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Unilock Construction in Broadmoor, CA | Toolbox Contractors
We install and repair Unilock paver driveways, patios, retaining walls, and related hardscape across Broadmoor as an independent contractor. What makes our work different here is that we plan every paver job around San Mateo County’s permitting path and the fog belt drainage realities of this unincorporated enclave, not a generic installation checklist. If you’re pricing a Unilock driveway, patio, or a hardscape tie-in to a Broadmoor addition, call us at (855) 382-3257 for a free estimate. Norm Castellano runs the crew, and he’ll give you a straight answer on what your lot actually needs.

Why Broadmoor Residents Choose Us for Unilock Service
We’re a full-scope general contractor, which matters for Unilock work in ways you won’t get from a paver-only installer. A patio doesn’t exist in a vacuum. In Broadmoor, it ties into downspouts, foundation drainage, fence lines, and sometimes a second-story addition or a roof replacement we’re already handling. Norm grew up in the Muscoy area just northwest of San Bernardino, learned construction at San Bernardino Valley College, and spent two decades untangling jobs across the Inland Empire before running Toolbox Contractors out of San Bernardino. That background means when a Broadmoor paver job runs into a grading issue, a foundation moisture problem, or a county setback question, we fix the root cause instead of papering over it with new pavers.
We also speak the material language. Our team works with Unilock sales & service product lines including Brussels Block, Beacon Hill, Umbriano, and the Ledgestone retaining wall system, and we build to the manufacturer’s published specs. Not as a dealer. As a contractor who reads the spec book and follows it because that’s the only way the warranty means anything in Broadmoor’s marine fog.
Styles & brands we work with







Common Unilock Construction Problems We Solve in Broadmoor
If you live in the 94015 ZIP, you’ve likely seen one of these on your block. Broadmoor’s combination of sandy soil, steady onshore wind, persistent fog, and winter rain creates a specific set of failure modes. Here’s what we consistently fix:
- Shifting and heaving on Brussels Block driveways. Broadmoor lots sit on sandy, wind-exposed soil. When a base gets dug only four or five inches deep and topped with an inch of sand, the pavers rock after the first wet season. We re-excavate to the county-spec depth, add Class II base and drainage aggregate, and re-compact in lifts. Then we re-set the pavers with Unilock edge restraints. The problem doesn’t come back.
- Efflorescence and dark algae streaking on Umbriano and Beacon Hill patios. Broadmoor’s fog belt means surface moisture doesn’t dry the way it does inland. Patios with poor slope-away drainage hold that moisture, and the minerals in the concrete bleed through as white efflorescence. Algae follows. We correct the pitch, re-work the slope, and use the right joint sand so water moves off the surface instead of pooling on it.
- Polymeric joint sand washing out on windward edges and downspout discharge points. The wind off the Pacific hits patios and driveways on exposed Broadmoor lots and gradually erodes joint sand that wasn’t installed to spec. Downspouts that dump directly onto a paver edge accelerate this. We re-route downspouts and re-set joints with Unilock’s own polymeric sand, because aftermarket sand is where most of these failures begin.
- Retaining wall settlement or bulging on Ledgestone systems. Broadmoor has real topography, especially on lots backing the golf course. A Ledgestone wall built without proper geogrid behind it and without drainage aggregate will lean or bulge within a few wet seasons. We rebuild with the right reinforcement and a clear drainage path behind the wall.
- Paver failure tied to addition work. This is the one most contractors miss. If you’re adding a room or a second story and the paver patio sits beside the new foundation line, the excavation, drainage, and grade changes from the addition can undermine the patio. Since we handle home additions as a general contractor, we sequence the hardscape and the structure together so you’re not paying twice.
Unilock Service in Broadmoor: What Local Conditions Mean for Your Equipment
Here’s the thing about Broadmoor that doesn’t apply to Daly City, South San Francisco, or anywhere else on the peninsula: every hardscape decision here runs through San Mateo County, not a city planning desk. Broadmoor is unincorporated county land fully surrounded by Daly City. That means our paver driveways, patios, retaining walls, and any hardscape tied to an addition go through county building review. Homes backing the Broadmoor Golf Course fairways carry an extra layer: county setback and view-corridor scrutiny before a patio or wall can go in. On one fairway-backing lot off the course perimeter, our crew tore out a heaved Brussels Block driveway whose base was laid too shallow over sandy soil, re-excavated to county-spec depth with fresh Class II base and drainage aggregate, re-set the pavers with Unilock edge restraints and fresh polymeric sand, then documented the setback line through San Mateo County review before adding a matching Beacon Hill patio along the view corridor. That’s the difference between a contractor who knows Broadmoor and one who calls it Daly City and gets surprised by the county’s review letter.
