Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Unilock Construction in Hillsborough, CA | Brookside Contractors
We provide independent Unilock installation and repair across Hillsborough, and the one thing that makes our work here different is that we plan every paver project around the town’s real constraints: heritage tree root zones, hillside grading rules, and wet-winter runoff on steep lots. Most Unilock failures we fix in Hillsborough trace back to someone ignoring one of those three things. Call (833) 725-3508 for an estimate built to your lot’s actual conditions, not a generic paver bid.

As a Hillsborough General Contractor, Brookside Contractors handles Unilock hardscape the way this town demands it: as part of a larger property plan, not a standalone patch job. We install and repair Unilock structural walls, terraced patios, and paver driveways as an independent contractor, reading each manufacturer spec sheet and installation guide directly rather than working through any dealer program. Our crews handle Unilock’s structural wall and permeable paver systems often enough to know where the details fail on steep, wooded lots. We’re not affiliated with Unilock. We answer to you, not a manufacturer’s quota.
Why Hillsborough Residents Choose Us for Unilock Service
The houses in Hillsborough aren’t tract homes, and the hardscape shouldn’t be treated like one. Nearly every property sits on an acre or more of wooded hillside, with the original mid-century estates either being rebuilt or extensively remodeled. That means the paver work has to hold up to wet winters, dry summers, and a lot whose slope was never kind to shallow subgrades.
Nate Burrell, our owner and general contractor, grew up watching cheap work fail. He trained in construction technology at Gavilan College, spent two decades on job sites throughout South Santa Clara County, and built Brookside around a single rule: do it once, do it right. When we handle Unilock service in San Mateo County and lay pavers in Hillsborough, we’re thinking about the rainy season before we’re thinking about the finished look. It’s not glamorous, but it’s why our driveways stay flat and our walls stay plumb.
We work with genuine Unilock units and matching coping so color and dimension line up with what’s already on the ground. We stock enough common product to keep most Hillsborough repair jobs moving without waiting on a regional shipment. And we’re local enough that scheduling isn’t a week of phone tag with a far-off dispatch desk.
Styles & brands we work with







Common Unilock Construction Problems We Solve in Hillsborough
We’ve rebuilt enough failed paver work in Hillsborough that the patterns are predictable. The same five issues show up on steep, wooded lots over and over. Here’s what we typically find when we walk a problem site.
- Efflorescence and salt bloom on Brussels Block: Hillsborough’s wet-winter/dry-summer cycling pulls moisture up through the bedding sand, leaving white mineral staining across tumbled pavers. We treat the cause with drainage corrections and clean the surface with methods that won’t etch the concrete.
- Base failure and rutting on sloped driveways: When a paver driveway is laid over uncompacted fill left from the original hillside cut, the field starts shoving downhill within a season or two. We pull the pavers, re-compact the subgrade in lifts, and add a geotextile before anything gets reset.
- Joint sand washout and paver migration on terraced patios: A patio cut into a Hillsborough slope takes runoff from above during heavy rain. If the drainage wasn’t designed for that flow, the polymeric sand washes out and the pavers start migrating. We rebuild the edge restraint and add swale lines before re-sanding.
- Retaining wall settlement or bulge where U-Cara units lack geogrid tie-back: On a slope, a Unilock wall without proper geogrid reinforcement is just a stack of blocks waiting for a wet season. We see bulges and settlement where the grid was skipped or under-specified. Those usually need a rebuild, not a patch.
- Driveway edge spread where edge restraints weren’t pinned: Hillsborough driveways often have a fall line that runs right to the property line. Without proper edge restraint, the field spreads outward under vehicle load and looks wrong with the architecture. We pin restrained edges on every rebuild.
Unilock Service in Hillsborough: What Local Conditions Mean for Your Equipment
Here’s what separates Hillsborough from every other town on the Peninsula: many of the lots sit on steep, wooded hillsides where a protected heritage oak or redwood dictates the building envelope. The town’s design-review process and tree-preservation rules can stop a project cold. When we plan a Unilock patio or paver driveway in Hillsborough, the layout often gets shaped around root-protection zones before we ever talk about paver color. Hillside grading permits routinely trigger geotechnical review before a single foundation gets poured, and that review often defines where hardscape can go and what drainage it must carry.
What this means for a Unilock owner is simple: the paver plan is not yours to draw freely. It gets reviewed alongside the tree and grading approvals. So we submit plans that respect those constraints from the first version, and we build base sections that won’t fail where the tree canopy prevents full sun and the ground stays damp for months at a time.
On a wooded lot off a steep side street we won’t name for the client’s privacy, we rebuilt a rutting Brussels Block driveway that had been laid over uncompacted fill after an earlier hillside cut. We pulled the field, re-compacted the subgrade in lifts, added a geotextile and a proper edge restraint, then reset the pavers with fresh polymeric joint sand and a swale to move winter runoff away from the foundation. The driveway holds its grade through the rainy season now instead of shoving downhill.
Unilock Models & Products We Service in Hillsborough
We install and repair the Unilock product lines most common on Peninsula estates. Brussels Block is the tumbled workhorse for driveways and walkways that need to look like they’ve been there for decades. Beacon Hill gives a flagstone texture that suits the mid-century modern homes scattered through Hillsborough’s hillsides. Brussels Dimensional and Brussels Fullnose coping handle steps, wall caps, and pool surrounds. U-Cara is the multi-face retaining wall system we brace and set with geogrid where slope conditions demand it.
When a repair calls for matching units, we source genuine Unilock products so the color and dimension blend with the existing field. We stock common pavers and edge restraints for faster service in Hillsborough, and we won’t patch a failing base with new pavers over bad subgrade. If the base, edge restraint, and drainage are sound, resetting and re-sanding is honest repair. If the wall or slope is moving, we tell you it’s a rebuild. For more on our full Unilock capability, see our Unilock sales & service page.

