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Tremron Home Additions & ADU: The Santa Clarita Owner’s Guide
If you’re planning a Tremron home addition or ADU in Santa Clarita, you’re looking at a project that typically runs $45,000 to $130,000 for the addition itself, with ADU construction ranging from $90,000 to $220,000 depending on size, site conditions, and finish level. We stock and install the Tremron-compatible materials, substrates, and hardware these projects require, and we can usually have a written price in your hands within a few days of the site visit. Most homeowners discover they need this page when the scope has outgrown a patch job – the paver base is shifting, the retaining wall is leaning, or the city’s ADU setback requirements mean the project needs to be engineered, not eyeballed.
What we see most often in Santa Clarita: homes in neighborhoods like Valencia, Saugus, and Canyon Country where the original Tremron hardscape was installed 15 or 20 years ago, and the base material has finally given way to our expansive clay soils and summer heat cycles. The pavers themselves are usually still good – it’s what’s underneath them that failed.
Key takeaways:
- Tremron home additions in Santa Clarita run $45,000 – $130,000; ADUs run $90,000 – $220,000
- We offer a written price before any work starts, every time
- Elmstead Remodeling Santa Clarita is an independent contractor, not affiliated with Tremron
- The 365-Day Done Right Promise covers every completed project
Which Tremron Models This Applies To

Tremron manufactures concrete pavers, retaining wall blocks, and segmental wall systems rather than a single “model” line, so compatibility comes down to series and dimensions. The most common Tremron products we encounter on Santa Clarita addition and ADU projects are the Mega-Stone series (large-format pavers for patios and walkways), the Holland Stone (a 60mm traditional paver used on driveways and pool decks), and the Keystone wall system Tremron distributes for retaining walls and planter boxes.
Here’s the compatibility gotcha: Tremron’s paver thickness varies by series and intended use. Holland Stone pavers are 60mm thick. Mega-Stone pavers run 80mm. If a section failed and was previously replaced with a thinner paver from a different manufacturer, the new installation won’t sit flush – and that height difference is what causes tripping hazards and edge chipping within the first year. We identify the original product by checking the underside of a lifted paver for the Tremron stamp, then matching the thickness and chamfer profile before we order anything.
For OEM versus aftermarket: Tremron is the OEM for its paving and wall products, and we specify genuine Tremron material whenever the existing hardscape is Tremron and the match needs to be visually seamless. For components Tremron doesn’t manufacture – base rock, geotextile fabric, edge restraints, polymeric sand – we use products from suppliers whose warranties travel with the job: Techniseal and Gator for jointing sand, Core Grass or equivalent for permeable base. We keep Holland Stone and Mega-Stone samples on the truck, plus a color chart, so you’re matching against the actual paver, not a photo on a phone.
Styles & brands we work with







Signs Your Tremron Home Additions & ADU Is Failing
- Settling or sunken paver sections. This is usually a base failure, not a paver failure. In Santa Clarita, our expansive clay soil swells in winter and contracts through our long, dry summers. If the original installation skipped geotextile fabric or the base was under-compacted, the pavers follow the soil and drop. You’ll notice low spots that puddle after rain.
- Widening joints between pavers. When edge restraints fail or were never installed, the entire field of pavers slowly migrates outward. Joints open up, sand washes out, and individual pavers start to rock underfoot. Left alone, this becomes an ankle-sprain hazard on any walkway or patio.
- Cracked pavers near the edges. Unrestrained pavers take vehicle and foot traffic differently than pavers locked into an edge. The crack pattern – usually a diagonal break starting at a corner – tells you the load isn’t being distributed. This is common on driveway additions where the original installer skipped the concrete edge restraint.
- Sinking retaining wall caps or leaning wall blocks. Tremron Keystone walls lean when the drainage behind them clogs or was never installed correctly. Without a proper gravel backfill and drain pipe, water pressure builds behind the wall and pushes it forward. In Santa Clarita’s winter rain bursts, that pressure arrives fast.
- White, chalky discoloration on pavers. Efflorescence. It’s not a structural failure, but it signals water is moving through the paver and evaporating at the surface, carrying minerals with it. Persistent efflorescence on a Tremron patio usually means a drainage pitch problem underneath or around the hardscape.
See the difference
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After
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After
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AfterReplacement Cost & What’s Included

For a Tremron home addition or ADU project in Santa Clarita, the installed price range is $45,000 to $130,000 for an addition and $90,000 to $220,000 for an ADU. Here’s the breakdown for the Tremron-specific hardscape portion, which is often a smaller slice of a larger addition or ADU scope:
- Paver patio or walkway replacement (Tremron Holland Stone or Mega-Stone): $3,500 – $11,000 depending on square footage and base condition
- Paver driveway installation (Tremron Holland Stone, 60mm): $7,000 – $18,000
- Retaining wall rebuild with Tremron Keystone blocks: $4,000 – $12,000 depending on height, length, and engineering requirements
- Full ADU build (including site prep, foundation, framing, utilities, and finishes): $90,000 – $220,000
What drives the range: access to the site, how much of the old base must be removed and hauled away, whether the project needs engineered drawings (many Santa Clarita retaining walls over four feet do), and the finish level of the ADU interior. We give you a written price before any work starts, and that price breaks out materials, labor, and disposal. No allowances that “grow” later. If we discover a problem during excavation – a broken irrigation line, old construction debris buried under the patio – we walk you through the cost before we touch it.
Every Tremron hardscape project carries our 365-Day Done Right Promise: if it’s not done right, we make it right. That’s in writing, on every project, no fine print.
DIY or Call Us?
Honest answer: you can safely do the inspection. Walk your Santa Clarita yard after a rain and flag the low spots, the opened joints, the leaning wall caps. That helps us diagnose faster when we come out. But the repair itself – pulling hundreds of pounds of pavers, excavating the base, re-compacting with the right aggregate, and re-laying against a properly installed edge restraint – is not a weekend project. Get the base wrong and the same failure returns in two years. For retaining walls over four feet in Santa Clarita, you also need engineering and possibly permits, and that’s not something a YouTube tutorial covers.
We handle the whole sequence: remove, base, reinstall, edge restraint, jointing sand, final photo of the clean-up before we leave. Drop cloths down, shoe covers on, quiet tools during family rest hours where possible. Call (661) 542-4056 and we’ll schedule a site visit and a written estimate.
FAQs

A properly installed Tremron paver patio or driveway with a correctly compacted base and edge restraints should last 25 to 30 years in Santa Clarita’s climate before the base needs significant attention. What shortens that lifespan is water getting under the pavers – our winter rainfall followed by summer expansion cycles is the main culprit.
Yes, usually. If the pavers themselves are intact – and Tremron pavers often are, even after base failure – we lift the affected section, re-excavate and re-compact the base, add geotextile fabric if it was missing, and re-lay the same pavers. That typically saves 40% to 50% compared to full replacement. Call (661) 542-4056 for an exact quote.
Most paver patio or walkway replacements in Santa Clarita take three to five working days on site, depending on access and the condition of the existing base. A full ADU with Tremron hardscape runs four to eight months including permits, inspections, and utility connections.
We keep common Tremron Holland Stone and Mega-Stone samples and color charts on hand for matching, and we order the material directly for each project so the dye lot and batch match across the entire installation. Small repair jobs can sometimes pull from leftover stock, but for anything over a few hundred square feet, we order fresh from the Tremron yard to keep the color consistent.
Written by Graham Stein, Owner, Elmstead Remodeling Santa Clarita at Elmstead Remodeling Santa Clarita, serving Santa Clarita and nearby areas.


