Cambridge Pavers Home Additions & ADU Nationwide

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

If you’re planning a home addition or ADU in Orange County with Cambridge Pavers, you’re likely looking at a project that runs $45,000 to $130,000 depending on square footage, site prep, and paver scope. We supply and install Cambridge Pavers-compatible materials for additions, attached suites, and detached ADUs across Orange County, and we write the full price down before any work begins. Most owners reach out after discovering their existing patio or driveway pavers can’t simply be extended into the new footprint because the original color lot or series line was discontinued, or because the base beneath the old pavers wasn’t built to handle the new load.

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Which Cambridge Pavers Models This Applies To

Cambridge Pavers runs several product lines that show up constantly on Orange County additions and ADU projects. The most common we work with are the Ledgestone, RoundTable, and Sherwood lines, along with the Maytrx and Pyzique collections for larger format work. Here’s what matters when matching: Cambridge stamps a lot number and production date on the underside of most pavers, and that stamp is the single most reliable way to match color. Colors shift between production runs. A “Sierra Blend” paver poured in 2019 will not match a “Sierra Blend” poured in 2024, even though the name is identical. If you’re extending an existing Cambridge patio or walkway into a new addition footprint, we pull samples from both the old lot and the new lot and compare them side by side in daylight before we order. For OEM versus aftermarket: Cambridge doesn’t sell through big-box stores, so if someone offers you a “Cambridge equivalent” at a discount, treat it as a different product. Third-party pavers in the same shape family can work for standalone ADU patios where the new paver doesn’t touch the old one, but for any seamless extension, stay OEM or accept a deliberate transition line.

Signs Your Cambridge Pavers Home Additions & ADU Is Failing

• Pavers sinking or lipping at the transition where new meets old. This almost always traces back to base prep. The original patio or driveway may have been set on 2 to 3 inches of compacted base, while anything carrying foot traffic from a new bedroom or kitchen addition needs 4 to 6 inches minimum in Orange County’s clay-heavy soils.
• Color mismatch that’s visible from the kitchen window. The paver size and shape are right, but the tone is off by a shade or two. This happens when the installer ordered by product name instead of lot number. Cambridge color lots drift, and the fix is usually pulling a few strategically placed pavers from the old field and blending them into the new section so the transition reads as intentional.
• Water pooling against the new foundation or ADU slab. If pavers near the addition pitch toward the structure instead of away from it, the subgrade was likely not re-graded before the paver base went in. In Orange County, a 1% to 2% slope away from the building is the minimum you want.
• Efflorescence or white hazing on newly installed pavers. Cambridge pavers are dense, but Orange County’s hard irrigation water plus morning marine layer can push mineral salts to the surface in the first few months. It’s cosmetic, not structural, but it signals the installer didn’t explain the curing timeline.
• Edge restraints popping up along the new paver border. If the plastic or aluminum edge restraint wasn’t spiked deep enough into the subgrade, the outside course of pavers starts to drift within a season. You’ll see a soft, wavy border line instead of a crisp edge.

Replacement Cost & What’s Included

For Orange County projects we quote three things separately so there’s no mystery: paver material, base prep, and labor. Cambridge pavers themselves typically run $4 to $9 per square foot for the common lines like Ledgestone and RoundTable, with larger-format or specialty finishes pushing higher. Base prep on a proper addition or ADU site, including excavation, compacted gravel, and sand setting bed, generally lands in the $2 to $5 per square foot range depending on access and how much of the old base has to come out. Labor for paver installation in Orange County runs $8 to $15 per square foot. A typical 400-square-foot patio off a new ADU is the sweet spot: roughly $5,600 to $11,600 all-in. The reason some bids come in dramatically lower is base prep. If a crew skips the deeper excavation or compacts in one lift instead of three, the price looks great for about 14 months. We put the full written number in front of you before we order a single paver, and our 365-Day Done Right Promise covers the work in writing.

DIY or Call Us?

Pavers don’t carry the same danger as a garage door spring or a live electrical panel, so there’s room for a smart homeowner to handle minor things. You can absolutely check your existing Cambridge pavers for lot stamps, measure the current field, and pull a couple of pieces from an inconspicuous corner to compare against a new sample. What you shouldn’t do is excavate and compact a base by hand for anything larger than a mailbox pad. Orange County clay expands and contracts with the seasons, and a pavers job laid on an under-compacted base is a redo within two years. If the job touches a foundation, involves drainage, or needs to match an existing Cambridge field, call us at (424) 541-1701. Give you the number first, then pick up the tool.