Cambridge Pavers Home Additions & ADU Nationwide

Cambridge Pavers Home Additions & ADU: The Sherman Oaks Owner’s Guide

Cambridge Pavers-compatible home additions and ADU construction in Sherman Oaks typically runs $45,000-$130,000 for standard additions and $90,000-$220,000 for detached ADUs, with written quotes delivered before any work begins. We stock and install across Cambridge’s full paving line, including their ArmorTec and Renaissance series, and we carry matching materials on every Sherman Oaks job site. Most owners realize something’s wrong when settling pavers create trip hazards near the new foundation, or when drainage from the addition’s footprint starts undermining the hardscape that was supposed to last twenty years.

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Which Cambridge Pavers Models This Applies To

Cambridge Pavers produces several lines that integrate with home additions and ADUs in Sherman Oaks, and matching the right material to your existing hardscape matters more than most contractors admit. The ArmorTec series, their most common residential line, uses a 60mm thickness with a proprietary surface layer; the Renaissance series runs 80mm and carries a different edge profile that affects how it butts against new foundation walls. To identify what you have, flip a loose paver: Cambridge stamps the series name and production date on the underside, and the thickness measurement is molded into the edge. The color code, a four-digit number, tells us which batch to match.

We are an independent contractor, not affiliated with Cambridge Pavers. For OEM replacement, we source directly from Cambridge’s West Coast distribution in Fontana, which typically carries a three-week lead on custom color runs. For faster turnaround, we stock Belgard and Techo-Bloc equivalents that match Cambridge’s dimensional specs within 1/16 inch, close enough that the joint pattern reads as continuous across old and new sections. The aftermarket decision depends on whether your addition ties into existing paving or starts fresh; when we’re butting new work against old, we almost always specify OEM to avoid the slight color shift that shows under Sherman Oaks afternoon light.

Signs Your Cambridge Pavers Home Additions & ADU Is Failing

• Sunken or settled pavers near the addition perimeter. The compacted base beneath Cambridge pavers relies on a 6-inch minimum of Class II road base; when an addition’s excavation disturbs this substrate or when roof runoff concentrates against the new wall, the bedding course washes out and the paver drops. We see this most often on Sherman Oaks lots with the clay-heavy soil common south of Ventura Boulevard.
• Efflorescence blooming across the surface. White mineral deposits mean moisture is migrating through the paver body, usually because the addition’s foundation changed the grade and water now pools beneath the hardscape instead of draining through. Cambridge’s ArmorTec surface resists this, but prolonged saturation overwhelms it.
• Joint sand washing out between pavers. Polymeric sand should lock the joints; when it fails, either the sand was improperly activated during installation or water velocity across the surface has increased due to the addition’s new roof line. The gap then allows edge-to-edge movement that chips the paver corners.
• Chipping or spalling on the wearing surface. Cambridge’s ArmorTec layer is roughly 3/16 inch thick; once it’s compromised, the softer concrete body beneath deteriorates quickly. Heavy furniture dragging during move-in, or the sharp edges of ADU appliance dollies, often cause this damage in the first six months after construction.
• Standing water that wasn’t there before the addition. Cambridge pavers are permeable at the joints, not the surface; when the addition’s footprint interrupts the original drainage pattern, water has nowhere to go. In Sherman Oaks, where we get most of our annual rainfall in concentrated winter storms, this shows up fast and freezes the substrate in January.

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After

Replacement Cost & What’s Included

What drives the range: foundation depth on sloped Sherman Oaks lots, whether we’re tying into existing Cambridge pavers or starting new, and the structural requirements for ADU kitchen and bath wet walls. Every quote we write breaks out pavers, base materials, labor, and permits as separate line items. Under Clause 1 of the Haven Standard, that written price is fixed; no change proceeds without a signed change order, which is how we’ve kept projects within a few percent of the agreed number across 4,000-plus jobs since 2007. The 365-Day Done Right Promise covers the installation, and Cambridge’s own limited warranty covers material defects.

DIY or Call Us?

There’s a short list of checks any homeowner can make safely. Walk the perimeter of your addition with a 4-foot level; any paver that rocks or sits more than 1/4 inch below its neighbor has lost base support. Look for the Cambridge stamp on a loose paver to confirm your series. Check downspout termination points, since concentrated discharge is the single most common cause of base erosion we find in Sherman Oaks.

Where DIY goes wrong: re-leveling pavers without addressing the base failure underneath guarantees the same settlement in six months. Compacting a new base properly requires a plate compactor rated for the 6-inch lift depth, plus controlled moisture content, plus a geotextile separation layer on our native clay soils. Get any of that wrong and the city inspector flags it during the addition’s final walkthrough. We’ve also seen homeowners damage the waterproofing membrane on the addition’s foundation wall while excavating for paver repair, which voids the membrane warranty and invites termites.

Measure twice, write it down, then build it. Call (213) 221-0788 to schedule your free estimate, and we’ll bring the written quote.

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