Unilock Models & Products We Service in Broadmoor
We work with the Unilock lines most common on Broadmoor properties: Brussels Block for driveways and walkways, Beacon Hill and Umbriano for patios and pool decks, and Ledgestone for retaining walls and planter edges. When it comes to parts, we use Unilock’s matching components. That means system-specific polymeric sand, the correct edge restraints, and factory wall caps. Aftermarket sand and generic restraints are cheap, but they’re where most paver failures start. We stock the common Unilock components locally so Broadmoor turnaround stays quick, and if a specific color blend or wall cap needs to be ordered, we’ll tell you the lead time up front.
See the difference
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AfterUnilock Service Pricing in Broadmoor
What you’ll pay depends on three things: the square footage, the existing base condition, and whether we’re working alongside a county-permitted addition. If the base is sand-over-dirt from an old install, you pay for excavation and rebuild. If it’s just joint sand and re-leveling, the job is far less. Here are the ranges we work within across Broadmoor:
| Service | Typical Broadmoor Range |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Driveway Replacement | $5,000 – $14,000 |
| Driveway Sealing | $250 – $700 |
| Home Addition (tie-in hardscape scope) | $45,000 – $130,000 |
Every estimate is free and written as a line-item quote. No change orders once the scope is agreed. Call (855) 382-3257 and Norm or a lead on our team will walk the site with you, check the grade and drainage, and tell you what the job actually needs.
Serving Broadmoor, CA — Our Local Coverage Area
We’re based in the Broadmoor 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 Broadmoor
Do I need San Mateo County permits for a Unilock paver driveway or patio in Broadmoor?
Yes, in most cases you do. Because Broadmoor is unincorporated San Mateo County land, hardscape tied to a driveway expansion, a new patio in a setback area, or any project connected to an addition goes through county planning and building review. Fairway-backing lots face additional view-corridor and setback scrutiny. A permeable paver patio with no structural tie-in may sometimes qualify for a lighter review, but we’ll confirm with the county before we bid. Call (855) 382-3257 and we’ll tell you exactly what applies to your lot.
Why do my Unilock pavers look stained and green after the foggy season?
That’s efflorescence and algae, and it’s common in Broadmoor because the marine fog keeps surfaces damp for weeks at a time. The white staining is mineral salts wicking through the concrete paver. The green is algae growing in that persistent moisture. The fix is usually a correction to the patio’s slope and surface drainage, then a proper cleaning and re-sanding of the joints. Sealing can help, but only after the drainage is right. Otherwise you’re sealing the problem in.
How deep should the base be under a Unilock driveway on Broadmoor’s sandy soil?
A Unilock driveway in Broadmoor needs a deeper base than what you’d get away with on clay soil. We excavate to the manufacturer’s published depth, typically 8 – 12 inches depending on the slope and the sand condition, with a Class II road base compacted in lifts and a drainage aggregate layer. The old shortcuts fail here because the sand shifts under load. We don’t do shortcuts.
Can a Unilock retaining wall handle the slope on a fairway-backing lot?
Yes, but only if it’s built with geogrid reinforcement and a drainage aggregate column behind the wall. A Ledgestone wall without geogrid on a Broadmoor slope will bulge or settle within a few wet seasons. We build to the manufacturer’s engineered spec and document the county setback line before we start. That’s standard on our fairway-backing jobs.
Will a new Unilock patio require drainage work given Broadmoor’s winter rains?
Almost always. Broadmoor’s winter rains arrive on top of sandy soil and a lot of the existing drainage runs straight off downspouts onto paver edges. We design the patio with a positive slope away from the house, re-route downspouts to discharge clear of the paver system, and install the right joint sand to keep water from saturating the base. If the grade doesn’t cooperate, we’ll add a French drain or channel drain. The estimate covers it. Call (855) 382-3257 for an exact quote.
Service Areas Near Broadmoor
We serve Broadmoor service area plus the surrounding Daly City peninsula. Our crews also cover Unilock service in Mission District and Unilock service in Noe Valley for clients whose projects span both sides of the hill. If you’re in Broadmoor and the job crosses into adjacent Daly City neighborhoods, we handle both jurisdictions under one contract.
Book Your Unilock Service in Broadmoor Today
If your Unilock driveway is rocking, your patio looks like it survived a moss bloom, or you’re planning a hardscape tie-in to a Broadmoor addition, call (855) 382-3257. Norm will tell you what you’ve got and what it actually needs. Free estimates, line-item quotes, one contractor for the whole job.
Written by Norm Castellano, Owner at Toolbox Contractors, serving Broadmoor, South San Francisco Unilock service, and the Daly City peninsula.