Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Before
After
Before
After
Before
AfterUnilock Construction in San Francisco, CA | Barrett & Sons Construction
We’re Barrett & Sons Construction, an independent Unilock service provider working across San Francisco, CA. We install and repair Unilock paver patios, driveways, and walkways, and the one thing that separates our work from a generic paver job is that we engineer every base for this city’s specific soils and seismic reality. If you need Unilock work done right in San Francisco, call (877) 610-1318 for a free estimate. Tom Barrett has been running crews in this city since 1998, and we pull permits on every eligible job.
Why San Francisco Residents Choose Us for Unilock Service
We’ve spent over two decades restoring and installing Unilock pavers and walls across San Francisco, from century-old courtyard replacements in Pacific Heights to new rooftop terraces in SoMa. Our crews know how Unilock’s concrete pavers perform under coastal fog, seismic shifts, and heavy pedestrian traffic because we’ve repaired and reinstalled hundreds of them in this city. We stock genuine Unilock Beacon Hill Flagstone, Thornbury, Courtstone, and Lineo Dimensional Stone for color-match repairs, and we keep premium aftermarket base materials and polymer sand on hand for San Francisco’s clay and sand soils. Tom Barrett grew up watching crews pour foundations in the San Fernando Valley, learned the trade at LA Trade-Tech, and has spent the better part of two decades building in neighborhoods where he shows up when he says he will. When you hire us, the work is performed by Tom’s sons and their teams, not dispatched strangers.
As an independent contractor, we’re not manufacturer-affiliated. That means we give you straight advice on repair versus replacement, and we never push a brand decision that doesn’t fit your site.
Common Unilock Construction Problems We Solve in San Francisco
- Paver spalling and surface pitting from fog-belt moisture. In higher-elevation microclimates like Twin Peaks and Diamond Heights, persistent marine-layer moisture combined with occasional freeze-thaw cycles eats at paver surfaces. We see it most on older Unilock Beacon Hill units, and we’ll tell you honestly if a full reset makes more sense than patching.
- Efflorescence buildup on Beacon Hill and Courtstone pavers. Fog-belt ZIP codes in San Francisco accelerate mineral migration to the surface, leaving white residue within months of install. We clean it correctly and adjust the base and jointing approach so it doesn’t come right back.
- Edge restraint failure on older Unilock patios. Patios laid years ago without polymer sand or adequate base shift during seismic events like the aftershocks from the 2014 South Napa quake. We fix the edge restraint properly, not just cosmetically.
- Joint sand erosion on high-traffic commercial strips. Thornbury units along Union Street and Chestnut Street take constant foot traffic that beats sand out of the joints, which leads to wobble and uneven surfaces. We re-joint with polymer sand that actually holds in San Francisco’s damp conditions.
- Settlement from liquefaction-prone soils. In the Mission and Noe Valley, many Unilock patios sit on 19th-century sand dunes. We routinely over-excavate to 12-16 inches and add geotextile fabric to stop future settlement before it starts.
Unilock Service in San Francisco: What Local Conditions Mean for Your Equipment
In the Mission and Noe Valley, many Unilock patios sit atop 19th-century sand dunes that liquefied in 1906 and again in 1989. That history is not abstract here. It shows up as slow settlement, cracked joint lines, and a patio that dips toward the house after a decade. When we install or reset Unilock pavers in these neighborhoods, we routinely over-excavate to 12 to 16 inches and add geotextile fabric under the base to prevent future settlement. That depth is almost never required across the bay in Alameda, where the soils are firmer and the seismic profile is different. A contractor quoting San Francisco work with suburban-standard base specs is quoting you a future repair, not a finished job. We’d rather dig deeper once than come back twice.
Our crew reset a Unilock Beacon Hill Flagstone patio on Liberty Street in Noe Valley after Loma Prieta-era porch footings caused differential settlement. We pulled the pavers, installed a 4-inch compacted Class II base over geogrid, and re-laid with Gator Maxx G2 polymer sand. The client’s original 1990s pavers were reused and look brand new. We’ll do it right the first time, or we’ll come back and make it right.
