Cambridge Pavers Home Additions & ADU Nationwide

Cambridge Pavers Home Additions & ADU: The Santa Clara Owner’s Guide

We stock and install Cambridge Pavers-compatible systems for home additions and ADU projects in Santa Clara, with typical installed pricing from $45,000 to $130,000 for additions and $90,000 to $220,000 for detached ADUs. Most Santa Clara homeowners discover their Cambridge Pavers hardscape needs attention during the addition planning phase, when an existing patio, walkway, or driveway must be cut, removed, or integrated with new foundation work. In the Rivermark and Northside neighborhoods, we regularly see Cambridge Pavers installations from the 2010-2018 building boom that now need structural assessment before vertical construction can begin.

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Which Cambridge Pavers Models This Applies To

Cambridge Pavers produces several product lines that appear beneath Santa Clara home additions and ADUs, and identifying the correct series determines whether integration or full removal is the practical path. The ArmorTec and Renaissance collections are most common in Santa Clara County, with ArmorTec’s through-body color and beveled edge showing up in driveways and Renaissance’s tumbled finish typical of patios and pool decks. To identify your installation, look for the manufacturing stamp on the paver edge, usually a two-letter plant code and date, or measure the paver itself: ArmorTec runs 2⅜ inches thick in the standard modular pattern, while Renaissance varies by specific style. The OEM-versus-aftermarket question here is not about the paver itself but about the bedding layer, edge restraint, and drainage substrate that Cambridge specifies in their technical literature. We source the same graded aggregate base, the same ICPI-recommended edge restraint profiles, and the same joint sand gradation that Cambridge’s installation manual calls for. Using generic road base or the wrong sand specification is where we see integration failures within two Santa Clara rainy seasons.

Signs Your Cambridge Pavers Hardscape Needs Attention Before Your Addition

• Visible settling or dipping near the addition footprint. The compacted aggregate base has degraded or was improperly installed, often from Santa Clara’s clay-heavy soils expanding and contracting through dry summers and wet winters. This base must be excavated and recompacted before any foundation tie-in.
• Efflorescence blooming across paver surfaces. White mineral deposits indicate moisture migration through the bedding layer, which means the drainage plane is compromised. For an addition foundation that will sit adjacent, this moisture path must be interrupted or you will have water against your new stem wall.
• Edge restraints pulling away from the perimeter. Plastic or aluminum edging that has bowed or detached means the lateral load distribution is failing. Where your addition foundation will abut the hardscape, this edge condition determines whether you need a poured concrete collar or can tie directly to the paver field.
• Joint sand completely washed out. Sand loss creates point-loading on individual pavers and allows water to penetrate the bedding layer rather than sheet across the surface. In Santa Clara’s intermittent heavy rains, this accelerates base erosion and creates voids that telegraph through to any slab poured nearby.
• Pavers rocking or sounding hollow when stepped on. This indicates loss of bedding sand support, often from ants burrowing in the base or from organic decomposition if landscape fabric was omitted. Rocking pavers will not provide a stable reference plane for foundation layout.

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Replacement Cost & What’s Included

The range depends on three factors: whether the existing Cambridge Pavers installation can be partially salvaged or must be fully removed; whether Santa Clara’s soil conditions require engineered fill or geogrid reinforcement; and the complexity of tying new foundation drainage into the existing site grade. Under Clause 1 of the Haven Standard, you receive a written flat price before any work begins, with every line item specified: demolition, export, base preparation, compaction testing, paver reinstallation or new installation, and integration detailing against the new foundation. The 365-Day Done Right Promise covers the hardscape work, and the documented photo record shows base conditions before they are buried.

DIY or Call Us?

There is safe reconnaissance and there is work that requires licensed execution. A homeowner can walk the Cambridge Pavers area with a level and a tape, noting which pavers rock, where edges have failed, and whether efflorescence is present. Photographing these conditions and measuring the affected area is genuinely useful preparation.

What goes wrong with DIY: excavating to determine base depth without calling USA North 811 for utility locates, which is legally required and dangerous to skip; compacting base material without a plate compactor rated for the lift thickness, which produces false compaction readings; and attempting to tie new foundation waterproofing into existing drainage without understanding Santa Clara’s surcharge requirements for adjacent structures. We are an independent service provider, not affiliated with Cambridge Pavers. For assessment of your existing hardscape before your addition or ADU, call (669) 259-1843 to schedule a free estimate with written pricing.

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