Cambridge Pavers Home Additions & ADU Nationwide

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

When a Cambridge Pavers product is part of a home addition or ADU project, the most common question we hear is whether the paving material can be matched, extended, or repaired without tearing out the surrounding work. The short answer: yes, in most San Francisco installations, Cambridge Pavers products can be sourced, matched by series, color, and size, and installed as part of a larger addition or ADU build, with typical project costs running $53,100 to $153,400 depending on square footage, site access, and foundation work. The failure point is rarely the paver itself; it’s usually the base preparation, drainage, or an existing patio or walkway that was never designed to carry the added load of a new structure. If you’re standing in your yard looking at cracked pavers, shifting edges, or a low spot that holds water after a San Francisco rain, that’s the warning sign to address before framing begins.

Call (831) 480-4497

Which Cambridge Pavers Models This Applies To

Cambridge Pavers manufactures its product lines in specific dimensional profiles, and matching matters. The three series we work with most often in San Francisco home additions and ADU projects are the Ledgestone, Roundtable, and ArmorTec lines, each with different thicknesses and edge profiles. Ledgestone runs 60mm thick and is the most common choice for driveways and load-bearing transitions. Roundtable is a lighter paver used for walkways and patio surfaces. ArmorTec is Cambridge’s high-compression paver, rated for heavier vehicle traffic. Here’s the compatibility gotcha most homeowners miss: Cambridge changes color names and lot numbers seasonally, and a paver poured in 2019 will not match a paver poured in 2024, even if both are labeled “Onyx Black” or “Sierra Blend.” When we extend a patio or add an ADU walkway, we pull a physical sample from the existing surface and order against that lot code, not the catalog name. On the OEM versus aftermarket question: Cambridge produces its own pavers, so there is no true generic equivalent. We spec OEM Cambridge product for structural work. For small repairs where an exact color match is less critical, we will discuss blended alternatives, but we never install a substitute without telling you first.

Signs Your Cambridge Pavers Home Additions & ADU Is Failing

• Low spots that hold water for more than an hour after rain. This means the base layer under the pavers is settling or eroding. Left alone, the pavers above will crack or shift, especially in San Francisco’s clay-heavy soil neighborhoods like the Outer Sunset where drainage is already a fight.
• Pavers rocking underfoot. A paver that moves when you step on it has lost bed support. The cause is almost always a sand base that has washed out through an edge or a crack. This will only spread.
• Edge rows pulling away from the border. Cambridge paver installations rely on edge restraint to hold the entire field in tension. When the edge row shifts, the whole surface starts moving outward, creating gaps you can see from across the yard.
• Efflorescence or white chalky staining that won’t clean off. On Cambridge pavers, persistent whitening often signals trapped moisture under the surface, which points back to a drainage or base problem rather than a cosmetic one.
• Cracks running in a straight line across multiple pavers. A single cracked paver is usually impact damage. A crack that spans five or six pavers in a line tells you the base beneath has fractured, often from tree roots or a failed sub-base.

Replacement Cost & What’s Included

For San Francisco home additions and ADU projects that involve Cambridge Pavers surfaces, the lead range of $53,100 to $153,400 reflects the entire project, not the paver line item alone. The paver portion of a home addition or ADU project typically runs $4,130 to $12,980 for a patio installation, and $8,260 to $21,240 for a driveway, depending on square footage and access. The larger range accounts for foundation work, framing, utilities, and the paving surface. What drives the paver-specific price: site access (San Francisco properties with narrow side yards or steep grades cost more to excavate and prep), base depth required, drainage improvements, and whether the existing surface needs full removal or can be built over. Our written price includes the pavers, base material, labor, hauling, and a photo of the cleanup before the crew leaves. There are no change orders after the price is written unless you request additional work. Every project carries the 365-Day Done Right Promise: if it’s not done right, we make it right.

DIY or Call Us?

There are checks you can do on your own. Walk the paver surface after a dry spell and mark every spot that rocks or sounds hollow. Note where water pools. Take photos of the color codes stamped on any leftover pavers from the original install. That information helps us quote accurately. What you should not do is pull up pavers and rebuild the base yourself. Paver work under a structure or driving surface involves excavation, compaction, and often drainage corrections that need to be done in sequence. A wrong base depth under an ADU walkway means tearing it out and redoing it within two years. We have seen well-meaning homeowners in San Francisco spend a weekend and a rental plate compactor only to have the surface fail the following winter. If you want to talk through what you’re seeing, call (831) 480-4497 and describe it. We’ll tell you over the phone whether it’s worth a site visit.