shortcuts. He grew up in Foster City watching lagoon-side homes get rebuilt after water damage, trained in construction technology at Skyline College, and has spent two decades fixing what rushed installs leave behind. Build it right the first time, and you won’t be rebuilding it in ten years. That’s the standard we bring to every Unilock paver field we set in San Francisco.
We’re not a manufacturer-authorized dealer. We’re an independent contractor, which means when we recommend a Unilock product or a repair approach, the recommendation is based on your site’s drainage and seismic profile, not a sales quota. We stock genuine Unilock pavers, matching Unilock edge restraints, and Unilock joint sand. We also carry OE-equivalent jointing compounds where they genuinely match the original spec. If a single paver is cracked or spalled, we lift and replace it. If the base is failing, we’ll tell you plainly and give you a repair number and a rebuild number side by side.
Our crews have worked Unilock installations across San Francisco’s fog-belt neighborhoods, from Noe Valley rear yards to Outer Sunset driveway aprons. We know what marine moisture does to paver surfaces here, and we plan for it before the first base layer goes down. See our full Unilock sales & service scope for what we cover.
Styles & brands we work with
Common Unilock Construction Problems We Solve in San Francisco
- Efflorescence and salt bloom on Brussels Block and Beacon Hill pavers. San Francisco’s persistent marine fog keeps shaded north-facing patios and driveways damp for months. Moisture wicks through the paver, carries mineral salts to the surface, and leaves a white chalky bloom that doesn’t just rinse off. We clean, neutralize, and reseal affected pavers, and we adjust the base and slope so water stops pooling underneath.
- Polymeric joint sand washing out and paver migration. This shows up most in liquefaction-susceptible areas like South of Market, where clay and fill soils shift under seasonal moisture swings. A paver field set on a shallow base drifts, joints open, and sand washes away. We pull the affected section, recompact a deeper base, and reinstall with fresh Unilock joint sand.
- Edge restraint and soldier-course heave from tree roots. Tightly packed rowhouse lots in San Francisco put pavers within a few feet of mature street trees and old root systems. Roots push up edge courses, and seasonal soil movement cracks the border. We reset edge restraints with proper depth and root-barrier detailing where the lot allows.
- Drainage failure on sloped driveway aprons. In the Outer Sunset, a paver field that traps fog moisture against a soft-story garage wall feeds rot and spalling at the wall base. We re-grade the apron so water sheets away from the structure, not into it.
- Permeable system failure from clogged joints. Unilock Elegance is a permeable slab system, but San Francisco’s fog-drip organic debris and marine salts clog the joints over time, killing infiltration. We deep-clean and re-sand permeable systems so they actually drain.
Unilock Service in San Francisco: What Local Conditions Mean for Your Equipment
Before any paver base goes in, we check whether the site falls in a mapped Liquefaction or Landslide Zone under the Seismic Hazard Mapping Act. That check is not optional in San Francisco. A parcel in the Marina or along the eastern waterfront can trigger a geotechnical report and a base assembly that’s thicker and deeper than a generic patio spec. Clay and fill soils consolidate unevenly under load, and a paver system set on six inches of base over fill will move. The same system set on twelve inches of compacted aggregate with proper geotextile separation will hold. The difference is engineering, not product. On a rear-yard job off a Noe Valley Victorian where we provide Unilock service in Noe Valley, our crew found an existing Unilock Brussels Block field blooming white and rocking over a thin base set on fill. We pulled the field, dropped a deeper compacted base with proper slope away from the soft-story garage, reset the pavers with Unilock edge restraints, and the patio has drained cleanly through two wet winters since.
That’s the San Francisco difference. In a flat inland city, a paver patio is a weekend job. Here, it’s a foundation decision. Our San Francisco service area runs through neighborhoods where every site has a story.
Unilock Models & Products We Service in San Francisco
We install and repair the full Unilock residential line: Brussels Block and Beacon Hill for classic tumbled looks, Treo for modern linear patterns, and Elegance for permeable applications where stormwater management matters. We source genuine Unilock pavers and matching Unilock edge restraints so the system’s interlock and permeability ratings stay intact. For repair work, we keep common Brussels Block and Beacon Hill units locally stocked for fast San Francisco turnaround, and we special-order Treo and Elegance units when a match requires it. When a single unit fails, we lift and replace it. We don’t sell you a full re-lay to fix one cracked paver.
See the difference
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AfterUnilock Service Pricing in San Francisco
Here’s what Unilock work typically runs in San Francisco, based on local soil prep and site access realities.
| Service | Price Range |
|---|---|
| Paver Patio Installation | $4,130 – $12,980 |
| Paver Driveway Installation | $8,260 – $21,240 |
| Concrete Driveway Installation | $5,310 – $14,160 |
| Driveway Replacement | $5,900 – $16,520 |
| Driveway Sealing | $295 – $825 |
What drives the number is base depth, access, and whether your site needs a geotech report. A Visitacion Valley Unilock service call or Noe Valley rear yard with alley access costs less than a Marina lot requiring engineered fill compaction. Every estimate we give is written, itemized, and free. Call (877) 752-3868 and we’ll walk the site with you.
Serving San Francisco, CA — Our Local Coverage Area
We’re a San Francisco General Contractor based in the 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 San Francisco
Yes. If your parcel is mapped in a Liquefaction Zone under the Seismic Hazard Mapping Act, the base assembly has to be deeper and stronger than a standard patio spec. You may need a geotechnical report before we start. We handle that requirement on every San Francisco project we quote.
That white bloom is efflorescence, mineral salts pulled to the surface by moisture wicking through the paver. San Francisco’s marine fog keeps north-facing and shaded paver surfaces damp for long stretches, which makes the bloom worse. Cleaning alone won’t fix it if the base is holding water. Call (877) 752-3868 and we’ll tell you if it’s surface or structural.
It depends on the condition of the concrete. If the slab is sound and properly sloped, an overlay is possible. If it’s cracked, heaving, or trapped against a soft-story garage wall, the concrete needs to come out first. We’ll tell you which applies to your San Francisco driveway when we inspect it.
If your garage sits at street level under living space, any paver work at the garage entrance has to respect the existing seismic retrofit conditions. We won’t grade water toward a soft-story wall or undermine any retrofit work already done. The sequencing matters, and we coordinate it.
Yes, when the base is built right. San Francisco’s wet winters test shallow bases, and mature street trees push on edge courses. We over-excavate, compact in lifts, and set edge restraints deep enough to hold. The paver field is only as good as what’s underneath it.
Service Areas Near San Francisco
Our crews work across the Peninsula from San Francisco south through Foster City, Redwood Shores, Belmont, and San Mateo. If you’re in the Unilock service area around Loyola, we cover that too. We also handle Unilock service in Chinatown for dense-lot paver work where access is tight.
Book Your Unilock Service in San Francisco Today
We’ll walk your San Francisco site, check the base conditions, and give you a written estimate. Call (877) 752-3868 to schedule your free Unilock service estimate.
Written by Glen Mossier, Owner at Ashford Contractors, serving San Francisco and the Peninsula since 2004.