Tremron Home Additions & ADU Nationwide

Tremron Home Additions & ADU: The Palo Alto Owner’s Guide

We stock and install Tremron-compatible hardscape systems for home additions and ADU projects in Palo Alto, with typical installed pricing for Tremron paver patios, walkways, and retaining walls running $7,000-$18,000 depending on square footage and base preparation needs. Most Tremron paver replacement and extension jobs can be scoped and started within one to two weeks once we complete the site visit and written quote. Homeowners usually discover their Tremron installation is failing when settling creates visible dips after winter rains, polymeric sand washes out from between pavers near downspouts, or the original contractor skimped on the aggregate base and the surface has shifted enough to trip on.

Call (650) 446-9092

Which Tremron Models This Applies To

Tremron manufactures several paver lines common to Peninsula home additions and ADU hardscaping: the Olde Towne series (tumbled concrete pavers in 4×8 and 6×6 configurations), the Mega Olde Towne (thicker, 80mm profile for vehicular loads), the Stonehurst (slate-textured, 60mm), and the permeable Aqua-Bric line increasingly specified for Palo Alto’s stormwater management requirements. The model stamp appears on the paver edge or underside on newer production runs; on older installations, we measure thickness, note the edge profile (tumbled vs. chamfered), and match the color batch from Tremron’s current archive.

OEM Tremron pavers maintain color consistency and structural warranty coverage, but for discontinued colors we source from Tremron’s remaining stock or match to Belgard and Techo-Bloc equivalents from our vetted inventory. The compatibility gotcha in Palo Alto: ADU setback requirements often mean working in narrow side yards where the original Tremron Mega Olde Towne (80mm) was over-specified for foot traffic only, and switching to standard 60mm Olde Towne saves material cost without sacrificing performance. We document the spec change in writing before ordering.

Signs Your Tremron Home Additions & ADU Is Failing

• Pavers rock or wobble underfoot. The bedding sand layer has eroded or the aggregate base was insufficiently compacted, often because the original crew skipped the plate compactor pass on the 3/4-inch minus sub-base. In Palo Alto’s clay-heavy soils, especially near the Adobe Creek drainage, seasonal expansion accelerates this failure.
• Polymeric sand joints wash out after light rain. The sand was either under-watered during activation or the paver pitch directs roof runoff directly across the joint surface. We see this repeatedly on ADU walkways in Old Palo Alto where downspouts terminate too close to the hardscape edge.
• Visible cracking or spalling on paver faces. Tremron concrete pavers are rated for freeze-thaw cycles, but de-icing salt exposure or repeated pressure washing above 2,500 PSI degrades the surface paste. Coastal fog zones in Palo Alto don’t freeze hard, but salt air near the Bay can contribute to surface deterioration over a decade.
• Retaining wall tilts or bulges outward. The Tremron retaining wall block was likely stacked without geogrid reinforcement behind it, or the drainage aggregate behind the wall is clogged with native soil. Wall failures in hilly Palo Alto lots, particularly in the foothills near Foothill Expressway, often trace to inadequate drainage during the original install.
• Efflorescence blooms as white powder across the surface. Calcium hydroxide migration is common in new Tremron installations and usually cosmetic, but persistent efflorescence after two years signals water intrusion through the base layer that will eventually undermine structural integrity.

Before

After

Replacement Cost & What’s Included

The range reflects three variables: base condition (whether we can salvage the existing aggregate or excavate to virgin soil), access constraints (narrow side yards require mini-excavator rental in Palo Alto, typically $400-$600/day), and paver selection (standard Olde Towne vs. premium Stonehurst or discontinued color matching). Under Clause 1 of the Haven Standard, your written quote itemizes each line before any work starts. Our 365-Day Done Right Promise covers settling, joint failure, or drainage issues that trace to our installation. We pull permits when the project footprint changes; most Tremron repair work within existing hardscape boundaries does not require permitting in Palo Alto, and we document that determination in your file.

DIY or Call Us?

A homeowner can safely assess Tremron paver condition with a straightedge and level: lay a 4-foot level across suspect areas and measure gaps exceeding 1/4 inch. Check downspout termination points and note where water sheets across rather than drains through the surface. Document with photos, which is more than most contractors expect from a caller.

Where DIY goes wrong: resetting pavers without re-compacting the base guarantees recurrence within two seasons. Retaining wall rebuilds involving geogrid, drainage pipe, and engineered backfill require equipment and structural knowledge; a failed wall can undermine an ADU setback or damage an adjacent foundation. We bring plate compactors, laser levels, and the correct Tremron color batch on the first trip. Call (650) 446-9092 to schedule your free estimate; we review your photos beforehand and arrive with options priced.

FAQs