See the difference
Before
After
Before
After
Before
AfterUnilock Service Pricing in Hillsborough
What you’ll pay for Unilock work in Hillsborough depends on slope, access, and whether we’re repairing a failed base or building fresh. A paver driveway on a steep lot with poor truck access costs more than the same square footage on flat ground. A retaining wall rebuild with geogrid costs more than a simple paver patio. Here’s where the line items fall.
| Service | Typical Range in Hillsborough |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Driveway Replacement | $5,000 – $14,000 |
| Driveway Sealing | $250 – $700 |
Every estimate we write is free and line-itemed, so you see exactly where the money goes. We don’t bid a range and then hope for change orders. Call (833) 725-3508 and we’ll walk the site, check the base, and give you a number that reflects your actual Hillsborough lot, not someone else’s.
Serving Hillsborough, CA — Our Local Coverage Area
We’re based in the Hillsborough 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 Hillsborough
Yes, in most cases it does. Hillsborough’s steep terrain and the town’s grading and tree-preservation rules routinely require a geotechnical review, and any retaining wall over a few feet typically triggers engineering. A wall that isn’t engineered for the slope will move, and a moved wall is a rebuild. We’ll tell you early if your wall needs stamped plans, and we’ll pull the permit so the inspection process doesn’t stall your project. Call (833) 725-3508 if you’re planning a wall and want a straight answer first.
No, we’re independent. Brookside Contractors installs and repairs Unilock systems as a general contractor using genuine Unilock units and manufacturer spec sheets, but we don’t sell through any dealer program and aren’t authorized by the manufacturer. That independence means we’ll recommend keeping your existing pavers and repairing the base when that’s the honest fix.
We source genuine Unilock units and matching coping for any repair that touches the field. Using aftermarket copies risks a color and dimension mismatch that looks worse than the original damage. Genuine product also carries the same freeze-thaw and compressive specs as your existing installation, which matters during Hillsborough’s wet winters.
Most base repairs and re-sanding jobs finish in one to three working days once we’ve had a look. Larger rebuilds, like a full driveway or a failing retaining wall, run longer because of the excavation, compaction, and drainage work involved. We’ll give you a schedule with the estimate, and on emergency slope failures we move fast to stabilize the site before further material moves downhill. Call (833) 725-3508 for a timeframe on your specific project.
If the base is sound and the field needs resetting with new joint sand, you’re usually looking at a few hundred to a few thousand dollars. If the base failed, the subgrade wasn’t compacted, or a retaining wall has moved, that’s a larger project in the $5,000 to $18,000 range depending on size and slope. The cheapest repair is the one done before the base washes out completely. Call (833) 725-3508 for an exact quote after a site walk.
Service Areas Near Hillsborough
We serve the full Hillsborough service area, including the steep side streets off the main ridges and the lower lots near the 280 corridor. Most of our Unilock work also takes us into Unilock service in Millbrae and Unilock service in El Granada for coastal and flatland projects with their own drainage patterns.
For homeowners south of Hillsborough in Morgan Hill, San Martin, or Gilroy, the same Unilock repair in Highlands-Baywood Park and surrounding areas applies, but the base conditions change: less hill, more clay, and a different freeze-thaw cycle than the Peninsula’s microclimates.
Book Your Unilock Service in Hillsborough Today
If your Unilock driveway is rutting, your patio pavers are migrating, or your retaining wall is showing a bulge, call us before the next rainy season. We’ll walk the site, check the base, and give you a straight answer. (833) 725-3508 for a free estimate. Your project, your brands, one contractor, every phase.
Written by Nate Burrell, Owner at Brookside Contractors, serving Hillsborough and the broader Peninsula.