Cambridge Pavers Home Additions & ADU Nationwide

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

We stock and install Cambridge Pavers-compatible materials for home additions and ADU projects in Rancho Cucamonga, with typical installed pricing from $45,000 to $130,000 for additions and $90,000 to $220,000 for standalone ADUs. Most Cambridge Pavers hardscape integration work is scheduled within two weeks of written quote acceptance. Homeowners usually discover an issue when settling pavers shift near the addition foundation, drainage pooling appears where the new slab meets existing grade, or the outdoor living space they planned around their Cambridge Pavers patio no longer drains correctly after the addition changes the yard’s slope.

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Which Cambridge Pavers Models This Applies To

Cambridge Pavers produces several lines that integrate with home additions and ADUs in Rancho Cucamonga’s Inland Empire climate, and matching the correct series to your existing installation determines whether the new work blends or stands apart. The ArmorTec and Pavingstones series are most common in local builds from 2015 forward, identifiable by the stamped model code on the paver edge and the 2 3/8-inch or 3 1/8-inch thickness. Older Cambridge installations may use the Renaissance or Olde English lines, which carry different edge profiles and require custom cutting where they meet new foundation footings.

We source OEM Cambridge Pavers through authorized distributors in Ontario and Riverside, though for certain foundation-adjacent applications we specify Belgard or Techo-Bloc equivalents when the thermal expansion coefficient better matches the new concrete pour. The compatibility gotcha in Rancho Cucamonga specifically: Cambridge’s ArmorTec color batches shift between production runs, so a 2025 order of “Onyx Black” will not match a 2019 installation even with the same SKU. We always pull a physical sample and verify against the existing patio before ordering the full quantity. If your addition requires cutting into an existing Cambridge Pavers walkway, we photograph the edge pattern and measure the joint spacing, typically 1/16 to 1/8 inch, to replicate the original installer’s technique.

Signs Your Cambridge Pavers Home Additions & ADU Is Failing

• Pavers settling or tilting near the new foundation wall. This indicates the compacted base was disturbed during addition excavation and not restored to 95% standard Proctor density before repaving. In Rancho Cucamonga’s sandy-loam soils, we see this most often where the original installer used recycled concrete base instead of Class II aggregate base rock.
• Water pooling against the addition slab where it previously drained away. The new structure changes grade geometry, and without a regraded swale or channel drain, Cambridge Pavers laid to the old contour now hold water. This accelerates efflorescence on the paver surface and can wick moisture through weep screed into framed walls.
• Expansion joints cracking or separating between old and new paver runs. Cambridge Pavers expand roughly 0.0004 inches per inch per degree Fahrenheit; a 40-foot run in Rancho Cucamonga’s 110-degree summer sun moves nearly a quarter inch. Without a properly placed isolation joint at the addition footprint, that stress fractures the bedding sand and shifts pavers out of plane.
• Chipping or spalling on pavers adjacent to the new construction traffic path. Heavy equipment during framing and roofing compacts the base unevenly, and Cambridge’s ArmorTec surface layer, while durable, cannot compensate for a flexing substrate. We inspect for this specifically during our post-addition hardscape assessment.
• Weeds or vegetation emerging through joints that were previously stable. Disturbed base material allows organic matter to infiltrate the bedding layer, and the polymeric sand installed with the original Cambridge Pavers has washed out where grade was altered. This is both a symptom and a precursor to further settling.

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Replacement Cost & What’s Included

Cambridge Pavers integration with a home addition in Rancho Cucamonga runs $45,000 to $130,000 for the full addition structure with hardscape tie-in; standalone ADU construction with connected paver walkways and patios ranges from $90,000 to $220,000. Within that, the hardscape-specific portion, including base repair, paver removal and replacement, and drainage correction, typically represents 8% to 15% of the total project cost.

What drives the range: accessibility for excavation equipment, whether we can salvage existing pavers or must source new, and the drainage complexity created by the addition’s footprint. Under Clause 1 of The Haven Standard, every project receives a written flat price before work starts, itemized by phase, with no change order processed until signed. Our 365-Day Done Right Promise covers the hardscape integration against settling and drainage failure. Every visit includes a documented photo record, standard, not optional.

DIY or Call Us?

An owner can safely inspect for the symptoms above: photograph the settled area, measure the water pool depth after a heavy rain, and check the paver edge for the Cambridge model stamp. What goes wrong with DIY is almost always the base. Removing pavers, adding a bag of sand, and relaying them addresses the symptom for one season until the uncompacted base settles again. The compaction equipment required, a plate compactor delivering 3,000 to 5,000 pounds of centrifugal force, is not a rental most homeowners operate correctly, and without it the repair fails.

More critically, any excavation within 18 inches of a new addition foundation in Rancho Cucamonga requires attention to the weep screed and drainage plane; damage here traps moisture in the wall assembly. We recommend a professional assessment for any integration work within the foundation perimeter. Call (909) 373-9612 to schedule a free estimate with written pricing.

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