Unilock Models & Products We Service in San Francisco
We install and repair the full Unilock paver and wall line. Our most common San Francisco jobs involve:
- Unilock Beacon Hill Flagstone - used heavily for patio and walkway replacements in older San Francisco neighborhoods.
- Unilock Thornbury - popular on commercial strips and high-traffic residential entries.
- Unilock Courtstone - common for courtyards and period-style homes across San Francisco.
- Unilock Lineo Dimensional Stone - increasingly specified for modern roof decks and clean-line patios.
For critical color-match repairs, we use genuine Unilock pavers and matching edge restraints. For base materials and poly sand, we select premium aftermarket products suited to San Francisco’s clay and sand soils. If an existing Unilock patio has more than 30% spalled or mismatched units, we often recommend a full reset with a new bedding layer rather than piecemeal patching. That’s the honest math, and we’ll walk you through it in writing before any work begins. For more on our brand work, see our Unilock sales & service page.
Unilock Service Pricing in San Francisco
Here’s what you can expect to pay for the Unilock work we handle in San Francisco:
| Service | Price Range |
|---|---|
| Paver Patio Installation | $4,130 - $12,980 |
| Paver Driveway Installation | $8,260 - $21,240 |
| Concrete Driveway Installation | $5,310 - $14,160 |
What drives the cost in San Francisco is the base work, not the pavers. Over-excavation, geotextile fabric, and compacted Class II base take labor hours. A shallow install is cheaper up front and fails early. Every estimate we provide is a written line-item quote, and any price change comes as a written change order before work proceeds. Call (877) 610-1318 to schedule your free estimate.
Serving San Francisco, CA - Our Local Coverage Area
We’re based in the San Francisco 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, with careful sourcing. Fog-belt exposure fades older Unilock units unevenly, so an exact match often requires blending new pavers with existing ones across the surface rather than patching in a visible block. We source genuine Unilock units and re-lay the area so the transition reads natural, not patched. Call (877) 610-1318 and we’ll come look at the patio before quoting.
In most cases, replacing an existing paver driveway or patio at the same location and elevation does not require a separate permit, but San Francisco’s Department of Building Inspection enforces additional triggers like stormwater flow and front setback compliance on some properties. We check before we dig. If a permit is required, we pull it and make sure inspections are signed off. That’s not optional in this city.
Lineo Dimensional Stone is the best fit for roof decks in fog-heavy San Francisco ZIP codes. It’s a large-format unit with tighter joints, which reduces moisture penetration and efflorescence compared to smaller-format pavers. We also select a polymer sand designed for damp coastal conditions. For an exact recommendation on your deck, call (877) 610-1318.
It almost always comes down to soil and base depth. Backyards on the old sand dune formations in the Mission and Noe Valley settle and shift more than yards on the bedrock-anchored western hills. If the original install used a shallow base or skipped geotextile fabric, fog-season moisture works into the subgrade and heaving follows. We diagnose by looking at the base before we ever pull a paver.
Often yes. We can fix localized settlement by lifting a section, correcting the base, and re-laying the pavers. But if the settlement is widespread or the base has washed out under the fog-belt moisture, a full reset is the cheaper long-term choice. We’ll show you the condition of the base and give you a written recommendation. Call (877) 610-1318 for a free estimate.
Service Areas Near San Francisco
Barrett & Sons Construction serves San Francisco and the surrounding region, including San Francisco service area work in the city proper and nearby communities. We also provide Unilock service in Fresno and Unilock service in Sacramento for clients with properties in those areas. If you’re not sure whether we cover your street, call and ask. A live person answers.
Book Your Unilock Service in San Francisco Today
If your Unilock patio, driveway, or walkway needs attention, call Barrett & Sons Construction at (877) 610-1318. We’ll schedule a free estimate, put everything in writing, and pull permits when the job calls for them. Tom Barrett’s name, address, and license number are published right on our contract. Look us up before you sign anything.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving San Francisco since 1998.