Cambridge Pavers Home Additions & ADU Nationwide

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

We stock and install Cambridge Pavers-compatible systems for home additions and ADU projects in Pomona, with typical installed pricing from $45,000 to $130,000 for additions and $90,000 to $220,000 for detached ADUs. Most Cambridge Pavers patio, walkway, and hardscape integrations for these projects are spec’d and started within two weeks of written approval. The failure pattern we see most often isn’t the pavers themselves - it’s the bedding layer, edge restraint, or drainage plane beneath them, discovered when settlement cracks appear or water starts pooling against the new foundation.

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Which Cambridge Pavers Models This Applies To

Cambridge Pavers produces several lines relevant to Pomona home additions and ADU hardscaping: the ArmorTec paving stones (standard for patios and walkways), the Kingscourt cobble series (often used for ADU courtyards), and the Olde English Wall system (retaining and planter walls tied to addition footprints). The critical identifier is the lot number stamped on the paver edge, which tells us the production run and whether your existing hardscape uses the 60mm or 80mm thickness. Most ArmorTec residential installs in Pomona from 2015 onward are 60mm; pre-2015 or commercial-grade specs sometimes run 80mm, and matching that dimension matters for any repair or extension.

We source Cambridge Pavers through authorized regional distributors, not direct from the manufacturer. For repairs and additions, we match the original lot color where possible; when the lot is discontinued, we spec the closest current production run and document the variance in writing before ordering. Aftermarket equivalents exist from Belgard and Techo-Bloc, but we default to Cambridge Pavers for extensions to existing Cambridge installations - the dimensional tolerance and color stability hold better across mixed-age sections, especially under Pomona’s UV exposure and occasional freeze-thaw cycles.

Signs Your Cambridge Pavers Home Additions & ADU Is Failing

• Settlement or sinking near the addition foundation. The bedding sand or aggregate base has compacted unevenly, often from inadequate initial compaction or water intrusion through a failed edge restraint. This transfers load stress to the addition’s stem wall or ADU slab, which it wasn’t designed to carry.
• Water pooling on the paver surface after rain. The drainage plane (typically a 4-inch perforated pipe bedded in clean gravel) has clogged with sediment, or the original slope was lost to substrate movement. Standing water against wood-framed additions risks termite exposure and dry rot; against ADU stucco, it accelerates weep screed failure.
• Edge restraints pulling away or cracking. Plastic or aluminum edging spikes have corroded or worked loose in Pomona’s expansive clay soils. Once the edge goes, the interlock pattern loosens, and pavers start migrating outward under foot traffic or furniture load.
• Efflorescence whitening that doesn’t clean off. Calcium hydroxide migration from the concrete base indicates moisture is moving through the system continuously, usually from a broken irrigation line or poor subgrade drainage. Persistent efflorescence signals the bedding layer is saturated and losing structural integrity.
• Popping or rocking pavers underfoot. The bedding sand layer has washed out or the pavers have lost their 1/16-inch joint sand. In Pomona’s Santa Ana wind conditions, joint sand loss accelerates; without it, the interlock fails and individual pavers shift independently.

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Replacement Cost & What’s Included

Home addition hardscape integration in Pomona runs $45,000-$130,000; detached ADU construction with full hardscape package runs $90,000-$220,000. Within those totals, the Cambridge Pavers-specific components - patio, walkway, or courtyard surfaces - typically represent 8% to 15% of the overall project cost, depending on square footage and whether we’re tying into existing grade or building retaining elements.

What drives the range: site access (steep Pomona hillsides require machine work that flat lots don’t), existing condition of the substrate (remediation of failed drainage adds labor), and whether we’re matching discontinued color lots (special orders extend lead time). Every quote from Rowan Construction Group is a flat written price with line-item scope - under Clause 1 of The Haven Standard, the number is fixed before any work starts, and no change proceeds without a signed change order. Our 365-Day Done Right Promise covers the installation; Cambridge Pavers’ own limited warranty covers material defects, which we handle as a single point of contact.

DIY or Call Us?

An owner can safely check: whether the edge restraint is visibly loose, whether downspouts discharge directly onto the paver bed (they shouldn’t), and whether irrigation heads are spraying the hardscape surface (they are, and that’s a problem). These are observations, not repairs.

Where DIY goes wrong: re-leveling pavers without addressing the base failure guarantees recurrence within a season. Removing and replacing bedding sand requires plate compaction in 6-inch lifts - rental compactors in untrained hands damage pavers and adjacent structures. Any work within 18 inches of a foundation or ADU slab triggers California’s Title 24 energy code and local setback verification; we’ve seen owner-installed patios trigger stop-work orders in Pomona because the permit scope wasn’t understood. The excavation also exposes buried utilities, including gas and electrical that may serve the addition or ADU itself. Measure twice, then we can talk.

We’re not affiliated with Cambridge Pavers; we’re an independent contractor that sources and installs their products to spec. Call (626) 606-1081 to schedule your free estimate - we’ll photograph the existing condition, confirm the lot number, and deliver a written price before any work starts.

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